126 to 148 of 148 Senior Software Engineer Jobs in Central London

Location: London (3 days a week onsite) | 💰 Up to £80,000 per annum We’re looking for a Senior Backend Engineer to join a high-impact product team shaping the future of travel loyalty experiences. You’ll help design and build scalable backend systems that power a seamless journey for millions of travellers around the world. What You … technical mentorship and contribute to engineering best practices. Advocate for new tools, technologies, and frameworks to drive innovation. What We’re Looking For 5+ years of experience in backend software development with strong CS fundamentals. Proven experience designing and developing APIs and distributed systems. Strong sense of ownership with a focus on performance, reliability, and maintainability. Excellent communication and More ❯

foundation for future service innovation. Integration across diverse technologies ensures Sky's award-winning products remain intuitive, high-quality, and impactful. This role sits within the fast-paced Connectivity Software team, part of Sky Home Communications. We lead development on the RDK WAN Manager and Broadband Application Framework-key components of the open-source RDK-B platform used in … millions of broadband devices worldwide. As a Software Architect , you'll define the software component architecture for our connectivity products, ensuring robust, scalable design. You'll represent Sky in the RDK-B community, support continuous improvement, and collaborate with stakeholders across the business. A proactive mindset and commitment to quality are essential. You'll be part of a … to stay connected and enjoy what they love-anytime, anywhere. What you'll do Attend architecture calls to define user stories and document use cases in JIRA. Define clear software interfaces to external modules and outline end-to-end deployment scenarios. Contribute to feasibility assessments and delivery planning for proposed architectures. Define and document software component architecture to More ❯

foundation for future service innovation. Integration across diverse technologies ensures Sky's award-winning products remain intuitive, high-quality, and impactful. This role sits within the fast-paced Connectivity Software team, part of Sky Home Communications. We lead development on the RDK WAN Manager and Broadband Application Framework-key components of the open-source RDK-B platform used in … millions of broadband devices worldwide. As a Software Architect , you'll define the software component architecture for our connectivity products, ensuring robust, scalable design. You'll represent Sky in the RDK-B community, support continuous improvement, and collaborate with stakeholders across the business. A proactive mindset and commitment to quality are essential. You'll be part of a … to stay connected and enjoy what they love-anytime, anywhere. What you'll do Attend architecture calls to define user stories and document use cases in JIRA. Define clear software interfaces to external modules and outline end-to-end deployment scenarios. Contribute to feasibility assessments and delivery planning for proposed architectures. Define and document software component architecture to More ❯

Software Developer - PHP (Laravel OR Symfony), React, AWS, Node Location - Camden (4 days onsite) Salary - up to £100,000 + Bonus + Stock I’m working with a leading digital gaming company that’s part of a global group listed on the NYSE. They’re passionate about delivering best-in-class products that create thrilling and engaging online experiences … for their customers. They’re looking for a hands-on, detail-oriented Software Developer to join their growing team in Camden. You’ll be working in a fast-paced, collaborative environment focused on building scalable, reliable, and high-performance software that powers real-time user experiences in the iGaming space. This role would suit someone who loves solving More ❯

Backend & Integrations Engineer – Fully Remote – AI-Powered SaaS Client Open to applicants from UK We're looking for a hands-on Backend Engineer to help shape a growing applications engineering function. If you're confident across Python APIs, integrations, and workflow orchestration—and excited by the potential of AI-assisted development—this could be a great fit. You More ❯

Founding Product Engineer | Early-stage AI startup (hire #5) 💰 Up to £150,000 + meaningful early-stage equity % 🏢 Building together 4 days a week onsite in London bloom are working with a Seed stage AI startup on a mission to reinvent one of the world’s most painfully manual workflows, the kind of industry where automation is still in More ❯

