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20 java developer jobs found

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java developer Greater London
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Contract Spy
Dec 12, 2025
6 Months or more
Java Developer at Handelsbanken, London, 6 Months, £Day Rate
Contract Spy London, England, United Kingdom
Job Introduction Main Responsibilities As a Java Developer (6M day rate contract) you will be joining the IT team responsible for the delivery, support and maintenance of Handelsbanken PLC’s Core Banking systems encompassing Platforming, Risk, Payments, Lending and Customer Data. As a Java Developer you will be providing expertise in the full software development life cycle. Key Responsibilities Use your initiative to work with Senior Java Development, UI/UX Development and Agile Transformation to help shape, architect and deliver greenfield/brownfield/integration applications employing best design and development practice Positively effective at systems analysis, solving technical problems and development excellence given the constraints of the Bank’s environment Follow cross-functional development best practice, including but not restricted to, Functional and Non-Functional Analysis, Application Architecture, Design, Coding and Unit Testing,...
Contract Spy
Dec 11, 2025
Duration not stated
Senior Java Developer at Adaptive Financial Consulting, London, £Contract Rate (Outside IR35)
Contract Spy London, UK
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 cloud-based environments and event driven architecture patterns Experienced...
Contract Spy
Dec 04, 2025
Duration not stated
Senior Java Developer at Adaptive Financial Consulting, London, £Contract Rate (Outside IR35)
Contract Spy London, UK
Senior Java Developer - London (Contract Outside IR35) 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 cloud-based environments...
Contract Spy
Nov 28, 2025
6 Months or more
Lead Java Developer - Fixed Income at Fentexa, London/Remote, 12 Months, £Good Day Rates
Contract Spy London Area, United Kingdom
Role Lead Java Developer Fixed Income Position Contract 12 months extendable Location London Hybrid Rates Good Day Rates   Job Description: We are seeking a talented Senior hands-on Java Developer to join our core Fixed Income team in a lead role. In this role you will help design, develop, and implement our applications to support front office and operations groups. You will work cross-functionally with various stakeholders, trading teams, and technology departments to ensure our applications are running at optimal performance. You will take a hands-on approach to understanding business workflows and the products we work with. You will help re-engineer and modernize our platform and drive our migration to a scalable microservice, cloud-based architecture.   Responsibilities: As a development lead, will be responsible to Build, design, Trading Channels, Messaging Channels interfacing with other venues an exchanges using industry...
Contract Spy
Nov 28, 2025
Duration not stated
Senior Java Developer at Waracle, London, £Contract Rate (Outside IR35)
Contract Spy London, UK
Waracle is a world-class digital technology consultancy and home to a diverse, smart, curious and ambitious community of specialists in technology-driven transformation.   We work with ambitious clients to help them solve their biggest business and customer challenges. We help our clients to innovate and create intelligent digital products and services. We thrive on complex challenges and deliver business-critical IT transformation projects, moving seamlessly from strategy, design and delivery to operations. Waracle are looking for a Senior Backend Java Developer with hands on experience in AI implementation to join our growing team. This role is available on a permanent or contract (Outside IR35) basis and will be based hybrid from our London office.   As a Senior Backend Developer, you will be a key technical leader, responsible for the end-to-end design, delivery, and optimisation of our clients' most critical backend systems. This role requires not...
Contract Spy
Dec 08, 2025
6 Months or more
Sr. Java Developer - Front Office Applications at Solytics Partners, London Area, 6-12 Months, £Contract Rate
Contract Spy London Area, United Kingdom
About Us:   Solytics Partners provide products and services to BFSI and Healthcare firms. We use AI/ML& cutting-edge technology to develop next generation solutions or provide efficient services. We have strong team of PHDs in AI/ML and experts in BFSI, and healthcare industry. Our regulatory compliant solutions and services enable leading corporations and institutions to create and sustain competitive advantage.   Experience Required: 8+ Years Contract Type: Inside IR35 Duration: 6 months to 12 months (possibility of extension)   Job Overview:   We are looking for a Java Engineer to join a high-performing team building low-latency, mission-critical applications. This is a contract role offering the opportunity to work on real-time, high-throughput systems within a fast-paced and innovative trading environment. The ideal candidate will be an expert in reactive Java programming , multithreading, and...
