Senior Software Engineer, Frontend
Full-time
Firstup
Role Description
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.
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.
Requirements
- Fullstack: Experience with Ruby on Rails, Node.js, or AWS/Cloud infrastructure (Docker, Kubernetes).
Benefits
- Excellent PTO program
- Great health benefits
- Casual and friendly environment
- Remote work
- Leadership team who truly believes in your growth – both personally and professionally
Vacancy posted 10 hours ago
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