426 to 450 of 1,038 Software Engineer Jobs in London

Software Engineer Key Technologies: C#, SQL, React, Bloomberg, Fidessa, FactSet APIs London Perm Role | 4 Days Onsite £55,000 - £65,000 Harrington Starr has partnered with a well-established London based Investment Bank to find a Full Stack Developer at the Associate level. This is a hands-on development role, supporting a range of internal systems across trading … and business operations. Key Responsibilities: Develop and maintain software using C#, SQL, and React Integrate real-time and historical data from third-party APIs Follow agile sprint plans and deliver reliable, secure solutions Ensure systems meet regulatory and cybersecurity standards Key Benefits: Salary up to £65,000 depending on experience 4 days onsite in a central London office Exposure More ❯

Software Engineer Key Technologies: C#, SQL, React, Bloomberg, Fidessa, FactSet APIs London Perm Role | 4 Days Onsite £55,000 - £65,000 Harrington Starr has partnered with a well-established London based Investment Bank to find a Full Stack Developer at the Associate level. This is a hands-on development role, supporting a range of internal systems across trading … and business operations. Key Responsibilities: Develop and maintain software using C#, SQL, and React Integrate real-time and historical data from third-party APIs Follow agile sprint plans and deliver reliable, secure solutions Ensure systems meet regulatory and cybersecurity standards Key Benefits: Salary up to £65,000 depending on experience 4 days onsite in a central London office Exposure More ❯

Software Engineer Key Technologies: C#, SQL, React, Bloomberg, Fidessa, FactSet APIs London Perm Role | 4 Days Onsite £55,000 - £65,000 Harrington Starr has partnered with a well-established London based Investment Bank to find a Full Stack Developer at the Associate level. This is a hands-on development role, supporting a range of internal systems across trading … and business operations. Key Responsibilities: Develop and maintain software using C#, SQL, and React Integrate real-time and historical data from third-party APIs Follow agile sprint plans and deliver reliable, secure solutions Ensure systems meet regulatory and cybersecurity standards Key Benefits: Salary up to £65,000 depending on experience 4 days onsite in a central London office Exposure More ❯

Software Engineer Key Technologies: C#, SQL, React, Bloomberg, Fidessa, FactSet APIs London Perm Role | 4 Days Onsite £55,000 - £65,000 Harrington Starr has partnered with a well-established London based Investment Bank to find a Full Stack Developer at the Associate level. This is a hands-on development role, supporting a range of internal systems across trading … and business operations. Key Responsibilities: Develop and maintain software using C#, SQL, and React Integrate real-time and historical data from third-party APIs Follow agile sprint plans and deliver reliable, secure solutions Ensure systems meet regulatory and cybersecurity standards Key Benefits: Salary up to £65,000 depending on experience 4 days onsite in a central London office Exposure More ❯

Software Engineer - Python (FinTech) Join a fast-growing fintech on a mission to redefine how people interact with their finances. Help build a real-time platform that empowers individuals and businesses with smarter, faster and more transparent financial tools, all wrapped in a seamless user-centric experience. We believe in challenging the status quo, building products people love … and having fun along the way. We’re looking for a talented Python Engineer who’s passionate about creating an exceptional real-time data platform that will process and deliver data instantaneously; allowing for instant insights and actions. In finance, these systems are crucial because markets move very quickly, and delays of even milliseconds can have big consequences. Essential More ❯

Software Engineer - Python (FinTech) Join a fast-growing fintech on a mission to redefine how people interact with their finances. Help build a real-time platform that empowers individuals and businesses with smarter, faster and more transparent financial tools, all wrapped in a seamless user-centric experience. We believe in challenging the status quo, building products people love … and having fun along the way. We’re looking for a talented Python Engineer who’s passionate about creating an exceptional real-time data platform that will process and deliver data instantaneously; allowing for instant insights and actions. In finance, these systems are crucial because markets move very quickly, and delays of even milliseconds can have big consequences. Essential More ❯

Software Engineer - Python (FinTech) Join a fast-growing fintech on a mission to redefine how people interact with their finances. Help build a real-time platform that empowers individuals and businesses with smarter, faster and more transparent financial tools, all wrapped in a seamless user-centric experience. We believe in challenging the status quo, building products people love … and having fun along the way. We’re looking for a talented Python Engineer who’s passionate about creating an exceptional real-time data platform that will process and deliver data instantaneously; allowing for instant insights and actions. In finance, these systems are crucial because markets move very quickly, and delays of even milliseconds can have big consequences. Essential More ❯

