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[Remote] Senior Backend Engineer

Remote · Sri Lanka Full-time

Note: The job is a remote job and is open to candidates in USA. US Mobile is on a mission to revolutionize connectivity with a software platform designed for the 21st century. They are seeking an exceptional backend engineer and hands-on architect to help scale and connect millions of devices to wireless networks, focusing on building quality tools and ensuring 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

Skills

  • 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
  • Excellent problem-solving and debugging skills
  • Strong communication and team collaboration skills

Benefits

  • Health care coverage through Aetna (Medical, Dental, Vision)
  • Flexible paid time off
  • Gym reimbursement (up to $100 a month)
  • Commuter reimbursement (MTA, Metro North, etc..)
  • Free cell phone service
  • Your choice of equipment + Bose QC/Apple Airpod Pro headphones
  • 401k

Company Overview

  • US Mobile builds a next-generation connectivity platform to connect the next billion wireless devices onto nationwide 4G and 5G networks. It was founded in 2014, and is headquartered in New York, New York, USA, with a workforce of 51-200 employees. Its website is https://www.usmobile.com/.
  • Company H1B Sponsorship

  • US Mobile has a track record of offering H1B sponsorships, with 1 in 2026, 5 in 2025, 6 in 2024, 4 in 2023, 3 in 2022, 3 in 2021, 2 in 2020. Please note that this does not guarantee sponsorship for this specific role.
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