staff java backend developer jobs in London

United States Digital Space LLC is seeking a candidate to join their Contacts team, focusing on scaling backend solutions for a recipient management product. Your role will involve collaborating closely with engineers and designers, ensuring customer experience is at the forefront of development.Ideal candidates should have experience with distributed...

Citi London is seeking a Lead Web3 Engineer to drive backend development for the Integrated Digital Assets Platform. You will build enterprise-grade web applications, connect to blockchain networks, and develop APIs and services that enable tokenized assets and digital infrastructure.The role requires strong Java/Spring experience, familiarity with Web3...

At Ripple, we’re building a world where value moves like information does today. It’s big, it’s bold, and we’re already doing it. Through our crypto solutions for financial institutions, businesses, governments and developers, we are improving the global financial system and creating greater economic fairness and opportunity for more people, in more...

The OpportunityJoin Attest at a pivotal moment: we're transforming how the world's leading brands discover and act on consumer insights. As a Senior Software Engineer on the Measure squad, you'll help grow and evolve Attest Measure, our quantitative survey platform that gives brands robust, at-scale consumer research — from survey design and fielding...

Join Axon and be a Force for Good. At Axon, we’re on a mission to Protect Life. We’re explorers, pursuing society’s most critical safety and justice issues with our ecosystem of devices and cloud software. Like our products, we work better together. We connect with candor and care, seeking out diverse perspectives from our customers, communities and...

All the details As part of the M&S Software Engineering team, you’ll be joining a well-loved historic brand, working on solutions that serve millions of loyal customers and thousands of colleagues! With ethical values that run right through the company’s core and technology leaders that truly understand software engineers and engineering, it’s an...

Lead/Principle Software EngineerClearance Required:Active SC Clearance (Mandatory) The Opportunity We're looking for an experiencedSoftware Engineerto join a high-performing team delivering secure, mission-critical solutions for Defence, National Security, and Government customers. This role offers the opportunity to design and develop modern backend...

Caxton Associates, founded in 1983, is a global trading and investment firm with offices in London, New York, Monaco, Singapore, and Dubai. The firm manages client and proprietary capital through global macro hedge fund strategies, trading across a broad range of global markets and instruments.About the RoleCaxton is seeking a Quantitative Developer to join...

Scale's rapidly growing Global Public Sector team is focused on using AI to address critical challenges facing the public sector around the world. Our core work consists of: Creating custom AI applications that will impact millions of citizens Generating high-quality training data for custom LLMs Upskilling and advisory services to spread the impact of...

Placements24 is seeking a remote Backend Software Developer to design, build, and maintain robust server-side services and APIs for our cutting-edge applications. You will collaborate with a distributed team, focus on performance, scalability, and data modeling with PostgreSQL/MySQL/MongoDB, and implement RESTful APIs using Python, Node.js, Java, Go, or...

About Us Fanatics is building a leading global digital sports platform. We ignite the passions of global sports fans and maximize the presence and reach for our hundreds of sports partners globally by offering products and services across Fanatics Commerce, Fanatics Collectibles, and Fanatics Betting & Gaming, allowing sports fans to Buy, Collect, and Bet....

Company Description 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...

Android EngineerDescriptionWe are looking for an Android Engineer to work on mobile applications that are used bycardholders around the world. We want someone with strong technical skills and creativity; someone who enjoys solving tough problems and working with innovative technologies. This person should not be shy about sharing their ideas and be obsessive...

SpaceXAI’s mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge. Our team is small, highly motivated, and focused on engineering excellence. This organization is for individuals who appreciate challenging themselves and thrive on curiosity. We operate with a flat organizational structure....

About AnthropicAnthropic’s mission is to create reliable, interpretable, and steerable AI systems. We want AI to be safe and beneficial for our users and for society as a whole. Our team is a quickly growing group of committed researchers, engineers, policy experts, and business leaders working together to build beneficial AI systems.About the...

Meta's Security Engineering team is seeking a Security Engineer to help protect billions of users and Meta's global infrastructure from evolving threats. In this role, you will conduct security assessments, vulnerability research, and threat modeling across Meta's products and systems — spanning mobile applications, web platforms, backend services, and...

Who we are At Twilio, we’re shaping the future of communications, all from the comfort of our homes. We deliver innovative solutions to hundreds of thousands of businesses and empower millions of developers worldwide to craft personalized customer experiences.Our dedication to remote-first work, and strong culture of connection and global inclusion...

A UK government agency is seeking a Developer to join the GOV.UK One Login Programme. You'll work in a fast-paced environment with a focus on developing secure, robust digital services for all citizens. The ideal candidate will have experience with cloud technologies, TypeScript or Java, and an understanding of agile methodologies. This role offers a unique...

The Mission : We are building the next generation of intelligence. This isn’t just about calling an API; it’s about engineering the plumbing, the memory, and the reasoning logic that allows AI to navigate complex datasets. You will be responsible for delivering fast, brilliant, and architecturally sound solutions.What You’ll Own: Cognitive...

Who We AreProvenir is the unified Decision Intelligence Platform that gives enterprises full control over end- to-end customer decisioning — to manage risk, drive growth, and transform business outcomes. By consolidating data, AI models, intelligence, agents and governance into a single decisioning environment, Provenir empowers business teams to configure...