Senior DSP and RF Communications Engineer

Unmanned Autonomy; Hoskote; On-site; INR 2,500,000 - 4,500,000; Full time

Job summary

Unmanned Autonomy seeks a Senior DSP and RF Communications Engineer to architect and implement high-performance radio, radar, and SDR systems for UAV and defense apps.

The role covers FPGA-based DSP, ARMed software integration, anti-jam links, and robust, low-latency architectures in contested RF environments.

Qualifications

• 5+ years in FPGA, SDR, DSP, radar or related signal processing systems.
• Strong FPGA RTL design experience using Verilog/VHDL/SystemVerilog.
• Deep understanding of SDR architectures and FPGA-based SDR implementations.
• Experience with DSP algorithms in FPGA/RTL.
• Experience with OFDM/COFDM, MIMO, modulation, synchronization, channel estimation, error correction.
• Experience with high-speed DSP pipelines and real-time processing.

Responsibilities

• Design and implement COFDM transmit/receive chains for high-performance radio systems.
• Develop configurable SDR/FPGA PHY architectures across bandwidths and modulations.
• Implement DSP algorithms in FPGA/RTL for real-time processing.
• Optimize FPGA architectures for radio and radar signal processing.
• Develop AMC and low-latency communication links.
• Integrate FPGA/SDR with RF transceivers from major vendors.
• Develop software on ARM Cortex-A53/R5 processors.
• Debug FPGA/SDR/RF/embedded subsystems using ILA and analyzers.

Skills

FPGA RTL

SDR architectures

DSP algorithms

COFDM

MIMO

OFDM

Radar processing

ARM processors

RF transceivers

AXI/DMA

ILA debugging

Verilog/VHDL/SystemVerilog

Education

Bachelor's or Master's in Electronics/EE

Tools

Xilinx/AMD FPGA

DDR interfaces

Job description

We are seeking a highly skilled Senior DSP and RF Communications Engineer to architect and implement high-performance radio communication, radar, and software-defined radio (SDR) systems for UAV and defense applications.

The role involves developing FPGA-based digital communication and signal processing systems, including complete PHY and portions of the MAC layer, while implementing complex digital signal processing (DSP) algorithms in FPGA/RTL. The engineer will work on robust, low-latency, anti-jam communication links and advanced signal processing architectures capable of operating in contested RF environments.

The ideal candidate should have strong hands‑on experience with FPGA, SDR (Software Defined Radio), digital signal processing, radio communications, radar systems, and digital communication systems, along with experience integrating embedded software with ARM processors.

Key Responsibilities

• Design and implement complete COFDM transmit and receive chains for high-performance radio communication systems.
• Develop configurable SDR and FPGA-based PHY architectures supporting multiple bandwidths and modulation schemes.
• Implement advanced digital signal processing (DSP) algorithms in FPGA/RTL for real-time communication and signal processing.
• Develop and optimize FPGA-based architectures for radio communications and radar signal processing.
• Implement adaptive modulation and coding (AMC).
• Optimize communication systems for low latency, high throughput, and real-time operation.
• Implement 44 MIMO architectures, including spatial multiplexing and diversity techniques.
• Implement MIMO channel estimation and signal detection algorithms.
• Develop FPGA IP cores for OFDM baseband processing and digital communications.
• Develop and optimize DSP pipelines for SDR, radio communication, and radar applications.
• Develop software running on ARM Cortex-A53/R5 processors.
• Integrate FPGA-based SDR systems with RF transceivers from Analog Devices, Texas Instruments, and similar vendors.
• Work on signal processing algorithms involving modulation, demodulation, filtering, synchronization, channel estimation, detection, and estimation.
• Support development of anti‑jam and resilient radio communication systems for defense and UAV applications.
• Integrate and debug FPGA, SDR, RF, and embedded processing subsystems.

Required Skills

• 5+ years of experience in FPGA, SDR, digital communications, DSP, radar, or related signal processing systems.
• Strong FPGA RTL design experience using Verilog/VHDL/SystemVerilog.
• Strong understanding of Software Defined Radio (SDR) architectures and FPGA-based SDR implementations.
• Strong understanding of digital signal processing (DSP) and real-time signal processing architectures.
• Strong understanding of digital communication and radio communication systems.
• Experience implementing DSP algorithms in FPGA/RTL.
• Experience with OFDM, COFDM, MIMO, modulation/demodulation, synchronization, channel estimation, and error correction.
• Experience with high-speed DSP pipelines and real-time signal processing.
• Experience working with radar signal processing or radar communication systems is highly desirable.
• Experience debugging FPGA designs using Integrated Logic Analyzer (ILA).
• Experience with AXI infrastructure, DMA engines, and DDR interfaces.
• Experience integrating FPGA/SDR systems with RF transceivers.
• Strong debugging skills using oscilloscopes, logic analyzers, and spectrum analyzers.

DSP / Signal Processing Knowledge

Strong theoretical and practical understanding of:

• Digital Signal Processing
• Digital Communications
• Radio Communications
• Radar Signal ProcessingLinear Algebra
• Probability
• Detection Theory
• Estimation Theory
• Random Processes
• Signal Detection and Synchronization
• Modulation and Demodulation
• Channel Estimation
• MIMO and OFDM

Desired Qualifications

• Bachelor's or Master's degree in Electronics and Communication Engineering, Electrical Engineering, Electronics Engineering, or a related field.
• Experience developing FPGA-based SDR, radio communication, or radar systems.
• Experience with military, aerospace, defense, or UAV communication systems.
• Experience with radar systems and radar signal processing.
• Familiarity with FPGA-based SDR platforms and high-speed serial interfaces.
• Experience with Xilinx/AMD or Intel FPGA platforms.
• Experience with embedded ARM processors and FPGA SoC platforms.
• Understanding of secure communications, encryption integration, and deterministic real-time systems.
• Experience working with RF transceivers and RF front-end integration.