javascript engineer jobs in Sheffield

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...

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...

English Speaking Full-Stack JavaScript Developer We’re building a next-generation customer management platform used by tens of thousands worldwide. Our product helps modern businesses put their customers at the center, managing workflows, insights, and automation at scale. As a Full-Stack JavaScript Developer, you’ll join a global engineering team shaping one of the most critical systems for...

Job Summary: We are seeking a detail-oriented Software Quality Assurance (QA) Engineer to ensure the quality and reliability of software applications through rigorous testing and validation. The ideal candidate will have a strong understanding of QA methodologies, excellent analytical skills, and experience in both manual and automated testing. Key Responsibilities: - Design, develop, and...

Senior Security Engineer, Cloud Salary: up to £110,000 + bonus + benefits Location: UK – 100% Remote This company is undergoing a major cloud transformation and is looking for a Senior Security Engineer with a specialism within Cloud to help shape and secure its modern cloud infrastructure. You’ll work across engineering teams to design scalable, secure cloud infrastructure and embed best...

Machine Learning Engineer – Large Language Models (LLMs) We’re partnered with a leading tech organisation at the forefront of Generative AI innovation, hiring a Machine Learning Engineer to help build the infrastructure, workflows, and systems that bring cutting-edge LLM research to life. What You’ll Do: - Design and build tools, methods, and infrastructure to advance large language model...

Principal Software Engineer Cloud Engineering Scale-up c£100k North Scout are partnered with a fast-growing cloud engineering business that’s doubled revenues, expanded its technical team, and earned a strong reputation for delivering complex cloud programmes with pace and precision. They’re looking for a Principal Software Engineer to take a leading role across architecture, design and...

Solutions Engineer – AI-Powered PropTech Remote | Full-Time | Up to £60k (BOE) Excited by the idea of joining a fast-growing AI proptech startup and being the very first hire in a brand-new customer solutions team? AskVinny (Vinny Technology Limited) is shaking up property management. They use AI to automate workflows, improve tenant communications, and make life easier for landlords, letting...

You will translate big ideas into shippable, high quality products by collaborating closely with engineers and designers to solve complex challenges.

You will bring over 7 years of software engineering experience with deep expertise in JavaScript, TypeScript, and React.

You will benefit from team retreats and a professional growth budget to support your development.

You must be a sole British citizen and eligible for high-level Security Clearance (SC) to apply for this role.

CMC looking for a Cloud Data Integration Software Engineer to support the delivery of a 7.5MWh / 4.5MW energy storage project, ensuring reliable data transfer and cloud integration across our energy systems. The role will focus on updating and extending our PostgreSQL database hosted on DigitalOcean, migrating data transfer from GRE over 4G/5G to a more secure OpenVPN over WAN setup, and...

Title: Forward Deployed Engineer – AI & Customer-Facing Technical Leader Location: Remote Travel: Customer visits 4–5 days/month; occasional team gatherings Salary: Senior: €130–150k base + growth trajectory Principal: €160–200k base + package discussion Tech: Python, JavaScript, Azure, AWS, AI, LLM's, RAG Industry: AI Consultancy The Role We’re looking for talented engineers to join our...

The 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 for a talented and motivated Senior Software Developer to join the FourteenFish team at Optum UK. You’ll be part of a...

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...

🤖 Experienced Full Stack Engineer | AI Robotics Start-Up | Fully Remote (UK) 🤖 Join a very exciting AI robotics start-up at the forefront of autonomous systems. We’re looking for a Full Stack Engineer passionate about building intelligent robots, AI-driven automation, and cutting-edge software that interacts with the real world. This is a unique opportunity to work fully remotely, collaborate...

Senior Software Engineer .Net Location: UK remote | We are working with a high-growth global fintech, renowned for delivering world-class payments-related software and technology. This company is building the next generation of capabilities that power a merchant-first ecosystem. They believe that focused, empowered teams can achieve great things. You'll be joining a curious, driven, and...

Job Opportunity: PHP Developer (Laravel) Contract Type: Permanent Location: Barnsley – Rare visits to South Yorkshire office Salary: £45,000 We're working with a tech-led business that's looking for a hands-on Mid-level PHP Developer to join their team on a contract basis. This is a high-impact role focused on modernising legacy infrastructure, building scalable backend systems, and...

Senior Ruby on Rails Engineer Location: Hybrid or Remote We’re partnered with clients that are looking to bring in Senior Ruby on Rails Developers. What we’re looking for - 5+ years of experience with Ruby on Rails. - Strong knowledge of RESTful APIs and service-oriented architecture. - Cloud experience with AWS or GCP is an advantage. - Familiarity with front-end technologies (JavaScript,...

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.