← All roles

Assistant Test Engineer - Optical Manufacturing

Lumilens· Operations
Apply on company site
Chon BuriFull-timePosted 1mo ago

About the role

The Assistant Test Engineer performs functional, performance, and reliability testing on optical transceiver products throughout manufacturing, ensuring compliance with OEM specifications and industry standards, while collaborating with Test Engineering, Quality, and Production to improve yield and throughput.

Responsibilities

  • Perform incoming, in-process, and final testing of optical transceivers (e.g., optical power, sensitivity, extinction ratio, wavelength, BER, eye diagram, jitter, TX/RX parametric testing).
  • Operate and maintain test equipment such as BERTs, optical power meters, optical spectrum analyzers, oscilloscopes, TEC controllers, and automated test stations.
  • Execute test plans and procedures according to OEM customer specifications and MSA standards.
  • Log, analyze, and report test data; identify and flag out-of-spec units, and support failure analysis and root cause investigation.
  • Calibrate and troubleshoot test fixtures, jigs, and automated test equipment (ATE).
  • Support burn-in, environmental (temperature/humidity), and reliability testing (e.g., HTOL, thermal cycling).
  • Maintain accurate documentation, test records, and traceability per quality system requirements (ISO 9001 / IATF / TL 9000, as applicable).
  • Collaborate with Test Engineering, Quality, and Production teams to improve test yield, throughput, and process efficiency.
  • Support new product introduction (NPI) test bring-up and validation for new OEM programs.
  • Ensure compliance with ESD, laser safety, and handling procedures for optical and electronic components.
  • Assist in developing or refining test scripts/software (Python, LabVIEW, TCL) alongside engineering, as needed.

Qualifications

  • Associate degree or technical diploma in Electronics, Photonics, Engineering Technology, or a related discipline; equivalent practical experience will be considered.
  • 2+ years of hands-on experience testing optical transceivers or similar photonic/optoelectronic components in a manufacturing or OEM environment.
  • Working knowledge of optical transceiver form factors (SFP/SFP+/SFP28, QSFP/QSFP28/QSFP-DD, OSFP, CFP2/CFP4) and MSA specifications.
  • Familiarity with optical and electrical test parameters: optical power, wavelength, extinction ratio, sensitivity, jitter, eye diagrams, and BER.
  • Experience operating test instruments: optical power meters, OSAs, BERTs, oscilloscopes, and network analyzers.
  • Understanding of fiber optic handling, cleaning, and connector types (LC, MPO/MTP).
  • Ability to read and interpret schematics, test procedures, and datasheets.
  • Basic data analysis skills (Excel; scripting a plus).
  • Strong attention to detail and documentation discipline.

Skills

Required:Optical transceiver testingTest instrumentationData analysis and documentation
Last updated Aug 29, 2026. Interested? Apply on the company site.

About Lumilens

Connectivity Platform for AI

Lumilens provides next-gen photonic interconnects for massively scaling out – and scaling up – AI compute infrastructure.

Photonic InterconnectsNext-Gen ManufacturingSystem-level knowledgeLumicore platformCPO/SiPh manufacturing
Company profileWebsite

More open roles at Lumilens