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21 front end developer jobs found

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Duration not stated front end developer Greater London
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Contract Spy
Apr 14, 2026
Duration not stated
Senior React Developer at Synechron, London Area, £Contract Rate
Contract Spy London Area, United Kingdom
Are you a highly experienced front-end engineer passionate about building robust, high-performance systems? Do you want to be part of a global organisation that ensures the stability and efficiency of the world’s financial ecosystem? Synechron is looking for a talented Front-End Lead to spearhead our front-end transformation for post-trade services. This is a unique opportunity to work on cutting-edge technology within a prestigious, systemically important infrastructure provider. As the Lead Front-End Developer, you will be instrumental in rewriting and refactoring existing UI applications like Margin Manager and Collateral Manager using our strategic workspace UI components. You will design and build a unified portal to provide seamless access across various internal systems, ensuring a cohesive look and feel. Your expertise will help champion clean, maintainable code and uphold strict resiliency standards within an AWS environment. You will collaborate closely with...
Contract Spy
Apr 16, 2026
Duration not stated
Full Stack Developer (React, Java, Spring) at Deloitte, London, £Contract Rate
Contract Spy London, UK
Job Title: Full Stack Developer (Java, Spring, React) - contract Location: London Hybrid. Travel to the London office on 3 days a week Duration: 11 months Contract Start Date: ASAP *note client onboarding takes 6 weeks from offer Day Rate: Competitive (Inside IR35)   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role We are looking for an experienced Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This position requires an understanding of...
Contract Spy
Apr 09, 2026
Duration not stated
Full Stack Developer (React, Java, Spring) at Deloitte, London, £Contract Rate
Contract Spy London, UK
Job Title: Full Stack Developer (Java, Spring, React) - contract Location: London Hybrid. Travel to the London office on 3 days a week Duration: 11 months Contract Start Date: ASAP *note client onboarding takes 6 weeks from offer Day Rate: Competitive (Inside IR35)   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role We are looking for an experienced Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This position requires an...
Contract Spy
Apr 08, 2026
Duration not stated
Full Stack Developer at School Prom Car Hire, London, £Contract Rate
Contract Spy London, UK
About School Prom Car Hire School Prom Car Hire is a premium luxury transport and travel platform operating across the UK and internationally. We specialise in limousine hire, yacht charters, private aviation, chauffeur services, airport transfers, and high-end event transport. Our growth strategy is built on technical excellence, search dominance, automation, and scalable digital infrastructure. We are hiring a Senior Full-Stack Web Developer who understands how engineering decisions directly impact SEO performance, scalability, and long-term growth. The Role This position requires a true full-stack engineer — not just a WordPress developer. You will take ownership of our entire digital ecosystem, ensuring it is technically sound, search-optimised, secure, automated, and built for algorithm resilience. What You’ll Be Responsible For Full-Stack Development Front-end and back-end development Building scalable web applications...
Contract Spy
Apr 02, 2026
Duration not stated
.Net Developer at P92 Group UK Limited, London EC2A, £450-£750 per day
£450 - £750 per day
Contract Spy London EC2A, UK
Job Overview We are currently seeking a .NET Developer for a contractor role based in our UK office. The .NET Developer will be designing, developing, and testing software applications. Additionally, they will maintain existing codebases, troubleshoot issues, and collaborate with cross-functional teams. P92 has been appointed as an External Software Development Partner. The ideal candidate will have a strong technical background, with expertise in modern .Net stack, and possess a systems-thinking approach to understand the entire process comprehensively. The ideal candidate will be an experienced .Net contractor that is able to switch context quickly and hit the ground running. We expect a positive attitude, along with a high level of commitment and responsibility, to be agile and dedicated to high quality work. Education BSc / MSc degree in Computer Science, Information Engineering or a related subject or equivalent experience Experiences Minimum 3-5...
