Location: Saffron Walden Job Type: Permanent Hours: Monday-Friday, 9.00-17.30 Salary: Competitive Job Reference: 35947 Polytec are seeking a Senior RF Data Scientist / Research Engineer to develop signal-processing and machine learning solutions using RF data from software-defined radios for our Saffron Walden based client. This hands-on role sits at the intersection of RF hardware, DSP and applied ML in a fast-paced RandD environment. Responsibilities: \* Analyse and characterise IQ data from SDR platforms \* Build RF signal analysis and visualisation tools \* Design RF data-processing pipelines accounting for real-world hardware effects \* Develop ML and statistical models for RF classification and detection \* Prototype batch and real-time processing systems in Python and integrate with GNU Radio or C++ backends \* Support RF data collection and over-the-air testing Requirements: \* Strong Python skills for data analysis and prototyping \* Solid understanding of digital signal processing fundamentals \* Experience with SDR frameworks such as GNU Radio or similar \* Understanding of RF hardware chains and their impact on baseband data \* Experience analysing wireless protocols or physical-layer behaviour \* Comfortable working in iterative, experimental RandD environments Desirable: \* Hands-on SDR and RF lab experience \* Exposure to techniques such as direction finding, Doppler, or beamforming \* Experience beyond Python (e.g. C++, MATLAB) \* Knowledge of RF circuits or antenna systems \* Publications, patents, or open-source contributions Please contact us as soon as possible for more details or apply below