Jobs for full stack java developer legacy modernization cloud migration at London

Help build and operate reliable, scalable and secure digital services that support UK businesses and trade . Department for Business, Innovation, Science and Trade (BIST), in partnership with Inspire People, is seeking a Senior Backend Engineer. Whilst the team primarily develops in Python, we welcome applications from experienced backend developers with...

Catapult is seeking a Full-Stack Software Engineer to bridge legacy C++/Qt desktop work with modern web and mobile tools. You will lead the shift to web and hybrid workflows, delivering production-grade admin and customer-facing features.You’ll own frontend architecture, consume complex internal APIs, and collaborate across teams to standardize development...

Do you want your voice heard and your actions to count? Discover your opportunity with Mitsubishi UFJ Financial Group (MUFG), one of the world’s leading financial groups. Across the globe, we’re 150,000 colleagues, striving to make a difference for every client, organization, and community we serve. We stand for our values, building long-term...

Job Title: Senior Software Developer Organisation: Northern Ireland Assembly Contract: Temporary - Full Time Hours - Contract duration to end Feb 2027 Salary: AG7 - £36,122 (+ £7,542 salary supplement p.a.) As a Senior Software Developer within the Information Systems Office, you will be responsible for planning, developing and integrating related software...

hackajob is partnering directly with NEXT to hire for this role. The Role: An exciting opportunity has arisen to join our Business Intelligence Systems (BIS) team at a pivotal moment in our tech journey - transitioning from legacy architectures to a modern cloud-first data ecosystem. You won't just be maintaining systems; you'll be building the future of our...

Head of Engineering - Developer Experience & Platform Awin is seeking an exceptional engineering leader to shape the future of how our engineers build, ship, and operate software at scale. As Head of Engineering – Developer Experience & Platform, you will own the end-to-end developer experience strategy, drive the adoption of AI-native engineering...

Senior Backend Developer (f/m/x) with Business Analysis & AI Expertise Engagement Details Full-time contract (5 days per week). Start: ASAP until end of December 2026 (extention possible) Remote working with occasional onsite presence in Vienna, when required. Candidates performing onsite work in Austria should be willing and able to comply with Austrian tax...

Who we are: Billigence is a boutique data consultancy with global reach, helping organisations transform the way they work with data. We specialise in delivering high-impact solutions across Data Management, Data Governance, Cloud Data Platforms, AI Enablement, and Advanced Analytics. Headquartered in Sydney with offices across the UK, Europe, and APAC,...

The Identity and Access Management group is responsible for the protection of customer and corporate data. We are connected to all parts of Amazon's business and it’s massive, worldwide service-oriented architecture. We are starting work on a new mission critical system that will preserve and improve the trusted experience that Amazon provides to its...

Senior Java Developer, Execution Algos and Smart Order Router (Low Latency)London, hybrid A fast-growing electronic trading firm is building the next generation of its execution technology in London and wants a senior Java engineer to own the EMS and Smart Order Router (SOR) end to end. This is a greenfield build. You will design and develop a low-latency,...

Role: Technical Product Owner Job Type: Permanent Location: Remote - UK Overview We’re currently supporting a growing consulting organisation that is investing heavily in the modernisation of its digital platforms and internal product ecosystem. This is a highly collaborative engineering environment where developers are expected to contribute across the...

Project Description:The project is focused on improving the security, release reliability, maintainability, and operational resilience of business-critical banking applications.Forward Deployed Engineers will conduct targeted, hands-on engagements with development teams that are facing challenges with vulnerability remediation, automated testing, legacy...

Full-Stack Web Developer — React, FastAPI, Elasticsearch (AWS/GCP) About Clarity Clarity is redefining customer experience with AI. Our mission is to empower businesses to deliver faster, smarter, and more human service interactions. By combining cutting‑edge AI with intuitive design, we enable customer service teams to operate more efficiently while...

Product Engineer (Fullstack) | London | AI Startup I am working with one of Europe's fastest-growing AI startups who are seeking a Product Engineer (Fullstack). Already trusted by some of the world's most innovative technology companies, they are now scaling rapidly following significant investment and are looking for engineers who enjoy solving difficult...

Engineering Lead (two positions) | Rebuild a Bank's Core Technology | London / Hybrid (2 days in office) | £100,000 - £120,000I'm working with a major UK bank on two Engineering Lead hires, both in the team responsible for moving the bank off its legacy technology and onto an entirely new cloud platform.This is a build job, not a maintenance one. The team...

Job Title: Java FullStack developer (ReactJS & AngularJS) Location: London, UK About the Job you are considering: We are seeking experienced Java FullStack developer (ReactJS & AngularJS) with strong expertise in banking domain who will overseeing the planning, execution, and successful delivery of projects Hybrid working: The places that you work...

Developer / Senior Developer - Azure Data Platform /DataBricksLocation:Leicester (Hybrid: 3 days per week in-office) Contract Type:12-Month Fixed Term Contract Job Schedule:Full-timeThe OpportunityWe are seeking a skilledDeveloper / Senior Developerto join a rapidly expanding Business Intelligence Systems team for an industry-leading business. In this...

# 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...

We're recruiting on behalf of a well-established IT services and consultancy business for a Full Stack Developer to join their product-focused development team. In this role, you'll design, build, and maintain scalable, high-quality software across both front-end and back-end services, working as part of a cross-functional team alongside Product Managers, UX...

Principal Network Architect | Segment Routing | SRv6Berkshire | Hybrid | Contract | Outside IR35Tier 1 Service Provider | SRv6 | IPv6 | MPLS | Segment Routing | Network Architecture | Cisco NSORole Principal Network Architect, Network Architect, SRv6 Architect, IP Transport Architect, Service Provider Architect, MPLS Architect, IPv6 Architect, Segment...