726 to 750 of 1,293 Software Engineering Jobs in London

Job Title: Software Engineer - Defence Sector Location: London Security Clearance: SC/DV required Job Type: [Full-Time/Contract/Permanent] Overview: We are seeking a Software Engineer to design, develop, and maintain software solutions for critical defence systems. You'll work on secure, high-reliability applications that support national security and defence operations. Key Responsibilities … Develop and maintain software for mission-critical systems. Collaborate with multidisciplinary teams to meet technical and operational requirements. Write clean, efficient, and well-documented code. Support integration, testing, and debugging in secure environments. Ensure compliance with defence standards and cybersecurity protocols. Requirements: Proficiency in programming languages such as C++, C#, Java, or Python. Experience in embedded systems, real-time … applications, or secure software development. Knowledge of software development lifecycle (SDLC) and version control (e.g. Git). Eligible for SC/DV security clearance. Desirable: Experience with defence or aerospace projects. Familiarity with standards like DO-178C, MISRA, or DEF STANs. Understanding of Agile or DevSecOps methodologies. Reasonable Adjustments: Respect and equality are core values to us. We More ❯

Principal Software Engineer - Lead the Future of UK GovTech Innovation Up to £100,000 + Premium Benefits Package Remote-First | Just 1 Day Onsite Every 2 Weeks SC Clearable | British Citizens Only Where Technology Meets Purpose Are you ready to lead engineering efforts that directly impact national security, public services, and digital transformation across the UK? This is … more than just a job-it's a chance to build technology that matters , in a space where innovation meets mission-critical delivery. We're looking for a Principal Software Engineer to join a high-performing team at the forefront of UK GovTech. You'll architect secure, scalable platforms, mentor elite engineers, and shape technical strategy across programmes that … Lead Tech That Shapes the Nation This is your opportunity to be at the helm of transformative technology projects that serve the public good. If you're passionate about engineering excellence, strategic leadership, and making a real-world impact-this is the role for you. Ready to Lead the Future of UK GovTech? Apply now and become the driving More ❯

Founding Software Engineer 📍 Hybrid — London/Athens 🕒 Full-time | Mid/Senior Level 🚀 Founding Team About Us Inferity is transforming how teams search, analyze, and understand frontline video. From hours of unstructured body cam or incident footage to complex multi-source workflows, our AI-driven platform turns video into structured, decision-ready insights. We’re building AI agents that … reason across video, audio, language, and metadata, powering real-world workflows where accuracy, speed, context, and clarity are essential. The Role We’re looking for a Founding Software Engineer to lead backend and infrastructure development for our category-defining video understanding product. From data ingestion pipelines to scalable APIs, you’ll blend backend engineering and DevOps to turn More ❯

Founding Software Engineer 📍 Hybrid — London/Athens 🕒 Full-time | Mid/Senior Level 🚀 Founding Team About Us Inferity is transforming how teams search, analyze, and understand frontline video. From hours of unstructured body cam or incident footage to complex multi-source workflows, our AI-driven platform turns video into structured, decision-ready insights. We’re building AI agents that … reason across video, audio, language, and metadata, powering real-world workflows where accuracy, speed, context, and clarity are essential. The Role We’re looking for a Founding Software Engineer to lead backend and infrastructure development for our category-defining video understanding product. From data ingestion pipelines to scalable APIs, you’ll blend backend engineering and DevOps to turn More ❯

Founding Software Engineer 📍 Hybrid — London/Athens 🕒 Full-time | Mid/Senior Level 🚀 Founding Team About Us Inferity is transforming how teams search, analyze, and understand frontline video. From hours of unstructured body cam or incident footage to complex multi-source workflows, our AI-driven platform turns video into structured, decision-ready insights. We’re building AI agents that … reason across video, audio, language, and metadata, powering real-world workflows where accuracy, speed, context, and clarity are essential. The Role We’re looking for a Founding Software Engineer to lead backend and infrastructure development for our category-defining video understanding product. From data ingestion pipelines to scalable APIs, you’ll blend backend engineering and DevOps to turn More ❯

