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Field Sales Executive\n \n Location: Regional Field Sales (Your Local Area)Contract Type: Freelance / Self-Employed (Commission-Only)Compensation: Uncapped Upfront Commission + 5-Year Recurring Revenue | OTE £7,000-£10,000+/month\n \n Build a Business. Build Wealth. Build it with SumUp.\n \n \nReady to take on building your own business, backed by one of the world's leading fintech brands? This is just a job, its opp...\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n ZIPC1_UKTJ

As a freelance Personal Trainer, you'll be responsible for helping members achieve their health, fitness and performance goals through personalised coaching, exercise programming and lifestyle support. Showcase your coaching expertise through our exclusive member onboarding programme, MOVE. Success

What if your deep expertise in machine learning could directly influence how the next generation of AI systems reason, plan, and make decisions? We're looking for Senior Machine Learning Experts to help build the foundational training data that teaches large language models how to think — step by step, in real-world scenarios. This is a fully remote, flexible contract role designed for experienced ML professionals who understand model architecture, reasoning pipelines, and what separates good AI outputs from great ones. • Organization: Alignerr, • Type: Hourly Contract, • Location: Remote, • Commitment: 10–40 hours/week, • Author complex, high-fidelity reasoning traces that capture how an LLM should plan, use tools, and make decisions to solve real technical tasks, • Design structured, step-by-step decision-making data that trains AI models to reason more reliably in production environments, • Review and refine reasoning traces contributed by others, ensuring logical coherence, planning quality, and tool-use accuracy, • Develop data strategies for navigating intricate, multi-step problem scenarios that push model capabilities forward, • Apply senior-level architectural insight to validate that traces reflect sound, expert-level machine learning thinking, • Experienced machine learning professional with a strong foundation in model reasoning, training pipelines, or AI systems design, • Skilled at decomposing complex technical problems into clear, logical, well-documented steps, • Familiar with how large language models are trained, evaluated, and improved, • Detail-oriented — you notice when a reasoning chain breaks down or when a decision step is unclear or missing, • Comfortable working independently and asynchronously, producing high-quality work without hand-holding, • Prior experience with data annotation, data quality assurance, or AI evaluation systems, • Top-tier Kaggle competition results (Grandmaster or Master level), demonstrating elite model performance and feature engineering skills, • Hands-on experience designing or auditing LLM evaluation frameworks, • Background in AI safety, alignment research, or model interpretability, • Work on some of the most technically challenging AI training projects in the field, alongside leading research labs, • Fully remote and asynchronous — work when and where it suits you, on your own schedule, • Freelance autonomy with access to meaningful, senior-level technical work, • Make a direct, lasting impact on how the world's most advanced AI models reason and act, • Potential for ongoing work and contract extension as new projects launch #J-18808-Ljbffr

Fortify, a Cambridge-based fintech compliance startup, is seeking a freelance designer to own its visual output across marketing, sales and the website. You'll work with the marketing lead and CCO on branding and campaigns, with a Webflow developer to implement designs.

Job DescriptionExternal Site Manager I've been tasked to find an External Site Manager for a tier 1 main contractor on a freelance basis. It is to start ASAP and will finish early March 2027. The project is a major development in the Cambridgeshire, it is a crucial groundworks/external package that needs managing. You will be working alongside a Senior Project Manager to deliver the package. • SMSTS, • CSCS, • First Aid at Work, • Knowledge of groundworks, • Attending and contributing in contractor prestart meetings., • Attending and contributing in design team meetings., • Chairing weekly sub-contractor progress meetings, taking and issuing meeting minutes., • Attending safe starts., • Approving RAMS., • Attending DABS and contributing to the meeting, discussing coordination with other trades., • If necessary taking the meeting, issuing the DABS report to all other team members., • Enforcing H&S on site., • Identifying potential problems, offering buildability solutions., • Someone who is tech savvy., • Someone who can engage with the supply chain and other team members., • Day rate between £(Apply online only), • Temporary to permanent option, • Opportunity to work with a helpful site team #J-18808-Ljbffr

