RF / SDR Engineer

Responsibilities

• Set up and configure an RF test bench including SDR hardware, directional antennas, LNA, and coaxial cabling.
• Develop GNU Radio Python scripts for signal generation, capture, and processing.
• Implement signal processing algorithms including coherent stacking, time gating, correlation-based detection, and feature extraction.
• Build and train ML classifiers (Random Forest, XGBoost) on RF signal features for pattern recognition.
• Develop a web-based results dashboard using Streamlit for visualizing signal data and detection outputs.
• Configure and manage a SQLite database for storing calibration signatures and test results.
• Run structured experiments, document results, and produce a clear technical handover report.
• Follow RF safety protocols during all testing, including high-power transmission safety procedures.

Required Skill

Core RF & Hardware

GNU Radio

• Hands-on experience building flowgraphs and Python-based signal processing scripts.

SDR Hardware

• Practical experience with LimeSDR, HackRF, USRP, or equivalent platforms, including setup, configuration, signal capture, and transmission.

RF Signal Processing

• Experience with coherent stacking, time gating, bistatic radar geometry, correlation detection, and SNR optimization.

Antenna Systems

• Knowledge of directional antennas (Yagi), coaxial cables (LMR-400), impedance matching, and connector types such as SMA and N-type.

RF Bench Skills

• Comfortable assembling and troubleshooting RF hardware setups, including cables, connectors, LNA integration, and power management.

RF Safety

• Familiarity with RF exposure safety standards and high-power transmission protocols.

Software & Data

Python

• Strong experience with NumPy, SciPy, and signal processing libraries.
• Ability to write clean, maintainable, and well-documented production-quality code.

Data Management

• Experience with SQLite or similar lightweight databases for structured data storage and retrieval

Streamlit / Dash

• Ability to build simple interactive dashboards for real-time data visualization

Git

-Experience with version control, maintaining clean commit histories, and documenting code effectively

Good to Have

Radar Systems

• Knowledge of pulsed radar, radar cross-section (RCS), and material electromagnetic characterization

RF Power Amplifiers

• Experience with high-power RF integration, amplifier chain design, and drive power requirement

EM Material Properties

• Understanding of dielectric permittivity, conductivity, and material-specific RF response

Defense / Security R&D

• Previous experience in defense, security, or government research environments

Oscilloscope Proficiency

• Ability to measure induced voltage and electrical effects in electronic circuits