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 quality

What 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
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