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US Mobile
Senior Backend EngineerUS Mobile • Montreal (administrative region), QC, Canada
Senior Backend Engineer

Senior Backend Engineer

US Mobile • Montreal (administrative region), QC, Canada
30+ days ago
Job type
  • Full-time
Job description

About US Mobile

US Mobile is building the future of wireless communication. The goal: one unified network open to any person and any device, worldwide. Connection without walls.

We’re getting there by empowering customers. All three major networks on one phone and one plan, plus home internet from Starlink. No lock‑in. No commitments. Custom fit plans at every price point. 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.

We’re building innovative systems that scale. A network agnostic tech stack. Agile, cross‑functional teams built on trust and mutual respect. This work isn’t for everyone. If you work fast, flexibly, and collaboratively — without compromising standards — we want to hear from you.

You will

  • Architect optimal solutions to our business problems
  • Deploy exciting new features
  • Help us scale to 10’s of millions of customers & connected devices
  • Build quality tools and frameworks to ensure a high‑quality product
  • Build systems to ensure continuous uptime

Responsibilities

  • Develop and maintain RESTful APIs using Java (Spring Boot or related web frameworks) or Python (Flask, Django)
  • Design and implement asynchronous service communication using RabbitMQ or AWS SQS/SNS
  • Work with NoSQL databases like MongoDB for data modeling and storage
  • Collaborate with Product, QA, and DevOps teams to deliver reliable and scalable features
  • Write clean, testable, and well‑documented code with unit and integration tests
  • Participate in system architecture design, code reviews, and performance tuning

Qualifications

  • 7+ years of experience with Java and Spring Boot
  • Strong experience with building and consuming REST APIs
  • Hands‑on experience with message brokers such as RabbitMQ or AWS SQS/SNS
  • Familiarity with MongoDB or other NoSQL database technologies
  • Experience integrating and leveraging AI‑assisted development tools such as Claude and Opencode to accelerate backend development, including code generation, debugging, and optimization of APIs and services
  • Demonstrated ability to incorporate AI tools into the software development lifecycle, using Claude or Opencode for tasks like automated code reviews, documentation generation, and improving system design efficiency
  • Solid understanding of Git, CI/CD workflows, and agile development practices
  • Excellent debugging, problem‑solving, and communication skills
  • Strong communication and team collaboration skills

Benefits

  • Health care coverage
  • Flexible paid time off
  • Gym reimbursement
  • Free cell phone service
  • Your choice of equipment + Bose QC/Apple Airpod Pro headphones
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Senior Backend Engineer • Montreal (administrative region), QC, Canada

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