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Offensive Security Researcher / Security Consultant | Elite Cybersecurity Scale-Up | Fully Remote (Global) Ready to take your offensive security skills to the next level? This is your chance to join a fast-scaling cybersecurity innovator, backed by funding, recognised by Gartner, and trusted by some of the world’s biggest enterprises and critical infrastructure providers. They’re building technology that helps security teams outrun real-world threats — and they’re looking for offensive security experts who thrive on finding vulnerabilities where others can’t. What you’ll be doing: • Spending your days doing what you love: hacking (professionally speaking) — discovering innovative, high-impact vulnerabilities across global enterprises, • Hunting for weaknesses that matter: RCE > weak SSL ciphers, • Collaborating with other seasoned offensive experts to invent new TTPs and attack modern infrastructure, • Researching cutting-edge attack vectors across cloud, SaaS, web stacks, and internet-exposed infrastructure, • Partnering with Red Team Engineers to scale and automate your discoveries so nothing gets wasted, • (Optional but encouraged) Presenting your research at industry conferences — with full company support to make it happenWhat they’re looking for:, • 5+ years of real-world offensive security or red teaming experience, • Deep understanding of how to compromise organisations without relying on public CVEs, • Ability to think like an attacker, working without fixed scopes or playbooks, • Scripting skills (Python, Go, etc.) to automate exploits, discovery, or tooling, • Industry certifications (CCSAS, CCT, CRT, OSCP, etc.) or equivalent battle scars from real-world hacking Direct impact – your discoveries will protect some of the world’s largest enterprises The best tools & tech – you’ll be enabled to do your best work Huge growth – this scale-up is in hypergrowth mode, with internal promotion baked into the culture World-class team – collaborate with some of the sharpest offensive minds in the industry This isn’t just another pentesting job. It’s your chance to push boundaries, break things, and redefine what’s possible in offensive security — while shaping the future of exposure management at global scale. Interested? Let’s have a chat – roles like this don’t come around often.

Offensive Security Researcher / Security Consultant | Elite Cybersecurity Scale-Up | Fully Remote (Global) Ready to take your offensive security skills to the next level? This is your chance to join a fast-scaling cybersecurity innovator, backed by funding, recognised by Gartner, and trusted by some of the world’s biggest enterprises and critical infrastructure providers. They’re building technology that helps security teams outrun real-world threats — and they’re looking for offensive security experts who thrive on finding vulnerabilities where others can’t. What you’ll be doing: • Spending your days doing what you love: hacking (professionally speaking) — discovering innovative, high-impact vulnerabilities across global enterprises, • Hunting for weaknesses that matter: RCE > weak SSL ciphers, • Collaborating with other seasoned offensive experts to invent new TTPs and attack modern infrastructure, • Researching cutting-edge attack vectors across cloud, SaaS, web stacks, and internet-exposed infrastructure, • Partnering with Red Team Engineers to scale and automate your discoveries so nothing gets wasted, • (Optional but encouraged) Presenting your research at industry conferences — with full company support to make it happenWhat they’re looking for:, • 5+ years of real-world offensive security or red teaming experience, • Deep understanding of how to compromise organisations without relying on public CVEs, • Ability to think like an attacker, working without fixed scopes or playbooks, • Scripting skills (Python, Go, etc.) to automate exploits, discovery, or tooling, • Industry certifications (CCSAS, CCT, CRT, OSCP, etc.) or equivalent battle scars from real-world hacking Direct impact – your discoveries will protect some of the world’s largest enterprises The best tools & tech – you’ll be enabled to do your best work Huge growth – this scale-up is in hypergrowth mode, with internal promotion baked into the culture World-class team – collaborate with some of the sharpest offensive minds in the industry This isn’t just another pentesting job. It’s your chance to push boundaries, break things, and redefine what’s possible in offensive security — while shaping the future of exposure management at global scale. Interested? Let’s have a chat – roles like this don’t come around often.

