Senior Backend Engineer - Python

Lumenalta; Toronto; On-site; CAD 120,000 - 170,000; Full time

Job summary

Lumenalta is seeking a Senior Backend Engineer - Python to design and maintain scalable backend systems. The ideal candidate will have extensive experience with Python, AWS, and distributed systems. This role involves collaborating with cross-functional teams to deliver efficient solutions and contribute to automation efforts.

Qualifications

• 7+ years of backend development experience, strong focus on Python.
• Experience building and maintaining GraphQL APIs or RESTful services.
• Proven experience with cloud infrastructure like AWS Lambda, DynamoDB.

Responsibilities

• Design, build, and maintain scalable backend systems using Python.
• Implement microservices that interact with distributed systems.
• Monitor system performance and improve reliability and scalability.

Skills

Backend Development

Python

GraphQL

AWS

Distributed Systems

CI/CD

Problem-Solving

Job description

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At Lumenalta, we partner with global enterprises to build and scale high-impact digital products. Our engineering teams work on complex, production-grade systems that power real-world experiences for millions of users.

What You’ll Do

• Design, build, and maintain scalable backend systems using Python, GraphQL, and AWS services
• Implement microservices that interact with distributed systems and cloud infrastructure
• Write robust, testable, and efficient code to support mission-critical features
• Collaborate with front-end developers, product managers, and other backend engineers to deliver complete end-to-end solutions
• Develop and manage serverless applications using AWS Lambda, DynamoDB, and ECS
• Monitor system performance and help drive improvements in reliability and scalability
• Participate in code reviews, technical design discussions, and sprint planning
• Contribute to automation efforts across CI/CD, testing, and deployment

What We’re Looking For

• 7+ years of backend development experience, with a strong focus on Python *Experience building and maintaining GraphQL APIs or RESTful services *Proven experience working with cloud infrastructure – preferably AWS Lambda, DynamoDB, ECS, and S3 *Strong grasp of data modeling, system design, and distributed systems *Familiarity with CI/CD practices and cloud-native development *Experience writing unit, integration, and performance tests *A pragmatic problem-solver who can balance shipping with long-term scalability *Excellent communication skills and the ability to work independently in a remote team

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Contract

Job function

• Job function

  Engineering and Information Technology

• Industries

  IT Services and IT Consulting

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