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Senior Optical Manufacturing Test Engineer - Software Automation

Lumilens· Operations
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ThailandFull-timePosted 2mo ago

About the role

Optical Manufacturing Test Engineer specializing in software automation who validates complex Layer 1/Layer 2 systems, develops Python-based test frameworks, and supports NPI and high-volume manufacturing of photonic components and systems at Lumilens.

Responsibilities

  • Collaborate with design engineering and manufacturing teams to define and develop test software for high-volume manufacturing of high-end optical components.
  • End-to-end manufacturing test ownership: ensure modifications and upgrades to test/manufacturing software are under change control and follow QMS requirements (revision control, bug tracking, tester updates, regression testing, test logs, etc.).
  • Keep documentation and test specifications up to date; use systematic processes for test cases, results and defect management.
  • Proficient in using version control systems like Github/Bitbucket
  • Perform functional, regression, and performance testing on Layer 1 and Layer 2 network systems; validate hardware/software integration with optical interfaces and network switches; configure and use traffic generators (e.g., IXIA) to simulate networks.
  • Develop, maintain, and execute automated test cases in Python.
  • Continuously improve test frameworks and methodologies.
  • Integrate test software with cloud monitoring and reporting tools
  • Collaborate with developers and hardware engineers to identify, reproduce, and resolve defects; support troubleshooting and root cause analysis.
  • Analyze, define, develop, and execute continuous improvement plans to achieve test yield, cycle time, throughput, and scrap reduction.
  • Collaborate with quality teams for qualification testing; ensure DFM/DFT guidelines are met.
  • Generate comprehensive test reports for internal and external stakeholders.
  • Develop and implement troubleshooting guidelines and automated tools, templates, and data analysis for testers/products in manufacturing.
  • Collaborate with software engineers, IT and database architects to improve test data management and analysis.

Qualifications

  • Bachelor’s degree in Electrical Engineering, Industrial Engineering, Physics, Computer Science, or related field
  • 7 years hand-on experience in software testing and test automation of optical transceiver products including Silicon Photonics
  • Experiences in transceiver module tests at 400G, 800G, 1.6T, etc. (preferred)
  • Yield analysis, problem solving, and implementation of manufacturing processes
  • Familiarity with processor communication interfaces and test automation tools
  • Data query and data analysis skills; statistical tools/techniques
  • SPC, GR&R, tester correlation, and report generation
  • C# and/or Python with database integration (SQL, NoSQL) for test data logging/analysis (plus)
  • Scripting for automation (Python, LabVIEW, Visual Basic; Shell scripting a plus)
  • Unit and integration testing experience
  • Layer 1/Layer 2 networking protocols; optical testing, network switches, IXIA traffic generators
  • OOP concepts; Windows Forms or WPF
  • Hardware communication protocols: NI-VISA, SCPI, RS-232, TCP/IP
  • Version control: Github, Bitbucket or SVN
  • Ongoing reliability testing and quality control best practices
  • Understanding of quality management systems and standards
  • Project management across multiple tests in fast-paced environment
  • Ability to work in geographically diverse cross-functional teams
  • Strong English communication and presentation skills; ability to train/mentor peers
  • Willingness to travel internationally

Skills

Required:Test automationPythonNetworking (Layer 1/Layer 2)Version control
Nice to have:C#/SQL/NoSQLDX/DFM/DFT

Benefits

  • Competitive salary
  • Stock options
  • Health insurance
  • Flexible work arrangements
  • Professional development opportunities
  • Exposure to cutting-edge optical/photonics hardware and AI-related infrastructure
Last updated Aug 8, 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

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