Principal Software Engineer jobs in Watford, Hertfordshire

Senior Software Engineer – C++ / Embedded Systems A leading engineering and technology business is seeking a Senior Software Engineer to join its growing software development team working on advanced real-time and mission-critical systems....

The Senior Software Engineer is responsible for the whole or an assigned portion of a design from preliminary specification through to verified software. The Senior Software Engineer provides expert knowledge of software design, test and verification....

The Senior Embedded Software Engineer will bring: A minimum of a good Bachelors Degree in Software Engineering, Electronics, Computer Science or similar discipline. Strong programming skills in C....

Contract Senior Software Engineer (Java or Python) | Inside IR35 Contract length: 6 months (with potential to extend) Location: London Working Environment: On-site...

This role is ideal for a Senior Software Engineer who is strong in Node.js and comfortable working across the stack, including building APIs and backend services in PHP....

One of the UK’s fastest-growing fintechs is hiring. At ANNA Money, we’re rethinking what business admin should feel like for freelancers, founders and small businesses. No jargon, no clunky tools — just smart, intuitive products that actually save people time. From invoicing and expenses...

StrideUp is leading a new era of values-driven finance. Ranked the 5th fastest growing fintech in the UK and Ireland in 2025, we have already deployed hundreds of millions in property finance, supporting people in achieving their financial goals. What makes us different is how we combine purpose...

This Senior Software Engineer role will appeal to those who have already thrived in an Electronics Engineering environment and seek to broaden their knowledge in this type of application....

Senior Software Engineer Enfield – 3 Days in Office £60,000-£65,000 I’m currently working with a well-established global engineering company who are looking for a Senior Software Engineer to join their growing team in Enfield....

Embedded Software Development Engineer | Slough | Circa £50,000 I’m recruiting on behalf of an innovative product development consultancy for an Embedded Software Engineer to join their growing team in Slough. The Role You’ll develop...

This is an excellent opportunity for a senior embedded engineer ready to step into a lead role - or an existing lead engineer looking for greater technical ownership and influence within an innovative engineering environment developing advanced electric products....

Alstom is the UK & Ireland’s leading supplier of new trains and train services, and a leading signalling and rail infrastructure provider. Alstom have built, or are building, just under 40% of the UK mainline train fleet; as well as the entire fleets in service with London Underground and Dublin...

Rewarding opening for an accomplished Embedded Software Engineer with expertise in real-time embedded systems design using C for Linux and PIC based Microcontrollers. Hybrid working and generous salary package. This thriving High-Technology Company seeks a detail orientated...

We are looking for a C++ Software Engineer to work on defence projects. Key Responsibilities Develop and maintain C++ and Python software for complex systems Work on real-time data processing, simulation, or sensor integration Support verification, validation...

A Software Test and Automation Engineer with a background involving the use of Python and Behave together with knowledge of supporting HIL and SIL testing within a Hardware Engineering environment, will join a thriving High-Tech Company where quality and product reliability are key. A competitive...

Job Title: Contract Embedded Software Engineer Location: Watford Rate: £50 to £60 per hour Employment Type: Contract Working Arrangements: Hybrid IR35...

Principal Design Engineer – RF & High Power Amplifier Systems Location: Watford, Hertfordshire Salary: £80,000 to £95,000 basic + Bonus + great benefits Hybrid working We are recruiting...

We are supporting a cutting‑edge deep‑tech company in London that is building full‑stack photonic quantum systems designed to transform how organisations run machine learning, generative AI, and large‑scale optimisation workloads. Their technology is already...

Principal Engineer / Lead Full Stack Engineer Remote - Hybrid. UK Only. 4-6 office visits per year. TypeScript | Node.js | Microservices | SaaS Platform We're partnering with a high-growth UK SaaS business that is investing heavily...

ROLE OVERVIEW: We are currently looking for a Machine Learning Engineer to join a leading research organisation based in London. As Machine Learning Engineer, you will be responsible for advancing data-processing, model-building, and deployment capabilities for a pioneering...