Why ituma?

Are you a Python developer with a passion for clean back-end systems, data-driven solutions and IoT infrastructure – and looking for a product that really makes a difference in the real world? With us, you’ll integrate data streams from physical sensor networks with scalable back-end architectures and have a direct influence on our core product, aduno®.

As a successful and financially independent IT company based in Hilden near Düsseldorf, we have been defining intelligent enterprise network solutions as one of the market leaders in Europe since 2010. Our team consists of experts with diverse specialist knowledge from a wide range of industries.

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Python Developer (Mid- bis Senior) – Backend / API / Data / IoT (w/m/d)

Full-time / permanent / location: Hilden

What you can expect

Real IoT data. Real responsibility.

You’ll join aduno®’s core development team and work at the interface between physical infrastructure and scalable software. From LoRaWAN sensor data and MQTT pipelines to high-performance REST APIs – you’ll bring the data to life.

Your mission

  • Backend development: You will design and implement scalable APIs and microservices using FastAPI – from data integration to secure endpoints
  • IoT data pipelines: Integration and processing of sensor data from LoRaWAN networks via MQTT and ChirpStack – you will ensure that no data point is lost
  • Database architecture: Design and optimisation of TimescaleDB schemas for time-series data; high-performance queries for large data volumes are your speciality
  • API security: Implementation of JWT-based authentication, refresh token strategies and modern authentication flows (including Redis session management)
  • DevOps integration: Containerisation with Docker, helping to design CI/CD pipelines and deployment processes
  • Quality assurance: Developing and maintaining a testing strategy using pytest, mypy and static code analysis tools (ruff, bandit) to ensure sustainable, secure code

What you bring to the table

Must-haves

  • Python proficiency: Several years’ practical experience with Python 3.10+ and knowledge of object-oriented and functional programming
  • FastAPI / REST: Extensive experience in the development and design of RESTful APIs using FastAPI or a comparable framework (Flask, Django REST)
  • Databases: Proficiency in PostgreSQL or TimescaleDB; Understanding of time series data and query optimisation
  • Messaging / IoT: Knowledge of MQTT protocols and experience with processing real-time data streams
  • Docker: Proficiency in using containers for local development and deployment
  • Testing mindset: Practical experience with pytest and writing unit and integration tests

Nice-to-haves

  • Experience with ChirpStack or other LoRaWAN network servers
  • Knowledge of Redis (session management, caching)
  • Familiarity with modern authentication standards (JWT, OAuth 2.0, DPoP / RFC 9449)
  • Understanding of clean architecture and scalable system designs
  • Interest in network monitoring and carrier-grade infrastructures

Your personality

  • Personal responsibility: You take ownership of your components and proactively drive projects forward
  • Strong communication skills: You can clearly communicate technical matters – both within the team and to stakeholders
  • Commitment to quality: Clean code, sustainable solutions and meaningful tests are second nature to you
  • Pragmatism: You strike the right balance between perfection and time-to-market
  • Team player: You enjoy sharing your knowledge, giving constructive feedback and working collaboratively to find the best solution
  • Willingness to learn: You see IoT, network technologies and new Python patterns as exciting areas, not as obstacles

What we offer you

Technology & Project

  • Real impact: Your code runs on live networks – from corporate Wi-Fi and LoRaWAN sensor infrastructure to public transport systems
  • Modern tech stack: Python 3.12+, FastAPI, TimescaleDB, ChirpStack, Docker, GitLab CI – no legacy baggage
  • Shaping the future: Your expertise matters – you have a real say in architectural decisions and the technical development of aduno®
  • High-end equipment: Operating system of your choice – you decide what you work best with

Benefits

  • Family-like corporate culture with flat hierarchies and short decision-making processes
  • Attractive remuneration package based on your expertise and the added value you bring
  • Flexible working hours and the option to work from home (hybrid)
  • Work-life balance that deserves its name
  • Training budget for conferences, training courses and certifications
  • No dress code – come as you are
  • Free drinks and regular team events
  • Sport & leisure: Sportpark Hilden and HiFly Trampoline Park nearby
  • Transport links: Direct bus stop and large staff car park
  • JobTicket for local public transport
  • Team spirit: A team that sticks together and supports each other

Interested?

Do you want to build backend systems that really make a difference – and are you passionate about Python, clean architectures and IoT data? Then let’s talk!

Apply now, sending us your CV and cover letter, your salary expectations and your earliest possible start date: hr@ituma.eu.

We’d particularly love to see:

  • Links to open-source projects or public repositories
  • Examples of code or system designs you’re proud of
  • Your thoughts on clean Python architecture or IoT data pipelines

Python Developer (Mid- bis Senior) – Backend / API / Data / IoT (w/m/d)

Apply now!