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About the Role

We are seeking a Senior Front-End Engineer to join our growing engineering team. This high-impact role involves architecting and building fast, accessible, and elegant web and mobile applications used by nearly 1 million subscribers. You will tackle both technical and strategic challenges in a venture-backed, hypergrowth company.

Responsibilities

• 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.
• Work on mission-critical projects, including a next-gen agentic AI chatbot for customer support.
• 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.

Requirements

• 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., 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.
• Bonus: Experience with Rust, mobile development (React Native), or telecom-related apps.

Skills

• TypeScript
• React
• CSS
• CSS-in-JS
• State Management
• Data Fetching
• Tanstack Query
• Redux
• Zustand
• UX/UI Design
• Accessibility (a11y)
• Responsive Design
• React Native
• Rust

Location

• US

Work Type

• Full-time

Experience Level

• Senior
• 8+ years

Salary/Compensations

• $160,000 - $250,000 a year

Benefits

• Competitive Salary
• Gym reimbursement
• Commute reimbursement
• Flexible working hours
• Subsidized health benefits (Medical, Dental, Vision)
• Professional development stipend
• Flexible time off

About the Company

• US Mobile is on a mission to revolutionize connectivity by building a software platform for the 21st century, supporting 5G and IoT.
• We have a diverse team from 20+ countries and have been recognized by Forbes as a top 500 best startup employer in the US.
• We are a venture-backed company entering hypergrowth, ranked 94th on Inc 5000's fastest-growing private companies in America.