firstup - Sr. Software Engineer, Frontend
Requirements
• 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. • Fullstack: Experience with Ruby on Rails, Node.js, or AWS/Cloud infrastructure (Docker, Kubernetes).
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.
Benefits
• Because you care - about people, the work you do, and the connections you make. Work is such a large part of life; it only makes sense to make it awesome. • If you want to engage brilliant minds in a high-growth and inclusive environment where ideas are rewarded regardless of who they come from, join us. This is a rapidly changing space so if you thrive on ambiguity, are hungry for a challenge, and have the guts to speak your mind, you could be a perfect fit. • We offer an excellent PTO program, great health benefits, a casual and friendly environment, remote work, and a leadership team who truly believes in your growth – both personally and professionally.
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