Senior QA Engineer jobs in Chelmsford

You will own the UK market from the first touchpoint to the final signature, selling directly to CTOs, Heads of QA, and Engineering Leaders.

About Webigence and Spark Travel Webigence has 25 years of experience crafting UX‐first, often highly complex software. Our engineers pair forward‐thinking agile practices with an obsession for intuitive design, shipping products that feel effortless even when the logic underneath is anything but. Alongside a handful of long‐standing third‐party clients, we're scaling our own SaaS product—Spark...

Job Description A Senior RF Design Engineer will join a thriving Technical Consultancy to work on a complex range of projects from radar systems and advanced robotic systems to sensors and radio communications. The successful Senior RF Design Engineer will be qualified to Degree level in Electronic Engineering or a similar discipline and will bring several years post-graduate experience in...

You will be working on a diverse project portfolio. The ideal candidate will have strong regulatory knowledge, a track record of project success, and expertise in mechanical design software like Revit MEP and AutoCAD.

🚀 Senior Full-Stack Engineer – TypeScript / React / AWS 💰 Up to £80k | Fully Remote (UK) 💻 Tech Stack: TypeScript, Node.js, React.js, AWS ✅ Slight backend lean We’re on the hunt for a hands-on Senior Engineer to join a fast-moving team delivering real, production grade systems. This isn’t R&D or proof-of-concept work, they’re shipping cloud-native, AI-enabled products that customers actually...

About the Job This position is for a Senior Software Engineer with a minimum of 5 years of experience in backend development and a passion for building robust, scalable systems. We are looking for an engineer with a strong background in the C# .NET ecosystem, and a preference for candidates with significant experience on AWS. Are you ready for a challenge? We’re looking for a dynamic software...

Senior Performance Engineer - UK Ready to Make a Real Impact? Join e-STORAGE! Who We Are Welcome to e-STORAGE, a proud member of the Canadian Solar Inc. (NASDAQ: CSIQ) family! We’re leading the way in designing, building, and integrating advanced battery energy storage systems for utility-scale projects. Our mission? To accelerate the world’s renewable energy transition and create a more...

Senior Rust Engineer UK, fully remote (Must be based in the UK now) Sadly no sponsorship possible Up to £95K Skills: Rust | Backend Systems | gRPC | Postgres | Integrations I’m partnering with an early-stage, product-led startupbuilding a platform for transport operations - frankly, one of the most complex, real-time environments in the world. The team are already profit making with runway...

We are currently supporting a client who is looking to hire a Senior RF Engineer on a full-time permanent basis. This role offers the opportunity to work on a range of advanced RF and electronic systems within a technically driven engineering environment. Key duties will include but are not limited to: - Designing and developing RF circuits and subsystems. - Taking designs from initial concept...

You will be responsible for the entirety of the back end features of the products.

You will be in charge of building scalable backend services and awesome messaging queues.

You will be responsible for developing a Python-based back end platform that's handling 100,000+s of interactions daily.

You will have the satisfaction of working with a supportive and experienced team of subject matter experts, in a state-of-the-art electronics lab containing the latest test and measurement equipment (spectrum/network analysis/anechoic chambers). Key desired skills and experience

Senior Full Stack Engineer | Up to £110K | One of the UK's fastest growing AI platforms | UK Remote | React/Node/TypeScript I am currently working with one of the fastest-scaling platforms in the creator economy which is a creator-first, AI-powered product that enables creators around the world to directly monetise their audiences. Every system you build will operate at serious global scale. 🎯...

Senior Backend Engineer | Fully Remote UK | £70,000-£75,000 | Python | Django | AWS Location: Fully Remote - Candidates MUST be UK based Salary: £70,000-£75,000 + benefits Tech Stack: - Backend: Python (Django) - Frontend: React - Cloud Systems: AWS, Docker Are you a Senior Backend Engineer who enjoys taking ownership of real production systems and shaping how a platform evolves as it...

Reports to: Technology Director / Executive Sponsor Location: Remote with occasional travel to London (2 times a month) Contract: Full-time, permanent Base Salary: £70,000 – £80,000 location and experience dependent + 10% company bonus scheme and sales commission scheme Why This Role Exists Serve Legal is entering a new chapter: evolving beyond compliance auditing into AI enabled,...

Senior Electronics Test Engineer Permanent | Southend‑on‑Sea Salary: £35,000–£40,000 (DOE) An exciting opportunity has arisen for a Senior Electronics Test Engineer to join a growing electronics manufacturing team. This role is ideal for someone with strong technical capability, excellent organisation, and a passion for delivering high‑quality electronic products. Key Responsibilities -...

Our client, an operational technology and digital transformation company, is recruiting for a Senior/Lead Protection & Control Systems Engineer to join their business in Staffordshire. Position Title: Senior/Lead Protection & Control Systems Engineer Position Type Permanent Start Date: ASAP Location: Remote from UK Contact: Ashish Rastogi| +44 151 808 1029 Job Description: - As part...

Senior Golang Engineer - we are partnered with a stealth start-up company based out of London that are utilising AI to build the next generation of software. Golang Engineers will be highly skilled coding with Go and potentially have a background with other backend related languages too such as NodeJS or Python. Required: - 3+ years of relevant work experience working with Golang. - 5+ years of...

You will design and deploy robust frontend client, backend services, infrastructure automation, and cloud-native solutions by utilising your software development knowledge and your DevOps proficiency across AWS and GCP.

You will shape how our engineers build, test, release, and monitor software, ensuring frictionless workflows while keeping ownership of business logic, test quality, and development practices firmly with the product engineering teams.

Job Description A Senior PCB Design Engineer skilled in PCB design and Layout (using Altium) will use their expertise to contribute to the development of a range of products within commercial, Defence and industrial sectors. Youll bring knowledge of Surface Mount Technology, Design for Manufacture, IPC Standards for high reliability products as well as experience of working with RF...