Role: User Researcher Location: London/Remote Contract/Perm: Perm Start Date: ASAP Clearances: Internal Background Check (DBS) / Eligible for Security Clearance About Us: Solirius Reply, part of the Reply Group, delivers technical consultancy and application delivery to our clients in order to solve real world problems and allow our clients to respond to an ever-changing technical landscape. We partner closely with our clients, embedding our consultants into their businesses in order to provide a bespoke service, allowing us to truly understand our clients’ needs. It is this close collaboration with our clients that has enabled us to grow rapidly in recent years and will drive our ambitious future growth plans. We currently have over 300 consultants working with a variety of key clients from both the public and private sectors such as the Ministry of Justice, Department for Education, FCDOS, UEFA, International Olympic Committee and Mercedes Benz; with plans to increase our client base further in the near future. We operate as a flat organisation and believe in trusting and supporting our team to operate independently. We pride ourselves on being specialists at what we do, making the most of our consultants’ expertise in their fields in order to provide a best-in-class service to our clients. All our consultants have the opportunity to work on a range of different projects, providing a broad range of knowledge on which to develop their careers and progress in the direction they choose. About You: You are a motivated and adaptable professional with a strong analytical mindset and a passion for using technology to solve real-world problems. You enjoy working in collaborative, agile teams and take pride in delivering high-quality solutions that make a tangible impact. With strong communication skills and a consultative approach, you’re comfortable engaging with clients, understanding their needs, and translating them into effective outcomes. You understand and align with Solirius The role We’re looking for a User Researcher to join our multidisciplinary team designing and delivering innovative digital products and services for our Government and Private Sector clients. You’ll be a great listener and communicator with a creative, structured and logical approach towards understanding problems and designing inclusive, human-centred experiences. We’re specifically looking for a pragmatic team player with an appreciation of both business and user needs, who’s keen to develop their ‘T-shaped’ skills and is not afraid to take on new challenges. Requirements • You have demonstrable experience of developing and carrying out user research plans that produce relevant insights and evaluation of experiences and outcomes., • You’re experienced in a range of user research methodologies and broader research approaches., • You know how to map and engage with different stakeholder groups., • You understand how to carry out research responsibly and ethically, ensuring protection of participant privacy., • You understand the importance of inclusive research and can demonstrate creative approaches for recruiting a diverse range of research participants., • You’ve worked with other disciplines to define hypotheses and test concepts, helping shape new products, services and experiences., • You’ve managed remote and in-person usability testing throughout the agile development lifecycle., • You’re able to lead and participate in the analysis and synthesis of research data and findings, and communicate insights in an engaging and concise way to engage stakeholders in data-informed decisions., • You can define key metrics and measurements used to evaluate the impact of products and services and inform ongoing enhancements., • You’re able to support and coach teams and stakeholders in the use of a range of user research methods, analysis and synthesis techniques and approaches to presenting and sharing findings.User-centred design and agile working, • You’re able to produce concise artefacts (e.g. personas, journey maps, user stories) to help communicate user and business needs., • You’re experienced at working with agile development teams and stakeholders to co-design and deliver products and services to meet user needs, • You advocate for and ensure high standards of usability, accessibility and inclusivity for products and services., • You’ve a detailed understanding and experience of working to the Government Service Standard. (desirable)Communications and productivity, • You have excellent verbal/written, listening and facilitation skills and are confident in communicating with stakeholders at all levels., • You have the technical literacy to understand (at a high-level) technical processes, concepts and constraints., • You have the ability to recognise and work within project constraints, supporting colleagues to ensure delivery of value to the client and their users., • You’re keen to support the development of Solirius’ internal culture, tools, processes and growth opportunities. Benefits • Competitive Salary, • Bonus Scheme, • Private Healthcare Insurance, • 25 Days Annual Leave + Bank Holidays, • Up to 10 days allocated for development training per year, • Enhanced Parental Leave, • Paid Fertility Leave (5 Days), • Statutory & Contributory Pension, • EAP with Help@Hand, • Gym Membership Benefits, • Flexible Working, • Annual Away Days/Company Socials

A senior leader at one of the firms I work with said something recently that stuck with me: "The median researcher adds zero value." He wasn't being provocative for the sake of it, if you think about it. Most quant researchers at most firms are working on the same low-hanging fruit, on overlapping research, competing internally for the same capacity, hedged into irrelevance by a risk framework designed to protect the platform from them rather than empower them. He went on to describe the kind of person he actually wants to hire, and it was pretty specific: Someone who finds genuine satisfaction in the work itself. Not the comp table (appreciating that no-one works for free, right!), not the brand... Quant researchers who read JVM optimisation papers because they want to understand why their backtest is slow, not just that it's slow. Developers who dig into market microstructure literature because they want to understand what their execution code is actually doing, not just that it works. The kind of person whose curiosity bleeds across disciplines; researchers who think like engineers, engineers who think like traders, because they've figured out that the interesting problems live at the boundaries, not inside the silos. Someone with enough intellectual disagreeableness to challenge assumptions in a room full of people, because they care more about being right than being liked. And critically, someone who has actually delivered something, personally, not just improved or maintained what was already there. If that sounds like something you have thought about, and perhaps at some level agree with, maybe we should chat. The project is this: a proprietary systematic shop with hubs in London and NYC, and satellite locations in Europe and US. What they trade: Futures and Equities. Short-term holding periods, at the higher end of the mid-freq spectrum (or the slower end of the high-frequency spectrum, however you prefer to think of it). Exceptional research and execution infrastructure. Significant investment in GPU infra to enhance ML/AI-driven research. Experience delivering strategies at Sharpe ~2-3+ is the qualifier. If you're currently running strategies at that frequency and wondering why your infrastructure costs eat half your contribution, or why 23 other teams at your firm are crowding the same positions, and think that you'd genuinely be interested in being somewhere that you could add direct value to the top-line within an environment that is demonstrably meritocratic (I have numerous examples of this playing out historically within the firm), it'd be worth getting in touch to find out more. What they don't want: someone optimising for their next move. Someone whose first question is "what's the guarantee?" (we'll chat about it, but if it's the primary motivator, that's probably a self-selector...). Someone who views collaboration as a vulnerability rather than an edge. This firm isn't entirely unique, but it's clear on its strategy. I'm also working with a small number of firms that operate this way. London or NYC as primary hubs, fully remote optionality on the table potentially. If this sounds like the kind of environment where you'd do your best work, we should definitely chat.

