Principal Systems Engineer

Job Summary & Responsibilities

We are seeking a Principal Systems Engineer to provide technical leadership in the advancement of the existing platforms and the introduction of new complex automated optical inspection and metrology systems for the semiconductor industry. This role spans the full product lifecycle, from early-stage research and concept development through productization, transfer to manufacturing, and field support. This is a hands-on cross-functional leadership role that interfaces closely with hardware, software, system test/verification/validation, manufacturing and service teams.

• Provide technical leadership through a full product development lifecycle, from early stage research to implementation.
• Own and execute core system engineering activities, including requirement definition and total system solution under technical, project, and business constraints.
• Drive early-stage concept development, rapid prototyping, and test iterations in collaboration with cross-functional teams.
• Lead technical planning for cross-functionally critical activities, including roadmap development, system integration, verification and validation, transfer to manufacturing and service readiness.
• Define system architecture and identify/mitigate technical risks; collaborate with engineers and subject-matter experts to ensure deep understanding of underlying technologies and design decisions.
• Evaluate, track, and clearly communicate development maturity and technical readiness level to stakeholders.
• Mentor and technically develop members of the engineering team, fostering system-level thinking.

Key Responsibilities

• Provide technical leadership through a full product development lifecycle, from early stage research to implementation.
• Own and execute core system engineering activities, including requirement definition and total system solution under technical, project, and business constraints.
• Drive early-stage concept development, rapid prototyping, and test iterations in collaboration with cross-functional teams.
• Lead technical planning for cross-functionally critical activities, including roadmap development, system integration, verification and validation, transfer to manufacturing and service readiness.
• Define system architecture and identify/mitigate technical risks; collaborate with engineers and subject-matter experts to ensure deep understanding of underlying technologies and design decisions.
• Evaluate, track, and clearly communicate development maturity and technical readiness level to stakeholders.
• Mentor and technically develop members of the engineering team, fostering system-level thinking.

Differentiating Factors

• Autonomy and Initiative: Works independently to implement strategic goals and establish operational plans. Demonstrates strong ownership, initiative, and accountability.
• Innovation and Complexity: Resolves issues that span wide range of difficulties across different functions. Develops innovative solutions to unique technical challenges and continuously improves existing systems, processes, and methodologies.
• Communication and Influence: Effective team player who can influence across engineering, operations, field service, and executive leadership. Comfortable engaging both internal and external stakeholders on critical technical matters.

Qualifications

• PhD (preferred) or advanced degree in Physics, Engineering, Materials Science, or a related field.
• 10+ years of experience developing high-precision optical or semiconductor capital equipment, or related complex technical systems.
• Proven ability to ideate, prototype, and bring complex products to market.
• Strong analytical and problem-solving skills, including structured root cause analysis and solution development.
• Experience with optical inspection, metrology, spectroscopy, ellipsometry, and reflectometry is a plus.
• Knowledge of statistical signal processing and advanced control systems is a plus.
• Experience with MATLAB, LabVIEW, and ZEMAX is a plus.
• Willingness to travel domestically and internationally (up to ~ 10%).

Why Join Onto Innovation?

• Competitive salaries and a comprehensive benefits package designed to support you and your family.
• Health, dental, and vision coverage, life and disability insurance, PTO, and a 401(k) with employer match.
• Employee Stock Purchase Program (ESPP), wellness initiatives, and cutting-edge tools.
• A collaborative, inclusive culture where your contributions are valued and recognized.

Career Path

• Base Salary Range: $144,000.00 - $216,000.00, offered in good faith and based on experience, location, and qualifications.
• Annual bonus opportunities and potential long-term incentives tied to both company and individual success.

Important Note on Export Compliance

• For certain positions requiring access to technical data, U.S. export licensing review may be necessary for applicants who are not U.S. Citizens, Permanent Residents, or other protected persons under 8 U.S.C. 1324b(a)(3).