Senior system engineer jobs in United Kingdom - Page 3

Senior Product Engineer (Fullstack Software Engineer+AI) London, Old Street, Onsite, AI Agents, Skippr AI (direct, no agency please) ⭐ About the role We’re looking for a Product Engineer to join our small but high-calibre team in Old St. We’re a team that’s 100% AI-native — not just building AI agents, but using them daily to supercharge our own workflows. Our mission is to reinvent product development through specialised AI agents. We started with product design agents, and now we’re building something entirely new and multimodal — we’re pushing the limits of what agents can do. Skippr is backed by top VCs, like Bessemer (Anthropic, Perplexity, Shopify), and executives from Fiverr, Meta, Google, Lyft and more. 🏗️ What you’ll do • Modern stack: Build scalable systems using FastAPI, React, Supabase or similar modern technologies — we care more about your ability to ship quality code than specific stack experience. Own everything from database design to AI agent orchestration., • Agent Experience (AX): Shape intuitive interfaces for human–agent collaboration. Rapidly prototype and iterate with engineers and designers to discover the right interaction models for working productively with agents., • LLM Agentic Workflows: Build a system of agents — tool use, memory, retries, context updates, feedback loops, and MCP integration., • System Design & Technical Strategy: Partner directly with founders to define the technical path that balances moving fast now with scaling to many customers and dev tools later. ✅ This role is for you if • You’re a full-stack 0→1 builder who has shipped to production — ideally rapidly shipping apps and building scalable systems in containerised environments., • You’ve been a founder or founding engineer. You know what it means to build something from scratch that real people actually use or pay for., • You thrive in ambiguity. You can juggle shifting priorities, decide when to let small fires burn, and when to dive in., • You have grit. You’re used to hard tradeoffs and pushing through the messy middle to get to something great. ❌ This role is not for you if • You want remote or hybrid work. We believe early-stage startups win by moving fast in the same room — this is an in-office role, 5 days a week in our Old St office., • You dislike ambiguity. Priorities shift, experiments fail, and new opportunities appear — if you prefer stable roadmaps, this isn’t the place., • You don’t enjoy 0→1 environments. Early-stage means wearing multiple hats, solving unscoped problems, and building with imperfect information. 🤝 What we offer • Competitive salary + meaningful equity (EMI options): Everyone here has skin in the game and upside if we win., • Comprehensive benefits: Pension, private health insurance, and 25 days holiday plus bank holidays., • Real influence on architecture: You’ll make foundational decisions on our platform design that will shape how future engineers build on top of it., • Exposure across the startup stack: Beyond code — sit in on user interviews, shape product strategy, and get a front-row seat to how startups actually grow., • A team that’s genuinely excited: We’re obsessive about the problem, love what we’re building, and keep the culture sharp but supportive.

