Senior Backend Engineer - Python

Lumenalta Amsterdam, North Holland, Netherlands

Overview

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

• Mid-Senior level

Employment type

• Contract

Job function

• Engineering and Information Technology

Industries

• IT Services and IT Consulting

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