RAN Digital Twin Engineer

What will you do:

• Contribute to the development of a modular, multi-RAT RAN digital twin covering LTE and 5G NR. 

• Develop and integrate production software components with simulation and analysis tooling using stable and maintainable interfaces. 

• Work with software and system teams to model communication-system behavior, including traffic, mobility, scheduling, interference, and performance KPIs. 

• Support the extension of existing LTE simulation capabilities and reusable components for additional radio technologies. 

• Develop software components and tools in C/C++ and Python for simulation, automation, data processing, and analysis. 

• Support the development and evaluation of AI/ML-based capabilities for communication systems and network optimization. 

• Build datasets, experiment pipelines, and automated analysis tools to evaluate system behavior and algorithm performance. 

• Create reproducible tests and experiments across software builds and algorithm versions using defined scenarios, configurations, and KPIs. 

• Support simulation verification and validation activities, including comparison with lab results and analysis of model behavior.

• Build automated unit, component, end-to-end, regression, and performance tests and integrate them into CI/CD workflows. 

• Improve simulation speed, usability, observability, and automation so engineering teams can run repeatable experiments independently. 

• Debug issues across C/C++, Python, MATLAB, system software, configuration, and reference measurements. 

• Document assumptions, supported scenarios, limitations, and experiment results in a clear and structured way. 

• Work closely with RAN, PHY, system, AI/ML, automation, and validation teams to turn engineering questions into measurable experiments. 

What you bring:

• B.Sc. in Electrical Engineering or an M.Sc. in a relevant field. 

• At least 2 years of hands-on software development experience in communication systems or a related telecom environment. 

• Strong software development skills in C or C++ and Python. 

• Good understanding of communication systems and the ability to learn new technologies and system concepts quickly. 

• Experience working in Linux development environments with Git, automated testing, and modern software development practices. 

• Strong analytical and problem-solving skills, with the ability to investigate complex technical issues independently. 

• Good communication skills and the ability to work effectively with software, system, algorithms, and validation teams. 

• Simulation experience is not required; candidates with strong software and communication-system backgrounds are encouraged to apply. 

Nice to have:

• Experience with simulation environments, system-level modelling, or hardware-in-the-loop testing. 

• Knowledge of LTE and/or 5G NR, RAN, modem/PHY, or wireless communication systems. 

• Experience with MATLAB and communication-system simulation or analysis tools. 

• Hands-on experience with scientific computing and data analysis using NumPy, SciPy, pandas, or similar tools. 

• Exposure to AI/ML, time-series analysis, signal processing, or network optimization. 

• Familiarity with PyTorch, TensorFlow, Hugging Face, or other machine-learning frameworks. 

• Knowledge of digital communications and signal processing concepts. 

• Experience with automated testing, containers, CI/CD, or cloud development environments. 

• Familiarity with SDR, radio test equipment, lab automation, or field-log analysis.