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Sr. Software Engineer, Frontend

3 months, 3 weeks ago
United Kingdom
Full-time
Senior
Software Engineer
Software Development
AWS Cypress Docker Jest Kubernetes Node.js Playwright React Ruby on Rails TypeScript
Apply Now
Firstup

Firstup

Firstup offers an intelligent communication platform designed to engage employees throughout their entire employment journey, providing insights that help organizations support, promote, and retain their workforce effectively.

Professional Services
251-1K
Founded 2008
$47M raised
View All Jobs 10

Description

  • Build scalable frontend applications using modern React patterns and a component-driven architecture.
  • Own the design and implementation of a reusable, accessible component library and its documentation.
  • Define and maintain the frontend testing strategy across unit, integration, E2E, visual regression, and interaction coverage.
  • Optimize client-side performance and ensure production readiness through observability, error monitoring, and incident response.
  • Leverage AI-assisted development tools to accelerate delivery while maintaining code quality and engineering judgment.
  • Drive team-wide engineering best practices, conduct high-quality code reviews, and mentor other engineers.
  • Partner with Product and Design to translate requirements into intuitive user interfaces and make technical trade-offs.
  • Collaborate across teams to deliver reliable frontend systems in a fast-changing, ambiguous environment.

Requirements

  • 5+ years of experience building reliable, high-performance frontend applications at scale.
  • Strong expertise in React, including Hooks and state management.
  • Strong proficiency in TypeScript and modern frontend tooling such as Vite and Webpack.
  • Experience with frontend testing tools including Jest, React Testing Library, and Cypress or Playwright.
  • Proven experience building design systems or component libraries with WCAG accessibility in mind.
  • Demonstrated ability to use and critically validate AI-assisted coding tools such as Claude or GitHub Copilot.
  • Bachelor’s degree in Computer Science or equivalent practical experience.
  • Preferred: experience with Ruby on Rails, Node.js, or AWS/cloud infrastructure such as Docker and Kubernetes.

Benefits

  • Excellent PTO program.
  • Great health benefits.
  • Remote work.
  • Casual and friendly work environment.
  • Leadership team focused on personal and professional growth.
  • Inclusive environment where ideas are rewarded.
  • Equal employment opportunity commitment.

Interested in this position?

Apply directly on the company website

Apply Now

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