We’re partnering with the world’s leading AI research labs to build smarter, more technically rigorous AI models — and we need mechanical engineers to make it happen. As a Mechanical Engineering AI Trainer, you’ll go deep into the technical core of advanced language models: designing challenging engineering problems, authoring gold-standard solutions, and exposing the reasoning gaps that hold AI back. Your expertise in fluid dynamics, thermodynamics, structural mechanics, and beyond will directly shape how the next generation of AI understands the physical world. This is a rare opportunity to apply your engineering knowledge in a high-impact, flexible freelance role — no commute, no rigid schedule, just meaningful technical work on your terms. • Organization: Alignerr, • Type: Hourly Contract, • Location: Remote, • Commitment: 10–40 hours/week, • Design Advanced Engineering Problems — Craft complex, domain-spanning challenges across FEA, heat transfer, kinematics, fluid mechanics, and material science to rigorously stress-test AI reasoning, • Author Ground-Truth Solutions — Develop precise, step-by-step technical solutions that serve as benchmarks for AI learning and evaluation, • Audit AI-Generated Technical Content — Review AI outputs including CAD logic, thermodynamic proofs, and material specifications for accuracy, safety, and compliance with standards (ASME, ISO, etc.), • Sharpen AI Reasoning — Identify and document logical failures — incorrect force distributions, energy conservation violations, flawed assumptions — and provide structured feedback to improve model performance, • Advanced Degree — Master’s (pursuing or completed) or PhD in Mechanical Engineering, Aerospace Engineering, or a closely related field, • Strong Domain Knowledge — Deep foundations in one or more of: solid mechanics, fluid mechanics, thermodynamics, CAD/CAM, or manufacturing processes, • Technical Writing Ability — Capable of explaining complex physical phenomena and mathematical reasoning with clarity and precision, • Detail-Oriented — You catch unit conversion errors, faulty assumptions, and subtle logical inconsistencies without being prompted, • No AI experience required — We’ll get you up to speed, • Experience with data annotation, quality evaluation, or technical review workflows, • Familiarity with engineering software such as SolidWorks, MATLAB, or ANSYS, • Background in academic research, technical writing, or engineering consulting, • Work on the cutting edge — Collaborate with teams building some of the most advanced AI models in the world, • Fully remote and flexible — Work when and where it suits you, on a schedule you control, • Meaningful impact — Your technical judgement directly improves AI that engineers and researchers around the world will rely on, • Freelance autonomy — No bureaucracy, no micromanagement — just high-quality technical work with a global team, • Ongoing opportunity — Strong contributors are regularly considered for contract extensions and new projects #J-18808-Ljbffr

Senior Engineer - Civil Engineering Scheme Location: Cambridgeshire Rate: £375-425 per day - CIS or Ltd company available Duration: 6 months, rolling Are you a freelance Senior Engineer looking for your next contract? We're looking for an experienced Senior Engineer to join a civil engineering scheme in Cambridgeshire. This is a great opportunity for someone who is confident with take-offs, material management and quality systems to take a lead role within the engineering team. You'll be responsible for the technical and quality side of the works, making sure materials are accurately quantified and ordered, and that ITPs are in place and followed. • Producing quantity take-offs from drawings and models., • Managing materials, including scheduling, ordering and tracking deliveries against programme., • Creating and developing Inspection & Test Plans (ITPs) and associated check sheets., • Leading and mentoring site engineers on setting out and quality control., • Making sure works are delivered to specification and quality records are kept up to date., • Working closely with the Agent, commercial team and subcontractors., • Proven experience as a Senior Engineer on civil engineering schemes., • Experience producing take-offs and managing materials., • Experience creating and developing ITPs., • EUSR 1 & 2- Essential, • First Aid (desirable) #J-18808-Ljbffr

