senior java software engineer jobs in London

At Gigaton, we’re on a mission to cut gigatonnes of carbon emissions from the world’s biggest emitting industries (like cement, steel and glass), by building autonomous AI control and optimisation systems that learn and leverage the physics of manufacturing. Our products run heavy industrial plants more efficiently, more stably, and with lower emissions...

Build the customer online ordering experience, the web application customers use every day to order for delivery, click-and-collect and order-at-table, and help steer where it goes next. As a Senior Software Engineer, you'll be one of the most experienced engineers on the team. You'll work in React and our design language, and on the server and the services...

Company Overview Metrea delivers effects-as-a-service to national security partners across five domains and more than a dozen mission areas. These include airborne ISR, electronic warfare, secure communications, aerial refueling, special air missions, aerial firefighting, and advanced simulation. We own the whole stack: designing, building, and operating...

Senior Software EngineerPush Gaming is a dynamic and innovative game development studio specialising in creating top-quality, mobile-optimised online casino games. With a passion for gaming and a commitment to pushing boundaries, we are dedicated to delivering exceptional experiences to players worldwide.We are looking to hire an experienced engineer to...

End DateFriday 13 November 2026Salary Range£84,624 - £126,936We support flexible working – click here for more information on flexible working optionsFlexible Working OptionsHybrid Working, Job ShareJob Description Summary.Job DescriptionJOB TITLE: Senior Software EngineerSALARY: £84,624-£105,780LOCATION(S): LondonHOURS: Full-timeWORKING PATTERN: Our...

Company Overview Metrea delivers effects-as-a-service to national security partners across five domains and more than a dozen mission areas. These include airborne ISR, electronic warfare, secure communications, aerial refueling, special air missions, aerial firefighting, and advanced simulation. We own the whole stack: designing, building, and operating...

Catapult is building the future of sports performance technology, with a mission to Unleash the Potential of every athlete and team on earth. We don't just work in the sporting industry; we are actively changing it. Since 2006, our solutions have been leading the way in sports performance software, science, and data, in a world where 1% can literally mean...

Senior Software Engineer LCP Delta is working to enable the energy transition through a variety of offerings. One of these offerings is the tech enablement of vast datasets to inform key decision makers on energy market trends and to provide valuable insights. We have developed a suite of technology products through our Enact and Spark platforms, from...

Senior Software EngineerLocation: London, UK (Canary Wharf) Duration: Sep 2026 – June 2027 On-site Expectation: Up to 5 days per week in officeBrief about the Team & Fractal: Fractal Analytics is Leading Fortune 500 companies leverage Big Data, analytics, and technology to drive smarter, faster and more accurate decisions in every aspect of their business....

Remote | Central London office (few trips a year) We’re working with a growing technology business looking to hire an experienced Senior C# Software Engineer to join its software engineering team. This is a hands-on development role for someone with strong commercial software engineering experience in C#/.NET, with experience building cloud-native,...

Senior Software Engineer - AI Start-up - London - In-Office - Up to £200k Base + Equity We’re supporting a category‑leading AI organisation building next‑generation conversational agents used by major global brands. Their platform powers intelligent, human‑like interactions across chat, email and voice, resolving millions of customer queries in real...

Made Tech is on a mission to use technology to improve society - for everyone. We help public sector organisations transform, deliver and manage world-class digital products and cloud services. We work with the UK government to modernise legacy technology and shape the digital future of the country. We support local government teams in building accessible...

Senior Software Developer – Advanced Security & Platform InternalsWe are seeking an experienced software developer to collaborate closely with a team of vulnerability researchers, tackling complex technical challenges that have real‑world impact.Our research group investigates security weaknesses across a wide range of technologies—from mobile devices...

The Opportunity Join 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...

Senior Software Engineer | Series A Cybersecurity Start-Up | LondonSenior Software Engineer required to join a fast-growing Series A cybersecurity start-up in London, tackling some of the most difficult problems in modern security. The company has been built by experienced founders with a proven track record of building and scaling successful cybersecurity...

Salary up to: CompetitiveSenior Platform EngineerDeveloper Experience TeamLondon / Hybrid | Senior levelShape the platform that helps engineering teams across Nando’s deliver with confidence. As a Senior Platform Engineer in our Developer Experience team, you’ll lead complex technical improvements, stay close to the code and make it easier for teams to...

Direct message the job poster from Net TalentCEO and founder of Net Talent and People TalentExecutive Search, IT, Data, AI, Digital, and HR Recruiter, Talent Partner, CIPD/AssociateSenior Software EngineerBased anywhere in the UKFully Remote, excellent package, and incredible opportunityAre you the kind of engineer who cares just as much about the why as the...

Join to apply for the Senior Software Engineer role at Lloyds Banking Group This range is provided by Lloyds Banking Group. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range JOB TITLE: Senior Software Engineer LOCATION(S): London HOURS: Full-time WORKING PATTERN: Our work style is hybrid,...

OverviewLead Talent Consultant at Addition+, helping shape the next generation of Military Defence capabilities! (Engineering and Technology)Role: Senior Software Engineer (Python - FastAPI)Location: London (hybrid)Package: Competitive salary + bonus + benefitsIndustry: AI, Data Science & Technology ConsultingSecurity Clearance: Applicants Must have Active...

Why Faculty?We established Faculty in 2014 because we thought that AI would be the most important technology of our time. Since then, we’ve worked with over 350 global customers to transform their performance through human‑centric AI. You can read about our real‑world impact here.We don’t chase hype cycles. We innovate, build and deploy responsible...