Credo · 5 hours ago
Principal Optical Module Application Engineer
San Jose, CA
Full-time
Onsite
Lead/Staff
$190K/yr - $250K/yr
12+ years expCredo is a leader in high-speed connectivity solutions, committed to innovation and collaboration. They are seeking a Principal Optical Module Application Engineer to drive customer-facing technical engagement for their Zero-Flap optical module products, enabling successful deployment and performance optimization in complex systems.
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Responsibilities
Deep expertise in troubleshooting optical modules, with strong customer‑facing technical skills. Able to understand how optical modules behave under different host system architectures and translate customer issues into structured engineering tasks for internal teams
Support customer sites by troubleshooting electrical, optical, firmware, and interoperability‑related issues
Learn and analyze customer use cases, including system hardware architecture, firmware behavior, operating conditions, and software drivers where Credo modules are deployed
Build automation infrastructure and test environments that accurately represent customer systems for validation and issue reproduction
Develop test scripts and automated evaluation flows to measure module performance under customer‑equivalent conditions
Collaborate closely with internal optical, mechanical, firmware, hardware, and validation teams to identify root‑cause issues and drive resolution
Collect, consolidate, and interpret engineering data across multiple domains (optical parameters, host signals, firmware logs, system telemetry, etc.) to identify areas for improvement
Prepare customer‑facing technical reports, including performance summaries, failure analyses, and recommended corrective actions, and present them as needed
Lead on‑site technical engagements with customers, driving alignment on test plans, performance expectations, and deployment conditions
Provide insights to product development teams to improve module robustness, firmware behavior, and system compatibility
Qualification
Required
B.S. in Electrical Engineering, Communication, Optics or Physics, plus 12+ years of relevant work experience
Strong understanding of optical pluggable modules and standards (IEEE, CMIS, QSFP-DD, OSFP)
Hands-on experience with optical, electrical test equipment (e.g., DCA, BERT, scopes, host system) and switches and NICs
Deep knowledge of optical modules and how they interact with the customers' hardware and software environments
Ability to diagnose issues across firmware, optical, mechanical, and system domains
Test automation using scripting languages such as Python
Proven ability to drive data-based root-cause investigations and to design experiments upfront that produce clear, defensible engineering conclusions and actionable next steps
Strong communication skills, with the ability to interface directly with customers and internal engineering teams
Preferred
MS or PhD. in Electrical Engineering, Communication, Optics or Physics, plus 10+ years of relevant work experience
Experience with large-scale data analysis and reporting for customer deliverables
Experience building customer-representative testbeds, including host systems, traffic generators, and automation frameworks
Strong system-level perspective — ability to correlate module behavior with host design choices
Experience supporting top-tier hyperscale and datacenter customers
Understanding of customers' optical module qualification and deployment procedures
Benefits
Health / Dental / Vision Insurance
Time off plus paid holidays, parental leave
Employee discounts
Retirement plans, financial resources, and tax-saving programs
Mental health and wellbeing programs
And more!
Company
Credo
Credo’s mission is to advance high-speed connectivity solutions that deliver optimized performance, reliability, energy efficiency, and security for the next generation of AI-driven applications, cloud computing, and hyperscale networks.
501-1000 employees
H1B Sponsorship
Credo has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (14)
2024 (13)
2023 (8)
2022 (3)
2021 (5)
2020 (5)
Funding
Current Stage
Public CompanyTotal Funding
$108MKey Investors
BlackRockWalden International
2022-01-27IPO
2020-06-06Series D· $100M
2015-08-31Series A· $8M
Leadership Team
Bill Brennan
President & CEO
L
Lawrence Cheng
CTO and Co-Founder
Recent News
Business Wire
2026-01-22
2025-12-30
2025-12-03
Company data provided by crunchbase