What if your expertise in clinical trial operations could directly shape how AI understands and reasons about healthcare research? We're looking for experienced Clinical Study Managers to help oversee the operational execution of clinical trials — and to bring that real‑world knowledge to the frontier of AI development. What if your expertise in clinical trial operations could directly shape how AI understands and reasons about healthcare research? We're looking for experienced Clinical Study Managers to help oversee the operational execution of clinical trials — and to bring that real‑world knowledge to the frontier of AI development. This is a fully remote, flexible contract role built for seasoned clinical research professionals who want meaningful, high‑impact work on their own schedule. • Organization: Alignerr, • Type: Hourly Contract, • Location: Remote, • Commitment: 10–40 hours/week, • Manage clinical trial timelines, milestones, and deliverables to keep studies on track and on budget, • Oversee study budgets, financial forecasting, and cost tracking across multiple vendors and research partners, • Coordinate with CROs, investigative sites, and internal teams to ensure smooth, compliant study execution, • Identify operational risks early, resolve issues proactively, and keep stakeholders aligned throughout the trial lifecycle, • Apply your clinical research expertise to evaluate and improve AI‑generated content in healthcare and life sciences contexts, • Experienced clinical trial project manager with a strong command of budgets, timelines, and trial logistics, • Skilled at managing CROs, vendors, or external research partners across complex multi‑site studies, • Able to coordinate multiple workstreams simultaneously without losing sight of the details, • Methodical, organized, and confident operating independently in a remote environment, • Clear written communicator who can document findings and feedback with precision, • Prior experience with data annotation, data quality review, or evaluation workflows, • Familiarity with AI tools or clinical data platforms, • Background spanning multiple therapeutic areas or study phases, • Experience contributing to regulatory submissions or audit‑ready documentation, • Work alongside world‑leading AI research teams on projects at the intersection of healthcare and technology, • Fully remote and flexible — set your own hours and work from anywhere, • Freelance autonomy with the structure of meaningful, task‑based assignments, • Gain direct exposure to how advanced AI models are trained using real‑world clinical expertise, • Potential for ongoing work and contract extension as new projects launch #J-18808-Ljbffr

We're looking for chemistry experts to help evaluate and improve AI systems trained on scientific content. Your deep subject knowledge will directly shape how AI understands and reasons through complex chemistry problems — making a real impact on the next generation of large language models. Work with Alignerr, a trusted partner to the world's leading AI research labs, and contribute to projects that push the boundaries of what AI can do in science. • Organization: Alignerr, • Type: Hourly Contract, • Location: Remote, • Commitment: 10–40 hours/week, • Design advanced chemistry problems to rigorously test AI reasoning and performance across domains such as chemical engineering, biochemistry, and physical chemistry, • Develop clear, step-by-step solutions that demonstrate structured, logical thinking, • Evaluate AI-generated outputs for scientific accuracy, depth of reasoning, and quality, • Collaborate with researchers to refine and improve benchmarks spanning undergraduate through Masters-level chemistry topics, • Work independently and asynchronously on your own schedule, • Currently pursuing or have completed a Master's degree in Chemistry, Chemical Engineering, Biochemistry, or a closely related field, • Strong analytical and problem-solving skills across advanced chemistry domains, • Able to communicate complex scientific concepts clearly and precisely in writing, • Detail-oriented with the ability to provide structured, actionable feedback, • Self-motivated and reliable when working independently, • No prior AI experience required, • Experience with data annotation, data quality assessment, or evaluation systems, • Familiarity with AI or machine learning workflows, • Background spanning multiple chemistry subdisciplines, • Work on cutting-edge AI projects with top-tier research labs, • Fully remote and flexible — work on your own schedule, • Freelance perks: autonomy, variety, and global collaboration, • Contribute to meaningful work that advances AI scientific reasoning, • Potential for ongoing work and contract extension, • Direct engagement with industry-leading large language models #J-18808-Ljbffr

Location: United Kingdom (Home-Based) Contract Type: Freelance FTE: 1. We are seeking an experienced Freelance Site Activation Specialist based in the United Kingdom to support clinical trial start-up and site activation activities.

