1 to 25 of 55 Senior Software Engineer Jobs in Hertfordshire

looking for a Senior Software Engineer to join our team and take our technology and your career into new territories! MBDA is a great a place to learn about the company's entire product portfolio, whilst embracing the change to DevOps and other innovative technologies! Job Title … Senior Software Engineer Salary: £40,000-£75,000 depending on experience Location: Stevenage (We may be able to offer a relocation package for this role) Dynamic (hybrid) working : Typically for this role you will work 3-5 days per week on-site due to workload classification. Security ...

looking for a Senior Software Engineer to join our team and take our technology and your career into new territories! MBDA is a great a place to learn about the company's entire product portfolio, whilst embracing the change to DevOps and other innovative technologies! Job Title … Senior Software Engineer Salary: £40,000-£75,000 depending on experience Location: Stevenage (We may be able to offer a relocation package for this role) Dynamic (hybrid) working : Typically for this role you will work 3-5 days per week on-site due to workload classification. Security ...

Senior Software Engineer – C/C++ ARCA is currently looking for a Senior Software Engineer to join on a short-term contract to help support an automotive/motorsport engineering programme. This role suits someone comfortable working close to real-time systems, networking … performance-critical software, typically found in vehicle platforms, simulation, data or control environments. Key Responsibilities Develop and maintain high-performance C/C++ software Work on concurrent, parallel and asynchronous systems Contribute to distributed, real-time architectures (pub/sub models, time-synchronised systems) Key Skills & Experience Strong ...

Senior Software Engineer – C/C++ ARCA is currently looking for a Senior Software Engineer to join on a short-term contract to help support an automotive/motorsport engineering programme. This role suits someone comfortable working close to real-time systems, networking … performance-critical software, typically found in vehicle platforms, simulation, data or control environments. Key Responsibilities Develop and maintain high-performance C/C++ software Work on concurrent, parallel and asynchronous systems Contribute to distributed, real-time architectures (pub/sub models, time-synchronised systems) Key Skills & Experience Strong ...

Senior Software Engineer – C/C++ ARCA is currently looking for a Senior Software Engineer to join on a short-term contract to help support an automotive/motorsport engineering programme. This role suits someone comfortable working close to real-time systems, networking … performance-critical software, typically found in vehicle platforms, simulation, data or control environments. Key Responsibilities Develop and maintain high-performance C/C++ software Work on concurrent, parallel and asynchronous systems Contribute to distributed, real-time architectures (pub/sub models, time-synchronised systems) Key Skills & Experience Strong ...

Senior Software Engineer (Blockchain) Location: Remote Salary: Up to £120,000 + Bonus Are you ready to shape the future of digital finance? We're partnering with a pioneering organisation at the forefront of blockchain innovation to find a Senior Software Engineer who thrives … with cross-functional teams to ensure compliance, scalability, and security. Drive engineering excellence through best practices, testing, and mentorship. What We're Looking For: Senior level experience in fullstack and blockchain engineering. Deep expertise in Solidity, TypeScript, and EVM-based smart contract development. Strong understanding of DeFi primitives, stablecoin ...

Senior Software Engineer (Blockchain) Location: Remote Salary: Up to £120,000 + Bonus Are you ready to shape the future of digital finance? We're partnering with a pioneering organisation at the forefront of blockchain innovation to find a Senior Software Engineer who thrives … with cross-functional teams to ensure compliance, scalability, and security. Drive engineering excellence through best practices, testing, and mentorship. What We're Looking For: Senior level experience in fullstack and blockchain engineering. Deep expertise in Solidity, TypeScript, and EVM-based smart contract development. Strong understanding of DeFi primitives, stablecoin ...

Senior Software Engineer (Blockchain) Location: Remote Salary: Up to £120,000 + Bonus Are you ready to shape the future of digital finance? We're partnering with a pioneering organisation at the forefront of blockchain innovation to find a Senior Software Engineer who thrives … with cross-functional teams to ensure compliance, scalability, and security. Drive engineering excellence through best practices, testing, and mentorship. What We're Looking For: Senior level experience in fullstack and blockchain engineering. Deep expertise in Solidity, TypeScript, and EVM-based smart contract development. Strong understanding of DeFi primitives, stablecoin ...

