Senior Backend Developer, Python

Work Life Group

Senior Backend Developer for NATO focusing on refactoring existing Python applications into decoupled services. Required extensive experience and hands-on capability from day one.

Posted 5/26/2026contractRemote • 🇷🇴 RomaniaSeniorWebsite

Tech Stack

Tools & technologies

CloudDockerKubernetesPython

About the role

Key responsibilities & impact

Refactor existing Python backend applications to support the decomposition of a monolith into smaller, decoupled services.
Identify pragmatic, low-impact changes that improve modularity and separation of concerns without unnecessary redesign.
Ensure application configuration and settings are environment-based and suitable for deployment across multiple environments.
Develop and maintain production-grade backend services and APIs in Python with focus on maintainability, reliability, and security.
Support the transition of applications toward containerized and automated deployment models, working closely with DevSecOps and platform engineers.
Improve code quality, testing, troubleshooting, and documentation to enable safe incremental change.
Troubleshoot and resolve functional, integration, and performance issues in existing backend services.
Document implemented changes and contribute to good backend engineering practices across the team.

Requirements

What you’ll need

7+ years of professional experience in backend software development, with Python backend engineering as the main professional focus.
Strong recent hands-on experience in Python backend development.
Proven experience building and maintaining production backend services and APIs.
Proven experience working in existing or legacy codebases and performing incremental refactoring.
Practical experience supporting the decomposition of monolithic applications into smaller, decoupled services.
Strong understanding of environment-based configuration, backend architecture, API design, and database design.
Good understanding of integration patterns, service boundaries, and maintainable backend design.
Familiarity with CI/CD practices, Git workflows, code reviews, and Agile/Scrum delivery.
Good understanding of secure coding practices and writing maintainable, well-tested code.
Strong analytical, debugging, communication, and documentation skills.
Experience with Docker and Kubernetes-based deployments.
Experience with message queues, event-driven architectures, or caching strategies.
Experience in cloud or hybrid environments.
Good spoken and written English.

Benefits

Comp & perks

Professional development
Remote work options

ATS Keywords

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Hard Skills & Tools

Pythonbackend developmentAPI designmodularityrefactoringenvironment-based configurationsecure coding practicesdebuggingtestingdatabase design

Soft Skills

analytical skillscommunication skillsdocumentation skills