Python Backend Developer — FastAPI, Async, AI Tools (Hybrid)

AXON Networks; København; Hybrid; DKK 520,000 - 680,000; Full time

Benefits offered by this job

Health insurance

Pension scheme

Hybrid work

Job summary

AXON Networks in Copenhagen seeks a mid-level Python back-end developer to build production-grade services and APIs. You will design modular components, integrate databases, and work with AI-assisted coding tools to ensure secure, maintainable code.

You will review code, maintain comprehensive tests with pytest, and collaborate in a hybrid environment. Proficiency in FastAPI, Docker, and Git is required, with a focus on scalable, type-safe solutions.

Qualifications

• Strong Python and asyncio knowledge.
• Experience with FastAPI and API design.
• Modular design, separation of concerns, and loose coupling.
• Database integration and connector experience.
• Python type annotations and static type checking.
• Unit testing with pytest.
• Modern Python tooling (uv, ruff, mypy, pyright).
• Docker and microservice fundamentals.
• Git and collaborative workflows.

Responsibilities

• Build asynchronous Python services and FastAPI-based APIs.
• Design modular, loosely coupled components with clear responsibilities.
• Integrate databases, APIs, and external services.
• Develop agentic applications using frameworks such as OpenAI Agents SDK or Pydantic AI.
• Write type-safe, well-tested, maintainable code.
• Review both human-written and AI-generated code.

Skills

Python

asyncio

FastAPI

modular design

database integration

typing / mypy

pytest

Docker

Git

AI-assisted coding

Tools

FastAPI

Pytest

Docker

Git

OpenAI Agents SDK

Pydantic AI

SQLAlchemy

Job description

AXON Networks in Copenhagen seeks a mid-level Python back-end developer to build production-grade services and APIs. You will design modular components, integrate databases, and work with AI-assisted coding tools to ensure secure, maintainable code.

You will review code, maintain comprehensive tests with pytest, and collaborate in a hybrid environment. Proficiency in FastAPI, Docker, and Git is required, with a focus on scalable, type-safe solutions.