67 independent contractor jobs found

pubGENIUS is a React.js and Next.js development agency and ad-tech startup. We build websites and apps for clients across the US and Europe, specializing in decentralized finance (DeFi, crypto, NFT, blockchain), fintech, and healthcare, with occasional work in e-commerce and other verticals. Beyond client work, we operate our own high-revenue web product with a website, mobile app, and machine learning systems powering our ad-tech optimization engine. Performance is not a preference here, it is a core requirement.   We are looking for a Principal Software Engineer, who will be the technical authority, responsible for all development, architecture decisions, and long-term technical strategy across a website, mobile app, and ML-powered ad-tech optimization systems. This is a full-time independent contractor engagement. You will work hands-on at a senior level where site speed and server performance are core success metrics. You will work directly with...

Blackstone& are a technical consultancy who specialise in digital transformation and complex technical deliveries. 15 years ago that meant Cloud adoption. 10 years ago it was DevOps. 5 years ago, SRE and platform engineering. We still cover all of that, but right now a significant part of our work is AI adoption. And we mean actual AI adoption: in production, in Enterprises. Not just a vibe coded app on a local machine.   The pace and impact of each wave keeps accelerating, but we think successful adoption still comes down to two things: people and constraints. What does transformation actually look like inside the limits of an organisation, and how do we bring the people along for it?   This Delivery Manager role sits right at the heart of that question. You will be joining a small, high-performing Blackstone& team embedded in a large-scale AI adoption programme, responsible for making sure the right things get delivered, in the right way, at the...

pubGENIUS is a React.js and Next.js development agency and ad-tech startup. We build websites and apps for clients across the US and Europe, specializing in decentralized finance (DeFi, crypto, NFT, blockchain), fintech, and healthcare, with occasional work in e-commerce and other verticals. Beyond client work, we operate our own high-revenue web product with a website, mobile app, and machine learning systems powering our ad-tech optimization engine. Performance is not a preference here, it is a core requirement.   We are looking for a Principal Software Engineer, who will be the technical authority, responsible for all development, architecture decisions, and long-term technical strategy across a website, mobile app, and ML-powered ad-tech optimization systems. This is a full-time independent contractor engagement. You will work hands-on at a senior level where site speed and server performance are core success metrics. You will work directly with...

Blackstone& are a technical consultancy who specialise in digital transformation and complex technical deliveries. 15 years ago that meant Cloud adoption. 10 years ago it was DevOps. 5 years ago, SRE and platform engineering. We still cover all of that, but you guessed it, a lot of our work right now is AI adoption. And we mean actual AI adoption: in production, in Enterprises. Not just a vibe coded app on a local machine.   The pace and impact of each wave keeps accelerating, but we think successful adoption still comes down to two things: people and constraints. What does transformation actually look like inside the limits of an organisation, and how do we bring the people along for it?   Interested in helping us answer those questions for our customers?   WHAT YOU'LL BRING Core Skills Solid back-end engineering foundations. You write code that others can read, test, and build on Hands-on experience with AWS Bedrock,...

pubGENIUS is a React.js and Next.js development agency and ad-tech startup. We build websites and apps for clients across the US and Europe, specializing in decentralized finance (DeFi, crypto, NFT, blockchain), fintech, and healthcare, with occasional work in e-commerce and other verticals. Beyond client work, we operate our own high-revenue web product with a website, mobile app, and machine learning systems powering our ad-tech optimization engine. Performance is not a preference here, it is a core requirement.   We are looking for a Principal Software Engineer, who will be the technical authority, responsible for all development, architecture decisions, and long-term technical strategy across a website, mobile app, and ML-powered ad-tech optimization systems. This is a full-time independent contractor engagement. You will work hands-on at a senior level where site speed and server performance are core success metrics. You will work directly with...

Project Overview Cambridge Spark is seeking an independent, high-calibre AI Transformation Delivery Consultant (Project Basis) to deliver strategic advisory and technical scoping services for our executive-level clients. This is a project-based contract engagement to deliver projects as part of our executive education programmes. The successful consultant will act as an external specialist, bridging the gap between technical capability and business value by leading defined workstreams within our Leading with AI programme. The project is remote / UK-based (with project-specific onsite delivery in London, Cambridge and client sites as required). Key Deliverables & Scope of Work The consultant will be responsible for delivering the following outcomes: Executive Advisory & Value Discovery: Deliver strategic consulting to client executives, identifying and documenting high-impact opportunities where AI can drive operational efficiency or new business models....

