Front End Engineer, Sr.

Role overview

Senior and Staff Front End Engineers to build and scale consumer-facing web and mobile web applications that serve millions of users.

Responsibilities

• Own and deliver end-to-end development of major consumer-facing features (technical design through launch, experimentation, and iteration).
• Drive front-end architecture decisions, including:
  • component design
  • state management
  • data-fetching strategies
  • performance optimization
• Build and optimize key user flows such as event discovery, seat selection, and checkout (speed, reliability, UX).
• Collaborate with Product, Design, and Backend to ship features impacting core metrics.
• Design, instrument, and analyze A/B experiments to validate hypotheses and guide product decisions.
• Implement front-end observability (error tracking, performance monitoring, real-user metrics).
• Contribute to and maintain design-system components and front-end standards.
• Mentor junior and mid-level engineers via code reviews, pairing, and technical leadership.
• Partner with mobile, backend, and platform teams for cohesive cross-platform experiences.

Requirements

Senior Engineer (typical)

• 5+ years of front-end experience delivering complex solutions independently.

Staff Engineer (typical)

• 8+ years of front-end experience with demonstrated leadership (cross-functional direction and mentorship).

Core technical skills

• React and TypeScript
• Modern state management such as Redux Toolkit, Zustand, or React Query
• Front-end testing: Jest, React Testing Library, Playwright, or Cypress
• Web frameworks/patterns: Next.js, SSR/SSG, and edge-rendering patterns
• Data fetching: REST and GraphQL
• Build tools/version control and CI/CD practices

Product/UX & collaboration

• Experiment-driven development (e.g., A/B testing and data analysis)
• Strong UI/UX fundamentals: responsive design, accessibility (WCAG 2.1 AA), and cross-browser compatibility
• Excellent collaboration skills and passion for solving complex problems

Nice to have

• Shared design systems or component libraries
• Experience with React Native and cross-platform mobile development
• Interest/experience in AI tools, web3, or digital goods purchasing flows