Firmware Engineer

Location: Santa Clara, California Posted: 6/15/2026 Location Name: Santa Clara

Wage Max: 168,870.00 Annual Wage Min: 100,750.00 Annual Position Type: Full Time

Amphenol Communications Solutions (ACS), a division of Amphenol Corporation, is a world leader in interconnect solutions for Communications, Mobile, RF, Optics, and Commercial electronics markets. Amphenol Corporation is one of the world’s largest designers and manufacturers of electrical, electronic and fiber optic connectors and interconnect systems, antennas, sensors and sensor-based products and coaxial and high-speed specialty cable. ACS has an expansive global presence in research and development, manufacturing, and sales. We design and manufacture a wide range of innovative connectors as well as cable assemblies for diverse applications including server, storage, data center, mobile, RF, networking, industrial, business equipment, and automotive.

Position: Firmware Engineer

Location: Santa Clara, CA

Amphenol High Speed Products Group is the market leader for high speed, high bandwidth electrical connectors for the Telecom/Datacom market (Mobile Networks, Storage, Servers, Routers, Switches, etc.). Our products help to enable the electronics revolution and remain a key enabler for all the major Tier 1 OEMs globally. We have design, sales, and manufacturing locations globally and are currently seeking a Firmware Engineer to join our team located in Santa Clara, CA.

Summary

The Firmware Engineer will be responsible for embedded firmware development, debugging and technical support for high-speed optical transceivers. This role focuses on on-site customer technical support, field issue troubleshooting, product validation and firmware iteration, collaborating closely with global R&D teams to ensure stable delivery and smooth customer project implementation.

Key Responsibilities

• Develop, maintain and optimize embedded firmware for 100G/400G/800G/1.6T optical modules based on C/C++.
• Implement and debug industry standard protocols including CMIS, SFF-8636, SFF-8472, master I2C, MDIO, SPI and other mainstream interfaces.
• Provide on-site technical support for local US customers, conduct on-site debugging, problem investigation and failure resolution at customer labs and data centers.
• Collect customer feedback, sort out field defects, feed back to R&D team and push firmware revision and version upgrade.
• Cooperate with China team to synchronize technical solutions, sort out problem logs and summarize troubleshooting experience.
  
  

Requirements

• Bachelor’s degree or above in Electronic Engineering, Telecommunication, Optoelectronic Engineering, Computer Engineering or related majors.
• Proficiency in Mandarin
• 5+ years optical module firmware development experience, familiar with mainstream high-speed transceiver product architecture.
• Rich practical experience in 400G/800G QSFP-DD / OSFP module firmware development and debugging.
• Familiar with ADI, STM32, ARM embedded MCU development environment.
• Proficient in embedded C/C++ programming, skilled in firmware debugging and performance optimization.
• In-depth understanding of CMIS protocol, complete knowledge of optical module software development process.
• Familiar with optical path adjustment, optical power control, temperature compensation and related underlying logic.
• Able to independently use oscilloscope, logic analyzer and other tools for field problem positioning.
• Familiar with Python script development is preferred.
• Strong on-site emergency troubleshooting ability, able to travel frequently to customer sites across the US.
• Good service awareness and communication skills, able to accurately understand customer demands.
• Strong sense of responsibility, able to independently track and close customer technical issues.
• Adaptable to fast-paced working mode, willing to take short-term business trips.
  
  

The base salary range for this position is $100,750 – $168,870 USD annually. In determining rate of pay, Amphenol considers a variety of nondiscriminatory factors, including but not limited to geographic location, relevant industry experience, qualifications, skills, and education. It would be rare for an individual to be hired at or near the top of the range for a given role. Base salary is one facet of Amphenol’s total rewards package which includes participation in our comprehensive benefits program with medical, dental, and vision benefits effective day 1, vacation, sick leave, personal days, paid holidays, life insurance, short/long term disability, and matching 401K. Our Mechanical Application Development Engineers are also eligible to participate in an annual incentive bonus program.

Amphenol Corporation is proud of our reputation as an excellent employer. Our focus is to provide the highest level of support and responsiveness to both our employees and our customers, the world's largest technology companies. Amphenol Corporation offers the opportunity for career growth within a global organization. We believe that Amphenol Corporation is unique in that every employee, regardless of his or her position, has the ability to positively impact the business.

Amphenol is an “Equal Opportunity Employer” - Minority/Female/Disabled/Veteran/Sexual Orientation/Gender Identity/National Origin. For additional company information please visit our website at https://www.amphenol-cs.com/