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Contract Senior Java Developer – Data/MarketmakingOutside IR35 (6 month rolling) In office – City of LondonQuant Capital is hiring for a small, high-performing market maker in London.Ensure you read the information regarding this opportunity thoroughly before making an application.This is a junior-to-mid role focused primarily on Java development, with a...

Capitolis in London is seeking a Senior Software Engineer to design and build scalable, secure Java-based solutions and drive architectural decisions across the P.O products. You will work with product managers and R&D to implement roadmap features using Spring Boot, Docker, and cloud services.The ideal candidate has a strong computer science background, 8+...

FDJ UNITED is seeking a Senior Quant Model Engineer to lead on building, optimising and deploying production-grade services for a cutting-edge sportsbook platform. You will work within the Pricing Engineering team, focusing on low-latency microservices, robust APIs, and scalable data products.The role emphasizes hands-on technical delivery, architectural...

CGI is seeking a Senior Full Stack Developer to help shape digital services supporting access to justice across the UK. You’ll own reusable tech built to onboard faster, integrate consistently and operate reliably, using Java and Angular to tackle complex challenges.This hybrid role works with a UK Government Department client, and requires UK Security...

A leading B2B SaaS technology company in London is seeking a Senior Java Engineer with expertise in Spring Boot and cloud-based systems. You'll design and scale products, mentor colleagues, and contribute to technical initiatives. The role offers a salary of up to £110,000 plus bonuses and excellent pension benefits. Join a collaborative environment where...

Senior Java Engineer (AI-Augmented Delivery, Kafka, SpringBoot) - Banking - London/Hybrid Daily rate: €600 - €700 (inside IR35) Duration: 12 months Start: ASAP Hybrid: 2 days per week My client is looking for a Senior Java Engineer to join a contract basis. They need someone with strong core Java expertise as the role primarily involves server-side...

Job ID: 99413247936Posted: 2026-08-21Location: London, England, United KingdomCategory: Technology, Applications Development, ProfessionalCompany: CitiEngineer the future of global finance. At Citi, our Tech team doesn't just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+...

Company DescriptionWise is a global technology company, building the best way to move and manage the world's money.Hit Apply below to send your application for consideration Ensure that your CV is up to date, and that you have read the job specs first.Min fees. Max ease. Full speed.Whether people and businesses are sending money to another country, spending...

London Stock Exchange Group (LSEG) is hiring a Senior Developer in London to join the Regulatory News Service team. You will drive end-to-end development, collaborating with tech and business partners to deliver reliable market information and services.The role involves full lifecycle Agile development, requirements analysis, design, coding, testing and peer...

Senior Cloud Engineer (Java/Python) – Finance AI Platform  Experience: 10+ Years  Role Overview  We are seeking a hands-on Senior Cloud Engineer to support the development of a Finance AI platform. The role is focused on building scalable, cloud-native enterprise applications and integrating AI capabilities into existing business platforms....

Opencast | B Corp™ is looking for Senior Software Developers to join their team in Birmingham, England. The role emphasizes engineering craft and thoughtful problem-solving, where developers use agile methodologies and practices such as TDD.You'll work collaboratively to deliver high-quality software solutions to clients across the UK while fostering...

Searchability is seeking a Senior Engineer to join our global streaming technology teams in London. You will design, develop and deploy scalable backend services and APIs using Java/Spring, AWS and modern cloud patterns.You’ll work across agile squads, collaborating with cross-functional teams in London, Lisbon and Prague to deliver reliable,...

La Fosse, in partnership with a leading logistics technology business, is seeking an excellent Software Engineer to join their Payments & Finance product team in their London office.This office-based role requires 5 days per week on-site and offers a competitive salary up to £100,000 plus extended benefits.You will contribute to the core platform, building...

Anaplan Inc is seeking a Sr. Principal Engineer to join our team in Manchester, UK. The successful candidate will lead the design and delivery of platform capabilities, including the architecture of API gateways and backend engines.The ideal candidate will have extensive experience in Java/Kotlin and cloud technologies, a deep understanding of distributed...

A leading software consultancy in Bristol is seeking a Full Stack Software Engineer with strong Java and AWS experience. You will implement and manage software solutions while leading teams to deliver high-quality systems for clients. The role offers a mix of working in modern city-centre offices and from home, along with comprehensive support for career...

**Senior Software Engineer (Java Or Python)** Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we...

Company DescriptionWise is a global technology company, building the best way to move and manage the world’s money. Min fees. Max ease. Full speed.Whether people and businesses are sending money to another country, spending abroad, or making and receiving international payments, Wise is on a mission to make their lives easier and save them money.As part of...

Role Description Senior Java Developer-AWS-Microservices We are expanding our Java Development team in Nottingham! If you’re passionate about building high-quality software that enhances the lives of consumers, this is your chance to work in a collaborative, self-organized engineering environment. Type: Full time Location: Nottingham Work model:...

A fast-growing tech firm is seeking a Senior Full Stack Developer to work on AI-powered tools that support critical decision-making. You'll handle a React frontend and Java/Spring Boot backend, guiding architecture, mentoring developers, and driving engineering standards. Offering up to £85k in salary with additional benefits. Ideal candidates should have...

First Derivative is driven by people, data, and technology, unlocking the value of insight, hindsight, and foresight to drive organizations forward. Counting many of the world's leading investment banks as clients, we help our clients navigate the data-driven, digital revolution that is transforming the financial services sector. Our global teams span across...