Principal Test Engineer

Sagamihara, Kanagawa, Japan • Posted June 25, 2026

Job Type: Full time

Location: Sagamihara, Kanagawa

Posted: June 25, 2026

Category: Engineers

Application Deadline: August 04, 2026

Role Description

It's fun to work in a company where people truly BELIEVE in what they're doing!
Job Summary: We are seeking an experienced and dynamic Test Engineer for our Test Development in Japan for EML and CW laser product lines. This role will be responsible for the development and implementation of world-class testing methodologies and tools to ensure product excellence. The ideal candidate will have extensive experience in driving innovation in testing practices, scaling testing operations for complex products in a fast-paced environment.
Key Responsibilities:
Develop, implement, and release to factory test strategies, processes, and tools that meet the required speed, scale, cost and quality for EML and CW laser production
Perform statistical data analysis and trouble shoot potential root causes for yield enhancement
Identify and drive initiatives for test automation, process improvements, test time and cost reductions, and yield improv...
                

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