Principal Architect, High-Speed Optical Transceivers

Infraeo; Round Rock (TX); On-site; USD 180,000 - 280,000; Full time

Job summary

Infraeo Inc. is seeking a Principal Engineer – High-Speed Optical Transceivers to lead the architecture, design, and development of next-generation high-speed transceiver products.

This role traverses concept through volume manufacturing and requires deep expertise in optical communications and advanced modulation technologies. You will define optical, electrical, mechanical, thermal, and firmware requirements; drive laser, modulator, DSP, and packaging choices; analyze PAM4 and coherent links;

Qualifications

• 10+ years of hands-on experience in high-speed optical transceiver design and development.
• Deep expertise in high-speed SerDes and signal integrity.
• Deep expertise in PAM4 and/or coherent modulation.
• Deep expertise in optical module packaging and thermal design.
• Deep expertise in optical and electrical characterization methods.
• Proven ability to lead complex, cross-functional technical programs.
• Strong analytical, troubleshooting, and communication skills.

Responsibilities

• Lead system architecture and end-to-end design of high-speed optical transceivers (e.g., 100G / 400G / 800G / 1.6T).
• Define and own optical, electrical, mechanical, thermal, and firmware requirements.
• Drive technology selection including lasers, modulators, drivers, TIAs, DSPs, photodiodes, optics, and packaging.
• Analyze and optimize PAM4 and coherent optical links, including link budgets and performance margins.
• Oversee design verification, validation, and qualification testing.
• Troubleshoot complex issues related to signal integrity, BER, jitter, optical performance, and reliability.
• Partner with ASIC/DSP, firmware, hardware, manufacturing, and quality teams.
• Lead supplier technical reviews and manage component/vendor technical engagement.
• Support manufacturing ramp, yield improvement, and cost optimization.
• Interface with customers on technical requirements, failure analysis, and field issues.
• Ensure compliance with industry standards (IEEE 802.3, OIF, relevant MSAs, Telcordia).
• Mentor senior and junior engineers and provide technical leadership across the organization.

Skills

High-speed transceiver design

SerDes

Signal integrity

PAM4 modulation

Coherent modulation

Optical packaging

Thermal design

Characterization methods

Leadership

Analytical skills

Communication skills

Education

Master’s in Optical Engineering

Master’s in Electrical Engineering

PhD in Optical Engineering

PhD in Physics

Job description

Infraeo Inc. is seeking a Principal Engineer – High-Speed Optical Transceivers to lead the architecture, design, and development of next-generation high-speed transceiver products.

This role traverses concept through volume manufacturing and requires deep expertise in optical communications and advanced modulation technologies. You will define optical, electrical, mechanical, thermal, and firmware requirements; drive laser, modulator, DSP, and packaging choices; analyze PAM4 and coherent links;