java swing developer jobs in London

Contract: 6-month rolling contractStart Date: ASAPOverviewWe are looking for three experienced Senior Java Developers to join a high-performing engineering team delivering large-scale, cloud-native applications. You'll be working on modern distributed systems, building highly scalable services using Java, Kafka, AWS and Kubernetes within an Agile...

JPMorgan Chase & Co. in London/Greater London is seeking a Lead Software Engineer to design, build, and operate secure, scalable financial software within Markets Technology.You will own production outcomes, drive architecture decisions, and advance AI-assisted development within an agile team. The role requires strong SDLC expertise across Python, Java, and...

Referment is working with a London-based technology company that builds data transparency and accountability tools for the investment management industry. Its platform aggregates and validates cost and holdings data from across the investment supply chain, allowing pension funds, asset managers and other service providers to share and interrogate validated...

Nomura Holdings, Inc. seeks an Algo Developer for a 6 to 12 month contract in London. The role involves designing and developing algorithmic trading systems and requires expertise in Java and collaboration across teams.The ideal candidate will have a bachelor's or master's degree in computer science or engineering, and experience in algorithmic trading. Join...

Recognised as a Great Place to Work, ITRS is an Enterprise SaaS provider with industry-leading solutions. Our mission is to make society’s critical technology work via automated & holistic IT observability solutions that safeguard critical applications and enable innovation.With our prestigious customer base includes 90% of the world's top investment...

IG Group is seeking a Senior Software Engineer for their Brokerage Services team to integrate AI into engineering processes. You'll build AI-assisted tools and enhance automation in coding and testing.Ideal candidates will have strong Java skills, experience in test-driven development, and an appetite for automation. A hybrid work model is offered, with...

Job Description Are you an experienced Senior Software Engineer or Technical Lead who enjoys remaining hands‑on while guiding teams and shaping technical solutions? Are you an experienced Senior Software Engineer or Technical Lead who enjoys remaining hands‑on while guiding teams and shaping technical solutions? A leading specialist technical consultancy...

Hunter Bond is seeking a mid-level Software Developer to join its engineering team in London. The role focuses on building production-grade systems with ownership over key components that directly impact revenue.You will work closely with traders and product teams to deliver robust, scalable software in a fast-moving fintech environment. The ideal candidate...

About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful and innovative technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. We are passionate about user-centred design, agile delivery, and building...

Quant Capital is hiring for a small, high-performing market maker in London. This is a Mid-to-Senior role focused primarily on Java development, with a secondary responsibility owning straightforward Python ETL/data ingestion into AWS and PostgreSQL. This is a growing team focused on data ingestion and building tooling for the wider firm.What you’ll...

Mandatory skills: Java, Spring boot and **Solace**   **Skills** Design, develop, and maintain high-quality **Java with Solace** / ION / Python applications using SpringBoot. Proficiency in Java core 8+ is a must. Proficiency in Junit. Implement Solace publication/subscription Implement and optimize RESTful APIs and microservices. Integrate with...

We are looking for an experienced **Java Fullstack Developer** . Must-Have Skills: • Strong experience in **Java, Spring Boot & Microservices** • Good hands-on experience with **React.js & Redux** • Ability to work **independently** on development tasks Nice to Have: • UI/UX experience • **Figma** knowledge

We're hiring: AWS Technology Lead — Java ModernisationLondon (Holborn), hybrid · [Permanent / Contract] · 12–15+ yearsNCONS Talent Solutions is looking for a hands‑on AWS Technology Lead to take a monolithic Java application running on EC2 and rebuild it as an AWS‑native solution.This is a builder-leader role. You will design the target...

As a Software Development Engineer at Veeqo, you will be designing and building the software to support our journey from recent acquisition to operating at Amazon scale. You will work closely with product managers, UX designers, as well as other tech teams across Amazon. This role is a good fit for someone who thrives in a dynamic environment, is both...

Clearing Full Stack Developer Hybrid Working - London -50% a week on site. Financial Services Lorien's leading banking client is looking for an experienced Full Stack Developer to join a major greenfield technology programme within Financial Services. You will be part of a team building a brand-new Asset Servicing platform, replacing both an existing legacy...

Alexander Ash Consulting is seeking an experienced Java/Spring Boot Developer for a leading banking client. You will design, develop and maintain scalable Java applications and Spring Boot microservices within a fast‑paced financial services environment.You will collaborate with architects, product owners and other engineering teams to deliver secure,...

## Senior Software Engineer - (Java/AI) Brokerage ServicesApply: City of London - United Kingdom: Full time: Posted Today: End Date: October 26, 2026 (20 days left to apply): R\\_17905**Job Title**Senior Software Engineer - (Java/AI) Brokerage Services**Job Description**# **So, who are we?**IG has been at the centre of retail trading and investment...

Job Title Senior Full Stack Engineer - (AI enablement) Lifecycle Job DescriptionSo, 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...

Our client is a technology consultancy. Ready to work somewhere that cares more about how you build software than how fast you can ship it?We don't measure developers by the number of tickets you complete. We care about engineering craft, clean design and thoughtful problem-solving. Our client consultants deliver in complex environments, pairing often and...

Responsibilities Lead architecture assessment, modernisation planning, and migration of enterprise Java applications. Define and drive the technical architecture and implementation approach for complex Java-based enterprise applications. Assess application dependencies, frameworks, integrations, infrastructure components, and security controls to identify...