Senior JavaScript Developer

Senior Full Stack JavaScript Developer Salary: £60,000 - £80,000 base salary plus benefits, perks, and healthcare options Location: Cardiff - Hybrid We're looking for a Senior Full Stack JavaScript Developer to join a fast-moving engineering team building modern web and mobile applications that deliver real impact. You'll lead technical delivery, mentor engineers, and help shape scalable, secure solutions across projects involving cutting-edge technologies including AI, cybersecurity, and autonomous systems. What you'll do: Lead and mentor developers, driving engineering best practices Build scalable web & mobile apps using JavaScript, Node.js, React/Angular/Vue Design and develop robust front-end and back-end systems Apply TDD and modern development practices Collaborate with architects, clients, and cross-functional teams Use AI tools (e.g. GitHub Copilot) to enhance delivery and qualityWhat we're looking for: Strong full stack JavaScript experience (Node.js + modern frameworks) Experience with Express.js, Nest.js, or Hapi.js Front-end expertise in React, Angular, Vue or similar (including Remix.js) Strong HTML5, CSS3, JavaScript (ES6+), TypeScript skills Experience in a senior/lead role with mentoring responsibility Passion for building scalable, high-quality softwareWhy join us? Work on meaningful, high-impact projects in a flexible, hybrid environment where innovation, collaboration, and wellbeing are genuinely prioritised. If you're ready to take the lead on exciting engineering challenges, we'd love to hear from you