Real job — pulled straight from US Mobile’s careers page · Verified July 14, 2026 · No reposts.
Job description
US Mobile is hiring a Senior Backend Engineer, Online Security — a full-time, based in Montreal, QC role. Apply directly on US Mobile's careers page below.
Senior Backend Engineer (Online Security)
Team: Backend
Location: Toronto
Commitment: Full-time
Workplace Type: hybrid
We’re looking for a skilled and motivated Senior Backend Engineer to help us scale connectivity to millions of devices, while keeping that platform secure from the ground up. In this role, you’ll design, develop, and maintain scalable backend services and APIs that power our products, with deep ownership over online security: protecting devices and networks, hardening authentication and access controls, and building systems that detect and respond to threats in real time.
You’ll work in a collaborative, agile environment and contribute to mission-critical systems that millions of users depend on every day.
Key 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:
- 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 comprehensive unit and integration tests
- Participate in system architecture design, code reviews, and performance tuning
Nice to Haves:
- 7+ years of experience with Java and Spring Boot
- Strong experience within Online Security, including:
- Protecting internet-connected devices, networks, and personal data from digital threats
- Authentication and Access management
- Software Protection
- Network Security
- Threat Detection
- Strong experience building and consuming REST APIs at scale
- Hands-on experience with message brokers such as RabbitMQ or AWS SQS/SNS
- Familiarity with MongoDB or other NoSQL database technologies
- Solid understanding of Git, CI/CD workflows, and agile development practices
- Excellent debugging, problem-solving, and communication skills
- Strong team collaboration instincts, you make the people around you better
Benefits:
- Competitive salary (varies based on location)
- Flexible working hours
- Gym reimbursement ($100/mo)
- Supplemental health insurance
- Professional development stipend
- $500 CAD wfh tech set-up reimbursement
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Frequently asked questions
What skills are required for Senior Backend Engineer, Online Security at US Mobile?
The required skills for Senior Backend Engineer, Online Security at US Mobile include: Java, Spring Boot, Python, Flask, Django, RabbitMQ, MongoDB, API, Git, CI/CD, Agile.
What is the seniority level for Senior Backend Engineer, Online Security at US Mobile?
Senior Backend Engineer, Online Security at US Mobile is a Senior level position.
How do I apply for Senior Backend Engineer, Online Security at US Mobile?
You can view the full description and apply for Senior Backend Engineer, Online Security at US Mobile on EchoJobs: https://echojobs.io/job/us-mobile-senior-backend-engineer-online-security-wli4p.