Senior Performance Engineer - UK Ready to Make a Real Impact? Join e-STORAGE! Who We Are Welcome to e-STORAGE, a proud member of the Canadian Solar Inc. (NASDAQ: CSIQ) family! We’re leading the way in designing, building, and integrating advanced battery energy storage systems for utility-scale projects. Our mission? To accelerate the world’s renewable energy transition and create a more sustainable, resilient energy future for everyone. With our innovative SolBank lithium-iron phosphate battery technology and comprehensive project services, we’re not just building products we’re powering communities and making a difference worldwide. Role Overview for Senior Performance Engineer In this role, you’ll bring together the sharp analytical mindset of a controls engineer and the hands‑on problem‑solving instincts of a commissioning engineer to efficiently troubleshoot complex issues and pinpoint root causes on operating systems. You’ll take ownership of diagnosing performance challenges and work closely with internal teams and external vendors to drive solutions, validating and evaluating firmware and software updates to ensure system security and reliability, minimizing downtime. Your insights will feed back to internal teams and product improvements to drive a cycle of continuous improvement. If you thrive on tackling new challenges, enjoy rolling up your sleeves, and love the satisfaction of solving problems that matter, this role keeps you continuously engaged and at the center of meaningful, hands‑on innovation. What You’ll Be Doing as a Senior Performance Controls Engineer • Prioritize, investigate, and drive the corrective action for performance issues identified during facility operation., • Troubleshooting and root cause analysis using data analysis, first principles, on site investigation, or other means as needed., • Validate software/firmware updates in coordination with vendors, the site service team, and relevant stakeholders to confirm documented changes and no unintended consequences are introduced. Coordinate subsequent rollouts with the appropriate site service teams., • Effectively communicate issues to the appropriate vendor and stakeholders to ensure resolutions are identified and implemented., • Support performance testing as required under individual contracts for each facility., • Contribute to fleet wide efforts for improving the efficacy of monitoring and analysis processes and tools., • Collaborate with internal teams to provide input to improve performance across the business from applications and design to project execution and commissioning to service., • Provide documentation of issues and resolutions for tracking, knowledge sharing, and internal and external communications., • Ensure all activities are performed in compliance with safety protocols, engineering standards, and company policies. What You’ll Bring to the Position • Demonstrated experience in customer-focused problem solving, • Ability to execute projects and tasks in parallel, self-directed, highly detail-oriented, organized and flexible, • Experience troubleshooting using data analytics, • Experience in commissioning, performance testing, maintenance, and/or design of BESS or other power generating facilities, • Knowledge and experience with SCADA protocols (i.e. DNP3 and Modbus), • Familiarity with industrial communication networks (fiber optics, network switches, TCP/IP, etc.), • Excellent communication skills, • Ability to travel up to 20% of time. Travel may be on short notice, • Demonstrated experience in problem solving What It’s Like to Work Here At e-STORAGE, you’re more than just an employee—you’re part of a team that values your ideas, your background, and your unique perspective. We believe that a culture of equity, diversity, and inclusion isn’t just the right thing to do—it’s the secret to our success. Here, you’ll find: • Integrity: We do what’s right, always., • Innovation: We encourage fresh thinking and bold ideas., • Quality: We take pride in delivering excellence, every time., • Customer Focus: We listen, we care, and we deliver., • Sustainability: We’re passionate about protecting our planet for future generations. Why You’ll Love Working With Us • Join a global leader in renewable energy, backed by over 23 years of Canadian Solar experience., • Work on projects that matter—helping to build a cleaner, greener world., • Thrive in a supportive, collaborative environment where your growth is our priority., • Enjoy a competitive salary and a generous benefits package. Want to join here is what we are looking For • The right mix of education, experience, and skills for the role., • Great communication, teamwork, and problem-solving abilities., • A true commitment to safety, ethics, and sustainability. Your Rewards We offer a competitive salary, performance bonuses, and a comprehensive benefits package—including health coverage, retirement plans, paid time off, and more. Our Commitment to Equality & Diversity “At e-STORAGE, we know that diverse teams drive innovation and better results. We’re committed to creating a workplace where everyone feels respected, valued, and empowered—regardless of age, race, gender, ability, or background. When you join us, you’re joining a community that celebrates your uniqueness and supports your success.” — Libby, Sr. Global HR Manager

Job Title: Senior Verification Engineer – RF/DSP Job Description: We are seeking a Senior Verification Engineer with strong expertise in RF/DSP signal-chain verification. The role focuses on driving end-to-end verification of complex DSP and RF blocks using UVM-based methodologies and advanced verification techniques. You will work closely with design and algorithm teams to validate signal-processing functionality and ensure high-quality silicon. Key Responsibilities: • Lead verification of RF/DSP signal-chain blocks using UVM, • Develop and maintain UVM testbenches and integrate VIPs, • Verify DSP algorithms such as FFT, FIR filters, and channelizers, • Create Python-based verification utilities and support CI/CD flows, • Strong hands-on experience with UVM and SystemVerilog, • Proven DSP verification experience (FFT, FIR, channelizers), • Proficiency in Python scripting and CI/CD environments, • MATLAB experience for algorithm modeling and validation