Contract Spy
Dec 16, 2025
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
Dec 09, 2025
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
Dec 02, 2025
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
Dec 15, 2025
Hourly/Freelance
Android Developer for Digital Asset Marketplace App at Fliprly, London, £Freelance Rate
Contract Spy London, UK
About Fliprly Fliprly is the world’s first and only mobile app dedicated to buying and selling domains, websites, mobile apps, and other digital assets. Our iOS app and web platform are live, and we’re now ready to expand our reach with a robust Android app. Join us on this exciting journey to revolutionize the digital asset marketplace! What We’re Looking For We’re seeking a skilled Android Developer (freelancer or agency) to build the Android version of Fliprly from scratch. You’ll work closely with our existing team and leverage our iOS/web apps as references for functionality and design consistency. Responsibilities Build a high-performance Android app using Java. Translate our iOS design and features into the Android ecosystem. Integrate APIs and backend services (already available). Ensure a smooth, responsive, and bug-free user experience. Requirements Proven experience building Android apps...
Contract Spy
Dec 11, 2025
Duration not stated
Senior OIC Developer at Nexify Infosystems, London Area, £Contract Rate
Contract Spy London Area, United Kingdom
Role: Sr OIC Developer Location: London, UK ( Needed locals) Contract: Long-term Contract   Skills: • OIC VBCS platform expertise • Java – Expert level • JavaScript – Expert Level • TRADACOM, EDIFACT, X12 – Expert • Experience with EDI Integrations on OIC is an Essential skill • Experience with SFTP and AS2 based EDI   OIC Engineer • Analyse systems integrations and creates systems and software architecture that keep enterprise data secure and compliant. • Uses standards and best practices to create architectural designs and diagrams • Interfaces with clients and business partners to understand the overall needs • Create Integration processes using OIC technologies • Build reusable code. Build efficiently upon the existing data model and quickly change gears as priorities change • Maintain high service levels for clients, always...
Contract Spy
Dec 09, 2025
up to 6 Months
Full Stack Engineer - SC Cleared at Ministry of Justice, Remote, 3 Months, £Contract Rate
Contract Spy Remote (London, UK)
SC Clearance is an essential requirement for this role, as a minimum you must be willing & eligible to undergo checks. Please note, due to the exceptional requirements of this position (short-term nature of this role and speed at which we require a postholder in situ) preference may be given to candidates who meet all of the essential criteria and hold active security clearance.   The Ministry of Justice (MoJ) priorities include improving public safety and reducing reoffending by reforming prisons, probation and youth justice, and building a justice system which makes access to justice swifter and more certain for all citizens whatever their background. Project professionals in the MoJ help to improve the government's ability to protect the public and reduce reoffending, and to provide a more effective, transparent and responsive criminal justice system for victims and the public.   As a  Full Stack Engineer , your main responsibilities will be:...
Contract Spy
Dec 08, 2025
Hourly/Freelance
Android Developer for Digital Asset Marketplace App at Fliprly, London, £Freelance Rate
Contract Spy London, UK
About Fliprly Fliprly is the world’s first and only mobile app dedicated to buying and selling domains, websites, mobile apps, and other digital assets. Our iOS app and web platform are live, and we’re now ready to expand our reach with a robust Android app. Join us on this exciting journey to revolutionize the digital asset marketplace! What We’re Looking For We’re seeking a skilled Android Developer (freelancer or agency) to build the Android version of Fliprly from scratch. You’ll work closely with our existing team and leverage our iOS/web apps as references for functionality and design consistency. Responsibilities Build a high-performance Android app using Java. Translate our iOS design and features into the Android ecosystem. Integrate APIs and backend services (already available). Ensure a smooth, responsive, and bug-free user experience. Requirements Proven experience building Android apps...
