Embedded Firmware Engineer

Firmware Engineer – Optical Transceivers Location: San Jose, California Employment Type: Full-time Experience: 2–3 years About the Opportunity Join a growing optical communications company developing high-performance transceivers for cloud data centers, telecommunications networks, and high-speed interconnect applications.

We are seeking a Firmware Engineer with hands-on embedded development experience to support optical transceiver products ranging from 10G to 1.6T. You will collaborate with hardware, optics, and test teams across the product development lifecycle.

Key Responsibilities

• Develop, test, and maintain embedded firmware for optical transceiver modules.
• Implement control and monitoring functions for lasers, thermoelectric coolers (TECs), and photodiodes.
• Integrate and debug low-level drivers and state machines, including I²C, SPI, and MDIO interfaces.
• Support implementation of industry standards, including CMIS, SFF, and IEEE specifications.
• Collaborate with hardware and test engineers on new module bring-up and debugging.
• Participate in firmware validation and system performance testing.
• Contribute to code reviews, technical documentation, and process improvements.

Requirements

• Bachelor’s degree in Electrical Engineering, Computer Engineering, or a related field.
• 2–3 years of embedded firmware development experience for optical transceivers or similar hardware.
• Proficiency in C and familiarity with embedded development tools such as Keil, IAR, or GCC.
• Understanding of digital communication protocols, including I²C, SPI, and UART.
• Basic knowledge of optical module architecture and control, including laser bias, temperature control, and diagnostics.
• Experience using lab equipment such as oscilloscopes, logic analyzers, and power meters.

Preferred Qualifications

• Experience with CMIS or SFF MSA-based transceiver firmware.
• Knowledge of DSP-based PAM4 optical modules and SerDes control interfaces.
• Familiarity with Python scripting for test automation and support.
• Understanding of hardware bring-up and system-level integration.
• What’s on Offer Opportunity to work on next-generation optical communication products.
• A focused engineering team with strong ownership and fast project cycles.
• Exposure to the full product development lifecycle and opportunities for technical growth.
• Competitive compensation and benefits.