java software engineer jobs in London

Senior Java/FIX Engineer - IG PrimePrime Java/FIX Engineer ‰ So, who are we? IG Group is a FTSE 100 fintech operating across five continents, serving over 1.4m customers and handling billions of dollars in transactions – built on scale, trust, and proof. We didn't pivot to innovation; it's how we've always operated. What that means for the people who...

Wissen Technology is looking for an Intermediate/Senior Java Engineer to join their team in London, UK. This is a full-time position with a hybrid work model that requires 3 days a week onsite.The ideal candidate will have a solid background in Java programming, experience in enterprise application development, and a passion for innovative solutions....

Spotify is seeking a Senior Backend Engineer to architect, develop and operate Java services powering the subscriptions journey. You will design scalable backend systems and APIs on Google Cloud Platform, collaborating with squads, engineering managers and product managers.Based in London or Stockholm, the role offers hybrid work with some in-person meetings...

Solytics Partners Careers is seeking a skilled developer to design and implement market connectivity solutions using Core Java. This hybrid position in London offers the chance to work on integrating electronic trading venues and developing scalable services. Candidates should have strong expertise in Java, experience with TransFICC’s Connectivity...

Luxoft is seeking a senior Java engineer to join its global tech team, delivering high-performance, low-latency platforms for real-time processing. You will work on event-driven and reactive systems, optimize JVM performance, and push memory and networking boundaries on Linux.You will apply advanced profiling, GC tuning, and concurrency techniques to meet...

IG is seeking a Senior Software Engineer - (Java/AI) Brokerage Services to advance AI-enabled engineering practices within the Brokerage Services team. You will code in Java, build AI-assisted tooling, and own features end-to-end, from design through production support.We operate in a high-velocity, risk-aware environment with a hybrid model (three days in...

Contract: 12 monthsLocation: LondonWorking Model: Hybrid - 2 days onsite, 3 days remoteRate: £500 inside IR35 per dayClearance: UK Security Check (SC) clearance requiredThe OpportunityJava Full Stack Engineer - SC ClearedThe OpportunityWe're seeking an experienced Java Full Stack Software Engineer to join a software engineering team delivering technology...

Discover your future at Citi Working at Citi is far more than just a job. A career with us means joining a team of approximately 219,000 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 Overview Low Latency Java Engineer Engineer the future of global...

Elsevier is seeking a Software Engineer III to design and develop scalable Java and JavaScript applications within the Identity & Access Management platform. You will help operate a high-availability identity service on AWS ECS/EKS, implement code with CI/CD pipelines, and participate in AI-assisted development workflows.The role emphasizes collaboration in...

Office Location: Temple, London - hybrid working environment (3 days in office per week)About InvestaInvesta is building the UK’s first zero-commission Options and Stocks trading platform. Legacy platforms typically feature high fees and complex interfaces that cut out the majority of retail investors. We are building a streamlined alternative to fix...

Java Developer - 6 month contract - Telford (Hybrid 2 days onsite)I have an immediate opportunity for an experienced Java Software Developer to join a busy team redeveloping legacy systems. You will work within an agile environment to develop, enhance, and maintain Java-based services that replace or improve legacy systems. The work centres on backend...

Direct message the job poster from StationAssociate Director - Station ️ To attract the top talent in Product and Software Engineering, you must approach things uniquely - I'll guide you…London, United Kingdom | Full-time | PermanentI'm working with a global business undergoing a major digital transformation, and they’re looking to bring in an...

At CoMind, we are developing a non-invasive neuromonitoring technology that will result in a new era of clinical brain monitoring. In joining us, you will be helping to create cutting-edge technologies that will improve how we diagnose and treat brain disorders, ultimately improving and saving the lives of patients across the world.The Role:The Software team...

About our TeamSciVal is Elsevier’s research-analytics platform. It helps universities, research institutions and funding organizations evaluate research performance, benchmark against peers, understand collaboration networks, identify emerging research areas, and support evidence-based strategic decisions. SciVal is built on trusted, connected research...

We are looking for a product-minded Software Engineer to join our Control squad, with the role open in London, Paris or Barcelona. The Control squad helps finance teams set the right guardrails around company spending, without slowing employees down. We build the policies, workflows and visibility tools that make it easier for companies to control spend...

G MASS are currently looking for an experienced Software Engineer to join a leading Investment Manager client. This role sits within a core engineering team at the centre of a highly quantitative investment environment, supporting the technology and data platforms that underpin systematic trading strategies and advanced research. You will be working in a...

At Too Good To Go, we have an ambitious goal: to inspire and empower everyone to fight food waste together.40% of all food produced in the world is wasted. And that has a huge impact on the health of our planet, with 10% of greenhouse gas emissions coming from food waste.We’re more than an app: we are a certified B Corporation with a mission to empower...

The roleWe're a well-funded startup using AI to decrease risk and grow margin in the architecture, engineering and construction industry. Our current focus is general contractors. When they bid to build a major project, such as a skyscraper or an airport, they price millions of pounds' worth of project risks, and treatments for them, by hand, and often...

On-site TL;DR AI is collapsing the time and effort required to turn ideas into working software. We're redesigning how we build around that — using agents across the software lifecycle and enabling more of our team to ship changes directly. Job Description Agentic Software Engineer London Full-time We're hiring an experienced software engineer who is...

Job DetailsDate Posted: 2026-09-24 Country: United Kingdom Location: London, London, City of Position Role Type: Onsite Senior Software Engineer Location: London Permanent Onsite Due to the interesting work we do and the sector this team is working in, we require all candidates to hold an active eDV clearance for this role.About usAt Raytheon UK, we take...