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US Mobile

Multinetwork wireless carrier with customizable plans

Staff Frontend Engineer

Frontend EngineeringConfirmed live in the last 24 hours
Full-timeMontreal, QC, CanadaCA$140k - CA$230k /yrHybrid

About the Job

Requirements

  • At least 8 years of front-end engineering experience building production-grade user interfaces.
  • Proficiency in TypeScript, React, and CSS-in-JS or equivalent styling approaches.
  • Experience with state-management and data-fetching libraries such as TanStack Query, Redux, or Zustand.
  • A strong eye for user-experience and user-interface detail, accessibility, and responsive design.
  • Comfort handling legacy code, varied device support, and cross-platform consistency.
  • Ability to define and deliver high-leverage solutions with minimal oversight.

Responsibilities

  • Build a state-driven user interface that adapts to network-specific quirks.
  • Support legacy and new plans simultaneously.
  • Create accessible, a11y-first interfaces that work across platforms.
  • Work on mission-critical projects, including a next-generation agentic AI chatbot and customer-facing interfaces for phone-line control, usage monitoring, and e-commerce.
  • Lead and contribute to modern front-end features using React, TypeScript, and CSS.
  • Design and build user-interface components for web and React Native applications.
  • Architect scalable systems that support millions of user interactions across different networks.
  • Champion accessibility and performance as first-class concerns.
  • Collaborate with backend, product, and design teams to develop data-informed solutions.
  • Use emerging technologies such as Rust when performance or architecture demands.
  • Drive and mentor a high-autonomy, high-impact engineering culture.

Desired Qualifications

  • Experience with Rust, mobile development using React Native, or telecom-related applications.

About the Company

US Mobile

Multinetwork wireless carrier with customizable plans

US Mobile provides wireless service by letting customers switch between all three major networks to deliver nationwide 4G LTE and upcoming 5G connectivity. Customers choose flexible, customizable plans with features like high-speed international roaming, AI-driven plan savings, and a range of perks; service access is supported by a user-friendly app, real-time dashboards, and 24/7 live support. The platform enables seamless connection for phones, drones, cars, watches, and trackers, backed by 4G coverage for over 300 million Americans and international calling to more than 200 countries. Unlike typical carriers, US Mobile emphasizes network switching, tailored plans, and AI-assisted savings to fit individual and business needs. Its goal is to connect the next billion wireless devices to nationwide networks, positioning itself as a key player in the evolution of wireless connectivity.

Company size
501-1,000
Company stage
Series A
Total funding
$46.5M
Headquarters
New York City, New York
Founded
2014

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