We’re expanding our engineering team and hiring a Senior Python Software Engineer to help own and develop an established trading-related application. The system runs in production, processes high-frequency real-time data, and needs careful performance engineering and disciplined testing to keep latency and reliability where they should be. You’ll take meaningful ownership day-to-day, partnering closely with the founder and the engineering team to prioritise work, ship improvements quickly, and keep the system fast, reliable, and correct. Location: UK-based preferred Working style: Mostly remote, occasional in-person days for planning/coordination Support: Availability during core market hours when needed What You’ll Do • Own and improve a production Python codebase that runs during market hours., • Build and optimise real-time data pipelines (throughput, p50/p99 latency, jitter)., • Do profiling-driven performance work across ingestion → compute → messaging → consumers., • Improve reliability: freshness/staleness handling, safe degradation, back pressure, fault isolation., • Strengthen “developer leverage”: replay/simulation tools, regression tests, and debugging tooling., • Work with cloud infrastructure, deployment, monitoring, and incident response., • Collaborate directly with the founder and engineering team on architecture and roadmap. Essential Skills • 5+ years professional Python experience; you’ve shipped and owned production systems., • Built/owned a real-time / low-latency system (not batch ETL) with measurable performance goals., • Strong understanding of async + multiprocessing tradeoffs and performance profiling., • Comfortable owning an existing codebase: refactors, tests, architecture improvements., • Experience with messaging / event-driven systems and strong API/schema discipline., • Production ownership mindset: incidents, monitoring, and fast debugging when it matters., • UK-based preferred and able to support core market hours when required. Desirable Skills • Experience with trading, market data, or execution systems., • Familiarity with Interactive Brokers TWS or other brokerage APIs, • Experience designing safety constraints/guardrails in automated systems. What We Offer • Competitive salary (negotiable) + performance-related bonus., • Mostly remote, with some in-office collaboration days for coordination and planning, • Lean environment, direct impact on a live system., • High ownership and influence over system design and roadmap.

Job Description Senior Systems Engineer Location: North LondonEmployment Type: Full-time About the Role We are seeking a Senior Systems Engineer to join a dynamic team working on innovative technology projects.This role covers the full systems engineering lifecycle—from concept through to deli

As a Senior Software Engineer at Ori, you’ll be a hands‑on technical leader, driving the design and development of our most critical systems, including our GPU orchestration layer, inference‑serving infrastructure, and core platform APIs. You’ll set the standard for engineering excellence ac

As a Senior Front End Engineer, you will own the technical architecture and implementation of our Design System, scaling best‑in‑class UX to almost half a million learners. Prototype and test new front‑end workflows that leverage AI and agentic tools. Mentor engineers to elevate front‑end cr

Embedded & Desktop Linux Systems Engineer - Optimisation. Senior Ubuntu Embedded IoT System Engineer. Sign in to set job alerts for “Senior Embedded System Engineer” roles.

