Senior Front End Engineer

About Blitzy

Blitzy is a Cambridge, MA based AI software development platform on a mission to revolutionize the software development life cycle by autonomously building custom software to unlock the next industrial revolution. We’re transforming how enterprises build software, turning enterprise requirements into production‑ready code with an agentic software development platform that can autonomously execute 80% of the quantum of software development work.

We’re backed by multiple tier 1 investors, and have proven success as founders of previous start‑ups.

Location:

1 Kendall Square, Cambridge, MA (On‑Site)

Compensation: $150,000 - $185,000

We’re looking for an exceptional Senior Frontend Engineer to join our founding team and lead our frontend engineering efforts. You’ll work directly with our CTO to build sophisticated, responsive interfaces that make complex AI capabilities accessible to enterprise developers. This is a hands‑on technical leadership role where you’ll architect our frontend systems, establish engineering best practices, and mentor junior engineers as we scale.

• You architect and implement sophisticated frontend solutions that handle complex state management, real‑time AI agent updates, and intuitive developer workflows.
• You establish frontend engineering standards, patterns, and best practices that scale with our growing team.
• You build responsive, performant interfaces that work seamlessly across browsers and devices while maintaining sub‑second interaction speeds.
• You refactor and modernize existing frontend code, eliminating technical debt while shipping new features.
• You make architectural decisions that balance immediate product needs with long‑term scalability and maintainability.
• You mentor junior frontend engineers, conducting code reviews and elevating the team’s technical capabilities.
• You collaborate closely with product, design, and backend teams to deliver cohesive user experiences.
• You evaluate and introduce new technologies and frameworks that improve our development velocity and product quality.
• You maintain high standards for code quality, performance, testing, and accessibility.
• You become a trusted technical advisor to leadership on all frontend architecture decisions.

• Frontend architecture and technical decision‑making for our core platform.
• Refactoring existing frontend systems to improve performance and maintainability.
• Building new platform features that showcase our AI capabilities to enterprise users.
• Establishing component library and design system foundations.
• Setting up testing frameworks and CI/CD pipelines for frontend.
• Code review processes and engineering standards.

• Mentoring and providing technical guidance to junior frontend engineers.
• Performance optimization and monitoring systems.
• Frontend infrastructure and build tooling improvements.
• Cross‑team collaboration on API design and integration patterns.
• Technical documentation and onboarding processes.

• Scaling the frontend engineering team and practices.
• Defining frontend engineering hiring standards and interview processes.
• Contributing to product and technical strategy discussions.
• Building advanced features like real‑time collaboration, AI‑powered UIs, and developer tools.

• 10+ years of frontend development experience with a proven track record of building complex, production‑grade applications.
• Expert‑level knowledge of modern JavaScript/Type Script with deep understanding of language features, patterns, and best practices.
• Deep expertise in React.js and its ecosystem including hooks, context, performance optimization, and modern patterns.
• Strong understanding of state management (Redux, MobX, Zustand, or similar) and when to apply different patterns.
• Experience with modern build tools (Webpack, Vite, esbuild, etc.) and their configuration.
• Proven ability to architect scalable frontend systems that handle complexity while remaining maintainable.
• Experience with responsive design and cross‑browser compatibility, ensuring consistent experiences across devices.
• Strong understanding of web performance optimization…