101 to 125 of 143 Software Engineer Jobs in the City of London

partnering exclusively with one of London’s most prestigious trading powerhouses to hire a standout Front-End Software Engineer — someone who lives and breathes elegant UI engineering and wants to build products that matter at millisecond scale. This is your chance to work at the core of high ...

strong track record and a research-driven culture, they continue to scale aggressively across trading and technology. They are now looking for a Software Engineer to join a high-impact derivatives team responsible for the accuracy, automation and reliability of all futures and options lifecycle processes across ...

trajectory is ambitious, from zero to seven figures in recurring revenue within its first year and this is only the beginning. As a Software Engineer, you’ll join a small, high calibre team where ownership is everything. You’ll work primarily on the backend, integrating with LLMs … next tech unicorn, together, in the same room, ask the big players. What you’ll need to succeed: Strong experience building production quality software (Java, TypeScript, or Python) Curiosity and adaptabilit y: you learn new technologies quickly and apply them effectively Hunger and drive: you’re comfortable working ...

have a current opportunity for a GenAI Software Engineer/Data Scientist on a contract basis candidates mustbe SC Cleared. The position will be based in London. For further information about this position please apply. Please click here to find out more about our Key Information Documents. Please ...

Java Engineer – 6-Month Contract – Hybrid (2 days on site, London) - Day Rate: Up to £700 (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 … 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. If you’re an experienced Java Engineer ...

Senior Engineer (Product) – Up to £150,000 + Strong Equity + Bonus – London 1 day a week - Sponsorship Offered The Opportunity: Join one of the UK’s most exciting and well-funded GenAI startups. This is an opportunity to be an Engineer working in a collaborative, growth driven … pace. Skills/Experience: • Strong backend engineering skills with a history of shipping customer-facing features • Solid engineering experience and strong fundamentals in modern software engineering • Experience working in fast-paced, high-growth or product-led environments • Strong API design and systems architecture skills • Familiarity with AI coding assistants ...

Build Circle is a progressive technology consultancy partnering with scale-ups, SMEs and enterprise organisations to enhance business value, speed and quality. As product-led consultants, we draw on real-world experience in scaling hypergrowth ...

Senior Java Engineer Location: London (x3 days a week onsite) Salary: Up to £80k DOE Type: Perm Job Description We are looking for a passionate Senior Java Engineer in London to lead the design and development of core product features and services that power an app used … thousands of travellers on a daily basis. As a Senior Java Engineer for an loyalty program team, you will have the opportunity to make a massive impact on traveller's behaviour and booking experience. Specifically, you’ll be responsible for driving improvements to loyalty offerings that enable millions ...

Senior Java Developer - Java, Springboot & AWS – paying up to £650/day (Inside IR35) – Hybrid (2x a week - London) – 6 month contract Our client is seeking a Senior Java Developer who is passionate about clean ...

Senior Full Stack Engineer (React, Typescript, Node, AWS) HealthTech, up to £90k London (once or twice per fortnight in office) Troi Search are delighted to be partnering once again with this innovative & mission driven HealthTech client. We’re now looking for a Senior Full Stack Engineer who enjoys … engineering standards Experiment with emerging tech like AI, computer vision, and advanced analytics What we’re looking for 5+ years building SaaS or enterprise software Strong experience with React, Typescript, Node & AWS Technologies Solid cloud and DevOps knowledge Comfort working in data-sensitive or regulated environments A pragmatic mindset ...

Staff Golang Engineer (Contract – Pharma/Life Sciences) - up to £750 per day, outside IR35 Location: 3 days a week in the office in London, 2 days WFH Contract Type: 6 months (with potential to extend) Day Rate: up to £750 per day, outside IR35 About the Role … client within the Life Sciences industry is seeking 3 x experienced Staff Golang Engineer to join our engineering team on a contract basis. You’ll play a key role in building databases from scratch and creating platforms like Kafka. Being hands-on within a team delivering projects and solving ...

Overview We are seeking an experienced Senior Java Developer to join our fast-growing consultancy team of 300+ professionals. This role blends advanced technical expertise with strong communication, stakeholder management, and leadership skills. You will ...

supports customers in two ways: first, by accelerating frontier research with high-quality data, advanced training pipelines, plus top AI researchers who specialize in software engineering, logical reasoning, STEM, multilinguality, multimodality, and agents; and second, by applying that expertise to help enterprises transform AI from proof of concept into … proprietary intelligence with systems that perform reliably, deliver measurable impact, and drive lasting results on the P&L. Project Overview: As a Software Engineering evaluator, you will create cutting-edge datasets for training, benchmarking, and advancing large language models, collaborating closely with researchers. This includes curating code examples, providing ...

client is a fast-growing technical consultancy known for delivering bespoke software engineering on complex, high-impact programmes across the UK public sector. Their culture is flat, collaborative, and delivery-focused. Engineers are trusted to make informed decisions, work closely with stakeholders, and develop solutions from concept to production. … Azure, Docker, CI/CD) Hybrid working, with on-site collaboration when it adds value. 🏡 You’ll likely be a mid-level full stack engineer who: Has strong commercial experience with Java and modern frameworks Is comfortable being client-facing and explaining technical decisions Enjoys working across backend ...

