senior java software engineer jobs in London

Senior KDB+ / q Software Engineer Prime Brokerage Risk & Margining | Inside IR35 | £730 per day (Umbrella) | London Hybrid We're currently looking for an experienced Senior KDB+ / q Software Engineer to join a leading financial services organisation on an initial 13-week contract. This role will suit a hands-on engineer with deep expertise in KDB+/q...

Nottingham Trent House (95002), United Kingdom, Nottingham, NottinghamshireSenior Software Development Engineer - Amazon ConnectJob Title: Senior Software Development Engineer - Amazon ConnectRead on to fully understand what this job requires in terms of skills and experience If you are a good match, make an application.Location: Nottingham - HybridWorking...

Why Sony Interactive Entertainment?Sony Interactive Entertainment isn’t just the Best Place to Play — it’s also the Best Place to Work. Sony Interactive Entertainment (SIE) is the company behind the PlayStation brand. As a subsidiary of Sony Group Corporation, we’re part of a proud legacy of innovation and excellence. SIE is a dynamic technology...

Company Description We’re Checkout.com. You might not know our name, but companies like eBay, Spotify, Klarna, Uber, and Sony do, because we’re behind many of the digital experiences you use every day. We are where the world checks out, enabling over 10 billion transactions yearly for more than one billion global shoppers. Whether you want to book a...

Senior Staff Software Engineer, Time EngineeringGusto 08 August 2025Join Gusto as a Senior Staff Software Engineer (Backend) on the Time engineering team and help shape the future of time management for businesses. You'll design, build, and scale high-performance APIs that power time tracking and payroll integrations, impacting millions of...

Full-timeCompensation: GBP 111,000 - GBP 145,000 - yearlyCompany DescriptionWise 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...

We are working with a well‑established UK engineering business that designs and delivers complex, real‑world software systems used in safety‑critical environments. This is a senior‑level role for an experienced C++ engineer who enjoys owning work from early design through to delivery and verification, and who values engineering rigour over quick...

Deducta Senior Software Engineer - Backend Location: London, UK, near London Bridge. Hybrid, 2 in-person days a week. Compensation: £120k base salary plus equity Visa Sponsorship: Available for the right candidate Start Date: As soon as possible Why we exist Every decision a business makes, from the suppliers it trusts to the risks it accepts, eventually...

Are you passionate about building secure, scalable software and cloud infrastructure that supports critical services in production?Do you enjoy collaborating across teams, improving engineering practices, and helping others grow while delivering high-quality solutions? About our Team Working within Information Security & Data Protection division, the...

As a Lead Software Engineer at JPMorganChase within Digital Markets Execution Technology, Execute, you are an integral part of an agile team that works to enhance, build, and deliver trusted market-leading technology products in a secure, stable, and scalable way. As a core technical contributor, you are responsible for conducting critical technology...

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...

About Octopus Electroverse We’re making electric vehicle ownership as smart and as simple as possible, by building the giant, virtual charging platform of the future. In just five years, Octopus Electroverse has grown to become one of the largest eMobility players globally, with over 1,400,000 connected electric vehicle chargers and a customer ecosystem...

SoundCloud empowers artists and fans to connect and share through music. Founded in 2007, SoundCloud is an artist-first platform empowering artists to build and grow their careers by providing them with the most progressive tools, services, and resources. With over 400+ million tracks from 40 million artists, the future of music is SoundCloud. SoundCloud is...

About Us At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without...

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...

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...

Senior AI Native Software Engineer - ProductsLocation: LondonSalary: Competitive salary package depending on experienceCareer Level: Accenture will be recruiting at the following levels:Associate Director & Senior Manager)Accenture is a leading global professional services company, providing a broad range of services in strategy and consulting, interactive,...

Senior Software Engineer, Agent Endpoint DLP -office based 4 days per week in Moorgate, London Join Fortinet, a global cybersecurity pioneer with over two decades of excellence, as we continue to shape the future of cybersecurity and redefine the intersection of networking and security. At Fortinet, our mission is to safeguard people, devices, and data...

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...

Senior Software Engineer, Agent Endpoint DLP -office based 4 days per week in Moorgate, London Join Fortinet, a global cybersecurity pioneer with over two decades of excellence, as we continue to shape the future of cybersecurity and redefine the intersection of networking and security. At Fortinet, our mission is to safeguard people, devices, and data...