Senior Software Engineer This role is Hybrid, 2/3 days p/w in St Albans. This opportunity does not offer sponsorship. La Fosse are partnering with an innovative, technology-focused, environmental services client who specialise in monitoring systems and services. As a Senior Software Engineer, you will be a hands-on engineering leader, taking ownership of their platform used across the UK environmental monitoring sector. This is a role for someone who thrives in small-team, high-ownership environments, enjoys working across the full system lifecycle, and wants their work to meaningfully ...

Senior Embedded Software Engineer | Cambridge Are you a highly experienced Embedded Software Engineer with a passion for problem-solving across the full product lifecycle? My client developed highly precise scientific instruments & sensors. Responsibilities as an Embedded Linux Software Engineer : Design and develop bare … metal, RTOS, and DSP algorithm embedded software using C/C++ on ARM Cortex MCUs Create production support software, like test jig interfaces and calibration tools Troubleshoot hardware issues, perform fault finding, and resolve system-level problems Requirements: 5+ of Embedded Firmware/Software engineering experience Strong ...

Senior C++ Software Engineer (Remote – Anywhere in Europe) High-impact work. Exceptional teammates. Real work–life balance. Looking for a role where you can work fully remote across Europe, collaborate with an outstanding team of C++ engineers, enjoy a genuinely healthy 9–5 schedule, and receive … while solving cutting‐edge technical challenges? If that sounds like your ideal setup, you're in the right place. We're searching for a Senior Software Engineer (3–8 years experience) with strong modern C++ skills who's ready to take ownership of complex projects, push technical ...

Senior C++ Software Engineer (Remote – Anywhere in Europe) High-impact work. Exceptional teammates. Real work–life balance. Looking for a role where you can work fully remote across Europe, collaborate with an outstanding team of C++ engineers, enjoy a genuinely healthy 9–5 schedule, and receive … while solving cutting‐edge technical challenges? If that sounds like your ideal setup, you're in the right place. We're searching for a Senior Software Engineer (3–8 years experience) with strong modern C++ skills who's ready to take ownership of complex projects, push technical ...

Senior Software Engineer (Test Software) Location: Stevenage Salary: Up to £75,000 per annum + Bonus Benefits: Job security (Big industry investment, no redundancies during Covid & kept hiring), great pension, Annual Pay Review, Enhanced Parental Leave, Training & Membership Fund, Courses & Training, Hobby Clubs and more … market leading and global company within the aerospace defence sector are looking for passionate software engineers with experience within test software. This is a fascinating chance to be involved with developing and supporting test software solutions for use within test equipment on aerospace electronics and their control systems. ...

Senior Software Engineer (Test Software) Location: Stevenage Salary: Up to £75,000 per annum + Bonus Benefits: Job security (Big industry investment, no redundancies during Covid & kept hiring), great pension, Annual Pay Review, Enhanced Parental Leave, Training & Membership Fund, Courses & Training, Hobby Clubs and more … market leading and global company within the aerospace defence sector are looking for passionate software engineers with experience within test software. This is a fascinating chance to be involved with developing and supporting test software solutions for use within test equipment on aerospace electronics and their control systems. ...

Senior Software Developer Java, Spring Boot, Python, AWS, DB2 £475-500 per day, Outside IR35 Starting date: 5th January 2026 Duration: Initially 6 Months (very likely to extend) Fully Remote Unify are proud to be exclusively representing a UK Consultancy partner who urgently requires the services … Senior Software Developer, on an Outside IR35 Contract basis, to join a project team delivering a high profile Government program. Essential Skills & Experience: Software Development Expertise: Proven experience as a software developer, specifically with a background in software upgrades, bug fixes, and addressing vulnerabilities Agile ...

Senior Software Developer Java, Spring Boot, Python, AWS, DB2 £475-500 per day, Outside IR35 Starting date: 5th January 2026 Duration: Initially 6 Months (very likely to extend) Fully Remote Unify are proud to be exclusively representing a UK Consultancy partner who urgently requires the services … Senior Software Developer, on an Outside IR35 Contract basis, to join a project team delivering a high profile Government program. Essential Skills & Experience: Software Development Expertise: Proven experience as a software developer, specifically with a background in software upgrades, bug fixes, and addressing vulnerabilities Agile ...

Vacancy Are you a Senior Software Developer looking to make a real impact in healthcare technology? Do you want to work on meaningful products that support medical professionals and trainees across the UK? If so, this could be the perfect opportunity for you. We're looking … talented and motivated Senior Software Developer to join the FourteenFish team at Optum UK. You'll be part of a collaborative, forward-thinking group building world-class solutions that improve the lives of healthcare professionals. This role will see you working across our product suite, contributing ...

