US Mobile is building the future of wireless communication.

The goal: one unified network open to any person and any device, worldwide. We’re getting there by empowering customers. All three major networks on one phone and one plan, plus home internet from Starlink. 24/7 customer support with real people, empowered to help.

We get real-time feedback from Reddit , surveys, and customer support informing product roadmaps and everything we do. And we’re building innovative systems that scale. A network agnostic tech stack. Agile, cross-functional teams built on trust and mutual respect.

We’re looking for a Staff Front-End Engineer to join our growing engineering team as we scale from 14 to 24 developers. This is a high-impact, high-ownership role where you’ll architect and build fast, accessible, and elegant web and mobile applications used by nearly 1 million subscribers across Verizon, AT&T;, and T-Mobile. Our challenges are both technical and strategic.

Build a state-driven UI that adapts seamlessly to network-specific quirks. Work on mission-critical projects, like our next-gen agentic AI chatbot that’s redefining how customers interact with mobile support such as: Customer centric interface enabling total control over your phone lines, a next generation dashboard to monitor your usages and create an e-commerce expereince that's unmatched in Telco!! Lead and contribute to building modern front-end 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. Champion accessibility (a11y) and performance as first-class concerns.

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. Drive and mentor a high-autonomy, high-impact engineering culture. 8+ years of front-end engineering experience building production-grade UIs. ~ Proficiency in TypeScript, React, and CSS-in-JS or equivalent styling approaches. ~ Experience with state management and data fetching libraries (e.g., A robust eye for UX/UI detail, accessibility, and responsive design. ~ Bonus: Experience with Rust, mobile development (React Native), or telecom-related apps.

Competitive Salary

Flexible working hours Subsidized health benefits (Medical, Dental, Vision) Flexible time off $We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. If you would like more information about how your data is processed, please contact us.

📌 Frontend Developer - React.JS, CSS, HTML (Montreal)
🏢 Us Mobile
📍 Montreal