Capula, part of the Dalkia Group, is a trusted leader in operational technology and digital transformation. For decades, we’ve delivered advanced system integration across the UK’s most critical infrastructure—from energy and renewables to water and manufacturing. With innovation at the heart of our business, we continue to shape the future of intelligent control and protection systems. We’re proud to foster an inclusive and equitable workplace where diversity is celebrated in all its forms. We actively encourage applications from individuals of minority backgrounds, underrepresented groups, and those with disabilities. Our goal is to create a supportive environment where everyone can thrive and contribute their unique perspectives. 🌟 Summary of the Role We’re seeking an experienced and technically accomplished Lead Engineer to join our Protection & Control team. You’ll be responsible for leading the design and implementation of Protection Systems for major clients across the UK’s Transmission and Distribution sector. These projects span greenfield installations, system upgrades, and integration with existing infrastructure. This is a senior role that blends technical leadership, stakeholder engagement, and strategic delivery. You’ll guide multidisciplinary teams, mentor engineers, and ensure that solutions meet both client expectations and regulatory standards. 🔧 Key Responsibilities • Lead and advise on Protection & Control content across projects, ensuring compliance with relevant standards, • Chair design workshops and review meetings, collaborating with internal and external stakeholders, • Develop system-level designs including SLDs, KLDs, architecture diagrams, and concept-level solutions, • Conduct site visits and non-intrusive surveys to support design validation, tendering, and implementation, • Produce and review technical documentation including Functional Design Specifications, Design Intent Documents, and Compliance Reports, • Lead the development of Protection & Control designs including schematics, general arrangements, layouts, calculations, and schedules, • Support client approval processes and ensure solutions meet all technical and contractual requirements, • Deliver assigned tasks and project milestones on time, within budget, and to the highest quality standards, • Provide technical input and feedback to support sales and tendering activities, • Assist project managers with programme planning, change identification, and cost control, • Proactively identify and manage technical risks to ensure smooth project execution ✅ Candidate Profile We’re looking for someone who brings deep technical expertise and strong leadership qualities: • Proven experience in UK Transmission & Distribution systems, • Hands-on knowledge of Protection & Control technologies from vendors such as GE, Siemens, SEL, ABB, • Working knowledge of IEC 61850 and its practical implementation, • Understanding of substation communication protocols and cybersecurity design considerations, • Structured and analytical approach to problem-solving, • Ability to lead, collaborate, and motivate multidisciplinary teams, • Excellent communication skills with internal teams and external stakeholders, • Degree-qualified in Electrical Engineering or a related discipline (Bachelor’s, Master’s, or equivalent), • Full UK driving licence and willingness to travel, • Familiarity with National Grid standards and policies (desirable but not essential) 🎁 What You’ll Get • 28 days holiday + bank holidays, • Flexible working arrangements, • Pension & private healthcare, • Life assurance policy, • Lifestyle screening, • Salary sacrifice programme, • Mental health assistance programme, • Cycle to work & green car schemes, • Support in achieving professional engineer status (IEng, CEng) and paid membership fees 📧 To express interest in this position, please send your CV and cover letter quoting the job reference number to . Note to employment agencies: We are currently working with only our preferred suppliers.

Hands-On CTOs | Meet London's Top Startup Founders in One Night | OPUS x Foundermatcha Event Skip the Job Boards. Meet Founders Directly. You've built products people use. Now it's time to build something that's yours. On February 4th in London, OPUS and Foundermatcha are hosting a Founder ↔ Engineer Speed-Dating Event designed for full-stack engineers who want to join early-stage startups at exactly the right moment. This isn't speculative networking. Every founder attending has been vetted by OPUS, London's premier invite-only community for elite startup founders, is actively building, and has a real need for technical leadership or early engineering support. Why This Event Exists Traditional startup hiring is broken. Founders post vague job descriptions. Engineers send dozens of applications. Nothing happens. We've built a better system. Conversations that skip the BS and go straight to: Could we build something great together? Who You'll Meet To give you a sense of who's attending: → A security-focused startup founder who reached $1M+ ARR in three months, now looking for a AI Engineer and a cybersecurity engineer → A serial entrepreneur building an inheritance management app, actively looking for LLM and Rust engineers → A founder of an AI-powered wealth management platform searching for a senior full-stack engineer with AI experience OPUS attracts ambitious builders working across SaaS platforms, consumer apps with early traction, fintech and proptech products, healthtech startups, and AI-powered tools. These aren't idea guys. They're founders with momentum who need someone technical to help them scale. What to Expect → 1:1 conversations with founders building real products → Vetted, exceptional founders from OPUS's exclusive ecosystem → Time to explore fit without the pressure of a formal interview → Relaxed environment with beer, pizza, and genuine conversations → Clear next steps if there's mutual interest—no ghosting, no ambiguity A Foundermatcha team member will personally follow up after the event to help you and your top matches move forward. Who Should Apply CTOs/engineers ready to join UK startups as co-founders or early team members. Compensation varies by stage, equity-heavy, cash, or hybrid setups. You might be: • A senior engineer wanting more ownership and impact, • Someone who's been freelancing and ready to commit to one vision, • An engineer frustrated by corporate velocity who wants to move fast, • A builder with side projects looking to turn one into a real company If you're ready to build, this is where it starts. Event Details 📅 Wednesday, February 4th | 6:00 PM - 9:00 PM 📍 London 💷 Tickets: £5 (includes food & drinks) How It Works • Submit your CV, • We'll review your profile and call shortlisted candidates to discuss fit, • If matched, you'll receive an event invite, • Attend the event and meet founders face-to-face in structured 1:1s About OPUS OPUS is London's most selective community for exceptional startup founders. Membership is invitation-only, curating the city's highest-caliber builders and providing them with world-class resources, mentorship, and network access to accelerate growth. About Foundermatcha Foundermatcha is a psychology-driven matchmaking platform for founders and engineers. We use AI to match people based on values, vision, and working style—not just skills on a résumé. Your next co-founder might be in the room. Apply now. If you're a fit, we'll reach out within 48 hours.