Contract Spy
Mar 31, 2026
Duration not stated
Senior Software/Data Engineer at Softwire, Remote/London, £500-£585 per day (Outside IR35)
£500 - £585 per day
Contract Spy Remote (London, UK)
Senior Software Developer / Data Engineer - (Contract Outside IR35)   In brief   We’re looking for well-rounded software developers with experience in data engineering, with a proven ability to tackle complex data challenges, make an excellent impression on clients, and have a high impact on the output of your entire team. We provide a supportive environment with a strong focus on individual career progression, where you will have both the mentorship and project opportunities you need to develop your technical skills. You’ll work in a team alongside other talented developers and data engineers, supported by a Technical Lead. Projects span a range of sizes and multiple sectors and technologies.   The role   Experience and qualifications   You have 4+ years’ experience and a breadth & depth of technical knowledge & expertise, particularly in data engineering, and can solve technical...
Contract Spy
Mar 30, 2026
Duration not stated
Full Stack Developer at School Prom Car Hire, London, £Contract Rate
Contract Spy London, UK
About School Prom Car Hire School Prom Car Hire is a premium luxury transport and travel platform operating across the UK and internationally. We specialise in limousine hire, yacht charters, private aviation, chauffeur services, airport transfers, and high-end event transport. Our growth strategy is built on technical excellence, search dominance, automation, and scalable digital infrastructure. We are hiring a Senior Full-Stack Web Developer who understands how engineering decisions directly impact SEO performance, scalability, and long-term growth. The Role This position requires a true full-stack engineer — not just a WordPress developer. You will take ownership of our entire digital ecosystem, ensuring it is technically sound, search-optimised, secure, automated, and built for algorithm resilience. What You’ll Be Responsible For Full-Stack Development Front-end and back-end development Building scalable web applications...
Contract Spy
Mar 26, 2026
Duration not stated
Java Full-Stack Lead Developer at Synechron, London, £Contract Rate
Contract Spy London, UK
About Synechron: Synechron is a leading digital transformation consulting firm dedicated to delivering innovative technology solutions within banking, financial services, and insurance. We thrive on engineering excellence, collaboration, and a passion for cutting-edge technologies. Job Location: London (Hybrid - 3 days in the office) About the role: We are seeking a highly experienced (10+ years ) Java Full-Stack Lead Developer with strong system architecture expertise to lead the design and delivery of scalable, distributed systems. This is a hands-on leadership role where you will define architecture, guide a globally distributed engineering team, and ensure high standards in both Back End and Front End development. Key Responsibilities Lead the architecture design of complex, scalable and high-availability systems Make critical decisions on system design, tech stack, and trade-offs Drive end-to-end development across Back End and Front End...
Contract Spy
Mar 25, 2026
Duration not stated
Java Back-End Developer with Azure/AWS at ERP Tech Solutions Ltd, London, £300 per day (Outside IR35)
£300 per day
Contract Spy London, UK
Job Summary We are seeking an experienced Java Back-end Developer specialised in cloud platforms such as Azure and AWS to join our dynamic development team. The successful candidate will be responsible for designing, developing, and maintaining scalable back-end services and APIs, ensuring seamless integration with front-end applications and third-party systems. This role offers an exciting opportunity to work on innovative projects within a collaborative environment, contributing to the realisation of cutting-edge solutions that meet business needs. Responsibilities Liaise with fellow developers Designing and implementing microservices which use the spring boot framework. Working in compliance with the full Software Development Life Cycle. Connecting microservices to interact with databases. Understanding of how streaming technologies work such as Kafka. Build Azure/AWS pipelines Identifying and finding solutions to bugs. Ensure you've...
Contract Spy
Mar 24, 2026
Duration not stated
Junior Full Stack Java Web Developer at ReachX, London, £Contractor 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 Banking...
Contract Spy
Mar 23, 2026
Duration not stated
Full Stack Developer at School Prom Car Hire, London, £Contract Rate
Contract Spy London, UK
About School Prom Car Hire School Prom Car Hire is a premium luxury transport and travel platform operating across the UK and internationally. We specialise in limousine hire, yacht charters, private aviation, chauffeur services, airport transfers, and high-end event transport. Our growth strategy is built on technical excellence, search dominance, automation, and scalable digital infrastructure. We are hiring a Senior Full-Stack Web Developer who understands how engineering decisions directly impact SEO performance, scalability, and long-term growth. The Role This position requires a true full-stack engineer — not just a WordPress developer. You will take ownership of our entire digital ecosystem, ensuring it is technically sound, search-optimised, secure, automated, and built for algorithm resilience. What You’ll Be Responsible For Full-Stack Development Front-end and back-end development Building scalable web applications...
