Jobs · Engineering · California

Optical Test Engineer, Tech Lead

Astera Labs · San Jose, CA · 1 wk ago
Engineering$175k–$215k/yrFull-time

Key Responsibilities

  • Lead the definition, development, and qualification of comprehensive test solutions for optical engines, including wafer-level, die-level, package-level, and system-level testing.
  • Design and implement optical test hardware and automation systems (e.g., active alignment, fiber array attachment, high-speed optical I/O characterization).
  • Develop test programs and methodologies for key photonic parameters: insertion loss, eye diagrams, BER, PAM4 signaling, optical power, wavelength, thermal performance, and reliability stress testing.
  • Collaborate closely with Silicon Photonics design, package engineering, product engineering, and manufacturing teams to optimize design-for-test (DFT) and manufacturability.
  • Drive yield improvement, failure analysis, and root-cause investigations for complex electro-optical failures in optical assemblies.
  • Establish correlations between bench/lab validation, ATE production test, and system-level performance.
  • Mentor junior engineers and provide technical direction on test architecture, equipment selection, and best practices for high-channel-count, high-speed optics.
  • Support qualification, reliability testing (e.g., HTOL, temperature cycling), and customer audits for optical products.
  • Evaluate and integrate new test technologies, instrumentation, and automation frameworks to scale optical production efficiently.
  • Contribute to roadmaps for next-generation optical test capabilities (e.g., higher data rates, multi-wavelength, advanced packaging).

Qualifications and Requirements

  • Education: MS or PhD in Electrical Engineering, Optical Engineering, Physics, or a related field.
  • Experience: 8+ years (Senior Staff) to 12+ years (Principal) of relevant experience in optical/photonic test engineering.
  • Strong background in optical, silicon photonics, or high-speed optical transceivers (800G/1.6T+).
  • Proven track record developing optical test solutions for wafer, package, or module-level testing in high-volume environments.
  • Deep expertise in optical test instrumentation (e.g., optical spectrum analyzers, BER testers, oscilloscopes, tunable lasers, power meters, fiber alignment systems).
  • Experience with automated test equipment (ATE), Python/LabVIEW/C# test development, and statistical process control (SPC).
  • Knowledge of PAM4 signaling, signal integrity, mixed-signal testing, and reliability standards for data center optics.

Preferred Skills and Experience

  • Hands-on experience with CPO-specific challenges: active alignment, thermal management, laser integration, fiber attach, and co-packaged ASIC testing.
  • Familiarity with industry standards (e.g., IEEE 802.3, OIF, CMIS) and working with hyperscalers or module vendors.
  • Experience in semiconductor foundry/OSAT ecosystems and transitioning from NPI to high-volume production.
  • Track record of technical leadership, patents, or publications in photonics test.
  • Strong problem-solving, communication, and cross-functional collaboration skills.

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