Senior Staff Software Engineer

Credo•San Jose, CA

1d•$140,000 - $210,000

About The Position

Credo is seeking a Senior Staff Software Engineer to lead the development of scalable software systems for automated validation of 800G and 1.6T OSFP and QSFP-DD optical modules. You’ll architect lab automation frameworks, integrate advanced optical and electrical test equipment, and define the next-generation validation infrastructure that enables rapid deployment of Credo’s high-speed data center interconnect products. Credo’s mission is to transform connectivity at scale through fast, reliable, and energy-efficient system solutions. Our high-speed copper and optical interconnect products deliver industry-leading power and performance at up to 1.6T to meet the ever-expanding data infrastructure demands of AI. Our product portfolio includes ZeroFlap (ZF) Active Electrical Cables (AECs) and ZF optical transceivers, OmniConnect memory solutions, and a suite of retimers and DSPs for optical and copper Ethernet and PCIe, all leveraging the PILOT diagnostic and analytics software platform. Credo innovations enable our customers to connect the systems that connect the world. Credo is committed to creating an inclusive environment for all employees and welcome applicants from diverse backgrounds without regard to race, color, religion, gender, sex, sexual orientation, national origin, genetic information, age, disability, veteran status, or any other legally protected basis. If you have a disability or special need that requires accommodation to navigate our website or complete the application process, email [email protected].

Requirements

B.S. or M.S. in Electrical Engineering, Computer Engineering, Computer Science, or Photonics.
8+ years of experience in test automation, instrumentation, or optical systems.
Strong proficiency in Python and/or C++.
Hands-on experience with SCPI, PyVISA, and Linux.
Hands-on experience with DCAs, VNAs, optical switches, and VOAs.
Working knowledge of PAM4, signal integrity, and optical link budgets.
Experience with QSFP-DD and OSFP modules at 400G, 800G, and 1.6T.

Nice To Haves

Experience automating Arista EOS, SONiC, or Cumulus Linux.
Familiarity with IEEE 802.3 and OIF specifications.
Experience with high-volume validation or manufacturing test systems.

Responsibilities

Architect and develop lab automation frameworks in Python and C++.
Integrate and control instrumentation using SCPI, VISA, and REST APIs.
Automate testing with DCAs (eye, jitter, TDECQ) and VNAs (S-parameters).
Develop workflows with optical switches and VOAs for margin and sensitivity testing.
Enable system-level validation across Arista EOS, NVIDIA (Cumulus/SONiC), and Juniper platforms.
Automate 800G and 1.6T traffic and breakout modes using traffic generators.
Build data pipelines, dashboards, and statistical analysis tools for test results.
Lead distributed lab orchestration, CI/CD integration, and test infrastructure.