Software Engineer, Software Testing

Junior Software Sustaining Engineer

Onto Innovation is a leader in process control, combining global scale with an expanded portfolio of leading-edge technologies that include: 3D metrology spanning the chip from nanometer-scale transistors to micron-level die-interconnects; macro defect inspection of wafers and packages; metal interconnect composition; factory analytics; and lithography for advanced semiconductor packaging. Our breadth of offerings across the entire semiconductor value chain helps our customers solve their most difficult yield, device performance, quality, and reliability issues.

Onto Innovation strives to optimize customers' critical path of progress by making them smarter, faster and more efficient.

Job Summary & Responsibilities

The Junior Software Sustaining Engineer supports released semiconductor inspection and metrology products by troubleshooting customer issues, investigating defects, implementing software fixes, and assisting with product maintenance activities. This role works closely with senior engineers, technical support, applications, and field service teams to improve software reliability, usability, and customer satisfaction.

The ideal candidate is a motivated engineer with a strong technical foundation, curiosity to investigate complex issues, and a desire to learn software development practices in a collaborative engineering environment.

• Investigate and resolve software defects identified by customers, field service, QA, and internal engineering teams.
• Support customer escalations through troubleshooting, root cause analysis, and verification of corrective actions.
• Develop, test, and maintain production-quality software enhancements under the guidance of senior engineers.
• Assist in reproducing field issues using logs, system data, and test environments.
• Participate in code reviews and incorporate feedback from experienced engineers.
• Create and maintain unit tests, automated tests, and validation procedures.
• Collaborate with software, hardware, systems, applications, and support teams to diagnose system-level issues.
• Document software changes, troubleshooting procedures, and engineering findings.
• Support software releases, regression testing, and verification activities.
• Learn existing software architectures, development processes, and semiconductor inspection workflows.
• Contribute to continuous improvement initiatives that increase product stability, serviceability, and maintainability.

• Bachelor's degree in Computer Science, Software Engineering, Computer Engineering, Electrical Engineering, or related technical field.
• 0-3 years of software development experience.
• Working knowledge of C#, C++,.NET, or similar object-oriented programming languages.
• Understanding of software debugging and troubleshooting techniques.
• Familiarity with version control systems such as Git or Azure Dev Ops.
• Basic understanding of software design principles and object-oriented programming.
• Strong analytical and problem-solving skills.
• Effective written and verbal communication skills.
• Demonstrated ability to learn new technologies and work effectively in a team environment.

• Internship, co-op, or project experience involving software development.
• Experience with Windows desktop applications and GUI development.
• Exposure to hardware-software integration.
• Familiarity with automated testing or unit testing frameworks.
• Experience using debugging and diagnostic tools.
• Knowledge of semiconductor equipment, automation systems, motion control, or machine vision is a plus.

Why Join Onto Innovation?

At Onto Innovation, we believe your work should matter—and so should your well-being. That's why we offer competitive salaries and a comprehensive benefits package designed to support you and your family. From health, dental, and vision coverage to life and disability insurance, PTO, and a 401(k) with employer match, we've got you covered. You'll also enjoy access to our Employee Stock Purchase Program (ESPP), wellness initiatives, and cutting-edge tools—all within a collaborative, inclusive culture where your contributions are valued and recognized.

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