What if your expertise in genomic and clinical data could directly shape how AI understands and advances personalized medicine for millions of patients? We're looking for a Precision Medicine Data Lead to guide how complex healthcare datasets are integrated, governed, and transformed into the insights that power next-generation AI models in clinical research and personalized treatment. This is a fully remote, flexible contract role built for experienced data professionals in genomics, life sciences, or clinical analytics who want to work on something that genuinely matters. • Organization: Alignerr, • Type: Hourly Contract, • Location: Remote, • Commitment: 10–40 hours/week, • Design, oversee, and optimize data pipelines that integrate genomics, clinical records, biomarkers, and other healthcare data into unified analytics platforms, • Lead analytical strategies that convert complex, multi-source datasets into actionable insights for clinical decision support and precision medicine initiatives, • Evaluate and validate the quality, accuracy, and integrity of healthcare and genomic data used in AI training workflows, • Collaborate with clinicians, researchers, and technical teams to ensure data governance and regulatory compliance, • Translate findings and data strategies clearly for both scientific and non-technical stakeholders, • Identify gaps, inconsistencies, and opportunities for improvement across integrated healthcare datasets, • Experienced working with large-scale healthcare, genomic, or life sciences datasets in analytics or data leadership roles, • Strong background in data integration, data governance, and translating complex data into meaningful insights for scientific or clinical audiences, • Comfortable working cross-functionally with clinical, research, and engineering teams in regulated or highly technical environments, • Detail-oriented and systematic — you hold data to a high standard and know how to communicate why it matters, • Self-motivated and reliable when working independently in an asynchronous, remote environment, • Prior experience with data annotation, data quality evaluation, or AI training data workflows, • Familiarity with bioinformatics pipelines, EHR systems, or clinical trial data structures, • Background in translational research, computational biology, or clinical informatics, • Experience working in regulated environments such as HIPAA-compliant or GxP settings, • Work on cutting-edge AI projects alongside world-leading research labs, • Fully remote and flexible — work when and where it suits you, • Freelance autonomy with the structure of meaningful, high-impact work, • Contribute directly to AI systems that could reshape how medicine is practiced worldwide, • Exposure to advanced large language models and how they are trained on specialized scientific data, • Potential for ongoing work and contract extension as new projects launch #J-18808-Ljbffr

IQVIA is seeking an experienced freelance Site Activation Specialist based in the United Kingdom to support clinical trial start-up and site activation activities. You will focus on UK submission document collection, site document review, ICF adaptations, and regulatory submission support, coordinating with sites and internal teams to ensure complete, compliant submission packages on time. #J-18808-Ljbffr

We're looking for a freelance designer to own Fortify's visual output across marketing, sales and the website, for around 8 days a month. Several years of freelance or agency work across marketing, collateral and web design. Engagement:Freelance, with potential to become permanent.

I've been tasked to find an External Site Manager for a tier 1 main contractor on a freelance basis. It is to start ASAP and will finish early March 2027. The project is a major development in the Cambridgeshire, it is a crucial groundworks/external package that needs managing. You will be working alongside a Senior Project Manager to deliver the package. • SMSTS, • CSCS, • First Aid at Work, • Knowledge of groundworks, • Attending and contributing in contractor prestart meetings., • Attending and contributing in design team meetings., • Chairing weekly sub-contractor progress meetings, taking and issuing meeting minutes., • Attending safe starts., • Approving RAMS., • Attending DABS and contributing to the meeting, discussing coordination with other trades. If necessary taking the meeting, issuing the DABS report to all other team members., • Enforcing H&S on site., • Identifying potential problems, offering buildability solutions., • Someone who is tech savvy., • Someone who can engage with the supply chain and other team members., • Day rate between £(Apply online only), • Temporary to permanent option, • Opportunity to work with a helpful site team #J-18808-Ljbffr