Software Engineer - Python (FinTech) Join a fast-growing fintech on a mission to redefine how people interact with their finances. Help build a real-time platform that empowers individuals and businesses with smarter, faster and more transparent financial tools, all wrapped in a seamless user-centric experience. We believe in challenging the status quo, building products people love … and having fun along the way. We’re looking for a talented Python Engineer who’s passionate about creating an exceptional real-time data platform that will process and deliver data instantaneously; allowing for instant insights and actions. In finance, these systems are crucial because markets move very quickly, and delays of even milliseconds can have big consequences. Essential More ❯

Software Engineer | Climate Tech | London (Hybrid) Want to code for impact ? This early-stage climate tech startup is building the software powering the transition to a cleaner, smarter energy system - and they’re looking for engineers who love to move fast, solve hard problems , and see their work make a real difference. Backed by top-tier investors … knit, mission-driven team They’re open to all OOP languages (core stack is Python ). 📍 London | Hybrid (2-3 days/week) If you’re ready to build software that accelerates the shift to clean energy - apply now More ❯

Software Engineer | Climate Tech | London (Hybrid) Want to code for impact ? This early-stage climate tech startup is building the software powering the transition to a cleaner, smarter energy system - and they’re looking for engineers who love to move fast, solve hard problems , and see their work make a real difference. Backed by top-tier investors … knit, mission-driven team They’re open to all OOP languages (core stack is Python ). 📍 London | Hybrid (2-3 days/week) If you’re ready to build software that accelerates the shift to clean energy - apply now More ❯

Software Engineer | Climate Tech | London (Hybrid) Want to code for impact ? This early-stage climate tech startup is building the software powering the transition to a cleaner, smarter energy system - and they’re looking for engineers who love to move fast, solve hard problems , and see their work make a real difference. Backed by top-tier investors … knit, mission-driven team They’re open to all OOP languages (core stack is Python ). 📍 London | Hybrid (2-3 days/week) If you’re ready to build software that accelerates the shift to clean energy - apply now More ❯

Software Engineer | Climate Tech | London (Hybrid) Want to code for impact ? This early-stage climate tech startup is building the software powering the transition to a cleaner, smarter energy system - and they’re looking for engineers who love to move fast, solve hard problems , and see their work make a real difference. Backed by top-tier investors … knit, mission-driven team They’re open to all OOP languages (core stack is Python ). 📍 London | Hybrid (2-3 days/week) If you’re ready to build software that accelerates the shift to clean energy - apply now More ❯

Software Engineer Security Platform London (Onsite 5 days) Looking to build something hugely impactful within security? This VC-backed startup is redefining how enterprises secure the cloud - already processing billions of events weekly , doubling ARR last quarter , and landing on multiple Startup to Watch lists out there. Now they re bringing in further Software Engineers to help More ❯

Software Engineer | Security Platform | London (Onsite 5 days) Looking to build something hugely impactful within security? This VC-backed startup is redefining how enterprises secure the cloud - already processing billions of events weekly , doubling ARR last quarter , and landing on multiple “Startup to Watch” lists out there. Now they’re bringing in further Software Engineers to help More ❯

Software Engineer | Security Platform | London (Onsite 5 days) Looking to build something hugely impactful within security? This VC-backed startup is redefining how enterprises secure the cloud - already processing billions of events weekly , doubling ARR last quarter , and landing on multiple “Startup to Watch” lists out there. Now they’re bringing in further Software Engineers to help More ❯

About The Role Job Level: 10 UK Wide We are looking for aLead Software Engineerwho will be responsible for the design, development, and deployment of high-quality software solutions. This role involves leading a team of engineers on high-profile projects, ensuring best practices are followed, and driving continuous improvement in software development processes. You will collaborate … closely with cross-functional teams, including product management and UX/UI, to ensure that our software solutions meet business and customer needs. You will be responsible for driving culture through your craft and be keen to take on line management responsibilities. Responsibilities Lead the architecture, design, and development of complex software systems, ensuring they meet high standards … of quality, security, and scalability. Manage and mentor a team of software engineers, providing technical guidance to foster professional growth. Ensure that coding standards, development best practices, and operational processes are consistently applied. Collaborate with product managers, UX/UI teams, and other departments such as DevOps, QA, and IT to translate business requirements into technical specifications and ensure More ❯

