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# Senior Staff Software Engineer- Optical Test Automation

- **Company:** Credo Llc
- **Location:** San Jose, CA, United States
- **Experience:** Expert
- **Salary:** $140,000.0 - $210,000.0
- **Contract:** Permanent contract
- **Skills:** Automation of Tests, C++ (Programming Language), Computer Engineering, Continuous Integration, Data Centers, Linux, Python (Programming Language), Signal Integrity, Visual Systems, IEEE 802.3, Juniper, Information Technology, Statistics Packages, Restful APIs, Data Pipelines
- **Published:** May 24, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=6cdbfcdc1f723635

## About the Role

Do you have experience in Optics?, * 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.

Preferred Qualifications

 * 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.

## Description

Credo is seeking a Senior Staff Software Engineer- Optical Test Automation 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., * 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.


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