senior java developer jobs in London

Senior Software Developer Location:RNAS Yeovilton, Somerset Salary:£50,000 - £65,000 Working Pattern:Full-time, On-site (Monday to Thursday 08:30-17:00, Friday 08:30-15:00) Looking for a role where your software expertise directly supports NATO Electronic Warfare training capabilities? At MASS, we help our customers make better decisions in critical...

Your role What you’ll be doing Senior Software Developer What We Need Corpay is currently looking to hire a Senior Software Developer within our Cross-Border division. This position falls under our Corporate Payments line of business and is located in London. In this role, you will help evolve the platforms that power Corpay Cross-Border’s international...

Waracle are looking for a Senior Developer for an exciting new role joining our world-class digital technology consultancy and 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 customer challenges. We help our clients to...

Company Overview: Team Creation Limited is a fast-growing software development company operating across Asia and Europe. We provide services including market research, artificial intelligence solutions, cloud computing, and mobile application development for a broad range of international clients. Our focus is on delivering innovative and high-quality...

Organisation London Sport Salary 47277 Location 2 plus days per week in our central London office Contract type Fixed Term (Full time) Closing date 15 November 2026 Interview date 26 November 2026 Job Description We’re looking for a Senior Development Manager to lead the work of London Sport in delivering the Place Expansion programme in Enfield, as part...

We are looking for a Senior / Lead Kotlin Engineer to join a critical initiative reengineering core trading and post‑trade platforms. You will focus on modernizing large‑scale legacy components into high‑performance, event‑driven, cloud‑native services using Java and Kotlin, all while maintaining absolute stability on a live, financially...

Ada Infrastructure is a global data center business committed to being a positive force for technology, people, and the planet. As part of the digital infrastructure platform of Ares Management Corporation (NYSE:ARES), a leading global alternative investment manager, Ada Infrastructure is positioned to be a leader in the industry in reliable, safe, secure,...

Senior KDB+/q DeveloperQbyte Computing Limited is a London-based Software-as-a-Service company working at the intersection of technology and financial markets. Alongside our own products, we partner with leading banks, hedge funds, trading firms and digital-asset businesses.The opportunityWe are looking for a Senior KDB+/q Developer to design, build and...

Job Description Over the last 20 years, Ares’ success has been driven by our people and our culture. Today, our team is guided by our core values – Collaborative, Responsible, Entrepreneurial, Self-Aware, Trustworthy – and our purpose to be a catalyst for shared prosperity and a better future. Through our recruitment, career development and...

Senior Ruby on Rails Developer (£90,000 - £110,000)Central London | Hybrid | 3 daysI’m working on multiple Ruby on Rails opportunities with a growing technology business that is going through a really interesting stage of its engineering journey.They’re bringing engineering fully in-house and building a permanent team from the ground up.The existing...

About us Appnovation is the AI Product Company. Headquartered in Vancouver, Canada, with teams around the world, Appnovation builds AI products, delivers enterprise AI and digital solutions, and co-invests with clients to bring new AI products to market. Open source has been the foundation of Appnovation's work since 2007, and it remains the foundation...

Senior Python Engineer | Infrastructure Automation Southampton, Hampshire Hybrid, 2 days a week onsite £75k plus 8% bonus, 10% pension, private healthcare 5+ years commercial experience with Python We're recruiting for a Senior Python Engineer to join a global AI & SaaS specialist. This is an opportunity to work on complex platform engineering challenges...

Senior Software Engineer with AI We're recruiting for a sustainability business investing in its next generation of digital products. They're looking for a talented Senior Developer who combines strong development skills with practical experience of AI-assisted coding, generative AI and intelligent automation. What you'll get involved in Build cloud...

Interview date: w/c 7 December 2026 (may be subject to change) OPDC Old Oak and Park Royal Development Corporation (OPDC) is a Mayoral Development Corporation with planning, delivery, and compulsory purchase powers and a remit to deliver regeneration in its area. Old Oak is OPDC’s core regeneration project located in an area with a rich, cultural heritage...

Job Overview Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to...

The Senior Development Engineer will be a key contributor to the generation of Verification test evidence demonstrating compliance to our customer requirements. The Senior Development Engineer is responsible for the planning and execution of readiness activities and Qualification testing through strong technical knowledge and excellent organisational...

Waracle are looking for a Senior Developer for an exciting new role joining our world-class digital technology consultancy and 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 customer challenges. We help our clients to...

Location: London, UKEmployment Type: Permanent / Contract (depending on engagement)Company: TalanHybrid Working: 3 Days Per Week onsiteAbout the RoleTalan is seeking an experienced Senior KDB+ Developer to join a high-performing front-office technology team supporting Fixed Income electronic and algorithmic trading activities in London.You will work closely...

As an employee of our company, you willcollaborate with each department to create and deploy disruptive products.Come work at a growing company that offers great benefits with opportunities to moving forward and learn alongside accomplished leaders. We're seeking an experienced and outstanding member of staff. This position is bothcreative and rigorousby...

To design, develop and improve software, utilising various engineering methodologies, that provides business, platform, and technology capabilities for our customers and colleagues.AccountabilitiesDevelopment and delivery of high-quality software solutions by using industry aligned programming languages, frameworks, and tools. Ensuring that code is scalable,...