Sr. Software Engineer, Frontend

Firstup • Bachelor's Degree • Node JS • Ruby • TypeScript • JavaScript • 4 months ago
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Salary
≈ $53k – $173k per year (Estimated)
Location
Remote (United Kingdom)
Seniority
Senior · 5+ years exp
Employment
Full-Time
Overview
Company
Impact
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Firstup

Firstup is the leading employee communication platform that helps organizations connect with their workforce, improve employee engagement, and drive business results. With Firstup, you can: Create and distribute engaging content to your employees Track and measure the impact of your communication programs Build a culture of open communication and transparency Firstup is used by some of the world's largest and most successful organizations, including McDonald's, Marriott, and Nestle. Firstup is a great way to keep your employees informed, engaged, and motivated.
firstup.com • Chicago • UTC-06:00 • Communication & Collaboration • Professional Services • Human Resources

Job Summary

The Sr. Software Engineer (FE) will lead the development of scalable, high-performance frontend architectures. You will drive engineering excellence through modern React patterns, robust testing strategies, and the strategic use of AI-assisted development tools to accelerate delivery without compromising quality.

Responsibilities

  • Core Engineering: Build scalable frontend applications using modern React patterns and a component-driven architecture.
  • Systems Design: Own the design and implementation of a reusable, accessible component library and documentation.
  • Testing & Quality: Define the frontend testing strategy (Unit, Integration, E2E) including visual regression and user interaction coverage.
  • Performance & Reliability: Optimize client-side performance and ensure production readiness through observability, error monitoring, and rapid incident resolution.
  • AI Integration: Leverage and advocate for AI-assisted tools (e.g., GitHub Copilot, Claude) to accelerate development while maintaining rigorous engineering judgment and accountability for code correctness.
  • Leadership: Drive team-wide best practices, conduct quality code reviews, and mentor engineers to elevate overall engineering quality.
  • Collaboration: Partner with Product and Design to translate requirements into intuitive UI, making informed technical trade-offs in the face of ambiguity.

Minimum Qualifications

  • Experience: 5+ years building reliable, high-performance frontend applications at scale.
  • Core Stack: Expertise in React (Hooks, State Management), TypeScript, and modern tooling (Vite, Webpack).
  • Testing: Proficiency with Jest, React Testing Library, and Cypress/Playwright.
  • UI/UX: Proven experience building design systems or component libraries with a focus on WCAG accessibility.
  • AI Literacy: Demonstrated ability to use and critically validate AI-assisted coding outputs (e.g., Claude, Copilot).
  • Education: Bachelor’s in CS or equivalent practical experience.

Preferred Qualifications:

  • Fullstack: Experience with Ruby on Rails, Node.js, or AWS/Cloud infrastructure (Docker, Kubernetes).

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