Javascript Developer

Contract: Lead Full-Stack JavaScript Developer +Contentful CMS – FTSE100 Investment Manager

• Day Rate: £685 via Umbrella Engagement
• Working Arrangement: Remote

Our client is a leading UK investment company managing assets on behalf of over 1.8 million investors.

Their website is a core part of their digital platform, and we're accelerating a migration to a headless CMS whilst building personalised, seamless client experiences across devices and channels.

We're looking for a passionate Senior Full-Stack Engineer to join us on that journey.

The Role:

You'll build and maintain full-stack web applications, contribute to architectural decisions, and help drive engineering best practices across the team. You'll work in a cross-functional squad, mentor peers, and play a key role in shaping how we deliver digital experiences at scale.

Responsibilities:

• Build and maintain full-stack applications using TypeScript, Next.js, Node.js and React
• Develop and maintain a design component library from Figma designs
• Write high-quality, secure, tested and performant code
• Own and improve automated testing strategies (unit, integration, e2e)
• Contribute to CI/CD and deployment processes
• Lead architectural planning and trade-off discussions
• Provide coaching and mentoring to peers
• Proactively support and maintain existing applications

Experience & Knowledge:

• Strong hands-on experience with TypeScript, React, Next.js, Node.js
• Experience with AWS, Kubernetes, Docker and Lambda functions
• Experience working with Contentful CMS (content modelling, delivery APIs)
• Familiarity with infrastructure as code
• Testing experience with Jest and Playwright
• Understanding of RESTful APIs and microservices principles
• Comfortable working in an Agile, DevOps environment
• Proficient with Git and CI/CD pipelines (GitLab preferred)
• Solid knowledge of HTML, CSS (Tailwind/SCSS) and web accessibility

Desirable:

• Experience with MarTech tools (A/B testing, analytics, personalisation, tag management)
• Experience deploying Next.js applications via Netlify