Founding Software Engineer 📍 Hybrid — London/Athens 🕒 Full-time | Mid/Senior Level 🚀 Founding Team About Us Inferity is transforming how teams search, analyze, and understand frontline video. From hours of unstructured body cam or incident footage to complex multi-source workflows, our AI-driven platform turns video into structured, decision-ready insights. We’re building AI agents that … reason across video, audio, language, and metadata, powering real-world workflows where accuracy, speed, context, and clarity are essential. The Role We’re looking for a Founding Software Engineer to lead backend and infrastructure development for our category-defining video understanding product. From data ingestion pipelines to scalable APIs, you’ll blend backend engineering and DevOps to turn More ❯

Senior C++ Software Engineer London Join a pioneering team developing advanced software for secure, high-performance communications. This is an opportunity to contribute to technology that supports public safety, defence, and government operations, working within an organisation that combines the innovation of a start-up with the stability of a globally established leader. You’ll play a hands … on role designing and developing complex real-time systems used in mission-critical environments, collaborating with experienced engineers across DevOps, QA, and Architecture. If you’re passionate about engineering excellence, security, and reliability, this is a genuinely impactful role. In this role, you’ll design, build, and maintain C++ software for mission-critical communication systems while integrating with … to deliver scalable and secure solutions that perform under pressure. Your work will also involve participating in architecture discussions, contributing to code reviews, implementing best practices, and ensuring the software meets performance, reliability, and security standards. You’ll have the freedom to innovate and the responsibility to deliver technology that has real-world impact. What's required for this More ❯

Senior C++ Software Engineer London Join a pioneering team developing advanced software for secure, high-performance communications. This is an opportunity to contribute to technology that supports public safety, defence, and government operations, working within an organisation that combines the innovation of a start-up with the stability of a globally established leader. You’ll play a hands … on role designing and developing complex real-time systems used in mission-critical environments, collaborating with experienced engineers across DevOps, QA, and Architecture. If you’re passionate about engineering excellence, security, and reliability, this is a genuinely impactful role. In this role, you’ll design, build, and maintain C++ software for mission-critical communication systems while integrating with … to deliver scalable and secure solutions that perform under pressure. Your work will also involve participating in architecture discussions, contributing to code reviews, implementing best practices, and ensuring the software meets performance, reliability, and security standards. You’ll have the freedom to innovate and the responsibility to deliver technology that has real-world impact. What's required for this More ❯

Senior C++ Software Engineer London Join a pioneering team developing advanced software for secure, high-performance communications. This is an opportunity to contribute to technology that supports public safety, defence, and government operations, working within an organisation that combines the innovation of a start-up with the stability of a globally established leader. You’ll play a hands … on role designing and developing complex real-time systems used in mission-critical environments, collaborating with experienced engineers across DevOps, QA, and Architecture. If you’re passionate about engineering excellence, security, and reliability, this is a genuinely impactful role. In this role, you’ll design, build, and maintain C++ software for mission-critical communication systems while integrating with … to deliver scalable and secure solutions that perform under pressure. Your work will also involve participating in architecture discussions, contributing to code reviews, implementing best practices, and ensuring the software meets performance, reliability, and security standards. You’ll have the freedom to innovate and the responsibility to deliver technology that has real-world impact. What's required for this More ❯

Senior C++ Software Engineer London Join a pioneering team developing advanced software for secure, high-performance communications. This is an opportunity to contribute to technology that supports public safety, defence, and government operations, working within an organisation that combines the innovation of a start-up with the stability of a globally established leader. You’ll play a hands … on role designing and developing complex real-time systems used in mission-critical environments, collaborating with experienced engineers across DevOps, QA, and Architecture. If you’re passionate about engineering excellence, security, and reliability, this is a genuinely impactful role. In this role, you’ll design, build, and maintain C++ software for mission-critical communication systems while integrating with … to deliver scalable and secure solutions that perform under pressure. Your work will also involve participating in architecture discussions, contributing to code reviews, implementing best practices, and ensuring the software meets performance, reliability, and security standards. You’ll have the freedom to innovate and the responsibility to deliver technology that has real-world impact. What's required for this More ❯

Developer with Perl, JavaScript, API, Oracle, and Unit Testing/Integration Testing experience. 6 month initial contract. Remote (UK Based) £675/day (inside IR35) Our client is looking for a Developer with experience around Perl Scripting, JavaScript, APIs, Version More ❯

