Senior Developer - REF5617V

Stack

Responsibilities

• ▹Implement and develop business objects for mobile network infrastructure, from backend systems up to the API layer
• ▹Develop and maintain data models, backend logic, and APIs
• ▹Collaborate primarily with internal stakeholders, while considering requirements related to external partners
• ▹Implement features, refine components, perform testing, and maintain documentation
• ▹Ensure high code quality, maintainability, and performance by applying best practices in backend development and API design

Requirements

• ▹Extensive experience in Agile development methodologies
• ▹Advanced proficiency in Python and modern backend frameworks
• ▹Strong experience in API design, integration, and development
• ▹Solid background in SQL development and database design
• ▹Demonstrated expertise in back-end development and system architecture
• ▹Proven experience building and maintaining API services
• ▹Strong understanding of code quality, maintainability, and best practices in backend development
• ▹English (B2)

Nice to have

• ▹Experience with performance optimization and scalability in backend systems
• ▹Familiarity with business object modelling and data model design
• ▹Experience in testing frameworks and quality assurance methodologies
• ▹Proficiency with version control systems and CI/CD pipelines
• ▹Experience working with internal stakeholder management and cross-functional collaboration
• ▹Knowledge of mobile network infrastructure or telecommunications domain

Soft skills

About the company

Deutsche Telekom IT Solutions is a Hungarian subsidiary of the Deutsche Telekom Group with more than 5,300 employees, providing a wide portfolio of IT and telecommunications services to large corporate customers in Germany and other European countries. Ranked Hungary's most attractive employer in 2025 by Randstad's survey, the company received HIPA's Best in Educational Cooperation award in 2019 and has been recognized as one of the most ethical multinational companies. It continues to grow its four Hungarian sites in Budapest, Debrecen, Pécs and Szeged. The work takes place in a modern, agile, and dynamic environment that fosters innovation and a clear system landscape.