python backend developer

2 weeks ago

Bangkok, Bangkok, Thailand The Sustainity Full time

Tech Stack:

  • Backend: Python 3.11+ with FastAPI
  • Database: Microsoft SQL Server 2019+
  • ORM: SQLAlchemy 2.x
  • Auth: JWT (PyJWT)
  • Deployment: Windows Server 2019/2022
KEY RESPONSIBILITIES
  • Design and implement RESTful APIs (15+ endpoints) using FastAPI
  • Build and manage 5 database tables in Microsoft SQL Server
  • Implement JWT authentication and role-based access control (5 roles)
  • Develop data synchronization logic (bulk upload, conflict resolution)
  • Create complete audit trail system (log all WHO/WHAT/WHEN/WHERE/WHY)
  • Build reporting APIs (daily summaries, patient history, CSV export)
  • Write database migrations using Alembic
  • Optimize SQL queries for performance
  • Deploy to Windows Server with HTTPS/TLS
  • Write comprehensive API documentation (Swagger/OpenAPI)
  • Write unit tests and integration tests (pytest)
  • Coordinate with Flutter developer on API contracts
REQUIRED QUALIFICATIONS

Technical Skills:

  • 3+ years Python backend development experience
  • Strong FastAPI or Flask experience
  • Microsoft SQL Server experience (critical)
  • SQLAlchemy ORM proficiency
  • REST API design and best practices
  • JWT authentication implementation
  • Git version control proficiency
  • Windows Server deployment experience
  • API documentation (Swagger/OpenAPI)

Language Requirements:

  • Thai language: Native level (required for team communication)
  • English: Fluent (written and spoken - for documentation and technical coordination)

Work Authorization:

  • Must have Thai work authorization (no visa sponsorship available)
  • Available full-time on-site in Bangkok (Lat Phrao/Ratchada area)
PREFERRED QUALIFICATIONS
  • Healthcare/medical system development experience
  • Audit trail system implementation
  • Role-based access control (RBAC) experience
  • Data synchronization and conflict resolution logic
  • Batch processing optimization
  • Experience with pyodbc or pymssql
  • Alembic migrations experience
  • Pytest testing framework
  • Docker containerization
  • Experience working with mobile app backends (iOS/Android)
APPLICATION QUESTIONS

Please answer these questions when applying:

  1. Python & FastAPI Experience:

  2. How many years of Python backend development experience?

  3. Have you used FastAPI? If yes, describe a project.
  4. Link to 2-3 backend projects (GitHub repositories)

  5. Microsoft SQL Server:

  6. How much experience do you have with MSSQL?

  7. Which Python driver do you prefer: pyodbc or pymssql? Why?
  8. Have you worked with SQLAlchemy + MSSQL before?

  9. API Design:

  10. Describe your approach to designing RESTful APIs.

  11. How do you handle authentication in your APIs?
  12. Have you implemented role-based access control (RBAC)?

  13. Data Sync & Audit:

  14. Have you built data synchronization logic? Describe your approach.

  15. Experience with audit trail systems (logging WHO/WHAT/WHEN)?
  16. How do you handle sync conflicts?

  17. Availability:

  18. Can you start in December 2025?

  19. Can you commit full-time for 6 months?
  20. Are you comfortable working on-site in Bangkok (Lat Phrao/Ratchada)?

  21. Language Skills:

  22. Rate your Thai proficiency: Native / Fluent / Conversational

  23. Rate your English proficiency: Fluent / Conversational / Basic
  24. Have you read/written technical documentation in English?

  25. Salary Expectation:

  26. What is your expected monthly salary?

  27. Are you open to contract-based work (6 months)?

  28. Technical:

  29. Have you deployed Python apps to Windows Server?

  30. Experience with pytest for testing?
  31. Familiar with Swagger/OpenAPI documentation?

  32. Portfolio:

  33. GitHub profile link (required)

  34. Portfolio website (if available)
  35. LinkedIn profile

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