Developer with Perl, JavaScript, API, Oracle, and Unit Testing/Integration Testing experience. 6 month initial contract. Remote (UK Based) £675/day (inside IR35) Our client is looking for a Developer with experience around Perl Scripting, JavaScript, APIs, Version More ❯

🌐 Fabric is a new AI-first personal cloud – a home for all your data. We believe the next era of computing is proactive, intelligent, universal, and natively multiplayer. Join us in reinventing how millions of people work and think, every More ❯

Senior Golang Software Backend Engineer Fully Remote/UK Working Hours A couple of Senior Golang Software Backend Engineers are required for an exciting and innovative Software house company based in London and Hong Kong. The company operates at the forefront of sports, entertainment, and cryptocurrency, and they are growing rapidly. The successful Software Backend Engineer … members, helping them grow both professionally and personally. Their development team uses various different programming languages with a particular focus on Golang but they are looking primarily for strong software developers first and experiences of technologies second. The company is made up of some of the very best software developers and mathematicians. Each brings their unique perspective from … their backgrounds in computer science, physics, mathematics, statistics and engineering. Essential Skills 10+ years commercial experience in software engineering. Demonstrable experience building high-quality and scalable digital products and features. Strong project management and communication skills with the ability to collaborate across cross-functional teams. Ability to confidently make technical decisions in the best interests of users and the More ❯

Senior Golang Software Backend Engineer Fully Remote/UK Working Hours A couple of Senior Golang Software Backend Engineers are required for an exciting and innovative Software house company based in London and Hong Kong. The company operates at the forefront of sports, entertainment, and cryptocurrency, and they are growing rapidly. The successful Software Backend Engineer … members, helping them grow both professionally and personally. Their development team uses various different programming languages with a particular focus on Golang but they are looking primarily for strong software developers first and experiences of technologies second. The company is made up of some of the very best software developers and mathematicians. Each brings their unique perspective from … their backgrounds in computer science, physics, mathematics, statistics and engineering. Essential Skills 10+ years commercial experience in software engineering. Demonstrable experience building high-quality and scalable digital products and features. Strong project management and communication skills with the ability to collaborate across cross-functional teams. Ability to confidently make technical decisions in the best interests of users and the More ❯

Our client is looking for a Head of Product & Technology to lead product and engineering organisations. This role will focus on innovation, market expansion, and enhancing digital solutions This is an Athens-based role and fluency in Greek is essential Key Responsibilities: Define and a unified product and technology vision Lead and scale the engineering function Oversee the … full product lifecycle from development to launch Ensure alignment with business goals and market trends Attract, retain, and grow top talent across product management, software engineering, QA, and DevOps Qualifications: 12+ years in technology and product roles, with at least 5 years in senior management Proven track record in fintech More ❯

Our client is looking for a Head of Product & Technology to lead product and engineering organisations. This role will focus on innovation, market expansion, and enhancing digital solutions This is an Athens-based role and fluency in Greek is essential Key Responsibilities: Define and a unified product and technology vision Lead and scale the engineering function Oversee the … full product lifecycle from development to launch Ensure alignment with business goals and market trends Attract, retain, and grow top talent across product management, software engineering, QA, and DevOps Qualifications: 12+ years in technology and product roles, with at least 5 years in senior management Proven track record in fintech More ❯

Our client is looking for a Head of Product & Technology to lead product and engineering organisations. This role will focus on innovation, market expansion, and enhancing digital solutions This is an Athens-based role and fluency in Greek is essential Key Responsibilities: Define and a unified product and technology vision Lead and scale the engineering function Oversee the … full product lifecycle from development to launch Ensure alignment with business goals and market trends Attract, retain, and grow top talent across product management, software engineering, QA, and DevOps Qualifications: 12+ years in technology and product roles, with at least 5 years in senior management Proven track record in fintech More ❯

Our client is looking for a Head of Product & Technology to lead product and engineering organisations. This role will focus on innovation, market expansion, and enhancing digital solutions This is an Athens-based role and fluency in Greek is essential Key Responsibilities: Define and a unified product and technology vision Lead and scale the engineering function Oversee the … full product lifecycle from development to launch Ensure alignment with business goals and market trends Attract, retain, and grow top talent across product management, software engineering, QA, and DevOps Qualifications: 12+ years in technology and product roles, with at least 5 years in senior management Proven track record in fintech More ❯

