Experienced Developer

As Hungary’s most attractive employer in 2025 (according to Randstad’s representative survey), Deutsche Telekom IT Solutions is a subsidiary of the Deutsche Telekom Group. The company provides a wide portfolio of IT and telecommunications services with more than 5300 employees. We have hundreds of large customers, corporations in Germany and in other European countries. Please be informed that our remote working possibility is only available within Hungary due to European taxation regulation. Job Description The project focuses on implementing and improving business objects for mobile network infrastructure in backend systems up to the API layer. It provides a consistent and scalable data foundation for internal systems, while external partners remain relevant in the overall ecosystem. The work takes place in a modern, agile, and dynamic environment that fosters innovation and a clear system landscape. The team develops and maintains business objects, including data models, backend logic, and APIs. Collaboration is primarily with internal stakeholders, while considering requirements related to external partners. Activities include implementing features, refining components, testing, and maintaining documentation within a modern, agile, and engaging working environment. The developer applies solid Python coding skills to implement reliable backend functionality and API components. They are highly motivated to deliver high-quality, well-tested code and continuously improve through feedback and collaboration. Qualifications Required Qualifications: Experience in Agile development methodologies and practices Proven expertise in back-end development with a strong focus on scalable systems High proficiency in Python with demonstrated ability to write clean, maintainable code Solid experience in SQL development and database design Experience with API integration Strong understanding of data modelling and business object design Proficiency with version control systems (e.g., Git) Excellent problem-solving and debugging skills Language: English (B2) Preferred Qualifications: Experience developing backend systems for mobile network infrastructure or telecommunications Familiarity with modern API documentation and specification standards Experience working in dynamic, fast-paced agile environments Knowledge of software design patterns and architectural best practices Experience with code review processes and collaborative development workflows Strong written and verbal communication skills for cross-functional collaboration