Job Description Work within our highly technically diverse multidisciplinary teams (application software, embedded, cloud platform, etc.) Contribute to the core application software by developing enhancements for our existing intra-operative devices, taking ownership of the maintainability and reliability of the application software in our existing intra-operative devices and helping develop the software stack for our … monitoring and cloud connectivity. Investigate, debug, and resolve issues reported from testing and support. Participate in the relevant security and regulatory compliance processes. Develop robust and secure-by-design software fit for a medical-grade system. Must Haves BS/MS in Computer, Electrical, Electronics Engineering or equivalent Current experience in developing high quality, high performing code in modern More ❯

Senior Java Developer – Middle Office Platform (Credit & Rates Trading) Location: London Salary: £120K-£140K + up to 25% Bonus + benefits About the Company This global financial technology firm is renowned for combining cutting-edge engineering with a market-leading trading platform that powers electronic trading across Credit and Rates. Their flagship product is used daily by thousands of … a fast-paced, product-focused culture where engineers have direct impact on scaling systems that sit at the heart of global capital markets. The Role We are seeking a Senior Backend Java Engineer to play a key role in scaling the Middle Office platform of a world-leading electronic trading system. You’ll work on mission-critical backend … high-volume, real-time environment. This is a hands-on leadership role where you’ll mentor other engineers, promote engineering excellence, and act as a point of contact for senior stakeholders. Projects You’ll Work On Scaling a real-time trading platform: Handle vast growth in electronic trading volumes, ensuring throughput and ultra-low latency. Resilience & recoverability: Build fault More ❯

for their Derivatives Trading space. This is a Front Office Development team and you will be working alongside a Quants and Traders for Multi Asset Derivative Products. As the Senior C#.NET (WCF/.WPF) Developer you will join a small and very productive .NET Development team that work on a range of Risk Reporting and Data Capture software for the Bank. You will be working on the company’s bespoke Risk & Performance application for positioning and Fixed Income & OCT Derivatives trading application. As the senior .NET C# developer you will have experience with the Microsoft Stack including JavaScript, TypeScript and React. Any experience with Python Development would also be beneficial. Key Technical Skills: Proven track record More ❯

We are seeking a talented and dynamic Microsoft Copilot Studio Engineer to join our innovative team. This role plays a key part in driving the development and enhancement of Microsoft’s Copilot technology, an essential tool for productivity and creativity. In this role, you’ll use your technical expertise and creative thinking to help advance our ground breaking projects. … features for Microsoft Copilot, ensuring seamless functionality and a smooth user experience. Collaboration: Work closely with cross-functional teams—including product managers, designers, and engineers—to deliver high-quality software solutions. Testing and Debugging: Conduct rigorous testing and debugging to ensure reliability and performance of Copilot features. Innovation: Continuously explore and implement innovative solutions to enhance Copilot’s capabilities. … all developed features and integrations. Support: Provide technical support and guidance to end-users and stakeholders. Required Qualifications Educational Background: Bachelor’s or Master’s degree in Computer Science, Software Engineering, or a related field. Technical Skills: Proficiency in programming languages such as C# , Python , or JavaScript . Experience with Microsoft Azure , AI , and machine learning technologies is highly More ❯

Java Engineer – 6-Month Contract – Hybrid (2 days on site, London) - Day Rate: Up to £650 (Inside IR35) Join a high-performing engineering team working on large-scale, high-availability systems used by millions. This role offers the chance to build and enhance complex backend services in a modern, cloud-native environment. What you’ll be doing: Designing and … experience with Java, Spring Boot, and microservice architecture. Proven background working in cloud environments (ideally AWS). Familiarity with CI/CD pipelines and automation tools. Solid grasp of software testing, TDD, and Agile methodologies. Good communication skills and the ability to work collaboratively in a hybrid setup. Contract Details: Location: London (2 days per week on site) Duration … months, strong potential for extension Rate: Up to £650 per day (Inside IR35) If you’re an experienced Java Engineer keen to join a modern engineering environment and work on systems that operate at scale, please get in touch for more information. More ❯

