RF PCB Design Engineer 1 opening Hardware Engineering Bengaluru 7–15 yrs →

Ci4; India; On-site; INR 2,500,000 - 5,000,000; Full time

Job summary

Ci4 is seeking a Senior RF PCB Design Engineer to lead RF and mixed-signal PCB design for autonomous platforms. You will own designs from schematic capture through layout, simulations, and bring-up, collaborating with systems, firmware, and mechanical engineers for field-ready RF hardware.

The role requires 7+ years of RF PCB experience, strong RF fundamentals, and proficiency with Altium Designer or Cadence Allegro, and RF simulators.

Qualifications

• 7+ years of hands-on RF PCB design experience with production or field-tested boards.
• Strong RF fundamentals: impedance matching, transmission lines, filters, antennas.
• Proficiency in RF-specific layout techniques and simulation tools.
• Hands-on lab work with spectrum analyzers, VNAs, generators, oscilloscopes.

Responsibilities

• Design multilayer RF and mixed-signal PCBs from schematic to bring-up.
• Define impedance-controlled traces, matching networks, shielding for signal integrity.
• Select and integrate RF components (amplifiers, filters, mixers, antennas, connectors).
• Perform pre- and post-layout simulations (ADS, HFSS, CST).
• Collaborate on RF architecture for autonomous underwater and land platforms.
• Support board bring-up, debugging, and testing in the lab.
• Coordinate with CM for fabrication, assembly, and DFM/DFT reviews.
• Document design decisions and test results for internal and defense needs.

Skills

RF PCB design

Impedance matching

Transmission line theory

Antenna interfacing

RF circuit fundamentals

RF layout techniques

Altium Designer

Cadence Allegro

ADS/S-parameters

HFSS/CST simulations

EMI/EMC design

Lab RF testing

Education

Bachelor’s or Master’s in Electrical Engineering or RF Engineering

Tools

Altium Designer

Cadence Allegro

ADS

HFSS

CST

Job description

Ci4 builds autonomous platforms and the AI autonomy stack that runs them, tackling complex, dangerous, or repetitive tasks across maritime and land domains. Our systems rely on tightly integrated hardware and software working together in harsh, real-world environments, including underwater and defense operations. We are looking for a Senior RF PCB Design Engineer to lead the design of RF and mixed-signal printed circuit boards for our autonomous platforms. You will own board designs from schematic capture through layout, simulation, and bring-up, working closely with systems, firmware, and mechanical engineers to get RF-critical hardware into the field.

Key Responsibilities

• Design multilayer RF and mixed-signal PCBs, including schematic capture, stackup definition, and layout for high-frequency circuits.
• Design and optimize RF transmission lines, impedance-controlled traces, matching networks, and shielding for signal integrity.
• Select and integrate RF components such as amplifiers, filters, mixers, antennas, and RF connectors.
• Perform pre- and post-layout simulations (S-parameters, signal integrity, EMI/EMC) using tools such as ADS, HFSS, or similar.
• Collaborate with systems engineers to define RF architecture and interface requirements for communication and sensor subsystems used on autonomous underwater and land platforms.
• Support board bring-up, debugging, and testing in the lab, including use of spectrum analyzers, network analyzers, and signal generators.
• Work with contract manufacturers on fabrication, assembly, and DFM/DFT reviews for RF boards.
• Document design decisions, test results, and design files for internal use and defense customer requirements where applicable.

What we're looking for

• 7+ years of hands-on experience designing RF PCBs, with a track record of boards that shipped into production or field-tested systems.
• Strong background in RF circuit design fundamentals: impedance matching, transmission line theory, filter design, and antenna interfacing.
• Proficiency with PCB design tools such as Altium Designer or Cadence Allegro, including RF-specific layout techniques.
• Experience with RF simulation and modeling tools such as ADS, HFSS, or CST.
• Hands-on lab experience with RF test equipment: spectrum analyzers, VNAs, signal generators, and oscilloscopes.
• Solid understanding of EMI/EMC design practices and mitigation techniques.
• Ability to read and interpret system-level RF architecture and translate it into board-level design.
• Experience working on defense, aerospace, or underwater systems is a strong plus.
• Familiarity with communication protocols relevant to autonomous systems (e.g., SATCOM, acoustic modems, wireless links) is a plus.
• Bachelor's or Master's degree in Electrical Engineering, RF Engineering, or a related field.
• Ability to work on-site with hardware labs and collaborate closely with cross-functional engineering teams.

About Ci4

Building Intelligent, Unmanned Platforms-Ci4 builds autonomous platforms and the AI autonomy stack that runs them to handle complex, dangerous or repetitive tasks. Our solutions span a range of applications in the maritime and land domains.