Role & responsibilities

- Lead complete RF/microwave and high-speed mixed-signal hardware architecture for next-generation optical transceivers, evaluation boards, reference platforms, and production test hardware.
- Design high-speed schematics and PCBAs for 100G/lane, 200G/lane, 400G/lane and beyond interconnects, supporting 800G, 1.6T, 3.2T and future architectures where applicable.
- Own board-level tradeoffs for signal integrity, power integrity, EMI/EMC, grounding, return path control, isolation, thermal performance, manufacturability, serviceability, cost, reliability, and schedule.
- Architect and design high-performance instrumentation used for validation, characterization, calibration, automation, manufacturing test, and sustaining support of fiber optic transceiver modules.
- Select and qualify high-speed, RF, microwave, analog, precision measurement, clocking, DSP, control, sensing, connector, cable, interconnect, and power components.
- Define PCB stackups, materials, copper weights, dielectric selection, via structures, backdrill strategy, impedance targets, loss budgets, fabrication rules, assembly constraints, and acceptance criteria.
- Partner with SI/PI, packaging, optics, firmware, software, mechanical, thermal, reliability, manufacturing, supply chain, and operations teams to deliver complete product and test solutions.
- Lead schematic capture, layout strategy, layout review, RF structure review, BOM review, DFM/DFT review, design verification, bring-up, debug, characterization, and production release.
- Define digital control interfaces and hardware/firmware interaction requirements for CPLDs, FPGAs, microcontrollers, DSPs, drivers, TIAs, modulators, lasers, sensors, ADCs, DACs, and power controllers.
- Develop validation plans, test methods, calibration approaches, correlation methods, guardband strategies,



and production screening methods for high-volume test environments.
- Perform hands-on lab measurements and debug using oscilloscopes, VNAs, spectrum analyzers, BERTs, pattern generators, optical power meters, optical spectrum analyzers, thermal chambers, power supplies, SMUs, and automated test systems.
- Lead design reviews, risk reviews, failure analysis, root cause analysis, corrective actions, and lessons-learned across programs.
- Mentor senior and mid-level engineers; establish hardware design best practices, checklists, libraries, reuse blocks, and review criteria.
- Engage with suppliers and technical partners on advanced components, connectors, PCB materials, laminates, cable assemblies, sockets, fixtures, and precision measurement technologies.
- Support critical customer discussions, roadmap evaluations, architecture tradeoffs, and executive-level technical reviews as required.

Preferred candidate profile

- 15+ years of direct experience designing RF/microwave, high-speed mixed-signal, analog, digital, and precision measurement hardware.
- 15+ years of hands-on schematic, PCB layout guidance, bring-up, debug, and verification experience for complex high-speed PCBAs.
- 15+ years of experience designing or architecting test equipment, validation hardware, manufacturing test boards, automation fixtures, or instrumentation for high-performance electronics and/or optical communications.




- Deep knowledge of high-speed PCB design for very-low-loss channels, including impedance control, crosstalk, skew, return loss, insertion loss, via transitions, connectors, cable launches, package breakout, return current, and reference plane management.
- Proven understanding of RF/microwave design practices including controlled impedance transmission lines, RF launches, baluns, couplers, filters, attenuators, terminations, clock distribution, shielding, isolation, and grounding.
- Expertise selecting PCB materials and stackups for high-frequency applications, including Rogers, Panasonic and equivalent low-loss laminate families, hybrid stackups, prepreg/core choices, resin systems, glass weave effects, fabrication tolerances, and cost/performance tradeoffs.
- Solid command of precision analog design including low-noise sensing, voltage/current/temperature measurement, ADC/DAC interfaces, op amps, references, power monitoring, calibration, offset/gain error, noise, drift, and thermal effects.
- Experience with optical module and networking ecosystems including OSFP, QSFP-DD and earlier MSA form factors; familiarity with CPO, XPO, NPO and 3.2T-class architecture challenges is strongly preferred.
- Ability to evaluate high-speed ICs, drivers, TIAs, DSPs, retimers, clocking devices, power devices, sensors, controllers, and RF/microwave components across major suppliers.
- Ability to create clear engineering documentation including architecture specifications, schematics, layout guidance, design review packages, validation plans, test reports, BOM rationale, risk registers, and manufacturing release documentation.
- Masters degree in Electrical Engineering, Electronics Engineering, Computer Engineering or related technical discipline; advanced degree preferred.

📌 Senior Principal Electrical Engineer (Hyderabad)
🏢 Coherent
📍 Hyderabad