Software and Senior Software Engineers – Microsoft Dynamics/Cloud/Integrations - Hybrid/London (2-3 days per week)- up to £90k + Bonus and Benefits We’re exclusively recruiting for a Fortune 200 global technology solutions provider that helps some of the world’s most recognised brands design, build, implement, and manage complex IT infrastructure. They’re … an industry leader in enterprise technology, holding top-level accreditations with Microsoft, Cisco, Dell, HP, AWS, and many more. We’re looking for Software Engineers and Senior Software Engineers to join the team as they build modern, scalable software systems supporting enterprise-level digital transformation across international operations. What you’ll do Build, maintain, and enhance large More ❯

Software and Senior Software Engineers – Microsoft Dynamics/Cloud/Integrations - Hybrid/London (2-3 days per week)- up to £90k + Bonus and Benefits We’re exclusively recruiting for a Fortune 200 global technology solutions provider that helps some of the world’s most recognised brands design, build, implement, and manage complex IT infrastructure. They’re … an industry leader in enterprise technology, holding top-level accreditations with Microsoft, Cisco, Dell, HP, AWS, and many more. We’re looking for Software Engineers and Senior Software Engineers to join the team as they build modern, scalable software systems supporting enterprise-level digital transformation across international operations. What you’ll do Build, maintain, and enhance large More ❯

Software and Senior Software Engineers – Microsoft Dynamics/Cloud/Integrations - Hybrid/London (2-3 days per week)- up to £90k + Bonus and Benefits We’re exclusively recruiting for a Fortune 200 global technology solutions provider that helps some of the world’s most recognised brands design, build, implement, and manage complex IT infrastructure. They’re … an industry leader in enterprise technology, holding top-level accreditations with Microsoft, Cisco, Dell, HP, AWS, and many more. We’re looking for Software Engineers and Senior Software Engineers to join the team as they build modern, scalable software systems supporting enterprise-level digital transformation across international operations. What you’ll do Build, maintain, and enhance large More ❯

algorithms, implementing, and deploying scalable solutions, and enabling colleagues and clients to fully embrace AI. Our product offerings span from fully custom-builds to industry specific leading edge AI software solutions. As a (Senior) AI Software Engineer you'll be part of our rapidly growing engineering team and help to build the next generation of AI solutions. … and delivering thought leadership in scientific communities and papers as well as leading conferences on behalf of BCG X. We are looking for talented individuals with a passion for software development, large-scale data analytics and transforming organizations into AI led innovative companies. Successful candidates possess the following: +4 years of experience in a technology consulting environment Apply software development practices and standards to develop robust and maintainable software Actively involved in every part of the software development life cycle Experienced at guiding non-technical teams and consultants in and best practices for robust software development Optimize and enhance computational efficiency of algorithms and software design Motivated by a fast-paced, service-oriented environment More ❯

Software Engineer Location: London Experience: 27 Years Industry: Market Making/Proprietary Trading/Capital Markets Please note applicants coming from a buy side/trading/capital markets background will be given a strong preference Looking for software engineers to join a small but highly skilled, and collaborative, bringing together expert traders and software engineers. … or Python (C++ a plus) Familiarity with databases (e.g., SQL Server, Postgres) Familiarity with developing, testing, or deploying with cloud providers (e.g., AWS, GCP, Azure) Experience using version control software (e.g., Git) Curiosity and a desire to solve challenging problems Strong programming ability A collaborative mindset and eagerness to give and receive feedback Excellent written and verbal communication skills More ❯

Senior Software Engineer – Backend (Java) 📅 6-Month Contract | 🏢 Hybrid (2 Days in Office) | 💷 £600 p/d inside ir35 We’re looking for a skilled Backend Java Engineer to join an innovative team on a 6-month contract. If you love solving complex problems, mentoring others, and working on cutting-edge data platforms at scale- this one More ❯

Senior Software Engineer – Backend (Java) 📅 6-Month Contract | 🏢 Hybrid (2 Days in Office) | 💷 £600 p/d inside ir35 We’re looking for a skilled Backend Java Engineer to join an innovative team on a 6-month contract. If you love solving complex problems, mentoring others, and working on cutting-edge data platforms at scale- this one More ❯

Senior Software Engineer – Backend (Java) 📅 6-Month Contract | 🏢 Hybrid (2 Days in Office) | 💷 £600 p/d inside ir35 We’re looking for a skilled Backend Java Engineer to join an innovative team on a 6-month contract. If you love solving complex problems, mentoring others, and working on cutting-edge data platforms at scale- this one More ❯

Senior Software Engineer – Backend (Java) 📅 6-Month Contract | 🏢 Hybrid (2 Days in Office) | 💷 £600 p/d inside ir35 We’re looking for a skilled Backend Java Engineer to join an innovative team on a 6-month contract. If you love solving complex problems, mentoring others, and working on cutting-edge data platforms at scale- this one More ❯