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11 front end developer jobs found

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United Kingdom front end developer Greater London
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Contract Spy
Jun 18, 2026
Duration not stated
Front-End Developer - AI Trainer at DataAnnotation, London, From £29.61 an hour
Contract Spy London, UK
Join the DataAnnotation team and contribute to developing cutting-edge AI systems, while enjoying the flexibility of remote work and setting your own schedule. We are looking for a proficient Front-End Developer to help advance AI development. As a member of DataAnnotation’s coding team, you’ll be part of a growing community of over 100,000 professionals — including front-end, back-end, full-stack, machine learning, and other engineers — who are driving real-world impact in AI development. Our platform offers an engaging blend of flexibility and challenge: you’ll work closely with state-of the art AI models to take on programming tasks that include creating and solving challenging coding problems, building beautiful apps with rich functionality, and synthesizing insights through data analysis and visualization. Your work directly contributes to refining intelligent systems that learn, adapt, and evolve. Some team members fit this work alongside a full-time role, while...
Contract Spy
Jun 11, 2026
Duration not stated
QA Engineer/Test Lead - MVP Trading Platform at Wagglyn, London Area, £Contractor Rate
Contract Spy London Area, United Kingdom
Role Summary Wagglyn is looking for an experienced QA Engineer / Test Lead to work with the existing engineering team on the testing and release readiness of its MVP trading platform. This is a hands-on contract role for someone who has tested complex financial or real-time systems before. It is not a generic web QA role and not a manual-testing-only role.   Scope The contractor will help define and execute the QA process across the front end, backend services, market data, execution flows, deployment environments and operational readiness. The role involves working with engineering, product and stakeholders to make sure releases are testable, repeatable and safe to promote through UAT and production-like environments. QA here is about proving the system behaves safely when data is live, services reconnect, orders are sent, risk state changes and deployments happen.   Profile ·      Hands-on QA...
Contract Spy
Jun 08, 2026
Duration not stated
Junior Full Stack Java Web Developer at ReachX, London, £Freelance Rate
Contract Spy London, UK
Job Title: Junior Full Stack Java Web Developer (Hybrid Contractor) About ReachX ReachX is at the forefront of the digitalization of financial services and is a leader in the future of work. ReachX services are specifically designed for Institutional Investors, Corporates, and Professional Services Firms. Our tech platform will enable you to access more than 4000 vetted Advisors and connect with more than 500 Institutional Investors active in private markets. Our mission is to make financial services more efficient and generate unique growth opportunities for our Clients, Partners, and Advisors. Examples of our Institutional Investors include Private Equity, VC, and Family offices predominantly based across the UK and Europe, and projects are typically paid on a day rate or through a success or transaction fee. Interim M&A Advisors might also have a background as: Corporate Finance Advisors CFOs and Finance Directors Investment...
Contract Spy
Jun 19, 2026
Duration not stated
London Senior Java Developer London - (Contractors Outside IR35) at Adaptive Financial Consulting, London, £Contract Rate
Contract Spy London, UK
Senior Java Developer London – (Contractors Outside IR35) In London WE ARE: At Adaptive, we are a financial consulting firm that partners with capital, commodity, and digital market participants. We value differentiation through technology. Our experienced teams design and deliver complex front-office technology solutions using our proven accelerators to create long-term competitive advantage. Our clients include the world’s leading investment banks, investment managers, fintech and capital market service providers. With a global reach with offices in London, New York, Barcelona, Manila and Montreal, we have a proven track record of delivering powerful, elegant and intuitive trading technology solutions. We are now looking for Java Developer services on an exciting project! THE SERVICES REQUIRED: A JVM lover who really enjoys working with the latest technologies and design patterns Eager to solve complex technical challenges, especially in...
Contract Spy
Jun 19, 2026
Duration not stated
Freelance Data, AI and Operational Strategy Lead at Next 15 Group plc, London, £Contract Rate
Contract Spy London, UK
Next15 is a group of specialist businesses powered by data and technology, delivering measurable solutions for clients and lasting value for shareholders. We employ over 3000 people across 15 countries. Within our family of 12 consultancies, data and marketing services businesses, we focus on solving our clients' most complex growth challenges. Role overview We are looking for a freelance Data, AI and Operational Strategy lead to join our team in London. This is a short-term contract role to begin with, with the potential to evolve into permanent depending on the ongoing delivery requirements. Reporting into the Chief of Staff and working directly with the Senior Leadership team within Next 15 Group, this role plays a critical role in the execution of our strategy – Data powered growth fit for an AI future. Sitting at the intersection of data, technology, and people, this role blends hands-on data strategies with close collaboration across teams and brand stakeholders....