Office Administrator / Researcher (German) Please note these opportunities are for an immediate start Please also note this is a 5 day-a-week in office position, there is limited remote working due to sensitivity and confidentiality of the work The Opportunity Working for one of the biggest global companies in the world, this is a brilliant 6-month temporary position for German speaking professionals to work as one of their Machine Learning Assistants in their head offices in central London. Working as part of a wider team, the role itself will be undertaking tasks such as dialogue evaluation on speech, text, audio and video data. The Role • Work with a range of data including text, speech, audio, image, and video, • Deliver high-quality labelled data, using guidelines provided to meet KPIs, • Analyse root causes, identify error patterns, and propose solutions to enhance the quality of labelling tasks and their outputs, • Generate high-quality human insight data across a range of channels, • Make sound judgments and logical decisions with ambiguous or incomplete information, • Identify process and operational issues and suggest changes to unblock operations The Person • Fluency in German language (CEFR C1+), • Written and spoken knowledge of English (CEFR C1+), • Strong business writing skills with ability to create reports and proposals etc., • Advanced reading comprehension with ability to analyse complex business documents, • Developed research, analytical thinking and structured problem-solving capabilities, • A keen eye for detail and ability to pivot from one category of requirement to another The Details • Location: Central London (zone 1), • Working: In offices, 5 days a week (no remote work due to sensitivity/confidentiality), • Contract: Temporary, • Length of project: 6 months with potential to extend, • Daily rate: £140 + holiday allowance (c. £160) – paid via PAYE (i.e. weekly payroll)

Founding Engineer (Platform) Location: Remote first (global, UK timezone) Compensation: Up to £120,000 + significant equity Type: Full-time What is DeepFlow? DeepFlow is the hyperscaling platform. We launch and scale AI-native businesses. An operator with 10 years of domain expertise pairs with DeepFlow’s platform and engineering support to build a business that would previously have needed a team of 50. You’re building that platform. Where we are now • Platform live with paying customers across law, finance, recruitment, and media, • Launching our founding cohort through DeepFlow Foundry: deploying agents into real revenue-generating businesses, • Preparing for a significant raise to scale from 2–3 companies to 10+ by September, with a roadmap to 100 in 2027, • Research team published at AAAI 2026 (invited oral) and DAI 2025, with work adopted by top global universities and companies The Role You own the platform. The orchestration engine, the infrastructure, the client-facing dashboards, the integrations, the APIs - everything that isn’t the AI agents themselves. Your architecture decisions directly determine whether the businesses on our platform succeed at scale. This is a full-stack, high-ownership founding role. You work directly with the CTO/CPO and CSO to shape product direction. Significant equity reflects the scope and impact of the position. What You’ll Build • Orchestration Engine: Event-driven task graph execution - breaking complex business workflows into composable steps, delegating to the right agent or human at the right time, with robust failure handling and retries., • Core Platform: Auth, API endpoints, integrations (Slack, GSuite, CRMs, accounting tools), and dashboards. Everything that Foundry companies and their clients interact with daily., • Infrastructure: Docker, EKS on AWS, CI/CD, monitoring, and cost management. You own the full stack from development through to production., • Frontend: Client-facing dashboards, internal tools, and admin interfaces. This is a genuine full-stack role - you own the frontend, not just unblock yourself on it., • Product Direction: You work closely with the founding team to translate cohort feedback and client needs into engineering decisions. What to build matters as much as how you build it. What We’re Looking For • Strong software engineering - you write clean, production-quality code and you ship fast. You’ve built and deployed real systems, not just prototypes., • Genuinely full-stack. Backend, infrastructure, and frontend (React/TypeScript). You don’t wait for someone else to build the other half., • Experience with event-driven or workflow orchestration systems. You understand what breaks when you move beyond simple request-response., • Comfortable with AWS (EKS, IAM, networking) and modern CI/CD practices., • Fluent with modern AI tooling - you use Cursor, Claude Code, or similar daily and it makes you faster. AI tooling is not optional here., • Comfortable with ambiguity and startup pace. Priorities shift weekly based on cohort feedback., • Right to work in the UK permanently. We care less about • Your degree (or lack of one), • How many years you’ve been working - we care about what you’ve shipped, • Whether you’ve published papers Tech Stack • Backend: Python, • Frontend: TypeScript, React, Vite, • Infrastructure: AWS (EKS), Docker, Inngest (event-driven orchestration), • Tools: Cursor, Claude Code, GitHub Why Join • Ownership. Significant equity as a founding engineer. The platform you build is the platform every Foundry company runs on., • Real traction. Paying customers, founding cohort live, and a significant raise in preparation. What you build in the next 6–12 months directly determines whether we hit 10 companies by September., • Exceptional team. Co-founder who sold his AI company to WPP for $100M. Product leader who scaled a Meta platform to 400K+ users. Research team published at top AI venues with work adopted by leading universities and Fortune 500 R&D teams. Advisors include a leading NLP researcher and a Google DeepMind team lead., • Flexibility. Fully remote, UK timezone. Regular offsites. We care about what you ship, not when you’re online. We’re hiring immediately. The process is fast: we make offers within one week.