What if your years of advanced research and deep domain expertise could directly shape the reasoning capabilities of the world's most powerful AI systems? We're looking for Masters and PhD-level researchers to tackle complex, multi-disciplinary problems that push AI to its limits — helping the world's leading AI labs build smarter, more rigorous models. What if your years of advanced research and deep domain expertise could directly shape the reasoning capabilities of the world's most powerful AI systems? We're looking for Masters and PhD-level researchers to tackle complex, multi-disciplinary problems that push AI to its limits — helping the world's leading AI labs build smarter, more rigorous models. This is a fully remote, flexible contract role built for serious researchers. If you've spent years solving hard problems in a STEM or technical field, this is an opportunity to put that expertise to work on something genuinely groundbreaking. • Organization: Alignerr, • Type: Hourly Contract, • Location: Remote, • Commitment: 10–40 hours/week, • Design and solve advanced, multi-disciplinary problems with real-world relevance across your domain of expertise, • Apply your research background to craft complex problem statements that challenge and sharpen AI reasoning, • Review and evaluate AI-generated outputs for academic rigor, accuracy, and depth, • Collaborate asynchronously with AI researchers and domain experts to improve model performance, • Ensure the highest standards of clarity, precision, and intellectual integrity across all deliverables, • Holder of a Master's or PhD in a STEM or highly technical field, • Proven track record in research, publications, or complex technical project management, • Exceptional written communicator — you can explain difficult concepts with precision and clarity, • Naturally detail-oriented with a systematic, rigorous approach to problem-solving, • Self-directed and comfortable working independently in an asynchronous environment, • Based in the U.S., Canada, U.K., Australia, or New Zealand, • Prior experience with data annotation, data quality, or AI evaluation systems, • Proficiency in Python, R, or other research-oriented programming languages, • Familiarity with AI model training or evaluation workflows, • Cross-disciplinary research experience spanning multiple technical domains, • Work directly with the world's leading AI research labs on cutting-edge model development, • Fully remote and flexible — structure your hours around your existing commitments, • Freelance autonomy with the substance of meaningful, high-impact technical work, • Apply your advanced expertise to problems that genuinely matter for the future of AI, • Potential for ongoing work and contract extension as new research projects launch #J-18808-Ljbffr

Carrington West is seeking a freelance Senior Engineer for a civil engineering scheme in Cambridgeshire. You will lead technical and quality aspects, produce quantity take-offs, manage materials and ensure ITPs are prepared and followed. You will mentor site engineers, oversee setting out and quality control, and coordinate with the Agent, commercial team and subcontractors to deliver works to specification and maintain quality records. #J-18808-Ljbffr

Energy Jobline ZR is seeking an External Site Manager for a tier 1 main contractor on a freelance basis in Cambridgeshire. Start ASAP, project focuses on groundworks and external package; you’ll work alongside a Senior Project Manager to deliver the package. You will lead site activities, attend prestart and design team meetings, chair weekly sub-contractor progress meetings, approve RAMS, enforce H&S, coordinate with supply chain, and bring a tech-savvy approach. #J-18808-Ljbffr

Fawkes & Reece London is seeking an External Site Manager for a major groundworks package in Cambridgeshire. The freelance start is immediate, working with a Senior Project Manager to deliver the external scope on a Tier 1 main contractor project. Responsibilities include leading prestart meetings, design-team collaboration, and chairing sub-contractor progress meetings with RAMS and safety on site. A tech-savvy communicator will manage the supply chain and trade coordination. #J-18808-Ljbffr

Job: Shopify Developer (Custom Themes).Rate: £150 per day (outside IR35).Start date: Provisionally Monday 2nd June.Our client, a Brighton based Digital agency, are looking for a freelance Shopify Developer to assist them in delivering a customer piece of work to one of their key clients.This will b

Carrington West is seeking a Section Engineer for a major UK infrastructure project on a long-term freelance basis.

CGI UK | Gloucestershire | SC Clearance Required (DV Preferred).At CGI, wefershifted to secure digital services by designing innovative, resilient technology solutions that deliver lasting value for our clients.As a Senior Software Architect, youfll play a pivotal role in defining technical directio

Freelance Data Strategist / Senior Data Strategist.

Carrington West is seeking a freelance Site Engineer for a piling and bridge construction project in Cambridgeshire.

Fawkes & Reece London is seeking an experienced Freelance Site Manager for a secure environment project in Wigan.

