Python Developer (Focus on API and GIS Development)

Company: aconium GmbH Future is always. aconium. We write success stories together. With over 350 employees, aconium GmbH is among Germany’s Top 100 most innovative mid-sized companies. We live innovation, impress with expertise, and shape the future together—across Europe for over 15 years. aconium GmbH supports public-sector clients—including municipalities, districts, state and federal ministries, and private enterprises—in regional development, digitalization, mobility, energy, and education. We are looking for a Python Developer (m/f/d) to join our Berlin office immediately. Your Responsibilities: Develop web applications: Design and maintain data- and geospatial-based applications for projects in fiber-optic expansion, digital twins, and public administration. Design APIs: Develop and extend internal APIs using FastAPI, ensuring reliable and maintainable implementations. Integrate data and geospatial data: Connect various data sources and support structured processing and delivery of data. Enhance search solutions: Implement powerful search and research capabilities using OpenSearch. Ensure quality: Test your developments, fix bugs, and document technical solutions transparently. Improve development processes: Contribute suitable technologies and ideas to continuously refine our development workflows. Support teams and projects: Collaborate closely with the GIS team, project managers, and product owners; provide expertise in customer meetings as needed. Your Profile: Solid experience with Python and FastAPI. Strong working knowledge of GIS and geospatial data. Advanced experience with OpenSearch. Understanding of design and technical implementation of web-based applications. Knowledge of TypeScript, JavaScript, and React is a plus. Ideally, several years of professional and project experience in software development. Excellent command of German and English (spoken and written). What We Offer: Permanent contract with flexible working hours, option for a 4-day workweek, and remote work. Comprehensive mental health support in cooperation with an external partner. Individual continuing education budget and targeted career development opportunities. Modern, open-plan office in the heart of Berlin—designed for collaboration and exchange. Diverse projects in a growing, internationally oriented company—with room for your own ideas and responsibility. Structured onboarding process for a smooth and successful start. Company pension scheme for long-term financial security. Access to attractive employee discounts via our corporate benefits platform. Regular team events and internal training formats. Join Our Success Story: If this role resonates with you and you meet most of the requirements, we look forward to receiving your application via our online form. For any questions, feel free to contact us by email.