Senior Java Developer – London (Hybrid: 2 Days Onsite) We’re partnering with a leading global organisation that is scaling its engineering function and looking for a Senior Java Developer to join their London team. If ...

London – Hybrid, £90,000–£100,000 plus bonus What do you want the next entry on your CV to say? Imagine for a moment that it said, Solution Architect and that you had worked with ...

Senior Product Engineer - London | Full-time | Hybrid Are you ready to build technology that makes a real-world impact? Join a fast-growing, mission-driven tech company tackling complex social challenges with cutting-edge AI and a passionate team. About the Role: We’re looking for experienced product engineers … with Ruby on Rails, Turbo, AlpineJS, TailwindCSS, AWS, PostgreSQL Experience integrating with LLMs like OpenAI and Claude Strong understanding of scalable architecture and pragmatic software design Comfortable working in cross-functional teams with PMs, UX, and data specialists A product-first mindset with a focus on customer outcomes Passion ...

Full Stack Engineer – New Launch Hedge Fund (L/S Equity) Location: London Type: Full-time (5 days per week on-site in Victoria) A newly launched fundamentally driven long/short equity hedge fund, focused on the European Industrials sector, is seeking a talented Engineer to join … based backend services and APIs. Optimise application performance for large datasets, leveraging efficient data manipulation and visualisation techniques. Qualifications: 1–7 years of professional software engineering experience. Strong academic background from a leading university. Deep experience with modern JavaScript frameworks (React preferred), TypeScript, and data visualisation tools. Proficiency ...

/11, AWS, Pipeline, Financial domain, Spark. JD: Java Tech Lead job involves leading and mentoring a Java development team, analyzing and designing software solutions, ensuring adherence to best practices and coding standards, and collaborating with product managers and other stakeholders to deliver high-quality products for the financial … Oversee Java development projects from conception to completion, ensuring alignment with project requirements and timelines. • Technical Expertise: Design, develop, test, debug, implement, and maintain software applications using core Java technologies. • Quality Assurance: Ensure high-quality code through code reviews, adherence to coding standards, and implementation of best practices. • Collaboration ...

Role: Senior Product Engineer Location: London, Hybrid (Come to the office when needed not set days) Compensation: Up to £140,000 + equity We’re partnered with a fast-growing technology company building world-class API products that simplify complex operational challenges for global businesses. They prioritise engineering excellence … lean teams, and a culture built on ownership, collaboration, and continuous improvement. As a Senior Product Engineer, you’ll work across the full product lifecycle; from understanding customer problems to designing, building, and operating scalable, reliable API products used by companies around the world. You’ll help shape technical ...

looking for Software Engineers to join our partner company! You will play a key role in building next-generation infrastructure and AI systems that accelerate innovation across industries such as aerospace, healthcare, and energy — fields still limited by outdated, manual processes. This is not a traditional engineering role. … execution, ownership, and learning, where speed and quality go hand in hand. Who You Are Minimum 2 years of professional experience as a Software, Backend, or AI Engineer. Proven track record of building and shipping production-ready systems. Hands-on experience with distributed systems, APIs, databases, and cloud infrastructure. ...

Lead Principal Engineer (Management) - Central London - 3 days a week onsite 🚀 Early-Stage Startup | 🧠 Safety-Critical Systems Want to become a CTO? Here's your chance in a business creating safety in the rise of AI-powered autonomous systems. The Opportunity I’m working with a mission-led startup … central London that's developing groundbreaking software to make AI and autonomous systems safe, predictable, and trusted - starting in the aerospace and defence domains. They’ve already built a strong technical foundation, won key partnerships, and are now hiring a Team Manager to take things to the next level ...

multi-strategy hedge fund with a strong focus on systematic and quantitative trading. Founded by industry veterans, it combines deep financial expertise with advanced software engineering to manage institutional capital globally. What You’ll Do Design and build high impact internal systems using Java Own projects ...

Join a Tier 1 Investment bank in their leading global FX trading platform as a Java Engineer, contributing to the backbone of ultra-low latency systems powering high-volume electronic trading. This role focuses on building high-performance, globally distributed Java services that enable real-time transaction processing, configuration ...

This is the future of HL - and the future of investing. We're building the next generation of platform for one of the UK's largest financial services companies, trusted by over 1.8 million clients ...