At present they are in the market for a Freelance Senior Estimator to support the work winning team on multiple civil engineering project tenders.

These are long term, Freelance / Self-employed roles with exceptional earning potential. This is a remote role for a MRICS or FRICS Building Surveyor on a freelance basis.

Job DescriptionElvet Recruitment are recruiting a Project Manager on behalf of a long-standing civil engineering contractor to help deliver Water schemes across the North East for an initial term of 6 months.The contractor are a key specialist in various sectors including: Highways, Public Realm, St

Building Careers UK is seeking a Senior Forensic Planner / Delay Analyst for freelance engagement in Manchester with hybrid working arrangements.

The freelance role demands hands-on QA/QC leadership across civil, mechanical and electrical works on site.

Carrington West is recruiting for a Site Engineer in Tilbury on a long-term freelance contract on a major UK infrastructure project.

Caval Limited is seeking an experienced Freelance Quantity Surveyor to support civil engineering projects across the UK. The role is long-term freelance, offering hands-on site engagement and potential to help build the commercial team while delivering strong project outcomes.

A long established Corporate Intermediary Firm is seeking a freelance M&A Acquisitions Specialist to work with public and private company boards. The role is flexible and can be part-time as part of a freelance portfolio.

This an opportunity for a Quantity Surveyor to join the team on a freelance basis for a minimum of 10 months. Long term freelance opportunity for a Quantity Surveyor in Hertfordshire.

TSA Surveying Ltd seeks experienced Freelance Building Surveyors to conduct fabric condition surveys across government buildings in Manchester and Greater Manchester.

The role runs freelance from November for approximately one year, reporting to the on-site Senior PM and coordinating internal trades across classrooms, sports halls, and common areas.

Projet : Transformation ERP Cloud unique (Finance, RH, Achats).Date de démarrage : Novembre 2026 (dès attribution du marché).Durée : Temps plein (engagement de 127 jours) jusqu'au 30 avril 2027 – Extension possible jusqu'en déc.Localisation : Hybride – Londres (UK) + déplacements régulier

Commissioning Engineer - Integrated Security Systems (HVDC Converter Stations)Location.Multiple UK Sites (HVDC Converter Stations & National Grid Infrastructure Projects).Our client is seeking an experienced Commissioning Engineer to support the testing, commissioning, and handover of Integrated Sec

Darwin Recruitment seeks an experienced Freelance BMC Helix ITSM consultant to support a global end customer in maintaining and optimising their Helix ITSM platform.

Linear Recruitment Ltd is seeking a Freelance Assistant Site Manager for a housing development in York.

Freelance Building SurveyorLocation: Manchester and Greater Manchester. Engagement: Freelance / Contract. We are looking to speak with experienced Freelance Building Surveyors to support a programme of fabric condition surveys across a portfolio of government buildings in Manchester and Greater Manc

Ganymede Solutions Limited seeks a Freelance Project Quantity Surveyor for an 18-month education project in Hull.

Fawkes & Reece London is assisting a market-leading client in securing a freelance Quantity Surveyor for ongoing works in Hertfordshire.

Exchange Street Executive Search is seeking MRICS or FRICS Building Surveyors for remote freelance work across the UK.

Freelance Student Recruitment Consultant.

CGI UK in Gloucestershire is seeking a Senior Software Architect to define technical direction and modernise complex environments with cloud and on-premises solutions.You will own architectural decisions and drive secure, scalable delivery for critical business outcomes.Join a collaborative team and

Vivid Resourcing Ltd is assisting a local authority in Essex to hire a TechOne Consultant on a freelance basis.

Free-Work is seeking an experienced Commissioning Engineer to support testing, commissioning, and handover of Integrated Security Systems across critical National Grid infrastructure projects, including HVDC converter stations.The role focuses on commissioning complex electronic security systems in

Collective is building the next generation of AI-powered recruitment technology.Their mission is to help professional recruiters find, engage, and hire the right talent faster.France, Belgium, Spain, and the wider EMEA market, and are.The platform integrates a suite of AI agents covering the entire