Senior Test Engineer - App Certification; Embedded Systems

Position: Senior Test Engineer - App Certification (Embedded Systems)
An Amazing Career Opportunity for a Senior Test Engineer - App Certification (Embedded Systems)!

Location:

Cypress, California

Job

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.

Who are we?

HID powers the trusted identities of the world's people, places, and things, allowing people to transact safely, work productively and travel freely.

We are a high-tech software company headquartered in Austin, TX, with over 4,500 worldwide employees. Check us out here:  and

Physical Access Control Solutions (PACS):

HID Physical Access Control Solutions (PACS) is at the forefront of securing spaces with advanced, reliable access control solutions. From cutting-edge readers, credentials and controllers, to mobile and biometric technologies, HID PACS empowers organizations worldwide to protect their people, property and assets with scalable, high-quality solutions.

This is more than just a job - it's your chance to join an industry leader to drive innovation in access control and make a real impact on global security solutions.

Are you ready to make a difference? Join us and help shape the future of security.

As our Senior Test Engineer, you'll support HID's success by:

* 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, uptime, or reliability

* Exceed controller processing, memory, or storage resources, or violate file system constraints.

* Misuse system interfaces, APIs, or communication channels

* Performing security-focused testing, including vulnerability analysis.

* Evaluating application behavior within embedded Linux environments, including:

* 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.

Your Experience and Background include:

* 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…