Office Administrator / Researcher (Dutch) Please note these opportunities are for an immediate start Please also note this is a 5 day-a-week in office position, there is limited remote working due to sensitivity and confidentiality of the work The Opportunity Working for one of the biggest global companies in the world, this is a brilliant 6-month temporary position for Dutch speaking professionals to work as one of their Machine Learning Assistants in their head offices in central London. Working as part of a wider team, the role itself will be undertaking tasks such as dialogue evaluation on speech, text, audio and video data. The Role • Work with a range of data including text, speech, audio, image, and video, • Deliver high-quality labelled data, using guidelines provided to meet KPIs, • Analyse root causes, identify error patterns, and propose solutions to enhance the quality of labelling tasks and their outputs, • Generate high-quality human insight data across a range of channels, • Make sound judgments and logical decisions with ambiguous or incomplete information, • Identify process and operational issues and suggest changes to unblock operations The Person • Fluency in Dutch language (CEFR C1+), • Written and spoken knowledge of English (CEFR C1+), • Strong business writing skills with ability to create reports and proposals etc., • Advanced reading comprehension with ability to analyse complex business documents, • Developed research, analytical thinking and structured problem-solving capabilities, • A keen eye for detail and ability to pivot from one category of requirement to another The Details • Location: Central London (zone 1), • Working: In offices, 5 days a week (no remote work due to sensitivity/confidentiality), • Contract: Temporary, • Length of project: 6 months with potential to extend, • Daily rate: £140 + holiday allowance (c. £160) – paid via PAYE (i.e. weekly payroll)

We're building the Moody's of autonomous systems. This is the technical co-founder role. $650B+ of sovereign AI investment is being deployed globally. The EU AI Act enforces from August 2026. UK SM&CR makes executives personally and criminally liable for AI they deploy. Lloyd's is excluding GenAI from policies entirely. Every regulated institution deploying AI needs independent verification infrastructure — and no infrastructure-grade solution exists. We're building it. Not compliance SaaS. Not an LLM wrapper. Infrastructure that sits between autonomous systems and the regulated world — the way Moody's sits between issuers and capital markets. Harvey AI ($5B) did this for legal. Vanta ($4.15B) did it for compliance. We're doing it for sovereign AI verification. The CEO brings deep regulatory networks — King's Counsel, ex-FCA regulators, Lloyd's underwriters, sovereign government relationships across UK, EU, and GCC. A Founding Engineer is in place for implementation. What's missing is the technical leader who sets the architectural direction and builds this into a category-defining company. The hard problems: → Verification models for AI systems that are themselves evolving — continuous evaluation, not static audits → RLHF annotation schemas that capture regulatory nuance across jurisdictions without collapsing to generic labels → A data flywheel where every expert attestation compounds into increasingly accurate automated review → Sovereign-first infrastructure with structural immunity to foreign jurisdictional overreach → Real-time telemetry for multi-agent systems with sub-second intervention capabilities What you'd own: Year 1 — The architectural decisions that determine whether this becomes infrastructure or just another SaaS product. Sovereign cloud design. RLHF schema. Verification model approach. Data architecture. You work alongside a Founding Engineer and ship the MVP as the technical co-founder who sets the standard for everything that follows. Year 2+ — Scale the engineering team. Multi-zone sovereign deployment. Cascade kill switch for multi-agent systems. You're in the room for the major VC round explaining why the sovereign data moat and regulatory lock-in create a defensible infrastructure company. The opportunity: • Co-founder-level equity — meaningful double-digit stake, 4-year vest, 1-year cliff, milestone acceleration, • Bootstrap model — VC round raised from strength, not desperation, • Below-market cash Year 1, scaling aggressively with revenue, • London preferred, UK remote considered You might be: → A researcher or senior engineer from DeepMind, Meta FAIR, Anthropic, OpenAI, or a frontier AI lab → A senior infrastructure engineer from CrowdStrike, Datadog, Palantir, or Stripe → An exceptional graduate of Cambridge, Oxford, Imperial, ETH Zurich, CMU, Stanford, MIT, or equivalent — with open source, shipped products, and published research (NeurIPS, ICML, IEEE) → A senior engineer from RegTech/FinTech (Onfido, ComplyAdvantage, Thought Machine, Quantexa, Revolut) Must-haves: • You write production code today — Python + cloud infrastructure minimum, • You've built and shipped, not just researched, • You can hold your own in a Tier 1 VC partner meeting, • Based in the UK or relocating. Full-time from day one. DM me with: (1) What you've built — be specific (2) A link (GitHub, paper, product) (3) Why this problem interests you No generic CVs. Builders only.

Office Administrator / Researcher (French) Please note these opportunities are for an immediate start Please also note this is a 5 day-a-week in office position, there is limited remote working due to sensitivity and confidentiality of the work The Opportunity Working for one of the biggest global companies in the world, this is a brilliant 6-month temporary position for French speaking professionals to work as one of their Machine Learning Assistants in their head offices in central London. Working as part of a wider team, the role itself will be undertaking tasks such as dialogue evaluation on speech, text, audio and video data. The Role • Work with a range of data including text, speech, audio, image, and video, • Deliver high-quality labelled data, using guidelines provided to meet KPIs, • Analyse root causes, identify error patterns, and propose solutions to enhance the quality of labelling tasks and their outputs, • Generate high-quality human insight data across a range of channels, • Make sound judgments and logical decisions with ambiguous or incomplete information, • Identify process and operational issues and suggest changes to unblock operations The Person • Fluency in French language (CEFR C1+), • Written and spoken knowledge of English (CEFR C1+), • Strong business writing skills with ability to create reports and proposals etc., • Advanced reading comprehension with ability to analyse complex business documents, • Developed research, analytical thinking and structured problem-solving capabilities, • A keen eye for detail and ability to pivot from one category of requirement to another The Details • Location: Central London (zone 1), • Working: In offices, 5 days a week (no remote work due to sensitivity/confidentiality), • Contract: Temporary, • Length of project: 6 months with potential to extend, • Daily rate: £140 + holiday allowance (c. £160) – paid via PAYE (i.e. weekly payroll)

