Senior Backend Engineer

US Mobile

Backend Engineer architecting solutions for a connectivity platform. Helping to scale millions of devices while ensuring a high-quality product for US Mobile.

Posted 4/17/2026full-timeNew York City • New York • 🇺🇸 United StatesSenior💰 $140,000 - $180,000 per yearWebsite

Tech Stack

Tools & technologies

AWSDjangoFlaskJavaMongoDBNoSQLPythonRabbitMQSpringSpring BootSpringBoot

About the role

Key responsibilities & impact

Architect optimal solutions to our business problems
Deploy exciting new features
Help us scale to 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
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

Requirements

What you’ll need

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

Comp & perks

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

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Hard Skills & Tools

JavaSpring BootPythonFlaskDjangoRESTful APIsRabbitMQAWS SQSAWS SNSMongoDB

Soft Skills

problem-solvingdebuggingcommunicationteam collaboration