Senior Software Engineer

Job Title

Senior Software Engineer

Role Summary

Design and implement high-performance, low-latency software for advanced semiconductor equipment (metrology, inspection, process control). Work on real-time control, data acquisition, image processing, and hardware-software integration for precision systems.

Collaborate with systems, electrical, mechanical, product, and field teams; mentor junior engineers and contribute to system architecture and testing strategies.

Experience Level

Senior-level. The posting requests 5+ years of professional software development experience; role requires proven experience with complex, hardware-integrated systems.

Responsibilities

Deliver production-quality software that interfaces with precision hardware and meets strict performance and timing requirements.

• Design, develop, and maintain high-performance, scalable software systems for semiconductor equipment.
• Implement real-time control, data acquisition, and image processing applications.
• Integrate software with sensors, motion systems, optics, embedded controllers, and other hardware.
• Participate in system architecture, performance optimization, and low-latency design.
• Develop and execute unit, integration, and system-level tests; participate in code reviews.
• Debug complex hardware-software interaction issues and support manufacturing, installation, and field service.
• Mentor junior engineers and document designs and interfaces.

Requirements

Must-have technical skills and experience.

• 5+ years professional software development experience working on complex systems or hardware-integrated environments.
• Proficiency in one or more of: C++, C#, Python.
• Strong object-oriented design, data structures, and algorithms skills.
• Experience with multithreading, concurrency, and real-time systems.
• Experience with version control systems (e.g., Git) and software testing practices.
• Proven ability to debug cross-domain issues involving hardware and embedded controllers.
• Effective communication, teamwork, and ownership mindset.
• May require U.S. export licensing review for applicants who are not U.S. citizens or protected persons.

Nice-to-have:

• Experience in semiconductor equipment, photonics, robotics, or precision instrumentation.
• Motion control, machine vision, or image processing experience.
• Experience with RTOS or embedded systems, distributed systems, high-throughput data processing, or UI frameworks (e.g., Qt, WPF).
• Exposure to cloud-based data infrastructure or Industry 4.0 environments.

Education Requirements

Bachelor’s or Master’s degree in Computer Science, Software Engineering, Electrical Engineering, or a related technical field is listed as the preferred academic background.

About the Company

Company: Onto Innovation

Headquarters: Wilmington, MA, United States

Onto Innovation develops process-control solutions for the semiconductor industry, offering optical inspection, 3D metrology, defect inspection, composition analysis, factory analytics, and lithography technologies to improve yield, performance, and reliability across the semiconductor value chain.