Principal Backend Engineer
About The Position
US Mobile is building the future of wireless communication with the goal of one unified network open to any person and any device, worldwide. They are empowering customers by offering all three major networks on one phone and one plan, plus home internet from Starlink, with no lock-in or commitments. They provide custom-fit plans at every price point and 24/7 customer support with real people. The company actively uses real-time feedback from Reddit, surveys, and customer support to inform product roadmaps. Consumer Reports has recognized them as the top-rated mobile carrier for two consecutive years. US Mobile is also building innovative systems that scale, utilizing a network-agnostic tech stack and agile, cross-functional teams built on trust and mutual respect. This role is for individuals who work fast, flexibly, and collaboratively without compromising standards. The company is seeking an exceptional backend engineer and hands-on architect to help scale and connect millions of devices to wireless networks, offering incredible projects and potential impact for talented, ambitious, and entrepreneurial team members.
Requirements
- 10+ 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
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
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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What This Job Offers
Job Type
Full-time
Career Level
Principal
Education Level
No Education Listed
