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Control and Test Engineer

Xscape Photonics
August 31, 2026
Full-time
On-site
Santa Clara, California, United States
Test Engineering Jobs, Level - Mid-Career

Job Title

Control and Test Engineer

Role Summary

Develop, implement, and validate control algorithms and test procedures for integrated photonic circuits to ensure stable optical performance. Work closely with photonics, hardware, and firmware teams to model systems, execute validation tests, and analyze measurement data.

Experience Level

Mid-level. See Education Requirements for specific years-of-experience guidance.

Responsibilities

Primary technical responsibilities for this role include:

  • Design and implement test plans, scripts, methodologies, and protocols for control-system validation.
  • Develop control algorithms for initialization and stabilization of photonic components (lasers, ring modulators, MZI multiplexers/demultiplexers, ring filters).
  • Implement and coordinate multiple control loops across photonic subsystems, integrating with hardware and firmware.
  • Perform rigorous validation tests to assess signal quality and system performance under varied environmental conditions.
  • Automate test execution and equipment control using scripting to run lab equipment and custom hardware.
  • Analyze measurement data and produce statistical visualizations to extract actionable insights.
  • Collaborate with cross-functional teams to resolve issues and improve product designs.

Requirements

Must-have technical skills and experience:

  • Strong knowledge of control theory and practical implementation (including PID and signal-processing techniques).
  • Experience with optical test equipment such as optical spectrum analyzers, power meters, and interferometers.
  • Proficient scripting skills (Python or similar) for test automation and equipment control.
  • In-depth knowledge of photonic components and systems: lasers, optical amplifiers, modulators, filters, and photodetectors.
  • Familiarity with optical simulation and modeling tools for system design and analysis.
  • Strong analytical and problem-solving skills and effective communication in cross-functional teams.

Nice-to-have:

  • Hands-on experience with printed circuit boards and embedded firmware.

Education Requirements

Master's degree in Optical Engineering, Electrical Engineering, or a related field with a minimum of 5 years of industry experience, OR PhD in Optical Engineering, Electrical Engineering, or a related field with a minimum of 2 years of industry experience.


About the Company

Company: Xscape Photonics

Headquarters: Santa Clara, California, United States

Developer of integrated photonics solutions and instrumentation, specializing in photonic circuits, control systems, and test methodologies for optical communication and sensing applications. Works on device integration, control algorithms, and validation of photonic hardware and firmware.

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Date Posted: 2026-08-29