Digital Signal Processing Engineer

Role: Digital Signal Processing Engineer
Industry Type: Defence & Aerospace
Employment Type: Full Time, Permanent
Role Category: Software Development
Education: UG: B.Tech/B.E./Diploma in Electronics/Telecommunication, Electrical and Electronics, Aviation, Information Technology, Computers, Electrical
Experience: 3 - 8 years
Position openings: 1
Domain: Defence | Aerospace | Satellites | Software Defined Radio | RF | Communications | ELINT/SIGINT
We are looking for a Digital Signal Processing Engineer to develop advanced signal-processing algorithms and real-time DSP systems for communication, RF, electronic intelligence (ELINT), signals intelligence (SIGINT), and software-defined radio (SDR) applications.
The role involves taking algorithms from mathematical concepts and system requirements through MATLAB/Python modelling, simulation and validation, and finally to real-time implementation on FPGA, DSP and embedded platforms.
You will work closely with RF, FPGA, embedded software and systems engineers to develop high-performance signal-processing solutions for next-generation defence and aerospace systems.
Responsibilities:
Design, develop and implement DSP algorithms for digital communication, RF, ELINT, SIGINT and SDR systems.
Develop and analyse modulation and demodulation algorithms for digital communication systems.
Work with modulation schemes such as BPSK, QPSK, OQPSK, FSK, MSK, GMSK, QAM, DVB-S2, CPM and other communication waveforms.
Develop algorithms for Carrier and symbol synchronization, Timing recovery, Frequency and phase estimation, Matched filtering, Channel estimation and equalization, Detection and classification, Spectrum analysis, etc.
Develop DSP techniques for ELINT/SIGINT, including signal detection, characterization, parameter extraction and classification.
Develop communication receivers and transmitters for SDR platforms.
Model and simulate algorithms using MATLAB/Simulink and Python.
Convert floating-point algorithms into fixed-point, bit-accurate implementations suitable for real-time hardware.
Implement DSP algorithms on FPGA, DSP processors and embedded processors.
Work with FPGA engineers to translate algorithms into Verilog/VHDL or FPGA-friendly architectures.
Perform algorithm optimization for throughput, latency, memory utilization and FPGA resource utilization.
Validate algorithms using simulation, recorded RF/IQ data and hardware measurements.
Interface DSP algorithms with RF front ends, ADCs/DACs, SDRs and high-speed data converters.
Participate in system-level debugging using spectrum analysers, oscilloscopes, logic analysers, vector signal analysers and RF test equipment.
Analyse and implement algorithms based on IEEE papers, communication standards, technical publications and system specifications.
Work with cross-functional RF, FPGA, embedded and systems teams to integrate DSP algorithms into complete products.
Required Skills:
Strong fundamentals in Digital Signal Processing and Digital Communications.
Strong understanding of sampling theory, Fourier transforms, filtering, correlation, convolution and spectral analysis.
Good understanding of digital modulation and demodulation techniques.
Hands-on experience with MATLAB and/or Python for algorithm development and simulation.
Experience developing DSP algorithms from concept to simulation and hardware implementation.
Good understanding of RF signal chains and Software Defined Radio architectures.
Experience working with complex I/Q signals and IQ data processing.
Strong analytical and mathematical problem-solving skills.
Programming experience in Python, C or C++.
Ability to understand and implement algorithms from technical papers and specifications.
Preferred Skills:
The following experience will be highly preferred:
Hands-on experience with FPGA-based DSP development.
Experience with Xilinx/AMD, Intel/Altera or equivalent FPGA platforms.
Experience with SDR platforms and RF data converters.
Experience working with RF transceivers, ADCs, DACs and FPGA-based RF signal-processing systems.
Experience with Xilinx RFSoC or similar heterogeneous RF processing platforms.
MATLAB / Simulink / Python / NumPy / SciPy
Experience with fixed-point and bit-accurate DSP modelling.
Experience implementing DSP algorithms in FPGA using RTL or HLS.
Experience with hardware-in-the-loop testing and validation.
Experience with RF test equipment and IQ data capture/analysis.
Experience developing communication receivers/transmitters or modems.
Experience in ELINT, SIGINT, COMINT, EW or RF intelligence systems.
Experience with radar signal processing is an advantage.
Knowledge of FEC/channel coding, including LDPC, Turbo, Reed-Solomon or convolutional coding.
Knowledge of OFDM, spread spectrum, DSSS/FHSS or anti-jamming techniques is an advantage.
Experience with signal detection, classification, direction finding, DOA/AOA or spectrum monitoring is an advantage.

Work arrangement
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