• At least 3 years of professional experience in backend software development using Python and Flask or a similar framework.
• Strong experience designing, developing, and maintaining RESTful APIs.
• Solid knowledge of PostgreSQL, database design, query optimization, and data modeling.
• Hands-on experience with SQLAlchemy and database migration tools such as Alembic.
• Experience working with cloud-based services, preferably within the Microsoft Azure ecosystem.
• Understanding of software architecture principles, application performance, and API security best practices.
• Strong analytical thinking, problem-solving skills, and attention to detail.
• The ability to work both independently and collaboratively within an international team environment.
• Good communication skills and professional proficiency in English.

• Experience with Azure Blob Storage, Azure App Services, Azure Container Apps, or Docker-based deployments.
• Knowledge of OAuth 2.0, Azure Entra ID, and authentication/authorization concepts.
• Familiarity with FastAPI or other modern Python frameworks.
• Exposure to AI/ML-powered applications or integrating AI services into enterprise solutions.

• Design, build, and maintain the Flask application core using clean, modular architecture.
• Develop and document RESTful API endpoints consumed by the frontend and third-party integrations.
• Implement versioning, error handling, and input validation across all endpoints.

• Translate product and functional requirements into robust service-layer components.
• Implement background processing, async task management, and scalable service patterns.
• Collaborate with AI developers to expose ML model outputs via clean API contracts.

• Own the PostgreSQL schema design and evolve it via Alembic migration scripts.
• Implement multi-tenancy logic to ensure data isolation across VTU customer and internal tenants.
• Optimise queries, indexes, and connection pooling for production-scale workloads.

• Integrate Azure Blob Storage into the backend for file upload, retrieval, and lifecycle management.
• Implement secure, signed URL patterns and storage access policies.
• Manage storage account configuration, container structure, and cost-efficient retention policies.

VTU Engineering is developer, engineer and supplier of processing plants in the chemistry & metallurgy, oil & gas as well as pharmaceutical industries. The work focuses on process engineering and project management from the conceptual design to a successful start-up. Furthermore, VTU Engineering delivers turn-key, customized solutions, e.g. for solvent recovery or industrial wastewater treatment.