Lead Frontend Engineer

US Mobile•New York City, NY

About The Position

US Mobile is building the future of wireless communication with the goal of one unified network open to any person and any device, worldwide. They are empowering customers with multiple major networks on one phone and plan, plus home internet from Starlink, offering no lock-in, no commitments, and custom-fit plans. They pride themselves on 24/7 customer support with real people and use real-time feedback from various channels to inform product roadmaps. US Mobile has been recognized by The Wirecutter as their favorite cellular carrier and by Consumer Reports as the top-rated mobile carrier for two consecutive years. They are developing innovative, scalable systems with a network-agnostic tech stack and agile, cross-functional teams built on trust and mutual respect. This role is for individuals who work fast, flexibly, and collaboratively without compromising standards. The company is looking for a Lead Frontend Engineer to help build and grow their frontend team, which is set to double in size. This is a high-impact, high-ownership role involving managing and mentoring a team of engineers while architecting and building fast, accessible, and elegant web and mobile applications used by over 1 million subscribers. The challenges are both technical and strategic.

Requirements

12+ years of frontend engineering experience building production-grade UIs, including experience in a technical leadership or people management role
Bachelor's degree in Computer Science, Engineering, or a related technical field
Demonstrated experience managing, mentoring, and growing frontend engineers, including hiring and performance management
Proven ability to influence technical direction and drive architectural decisions at a team or organizational level
Strong stakeholder management skills — able to represent frontend engineering’s perspective persuasively in front of executives, PMs, and cross-functional partners
Comfort operating in a fast paced environment — wearing multiple hats across engineering, hiring, and cross-functional work
Experience partnering with Talent/Recruiting to build and scale engineering teams — defining roles, running hiring processes, and closing candidates
Proficiency in TypeScript, React, and CSS-in-JS or equivalent styling approaches
Experience with state management and data fetching libraries (e.g., Tanstack Query, Redux, Zustand)
A strong eye for UX/UI detail, accessibility, and responsive design
Comfort dealing with complexity: legacy code, varied device support, and cross-platform consistency
A self-starter who can define and deliver high-leverage solutions with minimal oversight

Nice To Haves

Experience with Rust
Mobile Development (React Native)
Telecom-related apps

Responsibilities

Influence technical direction and architectural decisions across frontend systems, balancing pragmatism with long-term scalability
Build a state-driven UI that adapts seamlessly to network-specific quirks
Support legacy and new plans simultaneously
Create elegant, highly accessible (a11y-first) interfaces that work across platforms
Lead and contribute to building modern frontend features using React, TypeScript, and CSS
Design and build UI components for both web and React Native applications
Architect scalable systems to support millions of user interactions across different networks
Collaborate closely with backend, product, and design teams to drive elegant, data-informed solutions
Work with emerging technologies like Rust where performance or architecture demands
Set and uphold engineering standards and best practices across your team
Manage, mentor, and grow a team of frontend engineers — owning hiring decisions, performance management, career development, and day-to-day team health
Partner closely with Talent/Recruiting to define hiring needs, shape interview processes, and build out the frontend engineering team as we scale.