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ATOS

Senior Application Architect

Remote

Belgium

Senior

Freelance

18-02-2026

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Skills

Communication Python MongoDB PostgreSQL Encryption GitHub GitLab Docker Kubernetes Configuration Management Jenkins Ansible Linux Programming Databases git Django Flask FastAPI python programming Gitlab CI GitHub Actions

Job Specifications

MAIN TASKS

Architect server-side components and services that form the backbone of web applications, employing best practices in Python programming.
Develop and maintain RESTful APIs to facilitate seamless communication between front-end and back-end systems.
Design, implement, and optimise database schemas and queries to ensure efficient data storage and retrieval processes.
Manage database security measures to protect sensitive information, ensuring compliance with data protection standards.
Enhance application performance by identifying bottlenecks and optimising server-side code and database queries.
Implement scalable architectures to handle increased user load and data volume, leveraging cloud services and containerisation.
Conduct regular code reviews and use vulnerability scanning tools to identify and address potential security issues.

SPECIFIC EXPERTISE

Proficiency in Python and experience with web frameworks such as Django, Flask, or FastAPI.
Experience with code linters and formatters (e.g., pylint, black, flake8) to enforce coding standards.
Experience with AI-powered code assistants (e.g., Amazon Q, Github Copilot), staying updated with advancements in AI-driven code technologies that can streamline Python web application development.
Strong understanding of RESTful design and implementation.
Solid experience with relational (e.g., Oracle, PostgreSQL) and non-relational databases (e.g., Elasticsearch, MongoDB).
Excellent knowledge of ORM, schema design, efficient queries.
Expertise in containerisation tools like Docker, Podman and orchestration using Kubernetes.
Knowledge of vulnerability scanning tools (e.g., OWASP), secure coding practices and standards, including authentication, authorisation and encryption.
Knowledge of code versioning tools such as Git or SVN.
Knowledge of DevSecOps tools such as Jenkins, GitLab CI, GitHub Actions (Continuous Integration / Deployment).
Familiarity with configuration management tools like Ansible.
Experience with VM management, Linux.

About the Company

This account discusses mainly (but not exclusively) the activities of Tech Foundations - the Atos Group business line leading in managed services, focusing on hybrid cloud & infrastructure, employee experience and technology services, through decarbonized, automated and AI-enabled solutions. Eviden designs the scope composed of Atos’ digital, cloud, big data and security business lines. It will be a global leader in data-driven, trusted and sustainable digital transformation. Visit Eviden: https://www.linkedin.com/company/e... Know more