Quant Researcher (HFT / MFT) – London | Hybrid (Remote for top candidates) We are working with a top-performing global trading firm building out their systematic stack across both traditional markets and crypto. They trade across HFT and MFT horizons, real focus on scalable, alpha-driven strategies across equities, futures, FX + digital assets. Looking for strong Quant Researchers who can come in and actually build. Ideal candidate is coming with more than 2 years experience in an established trading firm. What you’ll be doing: • Research + deploy alpha across HFT / MFT strategies, • Work with large, noisy, high-frequency datasets, • Find inefficiencies across venues, products, and asset classes, • Build models, test fast, iterate faster, • Work closely with traders + engineers to get things live, • Constantly optimise performance, execution, risk What they want: • Strong academic background (Maths / Physics / CS or similar), • Experience in HFT / MFT / short-term systematic trading, • Exposure to traditional markets and/or crypto, • Strong coding (Python, C++ etc.), • Actually understands market microstructure, • Has built alpha / contributed to live strategies Why it’s good: • Proper upside (bonus + PnL share), • Trading both TradFi + crypto, • Lean, high-performing team. No passengers, • Good infra, good data, no blockers, • Hybrid London, flexible for the right people, • Ideas go live, quickly Culture: • Meritocratic, • Low ego, • Straightforward, • Built around performance Up to £250k base + bonus + potential PnL share. Can be flexible for the right candidates. If this sounds like something you might be interested in, please apply with an up to date CV and we can arrange a time for a call. Many thanks, Ed

Founding Engineer (AI) Location: Remote first (global, UK timezone) Compensation: Up to £120,000 + significant equity Type: Full-time What is DeepFlow? DeepFlow is the hyperscaling platform. We launch and scale AI-native businesses. An operator with 10 years of domain expertise pairs with DeepFlow’s platform and engineering support to build a business that would previously have needed a team of 50. You’re building the agents that make it work. Where we are now • Platform live with paying customers across law, finance, recruitment, and media, • Launching our founding cohort through DeepFlow Foundry: deploying agents into real revenue-generating businesses, • Preparing for a significant raise to scale from 2–3 companies to 10+ by September, with a roadmap to 100 in 2027, • Research team published at AAAI 2026 (invited oral) and DAI 2025, with work adopted by top global universities and companies The Role You own the agent layer. Every AI workflow that runs on DeepFlow - the scaffolding, the prompts, the tool integrations, the evaluation pipeline - is your responsibility. Your decisions about agent architecture, provider selection, and quality assurance directly determine whether our companies’ AI delivers in production. This is a software engineering role with an agent specialisation. You’re a full-stack engineer first - you write backend services, build APIs, and ship features end-to-end. Your focus is the model layer, but you’re not siloed to it. You work directly with the CTO/CPO and CSO to shape product direction. Significant equity reflects the scope and impact of the position. What You’ll Build • Agent Scaffolding: Designing and building the frameworks that connect LLMs into reliable, production-grade workflows - prompt engineering, tool use, and multi-step chains that hold up at scale., • Provider Integration: Working with closed-source providers (OpenAI, Anthropic, Google, etc.) via OpenRouter. Managing model selection, fallbacks, cost optimisation, and latency across providers., • Agent Evaluation: Building the eval infrastructure that measures whether agents actually work - regression testing, quality metrics, and structured failure analysis., • Integration Engineering: Connecting agents to the external world: Slack, GSuite, CRMs, accounting tools, and domain-specific APIs. The integration layer that makes agents useful in real businesses., • Full-Stack Delivery: You write backend services, build API endpoints, and contribute to the frontend when needed. Agents don’t exist in a vacuum - this is still a software engineering role., • Product Direction: You work closely with the founding team to translate cohort feedback and client needs into agent architecture decisions. What to build matters as much as how you build it. What We’re Looking For • Strong software engineer first. You write clean, production-quality code and you ship fast. Real deployed systems, not notebooks., • Experience building with closed-source model providers in production - shipping agent workflows to real users, not just prototyping., • Practical understanding of prompt engineering, tool use, and agent evaluation. You know what makes an agent reliable versus what makes a good demo., • Full-stack capable. Backend (Python), infrastructure basics, and enough frontend (React/TypeScript) to ship features end-to-end., • Fluent with modern AI tooling - you use Cursor, Claude Code, or similar daily and it makes you faster. AI tooling is not optional here., • Comfortable with ambiguity and startup pace. Priorities shift weekly based on cohort feedback., • Right to work in the UK permanently. We care less about • Your degree (or lack of one), • How many years you’ve been working - we care about what you’ve shipped, • Whether you’ve published papers - this is an engineering role, not a research role Tech Stack • Backend & Agents: Python, pydantic-ai, proprietary agent frameworks, OpenRouter, • Frontend: TypeScript, React, Vite, • Infrastructure: AWS (EKS), Docker, Inngest (event-driven orchestration), • Tools: Cursor, Claude Code, GitHub Why Join • Ownership. Significant equity as a founding engineer. The agents you build power every business on the platform., • Real traction. Paying customers, founding cohort live, and a significant raise in preparation. What you build in the next 6–12 months directly determines whether we hit 10 companies by September., • Exceptional team. Co-founder who sold his AI company to WPP for $100M. Product leader who scaled a Meta platform to 400K+ users. Research team published at top AI venues with work adopted by leading universities and Fortune 500 R&D teams. Advisors include a leading NLP researcher and a Google DeepMind team lead., • Flexibility. Fully remote, UK timezone. Regular offsites. We care about what you ship, not when you’re online. We’re hiring immediately. The process is fast: we make offers within one week.

