senior java backend developer jobs in London

Paid Parental Leave 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 build systems that matter....

DescriptionSenior Full Stack Developer Internal Title: Software Engineering Senior ConsultantLocation: London, UK (Hybrid - typically 1-2 days per month in office)Contract: Permanent, Full-time Package (perm): £70,000 - £85,000 + 10% Bonus + 10% Shares + Benefits (see more below)About AppviaAppvia is a specialist cloud, platform, and solutions engineering...

Goldman Sachs is seeking a backend software engineer to transform our systems with Java and Spring, working across microservices and MongoDB. You will collaborate with global teams to build scalable platforms and contribute to the SDLC process.The role involves hands-on development, testing, monitoring, and delivering reliable data-driven solutions in a...

# Backend DeveloperSenior LevelLondonPosted 8 days ago### Role OverviewWe are heavily recruiting a Senior Backend Developer to spearhead our core infrastructure in London. Central to this role is the expert development of robust server-side logic, sophisticated e-commerce API systems, and high-stakes database handling. You will ensure maximum performance,...

A leading recruitment agency in London is inviting applications for the role of Principal Consultant - JAVA Developer. This position requires expertise in Java and substantial experience with code enhancement and migrations. The successful candidate will be responsible for understanding existing systems, offering strategic insights, and supporting...

Information Tech Consultants Ltd in London is hiring a Junior Java Developer to design, develop, and maintain Java-based applications. You will work on scalable backend services, collaborating with cross-functional teams to meet business requirements.The ideal candidate has 2–4 years of Java/Spring Boot experience, strong knowledge of REST APIs and...

Contract: 12 Months Location: Canary Wharf, London – 3 days onsite / 2 days WFH We are currently seeking 2 experienced Senior Java Developers to join a major retail banking transformation programme within a leading financial services organisation. You will be working on a large-scale payments and accounts platform, helping modernise critical banking...

A fast-growing technology organisation in London is seeking a skilled Java Backend Developer for a full-time permanent role. You will design and maintain backend services and APIs, focusing on security and scalability. The ideal candidate has over 4 years of experience with Java and expertise with Spring Boot. This hybrid role offers a collaborative working...

If you're a Principal level Java or Kotlin Developer who wants to stay hands-on while having a genuine influence over architecture, technology and the engineers around you, this is a role worth exploring. This is an opportunity to take a leading technical role on a large, high-throughput platform within the telecommunications and online payments space.Java /...

Senior Java Developer - UK Investment Bank (Tier 1) Rate: £750 - 800 PAYE Inside IR35 (£195,000 - £208,000 annum gross) - (Equiv. to £1,103.36 - £1,176.92 Umbrella) Contract: 6 months + extensions (long term project 2years minimum, potential for 4-6 years) Location: London, UK Flexi: 2 days a week onsite, 3 days from home Benefits: 38 days annual leave...

We are looking for Java developers, from experienced seniors to hands‑on principal engineers, to join long‑term greenfield projects with a leading financial institution in London. You will be part of small, high‑calibre engineering teams delivering strategic rebuilds and modernisation projects, replacing legacy systems with clean, cloud‑aligned...

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...

Imagine a future where everyone has instant, low-cost access to powerful computing resources. We're building a fully featured European cloud computing platform - with everything one needs to run, scale, and deploy applications and workloads. In addition, our infrastructure runs on 100% renewable energy. We’re ambitious, curious, and gutsy doers. We...

Overview Job Description Out of the successful launch of Chase in 2021, we’re a new team, with a new mission. We’re creating products that solve real world problems and put customers at the center - all in an environment that nurtures skills and helps you realize your potential. Our team is key to our success. We’re people-first. We value...

We're Hiring: Java Developer (need IMMEDIATE JOINERS who can start by 24th Sept 2026) Location: Onsite (London) Type: Full-time | Permanent Level: Junior Job Summary: We are seeking a skilled and motivated Java Developer to join our growing software development team. As a Java Developer, you will be responsible for designing, developing, and maintaining...

JPMorgan Chase is looking for a Software Engineer III to join their International Consumer Bank team in London. This role involves developing cutting-edge cloud-native applications while ensuring reliable and secure systems. Candidates should have a solid background in Java, cloud technologies, and a passion for solving complex problems in the financial...

This job is with Global, an inclusive employer and a member of myGwork – the largest global platform for the LGBTQ+ business community. Please do not contact the recruiter directly.Accepting applications until: 16 October 2026Job DescriptionYour Role: Senior Java DeveloperWe're looking for an experienced backend engineer with a passion for technical...

About Scrumconnect ConsultingScrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens.With a strong commitment to user-centred design and agile delivery, we continue to build...

Job Reference: NJ0416Date Posted: 24 September 2026Recruiter: Nexus Jobs LimitedLocation: LondonRemote Working: 100% remote working possibleSalary: 55,000 to 80,000Sector: I.T. & CommunicationsJob Type: PermanentWork Hours: Full TimeContact: Jas GujralEmail: : Apply for this job nowJob DescriptionSenior Backend Developer with C# .net Working as part of...

SENIOR BACKEND SOFTWARE ENGINEER | UK REMOTE | £100,000 - £120,000 About the Opportunity My client, an exceptional aerospace tech firm building next-gen communication intelligent networking company are looking for a Senior Backend Engineer to work on their highly technical core systems. The Role Join their core engineering team to design, build and...