senior java backend developer jobs in London

We are seeking a seasoned, high-caliber Senior e-Trading Java Developer to join the UI & Electronic Trading team. You will contribute directly to a strategic multi-year greenfield build-out and modernization of our core Rates electronic trading platform. The position offers a dynamic working environment embedded closely with global trading desks. The ideal...

DescriptionContract Senior C++ DeveloperLocation: London, 2 to 3 days onsite in Kings CrossContract: Immediate start - 12 week contractWho We AreAND Digital are on a mission to close the world's tech skills gap.We help organisations navigate the future of technology by combining human expertise, emerging tech and AI to deliver better outcomes, faster.Since...

Location: Glasgow or London (2 Days Onsite) Length: Initial 3-Month Contract We're currently supporting a leading consultancy partner on a large-scale engagement within the Wealth and Asset Management sector. They are looking for a Senior/Lead Java Developer to join the team and play a key role in delivering critical technology initiatives. This opportunity...

About Us:Based in San Francisco, California, Turing is the world’s leading research accelerator for frontier AI labs and a trusted partner for global enterprises deploying advanced AI systems. Turing supports customers in two ways: first, by accelerating frontier research with high-quality data, advanced training pipelines, plus top AI researchers who...

LogisticsEmployment type: PermanentJob DescriptionAs a Senior Python Engineer, you will play a critical role in designing, developing, and optimising our innovative solutions. You’ll be responsible for driving the technical execution of projects, mentoring other developers, and ensuring our platform remains scalable, reliable, and secure. This role...

Wise is a global technology company, building the best way to move and manage the world’s money. **Min fees. Max ease. Full speed.** Whether people and businesses are sending money to another country, spending abroad, or making and receiving international payments, Wise is on a mission to make their lives easier and save them money. As part of our...

DescriptionAt JP Morgan Chase, we understand that customers seek exceptional value and a seamless experience from a trusted financial institution. That's why we launched Chase UK to transform digital banking with intuitive and enjoyable customer journeys. With a strong foundation of trust established by millions of customers in the US, we have been rapidly...

A London-based trading company is seeking an experienced Java Engineer to join their technology team on an initial 6-month contract. The role focuses on backend development using Java and Spring Boot, building scalable services, and collaborating with various teams. Ideal candidates will have Java expertise, experience in financial services, and familiarity...

Senior Backend Java Engineer Build software that matters. Shape the future of engineering. We're looking for an experienced Senior Backend Java Engineer who is passionate about building scalable, high-quality software and helping teams grow. This is more than a hands‑on engineering role—you'll influence technical direction, mentor other engineers, drive...

Senior Frontend EngineerRemote (UK-based) | Full-TimeReactive Markets is the 2026 OTC Trading Platform of the Year( Risk.net ). Our network handles over $50 billion in daily trading volumes across FX, Equities, and Cryptocurrency, connecting 40+ of the world's leading liquidity providers. We build trading systems that operate at the edge of what's...

Help Us Build The Future of Travel At Airalo, we're making it easier for people to stay connected wherever they travel. As the world's first eSIM store, we help millions of travelers access affordable mobile data in 200+ countries and regions around the world. Today, we're a team of 400+ people across 60+ countries, building a product used by travelers every...

We are seeking an expert Senior Low-Latency Java Engineer to join our team. Responsibilities • Latency Optimization: Profile, analyze, and systematically eliminate long-tail latency spikes across the FX eTrading application pipeline. • Zero-GC Engineering: Design, write, and refactor high-throughput core Java code utilizing zero-allocation and low-GC...

We are hiring across two overlapping profiles — Senior Java Developer and Application / Migration Architect — and expect most people to move between programmes as engagements start and complete. xpwpeyx Not sure what skills you will need for this opportunity Simply read the full description below to get a complete picture of candidate...

Tesco's Personalisation team is hiring a backend engineer to build real-time recommendations, offers, targeting, and experimentation across web, mobile and in-store channels. You'll tackle low-latency services, streaming data, and ML-powered decisions at scale, collaborating with product, data science, and analytics to turn customer insights into action.The...

Company DescriptionDepop is a peer-to-peer circular fashion marketplace where anyone can buy, sell and discover secondhand fashion. Our mission is simple: to make fashion circular by making secondhand as exciting and rewarding as buying new.Founded in 2011, Depop’s diverse community has helped move resale into the mainstream, where buying secondhand is no...

DescriptionJoin us to shape the future of web applications with innovative AI-driven solutions. You will have the opportunity to work across both backend and frontend technologies, collaborating with diverse teams to deliver impactful customer and internal platforms. Your expertise will help us build reliable integrations and drive experimentation and...

(Mid/Senior/Staff) Backend Engineer – London Please note that the positions are based in London, United Kingdom — relocation and visa support is provided if required. THE BEST WORK OF YOUR CAREER Trade Republic is the largest savings platform in Europe — we operate in 18 countries, serving +10 million customers who trust us with over €150B in assets....

Universal Music Group UK seeks a Senior Developer responsible for designing and maintaining backend services using .NET Core and AWS. You will work in an agile team to deliver secure and reliable solutions.The ideal candidate has extensive experience with backend development, AWS serverless solutions, and container orchestration with Docker and Kubernetes....

Join to apply for the Software Engineer - Backend role at Helsing. Helsing is a defence AI company. Our mission is to protect our democracies. We aim to achieve technological leadership so that open societies can continue to make sovereign decisions and control their ethical standards. The role At Helsing we develop and deliver AI-based capabilities and the...

Role: We are looking for an experienced, highly motivated Python developer with expertise in building robust data pipelines, creating and manipulating DataFrames, and turning defined specifications into reliable, production grade scripts. The role centres on developing and orchestrating the data infrastructure behind a systematic research platform: document...