Contract Spy
Dec 01, 2025
Duration not stated
Android Developer for Digital Asset Marketplace App at Fliprly, London, £Freelance Rate
Contract Spy London, UK
About Fliprly Fliprly is the world’s first and only mobile app dedicated to buying and selling domains, websites, mobile apps, and other digital assets. Our iOS app and web platform are live, and we’re now ready to expand our reach with a robust Android app. Join us on this exciting journey to revolutionize the digital asset marketplace! What We’re Looking For We’re seeking a skilled Android Developer (freelancer or agency) to build the Android version of Fliprly from scratch. You’ll work closely with our existing team and leverage our iOS/web apps as references for functionality and design consistency. Responsibilities Build a high-performance Android app using Java. Translate our iOS design and features into the Android ecosystem. Integrate APIs and backend services (already available). Ensure a smooth, responsive, and bug-free user experience. Requirements Proven experience building Android apps...
Contract Spy
Dec 15, 2025
up to 6 Months
Senior Test Analyst at Valcon Group UK, London, 3 Months, £325 per day
£325 per day
Contract Spy London x3, UK
Role Overview We are seeking a highly experienced Senior Test Analyst to join our team. The successful candidate will play a key role in analysing requirements, creating high-quality test artefacts, executing tests, identifying defects, and supporting the delivery of robust software solutions. The role requires strong collaboration with developers, test managers, and cross-functional teams to ensure the accuracy, reliability, and testability of new features. Key Accountabilities Analyse user stories, acceptance criteria, and definitions of done to produce clear and accurate test scripts. Maintain high standards of quality and precision across all test artefacts for each release cycle. Prepare detailed test scripts to demonstrate business scenarios and expected outcomes. Log defects accurately with supporting evidence and manage them through to resolution. Ensure all testing activities adhere to agreed schedules and quality...
Contract Spy
Dec 15, 2025
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: •...
Contract Spy
Dec 10, 2025
6 Months or more
Test Lead at Mindera, London Paddington, 6 Months, £Contract Rate (Outside IR35)
Contract Spy Hybrid (Paddington, London, UK)
We are looking for a Test Lead/ Manager to join our crew! You’ll play a key role in driving our ambition to build a best-in-class engineering culture—where quality, collaboration, and continuous improvement sit at the heart of everything we do. We’re looking for an experienced Test Manager to join our client's Loyalty team and help deliver seamless, high-quality digital experiences to millions of customers. You’ll lead the testing strategy and ensure the reliability of systems that integrate personalized offers and mission-based rewards into our customer journey. Working closely with developers, data scientists, and the core loyalty platform team, you’ll help create a modern digital ecosystem powered by data and built with cutting-edge technology.   This is an initial 6 month contract (outside IR35). You will be required on client site 3 days a week in Paddington, London.   What You’ll Do: Test Leadership...
Contract Spy
Dec 08, 2025
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: •...
Contract Spy
Dec 02, 2025
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: •...
Contract Spy
Dec 01, 2025
6 Months or more
Java Software Engineer at Nomura, London, 12 Months, £Contract Rate
Contract Spy London, England, United Kingdom
Job description: Job title: Java Software Engineer     Role type: Contract (12 months) Department: Wholesale Data & Operations Technology (WDOT)     Location: London (Hybrid)             Company overview Nomura is a global financial services group with an integrated network spanning approximately 30 countries and regions. By connecting markets East & West, Nomura services the needs of individuals, institutions, corporates and governments through its three business divisions: Wealth Management, Investment Management, and Wholesale (Global Markets and Investment Banking). Founded in 1925, the firm is built on a tradition of disciplined entrepreneurship, serving clients with creative solutions and considered thought leadership. For further information about Nomura, visit www.nomura.com     Department Overview  The Wholesale Data & Operations Technology...
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