senior java software engineer jobs in London

London, United Kingdom | Posted on 29/07/2026 Build software that powers unmanned systems already deployed in the real world. At sees.ai , we’ve developed a system that is already being used to inspect critical national infrastructure — operating in live environments, not simulations. Now, following a major contract with National Grid and recent...

About the job Help prove the ML software stack that future AI systems will depend on. Graphcore is expanding the software systems behind AI compute at datacenter scale. This role focuses on validating a complex machine learning stack before it reaches customers and hardware. You will build the test infrastructure, automation and tooling that engineers trust...

Our client is the digital and intelligence arm of a major defence company. Location(s): UK, Europe & Africa : UK : Gloucester Our client is home to 4,500 digital, cyber and intelligence experts. We work collaboratively across 10 countries to collect, connect and understand complex data, so that governments, nation states, armed forces and commercial...

Hivemind Solutions Division London Hybrid Full-TimeAbout the roleThe Systems Engineer, Autonomy & Software at Shield AI is responsible for solving complex systems engineering challenges associated with the development, integration, and deployment of advanced autonomous systems for defense applications.The ideal candidate has a strong background in software...

All the detailsSenior Software Engineer- Customer SupportAbout M&SMarks & Spencer is transforming how it operates as a digital-first, engineering-led retailer. Our Digital & Tech teams build the services, platforms and experiences used by millions of customers and thousands of colleagues across stores, websites, apps and support functions.We are ambitious...

About usEncord is the universal data layer for AI that helps 300+ AI teams train and run models on the right data. Our platform indexes, curates, annotates, and evaluates data across the full AI lifecycle, from development through production.Trusted by Woven by Toyota, AXA, UiPath, Zipline, and more. We're an ambitious team of 100+ working at the frontier of...

At Speechmatics, we’re expanding our user platform offering. We're looking for a Senior Front-End Software Engineer with a strong product mindset to help drive that growth. This is an opportunity to own end-to-end feature development at a leading-edge AI company, from shaping the user experience through to shipping and iterating based on real user feedback...

the company empowers data teams to bring mission-critical software, analytics, and AI to life and is the company behind Astro, the industry-leading unified DataOps platform powered by Apache Airflow®. Astro accelerates building reliable data products that unlock insights, unleash AI value, and powers data-driven applications. Trusted by more than 800 of the...

Careers that change lives start here. Medtronic is a global leader in healthcare technology with a Mission to alleviate pain, restore health, and extend life. Our 95,000 employees work across more than 150 countries to put patients first — developing innovative medical technologies that improve the lives of 72+ million patients each year. Your unique...

Ebury helps ambitious businesses unlock global growth, and we take the same approach with our people. We encourage innovation and movement, collaboration and problem-solving, and foster an environment where everyone can feel they belong, are valued, supported and empowered to succeed.If you’re a collaborator who wants to help transform how businesses...

Building the Future of Open Finance Payward - the parent company behind Kraken, NinjaTrader, Breakout, xStocks, Payward Services and CF Benchmarks - has spent the last 15 years building one of the most modern and globally accessible financial infrastructure platforms in the industry, built to advance an open, global financial system. Before you apply, we...

Senior Software Engineer, Training & Experimentation London, England, United Kingdom; New York, New York, United States; San Francisco, California, United States Who We Are Lightning AI is the company behind PyTorch Lightning. Founded in 2019, we build an end-to-end platform for developing, training, and deploying AI systems—designed to take ideas from...

Our vision is to give everyone the belief they can make their move. We aim to make moving simpler, by giving everyone the best place to turn to and return to for access to the tools, expertise, trust, and belief to make it happen. We’re home to the UK’s largest choice of properties and are the go‑to destination for millions of people planning their...

Job Type PermanentWork Pattern Full-timeWork Location On-siteSeniority SeniorEducation DegreeSecurity Clearance RequiredPosted 23 Apr 2026 (5 months ago) Benefits Pension Private healthcare About The AI Security Institute The AI Security Institute is the world's largest and best-funded team dedicated to understanding advanced AI risks and translating that...

the company is where designers, animators, and developers build interactive experiences. Design, animate, and code in one place. What you build in the editor is what ships in your app, game, or website. No mockups, no prototypes, no handoff. The real thing. With the company, designers and developers work with the same tools. No silos. What you see in the...

About The RoleOne of the world’s leading fintech firms is expanding their London headcount and is looking for highly Agile Java Engineers to join their group. They are looking for people of varying seniorities to join their Agile squad and drive best practices such as TDD, BDD, and pair programming. This firm is exceptionally tech-driven and has recently...

Careers that change lives start here. Medtronic is a global leader in healthcare technology with a Mission to alleviate pain, restore health, and extend life. Our 95,000 employees work across more than 150 countries to put patients first — developing innovative medical technologies that improve the lives of 72+ million patients each year. Your unique...

Why loveholidays? We’re on a mission to open the world to everyone, giving our customers unlimited choice, unmatched ease and unmissable value for their next getaway. Our trailblaze together culture is what drives our success, powered by our people and the way they work. Using progressive technology, we drive cutting-edge innovation and improve how our...

We’re looking for a talented, high-quality full-stack engineer to join our team We care about how well you build software, how you work within a team, and how fast you learn. Runna’s stack and problems will keep changing as we grow, so we’re looking for strong engineers who pick up new systems quickly and bring good judgement wherever they land, not a...

Senior Software Engineer – Distributed Systems Contract Inside IR35| Financial Services | London based ( 3 days onsite in London) We're looking for an experienced Software Engineer to join the team responsible for the continued development, scaling and operation of a high-performance computing (HPC) platform. You'll play a key role in designing and...