Senior Frontend Engineer
Cssmerge · New York, NY
About this role
**Who we are** At Picnic, we’re reinventing the way employees experience lunch at work. By partnering with top local restaurants and batching hundreds of orders, we make it easy for companies to offer high-quality, individually packed meals—without fees or tips. Our mission is to create a seamless, affordable, and joyful lunch experience that benefits both employees and employers. **About the role** 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 **What we’re looking for** - 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 **Preferred Qualifications** - 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
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