senior software engineer- java jobs in London

About the job Build the software that validates Graphcore’s machine learning stack, from frameworks to AI accelerator hardware. You’ll design production-quality test infrastructure that engineers can extend, maintain and rely on as Graphcore’s ML software grows. Your work will help teams deliver reliable products, with clear evidence of numerical...

About Thunes: Thunes is the Smart Superhighway to move money around the world. Thunes’ proprietary Direct Global Network allows Members to make payments in real-time in over 140 countries and more than 90 currencies. Thunes’ Network connects directly to over 12 billion mobile wallets, stablecoin wallets and bank accounts worldwide, as well as 15 billion...

Location: London-based hybrid (Red Badger HQ, client sites and remote)Engagement: Full-time, project-embedded consultingThe RoleWe are looking for a Senior Software Engineer in Test (SET) to join Red Badger’s high-performing engineering teams. In this role, you’ll define and drive quality strategy for platform and infrastructure-level products — from...

Senior Software Engineer, Data & Platform Every new customer adds 1,000 career pages to crawl daily, scaling to 1.5M a day by Series A. We’re fixing a Google-scale problem, pointed at Staffing & Recruitment. Backed at seed by Reed, the £1BN UK Recruitment group. We need someone who loves building from an early stage and can lead the team that follows. The...

Here’s a summary of the role: Build software that matters, take real technical ownership, and use modern AI tooling to do your best work. This is a hands-on senior engineering role for someone who enjoys solving complex product problems, shaping robust solutions, and helping teams deliver reliable services at scale. You’ll work on secure, scalable...

Astronomer 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...

Software is eating the world, but AI is eating software. We live in unprecedented times - AI has the potential to exponentially augment human intelligence. Every person will have a personal tutor, coach, assistant, personal shopper, travel guide, and therapist throughout life. As the world adjusts to this new reality, leading platform companies are...

Full Stack Java Spring Software Engineer 100,000 Plus Bens Quant Capital is urgently looking for a Java Software Engineer for our high profile investment management vendor.Hit Apply below to send your application for consideration Ensure that your CV is up to date, and that you have read the job specs first.Our client is a well known global wealth management...

The 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. This role sits at the intersection of systems engineering, software engineering, and autonomy. The Systems Engineer works...

In Bloomberg, the Developer Experience (DevX) group provides services and tooling that empower over 9,000 engineers with their productivity needs and enable them to write high-quality, performant, and secure code. What goes into making Bloomberg’s software? Where do these components come from? How will we know if any are defective? How can we protect...

Hybrid working based at one of our offices in London, Bath or Edinburgh. Your contract will be hybrid, although we don’t currently require a set number of office days. We support flexible working and trust teams to agree how and where they work best, taking a pragmatic approach based on the needs of the role and team. About usSeccl is the Octopus-owned...

Senior Software Engineer - Research Technology Senior Software Engineer - Research Technology Job Location London Employment type Regular Department Technology Targeted Start Date Immediate DRW is a diversified trading firm with over 3 decades of experience bringing sophisticated technology and exceptional people together to operate in markets around the...

CoreWeave is The Essential Cloud for AI. Built for pioneers by pioneers, CoreWeave delivers a platform of technology, tools, and teams that enables innovators to build and scale AI with confidence. Trusted by leading AI labs, startups, and global enterprises, CoreWeave combines superior infrastructure performance with deep technical expertise to accelerate...

At Ledgy, we’re on a mission to make Europe a powerhouse of entrepreneurship by building a modern, tech-driven equity management and financial reporting platform for private and public companies. In 2026, we aim to be the leading provider for European IPOs and reporting for share-based payments. We are a value-based company with a core focus on being...

Addons.mozilla.org (AMO) is the foundation of the Firefox add-ons ecosystem. It’s a showcase for developers to publish and grow their extensions, and a place of discovery for millions of users who customize Firefox to make it their own. Behind the scenes are the DevHub which enables developers to manage their extensions. To manage the ecosystem there are...

P-1127 At Databricks, we are obsessed with enabling data teams to solve the world's toughest problems, from security threat detection to cancer drug development. We do this by building and running the world's best data and AI infrastructure platform, so our customers can focus on the high value challenges that are central to their own missions. Our...

Salary: £55,000 - 95,000 per year Requirements: Significant experience designing, building, or operating distributed databases or production infrastructure at scale. Deep expertise in at least one of these areas, with an interest in working across the broader stack: Vitess or a comparable sharded SQL system; MySQL server internals; or MyRocks, RocksDB, or...

The roleWe're looking for a Senior Software Engineer to join Wayve's Data and Orchestration team in London, working on the platforms that power our data engineering, orchestration and inference workflows at scale. This team builds the infrastructure that enables partner teams to ingest, process and transform high-volume data from external vendors, vehicle...

Senior Software Engineer – Research Platform A leading quantitative investment firm is building out the research platform that powers how its quantitative researchers develop, test and ultimately deploy new trading strategies. The engineering goal is to make that research loop faster, more accurate and more scalable: enabling researchers to run more...

A highly successful, technology-enabled financial services business is seeking a Senior Full-Stack Engineer to help shape the next generation of its internal systems, automation capabilities and AI-enabled workflows. This is an opportunity to join a growing technology team at a business where software directly influences operational performance, decision...