Senior Test Engineer - App Certification (Embedded Systems)

Senior Test Engineer - App Certification (Embedded Systems) Location: Cypress, California Job ID: 46731 HID Global is seeking a motivated and experienced Senior Test Engineer – App Certification (Embedded Systems) to join our dynamic quality assurance team. In this role, you will focus on validating 3rd‑party applications integrated with Mercury controllers, ensuring they meet strict security, stability, compatibility, and resource usage requirements. This role is responsible for making sure that applications do not compromise the firmware, operating system, hardware resources, or overall system integrity. You will play a critical role in safeguarding our devices from vulnerabilities introduced by external applications while collaborating with global teams and driving quality and security best practices. Responsibilities Leading validation and certification testing of 3rd‑party applications from a platform integrity and security perspective. Ensuring applications do not compromise device or firmware security, impact system stability, exceed controller processing/memory/storage resources or violate file system constraints, or misuse system interfaces, APIs, or communication channels. Performing security‑focused testing, including vulnerability analysis. Evaluating application behavior within embedded Linux environments: process isolation, file system access, resource consumption, system calls, and permissions. Validating safe interaction with controller firmware, OS, and hardware interfaces. Conducting compatibility and integration testing with controller APIs and communication protocols: REST, MQTT, CoAP. Performing network and protocol analysis using tools such as Wireshark and packet sniffers. Testing and validating serial communication interfaces and low‑level protocols. Monitoring runtime behavior to detect abnormal or malicious activity. Developing and maintaining automated test frameworks and CI‑CD pipelines. Writing scripts for test automation, monitoring, and security validation. Defining and enforcing application acceptance criteria and certification standards. Identifying risks introduced by untrusted or third‑party code execution. Documenting security findings, validation results, and certification outcomes. Collaborating with engineering, product, and external partners on secure integration practices. Mentoring junior engineers and promoting best practices in embedded QA and security testing. Experience and Background Bachelor's degree in Computer Engineering, Computer Science, or related field (or equivalent experience). 5+ years of QA experience with embedded systems, firmware, or IoT devices. Strong understanding of Linux‑based embedded systems. Experience with system‑level testing. Solid knowledge of hardware/software/firmware constraints in embedded environments. Experience with resource monitoring, benchmarking, and profiling (CPU, memory, storage). Hands‑on experience with REST APIs, MQTT, CoAP. Experience with network analysis and packet capture tools (e.g., Wireshark). Familiarity with serial communication protocols (UART, RS‑232, RS‑485). Strong experience with test automation frameworks and environments. Proficiency in Bash, or similar scripting languages. Experience in software security testing, vulnerability assessment, or system hardening validation. Strong understanding of QA methodologies, test design, and defect tracking. Excellent troubleshooting, analytical, and problem‑solving skills. Strong communication skills, including working with external partners. Preferred Experience with embedded platform certification programs or app validation frameworks. Understanding of secure application onboarding and approval workflows for embedded or IoT platforms. Experience validating untrusted or third‑party code execution in constrained environments. Familiarity with sandboxing, process isolation, or lightweight containerization in embedded Linux. Knowledge of firmware security concepts (secure boot, code signing, chain of trust, TEE). Background in penetration testing, fuzz testing, or threat modeling. Experience analyzing runtime system behavior and anomaly detection. Familiarity with access control systems (PACS) and controller architectures. Experience with secure firmware update mechanisms and device lifecycle management. Benefits Competitive salary and rewards package. Competitive benefits and annual leave offering, allowing for work‑life balance. A vibrant, welcoming & inclusive culture. Extensive career development opportunities and resources to maximize your potential. Part of a global organization that pioneers the hardware, software and services that allow people to confidently navigate the physical and digital worlds. EEO Statement HID is committed to building a diverse, equitable, and inclusive workforce that reflects the global communities we serve. As an equal opportunity employer, we welcome applications from individuals of all backgrounds, experiences, and perspectives. We evaluate applicants without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, disability, age, veteran status, or any other legally protected characteristic. Our goal is to create a workplace that empowers everyone to thrive and be their authentic selves, fostering an environment of mutual respect and inclusivity. If you have a disability and require assistance or accommodation to participate in the application process or to perform essential job functions, please contact View email address on click.appcast.io. HID does not accept unsolicited resumes from headhunters, recruitment agencies, or fee‑based recruitment services. We are not responsible for any fees related to unsolicited resumes. HID is committed to a responsible use of AI‑powered tools in the recruitment process. These tools assist in screening applicant resumes, and all candidates are reviewed by our Talent Acquisition team. AI is used to support, not replace, human judgment in the evaluation process. #J-18808-Ljbffr HID Global Corporation