Contract Spy
Apr 17, 2026
Duration not stated
Swaps Developer - C++, Java etc at Jefferies, London Area, £Contract Rate
Contract Spy London Area, United Kingdom
Role An opportunity exists for a technically oriented individual to join the Equity technology team in London. The role will focus on developing & maintaining our Equity Swaps platform – supporting front and middle office users in multiple time zones. The successful candidate will collaborate with business partners, analysts and stakeholders across the organisation to deliver the strategic book of work alongside supporting the day-to-day operations. Key Responsibilities Provide leadership as required to ensure successful delivery of a project. Owning specific projects or issues from start to finish. Documenting. Working with global colleagues, stakeholders and management to ensure appropriate prioritisation. Write high quality code, unit testing, working with QA, and overseeing the production release cycle. Trade support queries (2nd line)   Person Specification The following skills and experience are required...
Contract Spy
Apr 15, 2026
Duration not stated
Python Platform Engineer at G-Research, London Area, £Contract Rate
Contract Spy London Area, United Kingdom
We tackle the most complex problems in quantitative finance, by bringing scientific clarity to financial complexity.   From our London HQ, we unite world-class researchers and engineers in an environment that values deep exploration and methodical execution - because the best ideas take time to evolve. Together we’re building a world-class platform to amplify our teams’ most powerful ideas.   As part of our engineering team, you’ll shape the platforms and tools that drive high-impact research - designing systems that scale, accelerate discovery and support innovation across the firm.   Take the next step in your career.   The role   The Storage Engineering team manages hundreds of petabytes across VAST, PowerScale, ECS, Rubrik, Alletra, Pure and a custom Tier Zero platform. The current operational tooling is a patchwork of GitOps workflows and Jenkins pipelines. We're replacing it with a custom-built...
Contract Spy
Apr 13, 2026
Duration not stated
API/Integration Architect at DADA Enterprises Ltd., London, £425-£475 per day
£425 - £475 per day
Contract Spy London, UK
Job Overview We are seeking a highly skilled API / Integration Architect to lead the design, development, and implementation of complex integration solutions across diverse platforms and systems. The successful candidate will play a pivotal role in shaping our cloud architecture and ensuring seamless connectivity between various enterprise applications. This role offers an exciting opportunity to work on cutting-edge technologies, including microservices, cloud computing, and DevOps practices, within a dynamic and innovative environment. What you’ll be doing: Assessing existing systems and defining API-led integration strategy Data formats, interoperability, authentication and security Designing target integration architecture Supporting data and technical feasibility assessments Identifying opportunities for Automation Contributing to discovery outputs and recommendations Lead the architecture and design of scalable, secure,...
Contract Spy
Apr 10, 2026
Duration not stated
Technical Business Analyst at Emagine Consulting, London, £700-£750 per day
£700 - £750 per day
Contract Spy London, UK
As a Technical Business Analyst, you will work with various business partners (Front Office Traders, Market Risk Managers, Business Supervision Officers, Finance and Trade Control) on business analysis, project management, and front to back support, from Trade Capture to Product Risk valuation support. Technical Business Analyst- (Market Risk/FICC) London (Hybrid) x3 Days on-site £700- £750 emagine is a high-end professional services consultancy and solutions firm Specialising in providing business and technology services to the financial services sector, we power progress, solve challenges and deliver real results through tailored high-end consulting services and solutions. We have created a culture of openness and integrity by building genuine and strong relationships and partnerships, enabling us to be uncompromising in our dedication in delivering the optimal service for our clients. Our commitment is not just towards our clients but we aim to foster...
