Onsite Senior Systems Software Automation Engineer

Masimo Corporation; Irvine (CA); On-site; USD 100,000 - 130,000; Full time

Benefits offered by this job

Medical

Dental

Vision

Life/AD&D

Disability Insurance

401(k)

Vacation

Sick

Holiday

Paid Maternity Leave

Flexible Spending Accounts

Pet Insurance

on-site Wellness Clinic

Fitness Center

Cafe

Job summary

Masimo Corporation in Irvine, CA is seeking a Sr Engineer, Systems Software Automation to design, develop, and maintain scalable test automation frameworks and infrastructure for complex distributed systems, including microservice platforms, on-prem and cloud deployments, and device integrations.

The role emphasizes automation across system, integration, functional, and performance testing with hardware-in-the-loop capabilities and CI/CD integration, requiring strong Python/Java engineering and

Qualifications

• 5+ years of experience in software development, test automation, software verification, or a related engineering discipline.
• Strong software development experience with Python or Java, including object-oriented programming, debugging, and development of reusable software components.
• Experience designing and maintaining automated test frameworks or substantial automation infrastructure.
• Experience testing microservice-based software systems with a distributed network topology, in on-prem, cloud (e.g., AWS, Azure, GCP), or hybrid deployments.
• Experience with Git, CI/CD systems, and modern software development practices.
• Strong debugging, problem-solving, communication, and cross-functional collaboration skills.

Responsibilities

• Design, develop, and maintain scalable automated test frameworks and support infrastructure for instrument and system-level testing.
• Develop reusable test libraries, device interfaces, protocol libraries, utilities, and common automation components across instrument platforms and downstream system integrations.
• Build hardware-in-the-loop solutions (software simulators and emulators) for devices and external systems to enable isolated and reproducible testing.
• Develop automation for system, integration, functional, regression, protocol, performance, and reliability testing across microservice-based software and hybrid on-prem/cloud infrastructure.
• Validate protocol and data integrations between in-house and third-party devices and downstream system services.
• Integrate automated testing into CI/CD pipelines to support continuous validation and rapid feedback.
• Develop solutions for automated test execution, data collection, logging, reporting, and results analysis.
• Participate in the Quality process by producing verification records and traceability of testing to requirements
• Assist with setup and maintenance of test environment and laboratory equipment, both physical and virtual
• Partners with Test, Software, Systems, Hardware, and Quality Engineering teams to develop test strategies and improve product testability and observability.
• Contribute to system and product test strategies with an emphasis on automation, repeatability, scalability, and maintainability.
• Collaborate with development teams during product design to improve system testability, observability, interfaces, communication protocols, and diagnostic capabilities.
• Mentor engineers contributing to the automation codebase and establish best practices for software architecture, code quality, maintainability, and reuse.
• Participate in technical design and code reviews and provide technical leadership for test automation initiatives.

Skills

Python

Java

Test automation

Distributed systems

Git

CI/CD

Debugging

Education

Bachelor's degree in CS/CE/SE

Master's degree preferred

Tools

pytest

TestNG

VMware ESXi

Job description

Masimo Corporation in Irvine, CA is seeking a Sr Engineer, Systems Software Automation to design, develop, and maintain scalable test automation frameworks and infrastructure for complex distributed systems, including microservice platforms, on-prem and cloud deployments, and device integrations.

The role emphasizes automation across system, integration, functional, and performance testing with hardware-in-the-loop capabilities and CI/CD integration, requiring strong Python/Java engineering and