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Job Summary:

The Sr Engineer, Software Automation is responsible for designing, developing, and maintaining automation frameworks to ensure the quality, security, and performance of on-premises server-client applications, mobile platforms (Android and iOS), and cloud-based services. This role requires expertise in test automation, networking, system-level validation, and secure software practices. The successful candidate will collaborate cross-functionally to validate complex, interconnected systems and drive continuous improvement in testing and product quality.

Please note this is an onsite position at our Irvine, CA. office.  

Duties & Responsibilities:

• Design, develop, and maintain automated test suites for on-premises applications, mobile platforms, and cloud services/APIs.
• Execute and analyze manual and automated test cases; troubleshoot issues using test results and logs.
• Validate system behavior in secure networking environments, ensuring alignment with cybersecurity best practices.
• Collaborate with engineering, QA, DevOps, and security teams to ensure comprehensive coverage of functional, performance, and security testing.
• Build and manage complex test environments including physical infrastructure, mobile devices, and cloud/virtualized components.
• Identify and report potential security vulnerabilities in partnership with internal security and compliance teams.
• Contribute to CI/CD pipelines and integrate automation into development workflows.
• Document test strategies, execution results, and recommendations for quality improvements.
• Mentor junior engineers and promote a culture of quality, security, and continuous learning.

Minimum Qualifications:

• 5+ years of experience in software engineering or test automation

• Proficiency in Java and Python for automation scripting

• Strong knowledge of networking protocols and systems (e.g., TCP/IP, DNS, DHCP, HTTP/S)

• Experience with mobile testing tools (e.g., Appium, Espresso, XCUITest)

• Hands-on experience testing cloud applications and APIs (AWS, Azure, GCP, or private cloud)

• Familiarity with cybersecurity principles and secure coding/testing practices

• Experience working in secure network or compliance-driven environments

• Strong analytical, problem-solving, and communication skills

Preferred Qualifications:

• Master's degree in Computer Science, Engineering, Cybersecurity, or related field

• Experience with security testing tools and practices (e.g., static/dynamic analysis, vulnerability scanning, OWASP Top 10)

• Knowledge of authentication, authorization, encryption, and secure communications

• Hands-on experience with API security testing (e.g., Postman, REST Assured, OWASP ZAP)

• Familiarity with DevSecOps practices and integrating security into CI/CD pipelines

• Experience with performance, load, or penetration testing

• Background in Agile/Scrum development environments

Education: Bachelor's degree in Computer Science, Software Engineering, or related field.

Compensation: The anticipated range for this position is $100,000 - $130,000. 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.

Physical requirements/Work Environment:

This position primarily works in an office environment. It requires frequent sitting, standing and walking.  Daily use of a computer and other computing and digital devices is required.  May stand for extended periods when facilitating meetings or walking in the facilities. 

The physical demands of the position described herein are essential functions of the job and employees must be able to successfully perform these tasks for extended periods.  Reasonable accommodation may be made for those individuals with disabilities to perform the essential functions of the job described.