Who Are We? Xcelirate develops technologically-advanced platforms which are accessed by thousands of users every minute! We are proud to offer a workplace where the sharpest developers come together to strategically plan and swiftly execute practices which see us maintain our existing market dominance and attain global expansion. We owe our success to our customers who have seen us grow across a decade, and our talented team who have made that growth possible!   What are we looking for? You're a Principal-Level Engineer first. The tech lead title is almost incidental. It just means you're the person the team orbits around, because that's what happens naturally when you're the one who understands the system most deeply and keeps the clearest head under pressure. The 10% that's people management fits inside your engineering work, not alongside it. You hire, you steer, you unblock, but you do it the way a strong engineer does everything: with good...

Senior UX Researcher – Contract (outside IR35)   We need a Contractor to join us as a UX Researcher to support a global strategic project with a focus on mixed quantitative and qualitative research methods, particularly strong quantitative skills.   Here's the experience we expect you to possess:   6+ years of user research experience with direct, hands-on experience in both qualitative and quantitative methods Demonstrated experience in designing and leading large-scale quantitative surveys across large samples Hands-on experience with information architecture methods, including tree testing and card sorting Strong experience with moderated and unmoderated usability testing in an Agile delivery environment Deep familiarity with UX metrics and benchmarking, including SUS, task completion rate, SEQ and related usability and performance measures Ability to synthesise quantitative and qualitative findings into clear,...

Contract: Initial paid technical audit, followed by 2 days per week for 3 months Location: Remote (UK-based candidates only, UK timezone required) Start date: ASAP Day rate: Please provide your expected UK contractor day rate We are seeking a Fractional Senior Full-Stack Engineer / Technical Lead to help prepare an established UK-facing B2B SaaS platform for commercial launch. The product is already substantially built and is not a greenfield project. The immediate focus is to understand the existing codebase, assess production readiness, identify critical risks, and support the final hardening, testing, and stabilisation of the platform ahead of launch. This role is suited to a senior UK-based contractor comfortable working within large existing systems, navigating unfamiliar codebases, and making pragmatic, high-impact technical decisions under time pressure. Engagement Structure The engagement will begin with a short, paid technical audit. The audit will assess:...

Who Are We? Xcelirate develops technologically-advanced platforms which are accessed by thousands of users every minute! We are proud to offer a workplace where the sharpest developers come together to strategically plan and swiftly execute practices which see us maintain our existing market dominance and attain global expansion. We owe our success to our customers who have seen us grow across a decade, and our talented team who have made that growth possible!   What are we looking for? You're a Principal-Level Engineer first. The tech lead title is almost incidental. It just means you're the person the team orbits around, because that's what happens naturally when you're the one who understands the system most deeply and keeps the clearest head under pressure. The 10% that's people management fits inside your engineering work, not alongside it. You hire, you steer, you unblock, but you do it the way a strong engineer does everything: with good...

Senior UX Researcher - Contract Senior UX Researcher – Contract (outside IR35)   We need a Contractor to join us as a UX Researcher to support a global strategic project with a focus on mixed quantitative and qualitative research methods, particularly strong quantitative skills.   Here's the experience we expect you to possess:   -              6+ years of user research experience with direct, hands-on experience in both qualitative and quantitative methods -              Demonstrated experience in designing and leading large-scale quantitative surveys across large samples -              Hands-on experience with information architecture methods, including tree testing and card sorting...

Contract: Initial paid technical audit, followed by 2 days per week for 3 months Location: Remote (UK-based candidates only, UK timezone required) Start date: ASAP Day rate: Please provide your expected UK contractor day rate We are seeking a Fractional Senior Full-Stack Engineer / Technical Lead to help prepare an established UK-facing B2B SaaS platform for commercial launch. The product is already substantially built and is not a greenfield project. The immediate focus is to understand the existing codebase, assess production readiness, identify critical risks, and support the final hardening, testing, and stabilisation of the platform ahead of launch. This role is suited to a senior UK-based contractor comfortable working within large existing systems, navigating unfamiliar codebases, and making pragmatic, high-impact technical decisions under time pressure. Engagement Structure The engagement will begin with a short, paid technical audit. The audit will assess:...

Who Are We? Xcelirate develops technologically-advanced platforms which are accessed by thousands of users every minute! We are proud to offer a workplace where the sharpest developers come together to strategically plan and swiftly execute practices which see us maintain our existing market dominance and attain global expansion. We owe our success to our customers who have seen us grow across a decade, and our talented team who have made that growth possible!   What are we looking for? You're a Principal-Level Engineer first. The tech lead title is almost incidental. It just means you're the person the team orbits around, because that's what happens naturally when you're the one who understands the system most deeply and keeps the clearest head under pressure. The 10% that's people management fits inside your engineering work, not alongside it. You hire, you steer, you unblock, but you do it the way a strong engineer does everything: with good...

