Sr Engineer, Software Automation

Masimo•Irvine, CA

9h•$100,000 - $130,000•Onsite

About The Position

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. This is an onsite position at our Irvine, CA. office.

Requirements

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

Nice To Haves

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

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.