Duration: 6 months Job Type: Hybrid - office based 2 days per week Job Description: Design, implement, and optimise live streaming capabilities into existing software-based video pipeline Leverage hardware acceleration to develop high-performance, low-latency video capture, processing, AI inference, visualization and streaming software Work as part of a multidisciplinary team to develop robust and secure-by … design software for a medical device Maintain a high level of quality and reliability in submitted code and participate in team code reviews Must Haves Expertise on WebRTC live video streaming development Expertise on software video pipelines (e.g., GStreamer and/or FFmpeg) Excellent C++ development skills with C++11 or higher, multi-threading, inter-process communication and performance More ❯

Our client, a major Quantitative Hedge fund, is looking to hire a skilled Java Software Engineer to help build out the firm's trading systems and tooling. This role allows you to join one of the world's most successful hedge funds, collaborate with an exceptionally talented team operating in a hybrid approach, and earn market-leading compensation More ❯

Ready to build the high-performance logic powering next-generation logistics? Join Reelables and architect the core back-end services that process and serve data for millions of smart labels worldwide! This isn't just back-end development – you're More ❯

Excellent communicator with a self-starter attitude and comfort working autonomously. Demonstrable expertise and understanding of API development/design and experience interfacing with disparate systems. Applicable understanding of software security, common exploits and secure development practices, including the OWASP Top 10. Proven and demonstrable understanding of testing methodologies and frameworks. Commercial experience with AWS and IaC (Terraform/ More ❯

foundations that will define how humans and AI learn from each other — pioneering technology that is set to transform the way intelligent systems evolve. The Role We’re seeking Senior Software Engineers with a product builder mindset to help shape and scale a cutting-edge platform. You’ll work across a modern tech stack (Python, TypeScript, Vue.js, AWS More ❯

health, sport, mobility and food delivery). Interview Flow 📋 A clear, predictable process: intro screen → half-day deep-dive (technical assessment online + peer programming session with our lead engineer) → same-day decision. Apply if this sounds like you 📥 Builders who love shipping, own outcomes, and thrive on clarity of impact will find outsized scope and leverage here. If More ❯

most sought-after hedge funds, founded by a top-performing Portfolio Manager from a leading multi-manager platform, is expanding its Front Office Technology team. They are seeking an engineer to develop advanced technical risk solutions and applications supporting both the Portfolio Managers and the Risk Management function. You would take ownership of the end-to-end development of … Python, including the most recent releases/tooling and supporting libraries Demonstrated experience architecting and building risk tooling and risk management systems. Strong Communication skills, combined with strong fundamental software engineering principals. Why would this interest you? Very high impact role in a scaling Macro Fund with an excellent track record. Hybrid working structure: 3 days in, 2 remote More ❯

Yaspa is an award-winning fintech that connects identity and money to simplify and accelerate the way we pay. Founded in 2017 by a former Worldpay CTO, Yaspa uses open banking to provide instant bank payments that are faster, more More ❯

to-end delivery of new AI initiatives from idea and architecture through to deployment, monitoring, and optimisation. Introduce new tools, frameworks, and best practices that strengthen the team’s software engineering foundations. Contribute to a culture of continuous learning by mentoring engineers and helping shape the team’s technical direction. Ensure the stability and reliability of key AI platforms … through proactive monitoring, maintenance, and occasional on-call support. What You’ll Need Extensive hands-on experience building and scaling AI-powered backend systems (8+ years in software development, 3+ focused on AI or ML engineering). Expert proficiency in Python, with strong working knowledge of ML libraries and frameworks. Solid background in data architecture, with proven experience across More ❯

E-Trading Platform Developer (Contract – London, Hybrid) Day Rate - £550-£600 (Inside IR35) An opportunity for an experienced Java Developer to work on high-performance e-trading systems within Front Office environments. This role focuses on low-latency engineering, JVM More ❯

metadata systems to support a growing analytics platform. Offer technical insight and second/third-line support on complex data issues. What You’ll Need 6+ years of professional software engineering experience. Strong programming background in Python or Go, plus another object-oriented language. Proficiency in SQL (both transactional and analytical use cases). Experience working with data lakes More ❯

Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community is essential in driving our More ❯