senior java backend developer jobs in London

Every year, hundreds of thousands of homeowners could move but don't, and homes that could sell never reach the market. The property market is slower and more closed than it should be. Homesearch is building the intelligence layer that gets it moving, connecting people, homes and agents through data and AI. Our vision is a fully connected, faster, more open...

Description At The Multiplayer Group (MPG), we create world-class multiplayer experiences through Co-Dev and Full-Dev partnerships. Our people-first culture supports a diverse, global team in a welcoming and flexible work environment. With teams spread worldwide, we prioritise connection—both online and in person. Giving back is central to who we are, with...

About 9fin9fin is the AI platform powering global debt markets — the world’s largest asset class at over $145 trillion.Debt markets are vast, global, and mission-critical, yet still run on fragmented data, PDFs, and manual workflows. 9fin replaces this broken infrastructure with a single platform that centralises proprietary credit data, deep analysis,...

Senior Software Engineer – Java (Contractor)ContractorStart Date: ASAPFully remote within HungaryAs aSenior Software Engineer (Java) – Contractorat Beyond Sports, you’ll be focused on delivering robust, high-performance backend services and APIs that power digital experiences for millions of sports fans globally. This role is ideal for an experienced,...

Senior Platform Architect (Progress OpenEdge & Java) | Crawley - London Technology: Progress OpenEdge, Java, Platform ArchitectureLocation: Crawley, London Role Summary We are seeking an experienced Platform Architect to define and drive the long-term technical vision, architecture, and strategy for a business-critical on‑premise back‑office platform....

**Discover your future at Citi** Working 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 Overview** Engineer the future of global finance. At Citi,...

Wise London is seeking a Software Engineer for our Scam Prevention team. This high-impact engineering role focuses on building scalable controls and detection systems to protect our global customer base and fight financial crime.You will work on backend and frontend development (approximately 80% backend, 20% frontend) using Java/Spring and React, with a...

Senior Product EngineerLocation: Nine Elms, London. Full time- hybrid with at least 3 days a week on site.You'll need the right to work in the UK and be based in London. We are not able to offer visa sponsorship for this role.About ZappZapp is building the future of convenience with a full stack approach to on-demand essential items, 24/7, delivered in...

About Us: Founded 20 years ago and headquartered in Chicago, the DV Group of financial services firms has grown to more than 600 people operating throughout North America, Europe and Asia. Since spinning out of a large brokerage firm in 2016, DV Trading has rapidly scaled as an independent proprietary trading firm utilizing its own capital, trading...

Salary: Competitive, dependent on experienceWorking Pattern: Monday to Friday, hybrid working with three days per week in our London officeAbout UsPraetorian Connections Ltd (PCL) is a leading provider of language-enabled Open Source Intelligence (OSINT), supporting geopolitical, security, and risk-focused decision making. We deliver high-quality OSINT...

A World-Changing Company   Palantir builds the world’s leading software for data-driven decisions and operations. By bringing the right data to the people who need it, our platforms empower our partners to develop lifesaving drugs, forecast supply chain disruptions, locate missing children, and more.The Role   Palantir Foundry is an end-to-end platform...

Hunter Bond in London is seeking a Java Developer with strong finance sector experience to join a leading trading firm. You will work on Greenfields development projects, focusing on buy-side trading platforms and collaborating with top developers in the sector.This is a 6 month rolling contract with a very high chance of extension, offering exposure to...

Understanding Recruitment is assisting an AI infrastructure company in London to hire a Senior Backend Engineer to help shape a data generation platform. You will contribute to building scalable features in a fast-paced environment.Join a hybrid London team, work with Kotlin (and possibly Java), and focus on performance, scalability, and technical direction...

Company DescriptionWe’re Checkout.com. You might not know our name, but companies like eBay, Spotify, Klarna, Uber, and Sony do, because we’re behind many of the digital experiences you use every day. We are where the world checks out, enabling over 10 billion transactions yearly for more than one billion global shoppers. Whether you want to book a...

We are currently seeking a Full Stack Engineer to join our dynamic team. Neoflow prides itself on its commitment to innovation, and as our Full Stack Engineer, you will play a pivotal role in developing and implementing cutting-edge solutions. This role is not just a job—it's a career packed with opportunities to grow and make a significant impact in a...

## Lead Java DeveloperApplyremote type: Hybridlocations: London United Kingdomtime type: Full timeposted on: Posted 30+ Days Agojob requisition id: 26949717**Discover your future at Citi**Working 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...

**Join our digital revolution in NatWest Digital X** In everything we do, we work to one aim. To make digital experiences which are effortless and secure. So we organise ourselves around three principles: engineer, protect, and operate. We engineer simple solutions, we protect our customers, and we operate smarter. **Job Description** This role...

We’re looking for a Founding Engineer to help build and scale the core platform of a regulated fintech product. This is a high‑trust, high‑impact role for someone who enjoys ownership, understands production systems, and wants to grow with the company. You’ll work closely with the CTO to design, build, and operate a secure, scalable API‑driven...

Our client has an exciting opportunity for a Fractional Fintech Backend Engineer to join the team. Location: London Salary: Competitive Job Type: Fractional, 1–2 days per week About The Company: Our client is an early-stage financial technology business building an intelligent platform that combines secure financial processing with advanced data and...

Senior Software EngineerA fantastic opportunity for a Senior Software Engineer to join a world-class technology company developing advanced AI-driven software solutions. Working within an exceptional engineering environment, you will play a key role in designing, building and enhancing highly sophisticated software platforms that solve complex real-world...