Physical Layer Engineer II

Job Title: Physical Layer Engineer II

Department: Wireless Communications / RF & DSP Systems

Location: Chennai

Employment Type: Full-Time

Experience Level: Mid-Level (35 years)

Educational Qualification:

• B.E./B.Tech in Electronics Engineering or Telecommunications Engineering

Company Description:

Big Bang Boom Solutions (BBBS) is a Chennai-based deep-tech defence startup focused on developing indigenous defence and security technologies. It operates as a defence solutions integrator that builds advanced systems in areas such as artificial intelligence, UAS/drone technology, electronic warfare, material science, propulsion, communication systems, and data security, aiming to create intellectual property for national defence applications.

BBBS develops products such as anti-drone defence systems, see-through armor interfaces, smart surveillance platforms, and other custom defence technologies. The company has participated in and won multiple iDEX challenges sponsored by the Indian Ministry of Defence, receiving government grants and contracts.

Job Summary:

We are seeking a technically proficient Physical Layer Engineer II to join our advanced wireless systems team. The ideal candidate will possess strong expertise in digital signal processing (DSP), FPGA development, and RF system design. This role involves designing, implementing, and validating physical layer components for high-performance communication systems.

Key Responsibilities

DSP & Modulation Techniques

• Design and implement advanced DSP algorithms for modulation, demodulation, filtering, and synchronization.
• Optimize signal processing pipelines to achieve real-time performance.

FPGA Development

• Develop and test physical layer logic using VHDL/Verilog on FPGA platforms.
• Collaborate with hardware teams to integrate FPGA-based signal processing blocks.

Communication Protocols

• Implement and validate physical layer protocols for wireless communication standards.
• Ensure compatibility and optimal performance across various modulation schemes.

RF & Spectrum Analysis

• Work with RF chains, antennas, and front-end components.
• Use lab test equipment such as VNAs, spectrum analysers, and signal generators for validation and testing.

Software-Defined Radio (SDR)

• Develop and test SDR applications using GNU Radio and similar frameworks.
• Simulate and analyse signal behaviour under different channel conditions.

Documentation & Collaboration

• Maintain detailed documentation of designs, test procedures, and validation results.
• Collaborate with cross-functional teams including hardware, software, and systems engineers.

Required Skills & Qualifications:

• 35 years of experience in physical layer development and RF/DSP systems.
• Strong proficiency in advanced digital signal processing (DSP), FPGA programming (VHDL/Verilog), and communication protocols.
• Hands-on experience with GNU Radio, modulation and demodulation techniques, and RF lab test equipment such as vector network analyzers (VNA) and spectrum analyzers.
• Solid understanding of RF chains, antenna fundamentals, and signal integrity principles.
• Excellent analytical, debugging, and technical documentation skills

Preferred Qualifications:

• Experience working with wireless communication standards such as LTE, 5G, or Wi-Fi.
• Familiarity with MATLAB, Python, or C++ for signal analysis, modeling, and simulation.
• Experience with Software-Defined Radio (SDR) platforms such as USRP or LimeSDR