Senior Frontend Engineer

NXT Level Technologies

• $175K — $290K *
Information Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • 3+ years of experience in frontend development
  • Proficiency in React and React Native
  • Experience with GraphQL, WebSockets, and SSE
  • Strong understanding of performance optimization techniques
  • Ability to manage end-to-end project ownership

Responsibilities

  • Design and build high-performance React applications using real-time data
  • Contribute to mobile apps for couriers developed in React Native
  • Lead technical design for complex features from conception to deployment
  • Enhance frontend reliability, latency, and scalability in logistics
  • Mentor team members and elevate frontend engineering standards

Benefits

  • Opportunity to shape frontend architecture for real-world operations
  • Work in a fast-paced, engineering-first company culture
  • Collaborative environment with backend and operations teams
  • Access to advanced tech stack to build innovative solutions
  • Engagement in a project with significant real-world impact
Full Job Description
Location: NYC - onsite 5 days per week
Compensation: $175k-$290k

Company Size: 3000+ employees

Total Funding: $1.8B

Visa: transfer only, no new sponsors

Tech Stack: React, React Native, TypeScript, GraphQL, WebSockets, SSE, REST APIs

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.

What will you be doing?
  • 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

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