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# Senior Frontend Engineer

- **Company:** PICNIC LLC
- **Location:** New York, NY, United States
- **Experience:** Expert
- **Salary:** $176,000 - $242,000
- **Contract:** Permanent contract
- **Skills:** Computer Programming, Software Debugging, Web Development, Performance Tuning, Software Engineering, Systems Integration, TypeScript, WebSocket, Real Time Systems, Caching, Backend, Build Management, Low Latency, Graphql, React Native, Front End Software Development, Restful APIs
- **Published:** November 7, 2026
- **Apply:** https://www.juju.com/job/28_25303_b2d09bfa1c203e699b6f21ecfcb9ab38

## About the Role

* 3+ years of experience in software engineering, with deep frontend expertise
 * Strong experience with TypeScript and modern web application development
 * Solid understanding of client networking, async programming, performance optimization, caching, and client-side state management
 * Experience integrating with GraphQL and REST APIs
 * Proven ability to lead technical initiatives and influence architecture and best practices
 * Experience mentoring junior engineers and supporting team growth
 * Comfort working outside your immediate comfort zone and adapting as the product and team evolve, * Experience building or operating delivery, logistics, or real-time systems at scale
 * Full-stack experience and an understanding of backend tradeoffs and system design
 * Track record of improving developer productivity through tooling, patterns, or process improvements
 * Familiarity with modern frontend architecture best practices, including performance, security, and usability

## Description

We're looking for a Senior Frontend Engineer to help build and scale Picnic's real-time logistics and operations platforms. This role is ideal for someone who thrives in ambiguity, enjoys working on complex, high-performance systems, and wants to shape frontend architecture that directly powers real-world operations.

You'll work across web and mobile surfaces, partner closely with backend and operations teams, and play a key role in defining how we build, ship, and scale frontend systems at Picnic.

What You'll Do

 * Design and build high-performance React applications powered by WebSockets, SSE, and GraphQL subscriptions.
 * Contribute to and shape our courier mobile apps built in React Native.
 * Lead technical design for complex features and systems, from initial architecture through production rollout
 * Own projects end-to-end, driving execution, technical decisions, and cross-functional alignment
 * Improve frontend reliability, latency, and scalability in a real-time, high-throughput environment
 * Lead debugging, incident response, and performance investigations for frontend systems
 * Mentor and coach engineers, raising the bar for frontend engineering across the team