Senior Frontend Engineer

NxT Level • New York, NY

5d • Onsite

About The Position

We are looking for a Senior Frontend Engineer with 3+ years of experience to build and scale real-time logistics and operations platforms. You'll work across web and mobile surfaces, designing high-performance React applications powered by WebSockets, SSE, and GraphQL subscriptions. This is an opportunity to shape frontend architecture that directly powers real-world food delivery operations during a critical 10 → 100 scale phase. You'll partner closely with backend and operations teams, owning projects end-to-end in a fast-moving, engineering-first culture.

Requirements

• 3+ years of experience
• React
• React Native
• TypeScript
• GraphQL
• WebSockets
• SSE
• REST APIs

Responsibilities

• Design and build high-performance React applications with real-time data via WebSockets, SSE, and GraphQL subscriptions
• Contribute to and shape courier mobile apps built in React Native
• Lead technical design for complex features from initial architecture through production rollout
• Improve frontend reliability, latency, and scalability in a high-throughput logistics environment
• Mentor engineers and raise the bar for frontend engineering across the team

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed