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Test Process Engineer

Semtech
May 08, 2026
Full-time
On-site
Alhambra, California, United States
$100,000 - $135,000 USD yearly
Process Engineering Jobs, Level - Senior

Job Title

Test Process Engineer

Role Summary

The Test Process Engineer implements and monitors wafer backend production processes in a semiconductor photonics manufacturing environment. This role owns day-to-day wafer backend WIP, analyzes test yields, manages production issues, and works with cross-functional teams to improve manufacturing efficiency.

Position is based in the Semtech Photonics Products group in Alhambra, CA (onsite).

Experience Level

Senior β€” minimum 10 years of relevant semiconductor laser wafer production experience.

Responsibilities

Primary responsibilities include ownership of production WIP, yield improvement, qualification planning, and production troubleshooting.

  • Own wafer backend production WIP and maintain daily production updates.
  • Analyze test yields and drive continuous improvement in manufacturing process efficiency.
  • Collaborate with Device Design Engineers, Quality Assurance, operators, and production engineers to streamline process steps and requirements.
  • Prepare and improve wafer qualification plans to meet ISO-9000 standards.
  • Troubleshoot manufacturing test failures, perform root cause analysis, and implement corrective actions in production environments.
  • Operate and support fiber-optics test instruments (laser controllers, optical power meters, optical spectrum analyzers) in production tests.
  • May require travel for OSAT and external test sites.

Requirements

Must-have technical skills and experience for successful performance in this role.

  • Advanced knowledge of wafer fabrication methodologies, parametric testing, and yield analysis.
  • Experience in semiconductor wafer fabrication and product test environments.
  • Proficient with at least one statistical analysis tool (JMP, Minitab, or MATLAB).
  • Demonstrated experience with troubleshooting manufacturing test failures and executing root cause analysis.
  • Extensive experience specifically in semiconductor lasers and photodiodes manufacturing environments.
  • Strong organizational skills and ability to manage multiple tasks concurrently.

Nice-to-have:

  • Experience with SolidWorks and MATLAB workflows.
  • Familiarity with Microsoft Office for reporting and data presentation.

Education Requirements

Associate's or Bachelor's degree in engineering or a related technical field (e.g., electrical, mechanical, materials, or similar).


About the Company

Company: Semtech

Headquarters: Camarillo, California, USA

Semtech Corporation is a high-performance semiconductor company providing IoT systems and Cloud connectivity solutions. The company focuses on delivering innovative technology solutions that support a smarter, more connected, and sustainable planet, with a dedication to quality across infrastructure, industrial, and consumer markets.

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Date Posted: 2026-05-08