Sr Engineer, GUI Instrument Software

Job Summary:

As a Sr Instrument Software Engineer, you will design, develop, and maintain high-performance graphical applications for next-generation patient monitoring devices. This role leverages strong expertise in C++ development, computer graphics, and interactive UI systems to build reliable, efficient, and visually intuitive user interfaces. You will work on performance-critical software, collaborate closely with cross-functional teams, and contribute throughout the full software lifecycle-from design and implementation to testing and documentation.

Day to day:

• Design and develop C++-based GUI applications and visualization tools for embedded medical devices.
• Implement and maintain graphics-driven user interfaces, balancing usability, performance, and memory constraints.
• Build and optimize runtime systems, data formats, and serialization pipelines to support responsive UI behavior.
• Apply strong multithreading, memory management, and performance optimization principles.
• Participate in peer design and code reviews, ensuring software quality and maintainability.
• Produce clear software documentation and technical specifications.
• Contribute to software testing and validation, supporting stable and reliable device behavior.
• Collaborate in a fast-paced, cross-disciplinary development environment.

Required Qualifications:

• Strong fundamentals in computer graphics and real-time rendering concepts.
• 5+ years of C++ software development experience in performance-critical systems.
• Hands-on experience with GUI design and development, including visual tooling and user-facing interfaces.
• Solid understanding of operating system concepts, including scheduling, memory management, and multi-threading.
• Experience with software configuration management tools (Git, Jira-style workflows).
• Excellent analytical, problem-solving, and debugging skills.
• Strong verbal and written communication skills.
• Ability to excel in a dynamic, fast-moving development environment.
• BS or MS degree in Computer Science, Electrical Engineering, or a related field.
• Ability to work onsite Monday - Friday in Irvine, CA.

Preferred Qualifications:

• Experience with Qt / QML or similar GUI frameworks.
• Experience with OpenGL / OpenGL ES and shading languages (GLSL).
• Background in GPU-accelerated or graphics-intensive applications.

Education:

• BS or MS degree in Computer Science or Engineering

Compensation:

The anticipated salary range for this position is $120,000 - $170,000 plus benefits. Actual placement within the range is dependent on multiple factors, including but not limited to skills, education, and experience. This position also qualifies for up to 10% annual bonus based on Company, department, and individual performance. Masimo offers benefits such as Medical, Dental, Vision, Life/AD&D, Disability Insurance, 401(k), Vacation, Sick, Holiday, Paid Maternity Leave, Flexible Spending Accounts, voluntary Accident, Critical Illness, Hospital, Long-Term Care, Employee Assistance Program, Pet Insurance, on-site Wellness Clinic, Fitness Center, Cafe. All benefits are subject to eligibility requirements.