senior java developer jobs in London

Java DeveloperIs your CV ready If so, and you are confident this is the role for you, make sure to apply asap.London (Remote)4 months£466 per day inside IR35 - Umbrella onlyActive/eligible SC clearance requiredIf you enjoy turning complex system work into clean, reliable application components, this could be a great next step. Our Client is hiring a Java...

Have you got experience leading a team while remaining hands‑on and technically involved? Salary: up to £120k + bonus Location: London office 3 days a week We are delighted to be continuing our longstanding partnership with an FX Market Disruptor FinTech that has been acquired by a leading capital market. They are looking for an experienced Java Developer...

Founded in 2011, Fasanara is a global asset manager and technology platform. We manage c. USD 6 billion AUM (as of December 31, 2025) in Fintech strategies on behalf of pension funds and insurance companies in Europe and North America. With c.110 employees globally, we are a pioneer investor in Fintech Lending, enabling Real Economy Impact. Fasanara manages...

Role: Software Developer (Mid-Level) Location: London Salary: Competitive + Compensation Package The role On behalf of a highly regarded fintech organisation, we are partnering to find an experienced Software Developer to join their engineering team in London. This role is suited to an engineer with a strong foundation in building production systems who is...

Are you a bright, ambitious Java Developer looking to progress your career? You could be working on a financial Tech for Good product in an impactful Head of Software Architecture role at a scaling tech business. The platform enables easier money transfer to people in emerging economies, disaster and war zones that do not have access to a bank account;...

Fullstack Java Developer2026-09-18T00:00:00LondonGreater LondonGBEC2V 8Any2026-12-17T07:02:20.303hackajob is partnering directly with Atos to hire for this role. Atos is the Atos Group brand dedicated to AI-powered, secure, end-to-end digital services. Atos designs, develops, and operates critical digital environments that drive performance, resilience and...

Job Overview Our client, a growing Consultancy, is looking for a Java/React Developer to join their London based team. The work undertaken will be for a project in the Banking sector. The role is offered on a hybrid basis and candidates will be expected to be in the London office 2 days per week. Responsibilities Applicants will be responsible for leading...

Join to apply for the Java Developer - Leicester role at IBM. Introduction At IBM CIC, we provide technical and industry expertise to a wide range of public and private sector clients in the UK. A career in IBM CIC means you’ll have the opportunity to work with leading professionals across multiple industries to improve the hybrid cloud and AI journey for...

My client is a cutting-edge, fast-moving, modern consulting firm seeking an experienced Lead Software Engineer to deliver innovative solutions that enhance business efficiency for their top-tier financial services clients. You will play a pivotal role as both an individual contributor and technical lead. Key Responsibilities: Design and develop...

Fasanara Digital is a quantitative investment team applying a scientific, high frequency investment style in digital assets, seeking to achieve exceptional risk-adjusted returns for our investors. We were founded in 2018 and have grown to a 30-person strong team, managing over $500m USD in a basket of fully delta-neutral trading strategies. Our team members...

Role : Java Developer (Blockchain)Type : ContractLocation : London, UK (Hybrid)Roles and ResponsibilitiesBackend EngineeringDesign and develop enterprise-grade backend services using Java.Build APIs and microservices supporting digital asset products.Develop scalable and resilient systems aligned with banking standards.Ensure high availability, security,...

Hybrid Model - 2 days per week in the office The Opportunity An exciting opportunity has arisen for a hands-on Java Technical Lead to join a leading financial services organisation, contributing to the development and modernisation of complex, business-critical technology platforms. You’ll combine strong Core Java engineering skills with expertise in...

Salary - £115’000 – plus bonus and benefitsTech Stack: Java 11+, Spring/Spring Boot, multi-threading, profiling, performance tuning, RMI, Capital Markets, TDD, BDD, Microservices,Harrington Starr has partnered with a forward-thinking Software Vendor specialising in the development of SaaS applications for post-trade technology and Capital Markets. They...

SMBC: A trusted partner for the long term Here at SMBC Group, we want to help you find the next step in your career so read on to discover if this opportunity is the one for you. We like to recognise potential in our people, so we welcome your application even when your experience doesn't perfectly align with the job description. Whilst we'll always strive...

Discover your future at CitiWorking at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact.Job OverviewEngineer the future of global finance. At Citi, our Tech team...

About Us: Based in San Francisco, California, Turing is the world's leading research accelerator for frontier AI labs and a trusted partner for global enterprises deploying advanced AI systems. Turing supports customers in two ways: first, by accelerating frontier research with high-quality data, advanced training pipelines, plus top AI researchers who...

We are hiring for a multiple Java Developer role. Role: Java Developer Location: Multiple location, hybrid Type: Contract / FTC    Role Overview We’re looking for an experienced Java Developer to join a high-performing engineering team delivering secure, scalable, enterprise-grade systems. You’ll be working on modernising platforms using Spring...

A leading organisation within the Energy & Utilities sector is seeking an experienced Java Application Developer to support the delivery of business-critical applications within a modern cloud-native environment.£520 p/d Inside IR35Mainly Remote (1 day a week in London, the rest is WFH)6 month+ contractIn the role you will design, develop and support...

Salary: up to £200k base + bonus Summary Tech-savvy algorithmic trading firm looking to hire a Java Developer to help develop and operate the off-exchange trading system and products. This is a superb opportunity for a well-organised and pragmatic engineer with a passion for concise, efficient code to join one of the only Java teams you will find in HFT. A...

# Java Backend Developer,November 30, 2025### Job Description**On behalf of our client, we are seeking a Java Backend Developer – London, UK (Full-Time Permanent Role).**Our client, a fast-growing technology organisation, is looking for a skilled Java Backend Developer to build secure, scalable backend services and high-performance APIs supporting modern...