Job Description Our client is a deep-tech pioneer who has created an all-optical networking platform, replacing traditional electronic switches with light, transforming AI training. They are looking for a Senior Optical System Engineer with an excitement for transformative technology to come and jo

Good understanding of onshore cable routing, cable pulling and mechanical forces, cable burial risk assessments and protection strategies, electromagnetic, thermal and stability analysis, cable cleating and short‑circuit restraint. Undertake cable rating and system studies (ampacity, short circuit

A leading engineering firm in the City of London is seeking a Senior Electrical Engineer to manage electrical system designs for Data Centres.This role involves creating detailed designs and ensuring compliance with technical standards.The ideal candidate has over 5 years of experience in electrical

Knowledgeable with modern Linux systems and systems programming concepts such as sockets, virtual memory, and the process life cycle. Bachelor's degree in Computer Science, Software Engineering or other technical discipline (or equivalent experience).

A leading online real estate platform is seeking a Senior Backend Engineer II to develop features using Java and Spring Boot.The role involves collaborating with teams to enhance system performance and deliver technical solutions.Candidates should have experience with Java 17+, Elasticsearch, and st

A leading technology firm in the UK is seeking a Senior Design Engineer to evolve their design system while focusing on high-quality user experiences. Candidates must share a passion for UI craft and have experience building design systems.

A global consultancy is seeking a Senior Electrical Consulting Engineer to support complex power sector projects across the UK and beyond. Candidates should possess a degree in Electrical Engineering and have a strong understanding of the UK electricity system.

As a Senior System Engineer, you will:. Strong knowledge of modern Linux systems and systems programming concepts (e. Provide technical support for the production environment, ensuring system stability and performance.

Power System and Electrical Engineering experience in a systems or power electronics role. Provide power subsystem engineering, both high level architecture and detailed electronics design, from specification to integration. Perform requirements engineering (analysis, flow-up and down) related to sp

Senior Application Engineer (Python/Javascript/React) page is loaded## Senior Application Engineer (Python/Javascript/React)locations: London Officetime type: Full timeposted on: Posted 16 Days Agojob requisition id: R7261Job Summary:The Trading and Risk Management System (TRMS) team is

ICE Group Client’s search-driven data analytics solution is used by some of the world’s most successful companies. You’ll be responsible for monitoring cluster health and making sure services are always available in a cross-functional team environment.

Senior Software Engineer - Card Integrations - Visa / Mastercard. Senior Software Engineer - Card Integrations - Visa / Mastercard. Have experience with Visa or Mastercard system integrations.