Vacancy Are you a Senior Software Developer looking to make a real impact in healthcare technology? Do you want to work on meaningful products that support medical professionals and trainees across the UK? If so, this could be the perfect opportunity for you. We're looking … talented and motivated Senior Software Developer to join the FourteenFish team at Optum UK. You'll be part of a collaborative, forward-thinking group building world-class solutions that improve the lives of healthcare professionals. This role will see you working across our product suite, contributing ...

Senior Embedded Software Engineer We are working with a pioneering specialist in rugged, next‐generation low‐light imaging systems, trusted across defence, aerospace, surveillance, and scientific markets to recruit a highly motivated Embedded Software Engineer to join their team. The successful candidate will play … role in designing, developing, and maintaining embedded software solutions for advanced imaging and sensor systems. This role requires strong technical expertise, problem-solving skills, and the ability to work collaboratively in a multidisciplinary environment. Key Responsibilities Develop and maintain embedded software, SDKs, and firmware for imaging systems Integrate ...

Senior Embedded Software Engineer We are working with a pioneering specialist in rugged, next‐generation low‐light imaging systems, trusted across defence, aerospace, surveillance, and scientific markets to recruit a highly motivated Embedded Software Engineer to join their team. The successful candidate will play … role in designing, developing, and maintaining embedded software solutions for advanced imaging and sensor systems. This role requires strong technical expertise, problem-solving skills, and the ability to work collaboratively in a multidisciplinary environment. Key Responsibilities Develop and maintain embedded software, SDKs, and firmware for imaging systems Integrate ...

Senior+ Software Engineer - Python | FastAPI | AWS £90,000-120,000 + Bonus and Stock Flexible benefits | 90 day work-from-anywhere perk Python, FastAPI, gRPC, AWS Remote first or hybrid (London) InsurTech | high traffic, scalable, event-driven, microservices development We've partnered with … years. Following a successful profitability push, they're now entering a growth phase and expanding their product offering. As a Lead/Senior+ Software Engineer you'll help drive technical direction and architecture within a product-led squad environment, rotating across business domains. This is an opportunity ...

Senior+ Software Engineer - Python | FastAPI | AWS £90,000-120,000 + Bonus and Stock Flexible benefits | 90 day work-from-anywhere perk Python, FastAPI, gRPC, AWS Remote first or hybrid (London) InsurTech | high traffic, scalable, event-driven, microservices development We've partnered with … years. Following a successful profitability push, they're now entering a growth phase and expanding their product offering. As a Lead/Senior+ Software Engineer you'll help drive technical direction and architecture within a product-led squad environment, rotating across business domains. This is an opportunity ...

Senior+ Software Engineer - Python | FastAPI | AWS £90,000-120,000 + Bonus and Stock Flexible benefits | 90 day work-from-anywhere perk Python, FastAPI, gRPC, AWS Remote first or hybrid (London) InsurTech | high traffic, scalable, event-driven, microservices development We've partnered with … years. Following a successful profitability push, they're now entering a growth phase and expanding their product offering. As a Lead/Senior+ Software Engineer you'll help drive technical direction and architecture within a product-led squad environment, rotating across business domains. This is an opportunity ...

Title: Senior Software Engineer (.NET + React) Job Type: Permanent Location: UK Remote based Salary: £70,000-£80,000 (DOE) Skills: C#, .NET Core, React (Typescript), Azure, Microservices, Design Patterns Roc Search are seeking a Senior Software Developer with .NET and React experience to join … collaborative dev team building globally used, cloud-based products. This is a hands-on role covering development, research, and maintenance across the full software development lifecycle. This is a fully remote role but they do have an office based in London. It is a greenfield project where you will ...

Title: Senior Software Engineer (.NET + React) Job Type: Permanent Location: UK Remote based Salary: £70,000-£80,000 (DOE) Skills: C#, .NET Core, React (Typescript), Azure, Microservices, Design Patterns Roc Search are seeking a Senior Software Developer with .NET and React experience to join … collaborative dev team building globally used, cloud-based products. This is a hands-on role covering development, research, and maintenance across the full software development lifecycle. This is a fully remote role but they do have an office based in London. It is a greenfield project where you will ...