senior java backend developer jobs in London

About the company: Apexon is a digital-first technology services firm specializing in accelerating business transformation and delivering human-centric digital experiences. We have been meeting customers wherever they are in the digital lifecycle and helping them outperform their competition through speed and innovation Apexon brings together distinct core...

Senior Software Engineer II - Contacts Team - Java Full-time Compensation: GBP 105,000 - GBP 130,000 - yearly 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...

The Data Center Builder Tools team is looking for a seasoned, self-directed Senior Software Development Engineer to lead the design and evolution of the real-time middleware and controls platform that powers industrial control systems across AWS Data Centers worldwide. Contribute to Amazon's vision of developing the safest, most secure, reliable, and...

Senior Software Engineer, Backend Develop and deploy a cloud-native backend platform coordinating 5G NTN and Direct-to-Cell services Location: London, England About The Role Aalyria Backend Software Engineer Aalyria is a leading technology company that supplies laser communications technology and temporospatial software-defined networking platforms to the...

Waracle are looking for a Senior Mobile SecurityDeveloper (Inside IR35) for an exciting new 6-month initial contract joining our world-class digital technology consultancy, home to a diverse, smart, curious and ambitious community of specialists in technology-driven transformation. We work with ambitious clients to help them solve their biggest business and...

Senior Java Software Engineer OpportunityA Senior Java Software Engineer opportunity in a growing team who are upgrading and modernising their tech stack. The business is well established across the UK and the team require experienced software engineers who can demonstrate strong Java and Spring backgrounds.The role offers a hybrid working structure (two...

Company DescriptionAt ANDigital there’s a buzz. It’s the buzz of brilliant, curious people set free to imagine the impossible. A hubbub of ‘what ifs?’, ‘why nots?’ and ‘let’s trys’ all working together to push boundaries and create the future of digital.Job DescriptionANDigital is a new way for digital delivery.We are growing fast and...

We're seeking a Senior Software Engineer to join a major transformation programme within Prime Finance Equities, helping modernise a suite of front-to-back trading and post-trade platforms. This is an opportunity to work on highly distributed, event-driven systems that underpin a global equities business, while influencing the future architecture of a...

Senior Flutter Engineer Full-time Inside IR35 Hybrid 1 office day London Farringdon office address: 47-53 Charterhouse St, London, EC1M 6PB Join a dynamic energy provider dedicated to sustainable solutions in the UK. We are seeking an experienced Senior Flutter Engineer to join a fast-paced development team delivering high-quality mobile applications....

Snowrelic Inc is looking for a Java Backend Engineer to join their technology team in London. This full-time position requires expertise in Java and Spring Boot, along with experience in microservices architecture and cloud technologies.The ideal candidate will be responsible for developing scalable backend applications and engaging in best practices thanks...

What’s Yonder? “It's as if Time Out, Amex and Monzo had a baby” - Will T, Yonder Member Yonder combines credit and debit in one membership that’s fair, flexible and actually enjoyable. No jargon. No dusty points system. Just rewards that actually feel rewarding, from bao to beer to a boarding pass. The engineering team sits at the heart of the...

Full Stack Engineer (ML Ops)London, UK FinTech · Banking · FinanceSkills & ExperienceJob roles: Full Stack Experience level: Mid, Senior Core skills considered: Java, React, Redux, AWS, JavaScriptLogisticsBase salary: £70K - £110KEmployment type: PermanentRemote working: Hybrid (up to 2 remote days per week)Visa sponsorship: Not availableJob...

Aalyria is a leading technology company that supplies laser communications technology and temporospatial software-defined networking platforms to the aerospace industry. With technology acquired from Google, Aalyria is at the forefront of innovation in satellite and airborne mesh networks, as well as cislunar and deep-space communications. We are...

Personio's intelligent HR platform helps small and medium-sized organizations unlock the power of people by making complicated, time-consuming tasks simple and efficient. Our team of 1,500 Personios is building user-friendly products that delight our 15,000+ customers and their 1.5 million employees. Ready to make an impact from day one? Senior Software...

About ExTracExTrac is a decision intelligence company used by governments, defence organisations, financial institutions, and corporates operating in complex, fast-moving environments. Our capabilities fuse curated data sources, domain-specific AI, and deep human expertise to transform information overload into clear, actionable foresight.Our ambition is to...

Senior Backend Engineer (Ruby) Role type - Permanent Location - London (Hybrid) About Zuno Zuno is the cutting-edge technology platform powering the success of home heating and cooling experts, BOXT. Zuno is scaling for significant growth by continually developing its proprietary tech stack to empower both our installers and the homeowners of brands such as...

About FreetradeFreetrade’s mission is to become the default place to invest. Investing has been too complicated and expensive for too long, keeping millions from making the most of their savings.We’re changing that.We’re building our team and looking for people who are excited to reshape how our customers invest and grow their wealth. If you’re...

**Senior Quant Developer - OTC - Liquidity - Digital Assets** Excellent opportunity opens for a highly quantitative **Senior Quant Developer** (QD) to join a leading Firm's **OTC Pricing team.** This role sits at the critical intersection of Quantitative Research (QR) and production engineering. You will be a "proper" QD—collaborating directly on the...

Citi London is seeking a Senior Blockchain Engineer to join the Digital Assets Platform. You will build backend enterprise web applications using Java and spring, with a focus on web3 and CIDAP.You will collaborate across global teams and contribute to scalable, secure software in production. Ideal candidates have strong backend skills, familiarity with web3...

Opus Recruitment Solutions Limited in London is seeking a Senior Product Engineer to join a growing AI-powered insurance startup. You will be responsible for backend development using TypeScript and Node across the full software lifecycle, with two in-office days per week in Central London.The role offers a chance to make a real impact as the product expands...