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

Job Details

Company
Sanderson
Location
City of London, London, United Kingdom
Posted