Senior Frontend Engineer - Engine

Skills

About the Role

You will take ownership of upholding a high bar for quality through design reviews, code reviews, test strategy, and production readiness. You will collaborate cross-functionally with product, design, and fellow engineers to shape solutions and clarify tradeoffs. You'll architect full-stack, frontend-leaning systems that are small, composable, and resilient to evolving product requirements, and you'll enforce architectural and operational quality. You will champion functional programming principles and immutability, and lead AI-assisted development by using AI assistants and agents for prototyping, scaffolding, refactoring, and exploratory development, then hardening the results through rigorous testing and review. You'll also build and maintain a strong automated test suite spanning unit, integration, component, and end-to-end coverage with fast feedback loops in CI.

Requirements

• Bachelor's degree in Computer Science, Engineering, or a related field
• 6+ years of experience building production web applications and 1+ years as a senior engineer
• Expert-level proficiency with TypeScript, strong experience with React, server-side rendered Next.js (or similar), and performant component-driven development (e.g. Reshaped UI)
• Ability to articulate complex technical trade-offs to stakeholders and translate product vision into high-fidelity technical direction
• Demonstrated development of simple, reusable, changeable systems (with examples of refactors, platforming work, or scalable patterns)
• Preference for functional programming and a deep understanding of why immutability is critical in modern frontend development
• Advanced knowledge of the testing pyramid and how to use automated tests as a safety net for rapid, iterative development
• Proven technical leadership through mentorship, delegation, and high-quality code reviews
• Hands-on experience with tools like Cursor (or equivalent AI-augmented IDEs) and all modern coding models
• Practical understanding of where AI is strong vs. where it falls short, paired with sound discernment in its application
• Ability to use AI agents to quickly project multiple approaches, compare tradeoffs, and converge on the best solution without shipping "AI-shaped" code

Responsibilities

• Uphold a high bar for quality through design reviews, code reviews, test strategy, and production readiness
• Partner with product, design, and fellow engineers to shape solutions and clarify tradeoffs
• Design and build full-stack, frontend-leaning systems that are small, composable, and resilient to evolving product requirements
• Enforce architectural and operational quality, catching subtle issues in fast-moving, AI-assisted development
• Champion functional programming principles and immutability to reduce side effects
• Use AI assistants and agents for prototyping, scaffolding, refactoring, and exploratory development, then harden and validate results
• Build and maintain a strong automated test suite of unit, integration/contract, component/UI, and end-to-end coverage with fast feedback loops in CI