LEAD USER RESEARCHER – DV CLEARED • Up to £725 per day via Umbrella, • Initial contract until 17/07/2026, • Remote working with 4–5 visits per month to client sites across London and the South of England, • Active DV clearance required ABOUT THE CLIENT Our client is delivering a highly classified defence capability programme within a secure MOD environment. Working at Above Secret classification level, this programme will shape how critical services are delivered and supported across Defence. Due to the sensitive nature of the work, they are seeking an experienced DV Cleared Lead User Researcher to join a small, specialist project team. THE LEAD USER RESEARCHER ROLE: As Lead User Researcher, you will be responsible for planning and conducting user research within a classified MOD environment, adapting traditional research methods to work within security constraints. You will engage directly with senior military and civilian stakeholders and end users to understand how they currently operate, what they need, and how moving from Secret to Above Secret environments will affect them. You will also: • Produce user personas, journey maps and process maps, • Deliver a Business Change Assessment covering onboarding, training and logistics impacts, • Define and document IMPEX processes for users and data entering and exiting the Above Secret environment, • Support the development of the service wrap, support model and runbooks, • Work closely with programme, security and architecture teams to ensure user needs are reflected in governance and accreditation decisions, • Document research findings in approved classified environments LEAD USER RESEARCHER ESSENTIAL SKILLS: • Demonstrable experience conducting user research within UK Public Sector or Defence environments, • Strong understanding of MOD culture, military structures and working practices, • Excellent qualitative research skills including interviews, workshops and contextual enquiry, • Experience working with restricted or small user groups in secure environments, • Ability to translate research into business change, onboarding and service design outputs, • Confident engaging with senior stakeholders including SCS and senior military personnel, • Experience working within Agile delivery teams alongside BAs, Architects and Security professionals, • Active DV clearance TO BE CONSIDERED: Please either apply via this advert or email your CV directly to . For further information, please call 07719 051875. By applying for this role, you give express consent for us to process and submit (subject to required skills) your application to our client in conjunction with this vacancy only.

About this job: Executive Search - Researcher/Delivery Consultant Hybrid - 3 days in office (Must be commutable to London) Basic salary - £40k plus commission I’ve partnered with an early-stage search and advisory firm as they look to expand the team with an Associate Researcher. You'll come with 6months-3 years' experience already within agency recruitment or executive search. My client is a strategic growth partners to some of the top VCs across the globe, working with early-stage SaaS, AI and Cyber Security start-ups taking them all the way to IPO or acquisition by building out their GTM and technical functions. This means you could be recruiting anything from a team of Account Executive's, Marketing and Customer Success roles through to VP/SVP leadership roles on a fully retained/exclusive search basis. This role is focused on delivery, this means you will not be responsible for new business / new client generation. Instead, your role will be focused on the candidates journey, in time, you will become more involved in Account Management and Client relationship management. Day to day your time will be spent market mapping, carrying out research, creating longlists and be involved in strategic outreach to candidates. They have a big focus on quality, they are well respected within the GTM recruitment market and genuinely trusted by the clients and candidates they partner with. In 2025 they supported a early stage start up scale from 10+ heads to close to 50. Other partnerships have included start ups / scale ups who have raised 9 figure rounds in funding. This opportunity sits in a genuinely interesting space, combining the credibility and quality of Executive Search with the pace and earning potential of agency, alongside the level of client partnership you’d typically expect in-house. You'll be based out of their London office 3x per week and will have the opportunity to visit clients across the globe, attending industry events. Benefits include unlimited holiday, remote working flexibility and the opportunity to relocate to their US office in future. They have a great culture, host regular socials and team trips away which have included Skiing and Vegas in the past. You’ll be educated to a good level, very literate, and an excellent communicator. Please contact me for more details.

