Senior Frontend Engineer owning the customer-facing React experience at AgentSync. Build features, design systems, and AI-assisted UX while partnering with Product; own design/UX end-to-end in a lean team. Requires 5+ years React expertise, strong design sensibility, and full-stack awareness.
160k – 185k
Hybrid5+ YOEFrontend Engineering
About the role
What You’ll Do
Build high-quality, accessible, performant features in our React app across multiple product areas
Help shape the path forward for our frontend architecture
Build and extend a shared component library and design system for consistent UX across product areas
Use AI tools across the development lifecycle — Claude, Design where it makes sense, Figma-to-React, code generation, review, and testing — to move faster and raise quality
Identify opportunities to embed intelligent, AI-assisted experiences into the product
Partner closely with Product and own design and UX end to end
Write clean, well-tested code and focused pull requests, and give timely, high-quality reviews
Mentor engineers and advocate for a consistent, high-quality user experience across every surface
What You’ll Bring
5+ years building and shipping production, mobile-responsive web applications
Deep expertise in React, plus modern frontend tooling, state management, and testing
Strong web fundamentals — HTML, CSS, accessibility, responsive design, and performance
A strong design and UX sensibility — comfortable owning the experience without a dedicated designer
Experience building or contributing to shared component libraries and design systems
Proven use of AI tools to accelerate frontend work, with a point of view on where they help and where they don't
Comfortable weighing frontend architecture tradeoffs — e.g. micro-frontend vs. monorepo — and deciding when each is the right fit
Willingness to lean into the backend (Java/Go) when needed, with a solid understanding of how the full system fits together
Expert at writing clean, maintainable code and clear pull requests, and giving thoughtful, high-quality reviews
Clear communicator with a strong ownership mentality — you estimate and deliver work reliably, and surface risks and tradeoffs early
Familiarity with AWS is beneficial
A scrappy, gritty, roll-up-your-sleeves mentality — you thrive with ambiguity and ownership
Total Compensation
$160K-$185K base salary
Annual company bonus program
Equity in the form of stock options
100% employer paid premiums on select Medical, Dental, Vision plans
401(k) retirement savings plan with HSA employer contributions
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