Skip to content
AgentSyncAgentSyncDenver, CO

Senior Frontend Engineer

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
  • Flexible PTO, 12 paid holidays, 12 weeks parental leave

Skills

ReactJavaScriptHTMLCSSAccessibilityResponsive DesignFrontend ArchitectureComponent LibrariesDesign SystemsAI ToolsAWSJavaGo
Together AI

Senior Product Engineer

Together AISan Francisco, CA

Senior Product Engineer owning end-to-end frontend for Together AI's Commerce team, focusing on enterprise spend controls, usage-based pricing, metering dashboards, payments, and billing UIs. Requires 4+ years React/TypeScript experience building production UIs, strong API consumption and observability skills.

160k – 230k
On-site4+ YOEFrontend Engineering
Kong

Senior Software Engineer

KongSan Francisco, CA

Own the entire front-end for Volcano, building performant UI systems in Next.js for agent workflows, log views, charts, and LLM-driven tooling while integrating with Go backends.

160k – 200k
Remote5+ YOEFrontend Engineering
Perpay

Senior Software Engineer, Frontend

PerpayPhiladelphia, PA

Builds and leads frontend features using React and Redux, ensuring responsive, accessible UIs. Collaborates cross-functionally, mentors engineers, and drives technical innovation in a fast-paced environment. Requires 5+ years experience.

160k – 200k
On-site5+ YOEFrontend Engineering
ClickUp

Senior Frontend Engineer

ClickUpUnited States

Senior Frontend Engineer builds and architects reusable UI components using Angular and React, collaborates on end-to-end features, ensures performance and test coverage. Requires 5+ years with modern JS frameworks, TypeScript, state management, and strong testing skills.

160k – 210k
Remote5+ YOEFrontend Engineering
ENFOS

Senior UI/UX Engineer 2026

ENFOSDurham, NC

Leads front-end modernization of financial governance platform, architects scalable React-based UI/UX systems, and governs design standards for data-dense enterprise workflows. Requires 5+ years React experience and proven enterprise design system expertise.

160k – 200k
On-site5+ YOEFrontend Engineering