Lead User Researcher - Remote and London/South of England - MUST BE DV CLEARED - 2 months+ - £743.75 per day blue chip client is urgently looking for a Lead User Researcher You MUST HAVE CURRENT ACTIVE DV CLEARANCE Clearance required: DV - Sole UK Location: Hybrid. Some travel to client sites required - London and South of England, estimated 4 to 5 times per month. Classified work must be conducted on-site in approved environments - remote working is limited by the nature of the programme. Job Description: Overview You will be the lead User Researcher on a classified THE CLIENT programme delivering an Above Secret version of a critical Defence capability. Working within a small, DV-cleared project team, you will engage directly with senior military and civilian THE CLIENT stakeholders and end user representatives to understand how users at Above Secret classification level work, what they need, and how the transition from the current Secret service will affect them. This is not a typical digital product research role. Access to users is controlled and constrained. Research must be conducted within classified environments and in compliance with THE CLIENT security protocols. You will need to be pragmatic, adaptable and comfortable operating in an environment where standard tooling, collaboration platforms and research methods may not be available or appropriate. Your findings will directly shape the business change assessment, user onboarding approach, IMPEX processes and service wrap for the programme. What you will be doing Planning and conducting user research within a classified THE CLIENT environment, adapting standard research methods to fit security constraints Engaging senior military and civilian THE CLIENT stakeholders and end user representatives to understand needs, workflows and pain points at Above Secret classification level Building and maintaining user personas, journey maps and process maps that reflect the AS user population - who they are, how they access the system, what they need to do and what changes from the current Secret service Producing the Business Change Assessment - mapping what changes for users moving from S to AS, identifying training needs, onboarding requirements and logistics constraints Defining and documenting the IMPEX approach - how users and data enter and exit the AS environment Identifying onboarding authorities, permissions and any transport or logistics needs for AS users Contributing to service wrap design - feeding user needs into the service model, runbook and support approach Working closely with the Project 1 Lead and Security Lead to ensure user needs are reflected in accreditation and governance decisions Documenting research findings in formats suitable for a classified programme - stored and shared only in approved environments Essential skills and experience Demonstrable experience conducting user research in UK public sector or defence environments - understanding of THE CLIENT culture, rank structures and how military and civilian users operate is highly desirable Strong qualitative research skills - interviews, contextual enquiry, workshops, stakeholder engagement - with the ability to adapt methods to restricted access environments Ability to work with a small, constrained user population rather than broad consumer research panels Experience translating research findings into clear business change and service design outputs Comfortable engaging with senior stakeholders (SCS, OF-5 and above) with confidence and credibility Ability to document findings clearly and concisely for governance and assurance audiences, not just product teams Experience working within Agile delivery teams alongside BAs, architects and security professionals Desirable Prior experience on classified or Above Secret programmes Familiarity with GDS Service Standard and Government Design Principles Experience producing business change assessments, user impact assessments or service readiness documentation Working knowledge of JIRA and Confluence" Please send CV for full details and immediate interviews. We are a preferred supplier to the client.

Operations Research Scientist Remote, UK 12 month contract £600-£700 per day Inside IR35 I am working with a leading enterprise B2B2C who are seeking a Senior Operations Researcher to join them to work on a key project within the logistics domain. You will have built an optimization model using MILPs, heuristics, decomposition, or other methods (big focus on linear optimization, not so much on non-linear). In terms of skills you should have strong working experience with optimization solvers (e.g. Gurobi, Cplex, FICO Xpress optimization or other).

SC Cleared User Researcher - Remote - £540/day Inside IR35. User Researcher with active SC clearance.

Collaborate with researchers to refine benchmarks across undergraduate to PhD-level chemistry topics. Turing supports customers in two ways: first, by accelerating frontier research with high-quality data, advanced training pipelines, plus top AI researchers who specialize in coding, reasoning, STEM

We're building the Moody's of autonomous systems. This is the technical co-founder role. $650B+ of sovereign AI investment is being deployed globally. The EU AI Act enforces from August 2026. UK SM&CR makes executives personally and criminally liable for AI they deploy. Lloyd's is excluding GenAI from policies entirely. Every regulated institution deploying AI needs independent verification infrastructure — and no infrastructure-grade solution exists. We're building it. Not compliance SaaS. Not an LLM wrapper. Infrastructure that sits between autonomous systems and the regulated world — the way Moody's sits between issuers and capital markets. Harvey AI ($5B) did this for legal. Vanta ($4.15B) did it for compliance. We're doing it for sovereign AI verification. The CEO brings deep regulatory networks — King's Counsel, ex-FCA regulators, Lloyd's underwriters, sovereign government relationships across UK, EU, and GCC. A Founding Engineer is in place for implementation. What's missing is the technical leader who sets the architectural direction and builds this into a category-defining company. The hard problems: → Verification models for AI systems that are themselves evolving — continuous evaluation, not static audits → RLHF annotation schemas that capture regulatory nuance across jurisdictions without collapsing to generic labels → A data flywheel where every expert attestation compounds into increasingly accurate automated review → Sovereign-first infrastructure with structural immunity to foreign jurisdictional overreach → Real-time telemetry for multi-agent systems with sub-second intervention capabilities What you'd own: Year 1 — The architectural decisions that determine whether this becomes infrastructure or just another SaaS product. Sovereign cloud design. RLHF schema. Verification model approach. Data architecture. You work alongside a Founding Engineer and ship the MVP as the technical co-founder who sets the standard for everything that follows. Year 2+ — Scale the engineering team. Multi-zone sovereign deployment. Cascade kill switch for multi-agent systems. You're in the room for the major VC round explaining why the sovereign data moat and regulatory lock-in create a defensible infrastructure company. The opportunity: • Co-founder-level equity — meaningful double-digit stake, 4-year vest, 1-year cliff, milestone acceleration, • Bootstrap model — VC round raised from strength, not desperation, • Below-market cash Year 1, scaling aggressively with revenue, • London preferred, UK remote considered You might be: → A researcher or senior engineer from DeepMind, Meta FAIR, Anthropic, OpenAI, or a frontier AI lab → A senior infrastructure engineer from CrowdStrike, Datadog, Palantir, or Stripe → An exceptional graduate of Cambridge, Oxford, Imperial, ETH Zurich, CMU, Stanford, MIT, or equivalent — with open source, shipped products, and published research (NeurIPS, ICML, IEEE) → A senior engineer from RegTech/FinTech (Onfido, ComplyAdvantage, Thought Machine, Quantexa, Revolut) Must-haves: • You write production code today — Python + cloud infrastructure minimum, • You've built and shipped, not just researched, • You can hold your own in a Tier 1 VC partner meeting, • Based in the UK or relocating. Full-time from day one. DM me with: (1) What you've built — be specific (2) A link (GitHub, paper, product) (3) Why this problem interests you No generic CVs. Builders only.

