Frontend/Full-Stack Engineer

Cupertino, California, United StatesOnsiteFull Time$100,000–$149,998 /yrPosted 2 months agoHidden Gem · YC Startup

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Role summary

Peppr AI is seeking a founding Frontend/Full-Stack Engineer to own features end-to-end, from UI/UX design to implementation, for their agentic AI platform. The role involves creating intuitive interfaces for enterprise users using React, shadcn, and react-router, integrating with AI backend systems. Responsibilities include building scalable frontend architecture, design systems, and optionally backend solutions with FastAPI and PostgreSQL. The ideal candidate has 3+ years of experience shipping production React applications with TypeScript/JavaScript, familiarity with UI libraries, state management, and responsive design. Experience with Figma, AI workflows, FastAPI, Docker, and CI/CD is a plus. This role offers the chance to shape user experience and technical architecture in a dynamic startup environment.

**What You'll Do** As a founding frontend/full-stack engineer at Peppr AI, you'll own features end-to-end—from UI/UX design through implementation—creating the interfaces that make our agentic AI platform intuitive and powerful for enterprise users. You'll work with React, shadcn, react-router, and FastAPI to build polished experiences that seamlessly integrate with our AI backend systems.

Key responsibilities include:

* Design and ship polished interfaces with React, shadcn, and react-router
* Take ownership of full features: mockup → implementation → QA → deployment
* Collaborate closely with product & design teams to craft delightful user experiences
* Build reusable, scalable frontend architecture and consistent design systems
* Optionally tie in backend work using FastAPI and PostgreSQL to deliver complete solutions

**What We're Looking For** We're seeking a proactive engineer who can own features end-to-end and ship fast in a dynamic startup environment. You should have:

**Required:**

* 3+ years shipping production React applications with strong TypeScript/JavaScript skills
* Experience with UI libraries/components (shadcn or similar frameworks)
* Familiarity with react-router, state management, form handling, and responsive design
* Basic design sense—experience in Figma, design systems, or styling frameworks
* Bonus: Experience building UI for AI-driven workflows or agent interfaces

**Nice-to-Have:**

* Backend experience with FastAPI or Python for full-stack development
* Production experience with Docker, CI/CD, and some AWS or Kubernetes basics
* A product mindset and experience shipping end-to-end features
* Comfort with ambiguity and rapid iteration in a startup environment

This role offers the opportunity to shape both our user experience and technical architecture while building interfaces for the future of enterprise AI.

Ready to apply?

You'll be redirected to Peppr AI's application page.