Senior Front End Engineer

Ovii's Interpretation of the Role

Blitzy seeks a senior frontend engineer to own and evolve the UI layer of its AI‑driven software platform. The role blends hands‑on development with technical leadership, shaping architecture, standards, and mentoring junior engineers. You’ll work onsite in Cambridge, collaborating directly with the CTO and product teams.

Role Snapshot

• Lead frontend architecture and technical decisions
• Define and enforce engineering standards
• Build high‑performance, responsive UI
• Mentor and code‑review junior engineers
• Collaborate cross‑functionally with product, design, and backend
• Drive adoption of new tools and frameworks

Must-Have Requirements

• JavaScript/TypeScript
• React.js
• State management (Redux, MobX, Zustand)
• Modern build tools (Webpack, Vite, esbuild)
• Web performance optimization
• Frontend testing frameworks (Jest, React Testing Library, Playwright, Cypress)
• Responsive design & cross‑browser compatibility
• frontend development
• React
• state management
• performance optimization
• testing frameworks
• responsive design

Nice-to-Have Signals

• GraphQL
• WebAssembly
• Micro‑frontend architecture
• Open‑source contributions
• Advanced animation libraries (Framer Motion, React Spring)
• Accessibility (WCAG)
• Design systems & component libraries
• AI coding tools (Copilot, Claude, etc.)
• Prompt engineering for AI‑generated code
• micro‑frontend architecture
• AI‑assisted development
• accessibility standards
• design systems

Work Setup

• Location: Cambridge, United States
• Work mode: ONSITE
• Employment type: Full-Time

What You'll Likely Work On

• Architect and implement sophisticated frontend solutions for real‑time AI interactions
• Establish and evolve frontend engineering standards, patterns, and best practices
• Build responsive, performant interfaces that meet sub‑second interaction goals across browsers and devices
• Refactor existing codebases to reduce technical debt while delivering new features
• Mentor junior engineers through code reviews, guidance, and onboarding
• Collaborate with product, design, and backend teams to deliver cohesive user experiences
• Evaluate, prototype, and adopt new technologies or frameworks that improve velocity and quality
• Define and maintain a component library and design system foundation

Good Fit If You Have

• Thrives in a fast‑paced, high‑growth startup environment
• Passionate about leveraging AI tools to accelerate frontend development
• Strong communicator who partners effectively with product, design, and backend stakeholders
• Demonstrated ability to scale frontend practices and mentor growing teams