Contract Spy
Jun 18, 2026
up to 6 Months
Freelance Principal Product Designer at Red Badger, Hybrid/London, £Contract Rate Outside Ir35
Contract Spy Hybrid (London, UK)
Start date Monday, 22nd June Immediate Interviews 3-month initial contract duration (likely to extend) £ day rate OUTSIDE IR35 2 days / week in office working / 3 days per week remote working.   As a Principal Product Designer, you are a discipline expert. You set the benchmark for quality and best practice. You are passionate about what you do and motivate those around you. You are a strong consultant who can foster positive and trusted relationships with our clients. You're comfortable providing end-to-end product design leadership across a multi-team programme, as well as high-value consulting services to shape a client’s digital product strategy or to develop and launch early product initiatives to prove their value to senior stakeholders. You are a people person and, as a trusted advisor, you develop rapport with your team and clients. You are an integral part of the product team at Red Badger and a client-facing...
Contract Spy
Jun 12, 2026
6 Months or more
Senior Market Risk Model Developer at HSBC, London, 6 Months initial, to £900 per day
£800 - £900 per day
Contract Spy London Area, United Kingdom
Senior Market Risk Model Development   Location - Hybrid (3 days in London) Rate - up to circa £900/day Umbrella Contract Length - Initially 6 months   Senior role responsible for the development and analysis of Market Risk (MR) models, with a focus on Equity and FX products. The role supports accurate risk measurement under FRTB IMA and related internal/regulatory requirements, and provides subject matter expertise across pricing and risk computations.   Key responsibilities   ● Develop and re-design MR models (especially for Equity and FX) to support accurate measurement of FRTB IMA and other required risk measures, in line with internal governance and regulatory expectations. ● Interpret regulatory and business requirements and propose modelling approaches that are fit-for-purpose, well-controlled, and defensible under internal and regulatory scrutiny. ● Partner with Risk Transformation and Financial Engineering...
Contract Spy
Jun 12, 2026
Hourly/Freelance
Data, AI and Operational Strategy Lead at Next15, London, £Freelance Rate
Contract Spy London, UK
Freelance Data, AI and Operational Strategy Lead Next15 is a group of specialist businesses powered by data and technology, delivering measurable solutions for clients and lasting value for shareholders. We employ over 3000 people across 15 countries. Within our family of 12 consultancies, data and marketing services businesses, we focus on solving our clients' most complex growth challenges. Role overview We are looking for a freelance Data, AI and Operational Strategy lead to join our team in London. This is a short-term contract role to begin with, with the potential to evolve into permanent depending on the ongoing delivery requirements. Reporting into the Chief of Staff and working directly with the Senior Leadership team within Next 15 Group, this role plays a critical role in the execution of our strategy – Data powered growth fit for an AI future. Sitting at the intersection of data, technology, and people, this role blends hands-on data strategies with...
Contract Spy
Jun 12, 2026
Duration not stated
Senior Java Developer at Adaptive, London, £Contractor Rate (Outside IR35)
Contract Spy London, UK
London Senior Java Developer London - (Contractors Outside IR35) In London WE ARE: At Adaptive, we are a financial consulting firm that partners with capital, commodity, and digital market participants. We value differentiation through technology. Our experienced teams design and deliver complex front-office technology solutions using our proven accelerators to create long-term competitive advantage. Our clients include the world’s leading investment banks, investment managers, fintech and capital market service providers. With a global reach with offices in London, New York, Barcelona, Manila and Montreal, we have a proven track record of delivering powerful, elegant and intuitive trading technology solutions. We are now looking for Java Developer services on an exciting project!   THE SERVICES REQUIRED: A JVM lover who really enjoys working with the latest technologies and design patterns Eager to solve complex technical...
Contract Spy
Jun 09, 2026
up to 6 Months
Principal Product Designer at Red Badger, London/Remote, 3 Months+ (22 June Start), £Contract Rate (Outside IR35)
Contract Spy Hybrid (London, UK)
Start date Monday, 22nd June Immediate Interviews 3-month initial contract duration (likely to extend) £ day rate OUTSIDE IR35 2 days / week in office working / 3 days per week remote working.    As a Principal Product Designer, you are a discipline expert. You set the benchmark for quality and best practice. You are passionate about what you do and motivate those around you. You are a strong consultant who can foster positive and trusted relationships with our clients. You're comfortable providing end-to-end product design leadership across a multi-team programme, as well as high-value consulting services to shape a client’s digital product strategy or to develop and launch early product initiatives to prove their value to senior stakeholders. You are a people person and, as a trusted advisor, you develop rapport with your team and clients. You are an integral part of the product team at Red Badger and a client-facing...
Contract Spy
Jun 05, 2026
Duration not stated
Senior Java Developer at Adaptive, London, £Contractor Rate (Outside IR35)
Contract Spy London, UK
Senior Java Developer London – (Contractors Outside IR35) In London WE ARE: At Adaptive, we are a financial consulting firm that partners with capital, commodity, and digital market participants. We value differentiation through technology. Our experienced teams design and deliver complex front-office technology solutions using our proven accelerators to create long-term competitive advantage. Our clients include the world’s leading investment banks, investment managers, fintech and capital market service providers. With a global reach with offices in London, New York, Barcelona, Manila and Montreal, we have a proven track record of delivering powerful, elegant and intuitive trading technology solutions. We are now looking for Java Developer services on an exciting project!   THE SERVICES REQUIRED: A JVM lover who really enjoys working with the latest technologies and design patterns Eager to solve complex technical...
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