Contract Spy
Apr 09, 2026
Duration not stated
Lead WPF/C# Developer at Solytics Partners, London Area, £Contract Rate
Contract Spy London Area, United Kingdom
About us: Solytics Partners provides Consulting and Solutions to Banking, Capital Markets, Asset Management, and Insurance firms. We leverage a combination of deep domain knowledge, advanced analytics and technology to provide accelerated and efficient services and next generation solutions. Our team of senior consultants comes with significant global experience in key markets and advanced degrees in STEM. Our regulatory compliant solutions and services enable leading financial institutions and corporations to create and sustain competitive advantage.   Job Summary: We are seeking a skilled WPF Expert with a deep understanding of UI performance optimization and troubleshooting in high-performance environments. The ideal candidate will have hands-on experience in analyzing, profiling, and resolving performance bottlenecks in complex WPF applications.   Responsibilities: Analyze and resolve performance issues in WPF-based user interfaces....
Contract Spy
Apr 01, 2026
Duration not stated
Python Platform Engineer at G-Reserach, London, £Contract Rate
Contract Spy London, UK
Python Platform Engineer (Contract) We tackle the most complex problems in quantitative finance, by bringing scientific clarity to financial complexity.   From our London HQ, we unite world-class researchers and engineers in an environment that values deep exploration and methodical execution - because the best ideas take time to evolve.  Together we’re building a world-class platform to amplify our teams’ most powerful ideas.   As part of our engineering team, you’ll shape the platforms and tools that drive high-impact research - designing systems that scale, accelerate discovery and support innovation across the firm.   Take the next step in your career.   The role The Storage Engineering team manages hundreds of petabytes across VAST, PowerScale, ECS, Rubrik, Alletra, Pure and a custom Tier Zero platform. The current operational tooling is a patchwork of GitOps workflows and Jenkins pipelines. We're...
Contract Spy
Apr 01, 2026
Duration not stated
Business Analyst - Trading Operations at Emagine, London, £500-£550 per day
£500 - £550 per day
Contract Spy London, UK
Experienced Business Analyst to support and on-going programme with the setup of a new European capital markets entity. This role will be focused on end-to-end operational analysis, process design, and supporting the development of a scalable target operating model across multiple jurisdictions. Business Analyst - Trading Operations & Regulatory Change London- (Hybrid) X3 days on-site per week £500- £550 emagine is a high-end professional services consultancy and solutions firm Specialising in providing business and technology services to the financial services sector, we power progress, solve challenges and deliver real results through tailored high-end consulting services and solutions. We have created a culture of openness and integrity by building genuine and strong relationships and partnerships, enabling us to be uncompromising in our dedication in delivering the optimal service for our clients. Our commitment is not just towards our clients...
Contract Spy
Mar 26, 2026
Duration not stated
Senior Business Analyst at SEFE Marketing & Trading Ltd, London, £Contractor Rate
Contract Spy London, England, United Kingdom
IN SHORT We’re looking for a Business Analyst to join our IT team supporting a front‑office derivatives trading desk. In this business‑facing role, you’ll work directly with traders and senior stakeholders—up to C‑suite level—to analyse requirements, shape technical solutions, and support frequent, high‑quality releases. You’ll join a trusted, high‑performing team that delivers change continuously and plays a key role in enabling revenue through robust analytic tooling. What Will You Do Work with derivatives traders and IT to define requirements, propose solutions, broker decisions, and drive consensus. Collaborate with developers to deliver enhancements and support UAT. Provide third‑line support to traders and help resolve complex issues. Partner closely with front office teams to ensure technology solutions maximise business value and align with trading needs. Analyse processes, identify improvements, and recommend...
Contract Spy
Mar 25, 2026
Duration not stated
Software Developer - Front Office Trading Technology at GreySpark Partners, London, £500-£900 per day
£500 - £900 per day
Contract Spy London, UK
GreySpark Partners is a specialist consultancy that helps capital markets firms transform how they operate, compete and innovate. We combine deep industry expertise with hands-on delivery to solve complex business, technology and regulatory challenges for investment banks, asset and wealth managers, fintechs and other financial institutions, with a strong focus on front-office trading technology and solutions. GreySpark is expanding its Technology talent pool and is seeking experienced Software Developers interested in working on complex, business-critical trading platforms within global investment banks and financial markets clients. This is an opportunity to contribute to the design and optimisation of real-time systems across pricing, risk, connectivity and execution workflows. What You'll Do As a GreySpark technology consultant, you will work closely with front-office and technology teams to deliver both review and delivery projects. Responsibilities include:...
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