As a dedicated Media Researcher, you will become one of our secret weapons in getting our clients ahead of all their competitors. Conduct media research and manage databases to provide teams with accurate, up-to-date information to support client campaigns and initiatives.

An early-stage AI startup in the UK seeks 2x AI Engineers/Researchers to join a highly technical team. The company offers a generous equity package, unlimited leave, and remote working options.

A leading trading research platform is seeking a CFD & Futures Researcher to support high-quality research across proprietary trading firms. A remote work model with a focus on collaboration is offered.

A leading UK-based executive search firm is seeking a Recruitment Researcher to support finance recruitment efforts.

Remote - United Kingdom | Threat & AI Research. We're looking for a talented AI Security Researcher to join our team and play a critical role in Wiz's foundational, risk-driven approach to cloud security.

Location: Remote About the job. Researcher - Lean 4 & Formal Proof Systems. Collaborate with researchers to design, refine, and evaluate strategies for improving formal verification pipelines.

A global digital consultancy firm is looking for a Senior User Researcher to enhance user-centric design practices. This role is based in Greater London, UK, with opportunities for remote work.

A global Digital and Data consultancy is seeking a Senior User Researcher to join their User-Centred Design practice.

A leading AI research organization is hiring a General Postdoctoral Researcher on an hourly contract basis. The successful candidate will develop and solve advanced problems in collaboration with researchers to enhance AI models. The position offers competitive compensation of up to $90/hr and is fu

The role offers a remote-first working environment with occasional travel and a competitive daily rate. A leading tech consultancy is seeking a User Researcher to support a public sector project on a rolling 3-month contract.

Why Join Us: - Competitive pay and flexible remote work. Location: Remote About the job. Applied Formal Methods Researcher (Lean 4).

A leading technology solutions company in the UK is seeking a Senior User Researcher Consultant to lead user research for their Public Sector clients. This role requires a strong background in user research methodologies, extensive experience in Agile environments, and the ability to mentor junior r

A fast-growing UK digital consultancy is seeking a User Researcher to lead user research activities and shape user-centred design solutions. This is a full-time, remote position for 12 months, ensuring a vital role in digital transformation efforts.

A consulting firm is seeking a German-speaking User Researcher to support their UK team on a contract basis.

Recruitment Researcher / Resourcer.

A global fashion shopping platform is seeking a Senior User Researcher to enhance customer-driven product decisions. This position offers numerous benefits including competitive family leave, a training allowance, and the flexibility of remote work options.

Quantitative Analyst/Researcher - Energy Trading Firm - UK Remote, Doha Qatar Travel. Quantitative Analyst/Researcher.

A leading consulting firm in the UK is seeking a User Researcher to join their multidisciplinary team.

A leading AI research firm is seeking an Oncology Clinical Researcher. Competitive pay and remote flexibility offered.

A leading recruitment firm seeks a Quantitative Researcher for roles in London or Remote.

A leading tech consultancy in the UK is seeking a Senior User Researcher for a 3-month contract on a public sector project. This role supports remote work with occasional travel, offering competitive compensation of £630 per day outside of IR35.

A leading technology services company in Greater London seeks a Senior User Researcher Consultant to lead user research projects that drive product and service decisions.

A tech consultancy in the UK is seeking two Senior User Researchers to shape digital government services affecting millions.

An innovative tech research lab is seeking an AI Researcher to advance the science of audio-visual avatar generation. The position is based in London or San Francisco (hybrid), with the possibility of remote work within Europe or the U.

A leading defence consultancy is seeking an experienced DV Cleared Lead User Researcher to conduct user research within secure MOD environments. Active DV clearance is required for this on-site role with occasional remote work.

A technology company in the United Kingdom is looking for an Android Security Researcher to advance their mobile intelligence capabilities. This is a 100% remote job offering an opportunity to work within a technically proficient team.

A consultancy firm is seeking a senior user researcher for a 6-month contract. This position offers remote work options and requires a preference for SC clearance.

Remote candidates are welcome, and the position includes flexible scheduling and unlimited PTO. A pioneering AI research lab based in the United Kingdom is looking for a Senior Researcher to lead research in generative audio and video models.

A consultancy firm is seeking a Senior User Researcher for a 6-month contract in the public sector. This is a remote position with a daily rate around £400 and requires SC clearance.

Turing is seeking PhD-level researchers in Biology to test the reasoning capabilities of large language models (LLMs). Evaluate the logic behind a researcher’s claims about immune signaling. Strong written communication, especially in remote settings.