javascript engineer jobs in Chelmsford

Senior Full-Stack Engineer - Go/JavaScript Salary: £80,000 - £90,000 Location: Fully-remote Tech: Go, JavaScript, .NET About the role: We’re working with a leading organisation in the legal sector, renowned for their award-winning approach to technology-driven innovation, in support of their efforts to strengthen their growing SaaS team. They are looking for a senior software engineer with...

Lead .NET Software Engineer/Architect (Azure / Event-Driven Architecture) Location: Fully Remote Length: 3 month Inside IR35 Contract (Extension Available) We’re seeking a Lead .NET Engineer to take ownership of architecture, design, and delivery across high-scale, event-driven services powering millions of user notifications and messages. You’ll play a key role in shaping our technology...

You will mentor a small team of 3 talented developers while remaining hands-on with coding and solution design. You’ll help define how software is built, scale systems, and influence the technical direction of a globally used SaaS product. You’ll be supported by a collaborative leadership team that values technical excellence, autonomy, and personal growth.

Principal Java Developer – Fully Remote The Opportunity Ocho is partnering with a fast-growing, product-led fintech that’s building out a brand-new Development Centre from the ground up to deliver an innovative Greenfield payments platform. As a Principal Java Developer, you’ll be hands-on in designing and developing backend, service, and portal systems that power secure, scalable payment...

Senior Java Software Engineer 📍Remote UK | 🌍 Global Fintech | 💳 Merchant-First Payments Ecosystem A high-growth global fintech, renowned for delivering world-class payments-related software and technology, is looking to expand its engineering team. As the company continues to scale its platform to meet growing demand, they’re seeking experienced engineers to join their collaborative,...

You will be expected to understand how data and logic connect end to end, building and integrating APIs, working with asynchronous functions, and managing both manual and automated data operations. A solid grasp of how React, Node. js, and database layers interact is key.

QA Engineer - £480 inside IR35 Contract (Remote, once a quarter in Cardiff) - Ruby Experience Please note: This is primarily a remote role; however, candidates must be UK-based and able to attend the office once per quarter. La Fosse is partnering with a leading software company to recruit a QA Engineer on a 6-month contract. This role will focus on supporting the migration of a legacy system...

You will be responsible for writing clean and maintainable code that aligns to their business requirements whilst ensuring all engineering work is covered by suitable unit tests within the team. You’ll collaborate with other Software Engineers, Product Owners, Scrum Masters and internal stake holders to support standards, growth and discipline within this product development team.

Software Development Engineer in Test (Fixed Term Contract – 14 Months Maternity Cover) Location: Hybrid – travel to our Bideford HQ when required Contract Type: Fixed Term (14 months maternity cover) Reports to: QA Lead We’re looking for a Software Development Engineer in Test (SDET) to join our QA team on a 14-month fixed-term contract. You’ll play a key role in ensuring the performance and...

Would you like to join a cyber security SaaS company at the forefront of vulnerability scanning and security research? Do you have experience in a software support role for a SaaS or digital product company, along with strong experience web app and infrastructure technologies? If so, please read on and apply. About AppCheck: AppCheck develops information security software for its end-user...

Role Summary: ServiceMax product experience is a plus, but not mandatory Deliver world class maintenance and support services to ServiceMax customers. With your excellent technical and troubleshooting skills with mission critical SaaS applications, assist ServiceMax customers in using and resolving day to day product questions for the ServiceMax Field Service products.Using your excellent...

Full Stack Engineer – Java | Digital Transformation Projects | Location: Hybrid Remote (occasional ad-hoc travel to client offices dependant on where you are based. London/Glasgow/Newcastle/Manchester.) Type: Permanent | Full-Time Sector: Digital Consultancy / Public Sector / Private Sector Budget: £55,000 + benefits Are you a passionate Full Stack Engineer looking to apply your skills in...

Lead Software Engineer | React & Node.js | SaaS House *Remote First*, Head Office based in Berkshire. Prism Digital have partnered with a super cool UK/US-based company that creates a suite of SaaS Data Visualisation tools which plug into various applications and cloud/infrastructure environments. Our client essentially provides a Data Visualisation tool akin to DataDog, Prometheus etc. that...

Senior React Engineer UK Remote (must be UK-based) 6 Month Contract A fantastic opportunity for a Senior React Engineer to join a fast-paced, product-led tech team working on high-impact, customer-facing web applications. This isn't the kind of contract where you're firefighting legacy issues - you'll be building new features from the ground up in a collaborative, modern engineering...

Senior Software Engineer Location: Remote with Sheffield HQ visits 6 times a year Annual Salary: £60,000- £75,000 We are currently looking for Senior Software Engineers that have experience with our Backend tech stack (TypeScript, Node & AWS) Join Our Engineering Evolution at Twinkl At Twinkl, we're not just building software - we're transforming how millions of educators and learners...

Great opportunity for Senior Full Stack Engineers to work remotely for a UK based deeptech start-up operating in the AI and cloud infrastructure space. The business is backed by a VC giant and is in the early stages of its growth. As a Senior Full Stack Engineer, you’ll become part of the founding team and would be responsible for helping them scale the company by playing a key role in shaping...

We’re building the next generation of merchant-first digital solutions and we’re looking for a Senior Software Engineer to help shape it. You’ll join a small, empowered team that values innovation, collaboration, and real-world impact. What You’ll Do - Design and develop backend, service, and portal systems for our payment platform. - Use modern practices such as BDD and CI/CD to deliver...

Full Stack Software Engineer - HealthTech Join an exciting health-tech founding team who's leveraging cutting-edge technology to transform healthcare delivery. The Founding Full Stack Software Engineer will help shape the technical foundation of their platform. You’ll be instrumental in building scalable, secure applications that handle sensitive healthcare data. You'll have the opportunity to...

You will be joining a rapidly growing scale-up, with the opportunity to work closely with businesses across our ecosystem of brands, agencies, and publishers – it’s a really exciting time to join the Convertr team. At Convertr, we’re building a platform that delivers real value to B2B businesses, driving operational efficiency and improving the quality of lead data.

Principal / Senior-Staff Engineer I’m supporting a global tech company that’s going through an exciting transformation and is looking for a high-impact Principal / Senior-Staff Engineer. This is a hands-on individual contributor role with significant influence across teams and leadership, directly reporting into the CTO. The role is ideal for someone who thrives at the intersection of deep...