Software Engineer C#, .NET Core, NUnit, Postgres, AWS, Azure, Kubernetes, Docker. City of London, United Kingdom Perm Role: £65,000 - £80,000 Harrington Starr has partnered with a Global Financial Technology company, and they are looking to hire a Mid - Senior C#, .Net Software Engineer, with experience working with highly scalable and performant systems. This is a great … system designing, planning, and implementing new features. Key responsibilities: Hands on contribution to the design of major products and applications. Designing, planning and executing new features. Ensuring consistency across engineering teams, utilising appropriate the appropriate technologies within the applications. Benefits of the role: Flexible hybrid working structure (3 days onsite) Generous holiday leave. Private medical insurance. Excellent base salary … unrestricted right to work in the UK. This role offers hybrid working, with an office location based in the City of London. This role will suit a Mid - Senior Software Engineer, with strong C#, .Net experience, having a direct impact from the get-go! For any additional questions, please contact me via LinkedIn or through email - ollie.bluck@harringtonstarr.com. If More ❯

in our Search & Match domain, you will be working collaboratively on products using AI models and semantic search, and play a key role inglobal steeringof technical decisions, ensuring our engineering practices scale effectively across multiple markets. You will play a vital role as we reimagine the labour market to make it work for everybody. Your responsibilities: Start your day More ❯

Principal Software Engineer - Shape the Future of UK GovTech Up to £95,000 + Premium Benefits Remote-First | Just 1 Day Onsite Every 2 Weeks SC Clearable | British Citizens Only Lead Innovation. Drive Transformation. Make an Impact. Ready to take the reins on projects that power national security and digital transformation This is your chance to lead at the … intersection of technology and purpose . As a Principal Software Engineer , you'll architect cloud-native platforms , mentor elite engineering teams, and influence technical strategy across mission-critical government programmes . Your work won't just be code-it will shape the future of UK GovTech . Your Role in Action Architect secure, scalable, resilient systems using modern More ❯

Senior Software Engineer | Hybrid | London We are hiring for an innovative analytics software company powering global credit investment is expanding its engineering team and looking for a Senior Software Engineer to help shape its next generation of data products. This is a unique opportunity to influence the technical roadmap at a high-growth fintech scale-up … working with top-tier global financial institutions. The role involves building and scaling backend systems in Node.js and Python, deploying on AWS (Lambda, DynamoDB, PostgreSQL), and collaborating closely across engineering, product, and customer teams. 💼 Ideal Candidate: Proven experience with backend/fullstack development using Node.js , Python , and AWS serverless architecture Strong database design skills (PostgreSQL, DynamoDB, Elasticsearch) Familiarity with More ❯

Senior Software Engineer | Hybrid | London We are hiring for an innovative analytics software company powering global credit investment is expanding its engineering team and looking for a Senior Software Engineer to help shape its next generation of data products. This is a unique opportunity to influence the technical roadmap at a high-growth fintech scale-up … working with top-tier global financial institutions. The role involves building and scaling backend systems in Node.js and Python, deploying on AWS (Lambda, DynamoDB, PostgreSQL), and collaborating closely across engineering, product, and customer teams. 💼 Ideal Candidate: Proven experience with backend/fullstack development using Node.js , Python , and AWS serverless architecture Strong database design skills (PostgreSQL, DynamoDB, Elasticsearch) Familiarity with More ❯

Senior Software Engineer | Hybrid | London We are hiring for an innovative analytics software company powering global credit investment is expanding its engineering team and looking for a Senior Software Engineer to help shape its next generation of data products. This is a unique opportunity to influence the technical roadmap at a high-growth fintech scale-up … working with top-tier global financial institutions. The role involves building and scaling backend systems in Node.js and Python, deploying on AWS (Lambda, DynamoDB, PostgreSQL), and collaborating closely across engineering, product, and customer teams. 💼 Ideal Candidate: Proven experience with backend/fullstack development using Node.js , Python , and AWS serverless architecture Strong database design skills (PostgreSQL, DynamoDB, Elasticsearch) Familiarity with More ❯