Technology & Digital Skills Tutor Job Description and Person Specification Job Title: Technology & Digital Skills Tutor Place of Work: Orchard Therapeutic Farm Alternative Provision Hours of Work: Tuesday and Fridays 8:30 – 16:30, Term time only + inset days + Plus delivery of holiday camps (4/5 weeks per year) (Opportunities to deliver holiday programmes, including summer provision) Day Rate: £160 – £190 depending on experience Reports to: Head of Centre Level of Screening: Enhanced DBS Who We Are OTF is an award-winning primary, secondary and post-16 alternative provision. We are a farm-based setting supporting young people with social, emotional and mental health (SEMH) needs. Many of the young people we support have additional special educational needs, including neurodivergence. All placements are commissioned by schools and local authorities, and learners have an...

The Role :  We are looking for an experienced Product Owner with a strong background in banking or financial services to join a high-growth digital platform team. You will own end-to-end product delivery across one or more cross-functional squads, working on customer-facing features and core financial platform capabilities in a fast-paced, outcome-driven environment. This is a hands-on, accountable role. You bring deep domain knowledge from day one, operate independently without hand-holding, and are equally comfortable in a sprint ceremony as you are presenting to senior stakeholders.   What You Will Do Delivery Own and continuously refine a prioritised, DoR-compliant product backlog aligned to roadmap OKRs Author high-quality user stories, acceptance criteria, and sprint artefacts that enable engineering teams to deliver without further clarification Participate actively in sprint planning, reviews, retrospectives, and PI Planning as the...

£400 – £450 Inside IR35 City Coventry Province Greater London Country United Kingdom Postal Code EC1A Job Description About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning UK public sector digital consultancy, positively influencing the lives of over forty million UK citizens. We bring deep expertise in agile delivery, digital transformation, and platform engineering across central government. With a team of over one hundred and twenty-five professionals — more than forty percent of whom are women — we are committed to building inclusive, diverse teams that reflect the communities we serve.   Role Overview A senior hands-on development role within a fast-paced digital delivery programme, specialising in Microsoft Dynamics 365 and Power Platform. You will build, configure, and extend D365 solutions while working closely with...

This role is delivered within secure environments. Candidates must be eligible for UK SC clearance and hold UK citizenship. Join the Mission At ByDesign Secure, we believe that world‑class security shouldn't be an afterthought— it should be the foundation. We are an independent, outputs‑based consultancy dedicated to solving the most complex data assurance challenges in the UK public sector. Currently, we are working on a landmark transformation of a cross‑government secure IT system. This is an exciting opportunity to contribute to the design and consumption of a private cloud environment from the ground up and help modernise the end‑user services that support national decision‑making. We don’t believe in “billing by the hour” or rigid hierarchies; we are a lean, expert team focused on delivering high‑impact outcomes. If you are a self‑starter who thrives on autonomy and wants to see your analysis, insights, and business decisions shape the...

This role is delivered within secure environments. Candidates must be eligible for UK SC clearance and hold UK citizenship. Join the Mission At ByDesign Secure, we believe that world‑class security shouldn't be an afterthought— it should be the foundation. We are an independent, outputs‑based consultancy dedicated to solving the most complex data assurance challenges in the UK public sector. Currently, we are working on a landmark transformation of a cross‑government secure IT system. This is an exciting opportunity to contribute to the design and consumption of a private cloud environment from the ground up and help modernise the end‑user services that support national decision‑making. We don’t believe in “billing by the hour” or rigid hierarchies; we are a lean, expert team focused on delivering high‑impact outcomes. If you are a self‑starter who thrives on autonomy and wants to see your analysis, insights, and business decisions shape the...

The Role Are you a senior backend engineer who thrives on distributed systems, clean architecture, and complex data problems? At ONYX Insight, we're looking for a Senior Software Developer (Contractor) to make an immediate impact on our core platform, a sophisticated distributed system processing data from wind turbines around the world. This is not a typical SaaS CRUD role. You'll work across a distributed architecture including asynchronous messaging, worker processes, and data ingestion pipelines. Frontend exposure is a bonus, not a requirement. Key Responsibilities: Backend Delivery: Implement robust, well-tested C# .NET services following clean architecture principles — domain logic, data access, messaging, and background processing. Distributed Systems: Contribute to service boundary design, asynchronous messaging flows, and worker processes within our modular monolith, with an eye on future decomposition. Data Pipelines: Build and...

Role Overview We are looking for subject matter experts who are Freelance or Associate Trainer and will deliver all IT Infrastructure Track modules in a live or in-person format. Working with high-potential banking and financial professionals, the Trainer is responsible for facilitating technical instruction, guiding virtual lab exercises, assessing participant progress, and supporting learners through action learning projects and a final programme Hackathon. This role demands both deep technical expertise and the ability to connect complex infrastructure concepts to a regulated financial services environment. The Trainer is not simply a subject matter expert — they are a programme ambassador, expected to reflect the quality and rigour the client organisation demands from a premium training partnership. The training can take place in the GCC regions.   Key Responsibilities • Deliver IT Infrastructure Track modules at a high instructional standard,...