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Carrier • Bang Khayaeng Subdistrict, Thailand
Role & seniority: Quality Assurance / Software & Firmware Testing Engineer; 3–5+ years in embedded systems, IoT devices, or consumer electronics.
Stack/tools: Embedded testing tools (logic analyzers, protocol analyzers, debuggers, measurement equipment); communication interfaces/protocols (UART, SPI, I²C, CAN, Modbus, MQTT, HTTP/REST, BLE/Wi‑Fi); QA tools (JIRA, TestRail, Git); CI/CD/test automation.
Develop and execute test plans, test cases, and test scripts for firmware and system modules (HVAC control, IoT connectivity).
Perform functional, regression, integration, system, and performance testing; defect tracking and root-cause analysis; provide actionable feedback.
Prepare test documentation; support CI/CD automation; collaborate with cross-functional teams (embedded, hardware, cloud, production).
Must-have skills: Bachelor’s in Computer/Electrical Engineering or related field; 3–5+ years in software testing/QA; strong understanding of embedded firmware, microcontroller-based systems, and real-time constraints; experience testing protocols (UART, SPI, I²C, CAN, Modbus, MQTT); proficiency with debugging tools; English communication.
Nice-to-haves: Experience with RTOS (e.g., FreeRTOS); knowledge of CI/CD pipelines and automated testing frameworks; HVAC/IoT/embedded Linux exposure; basic C/C++ for reading/debugging code.
Location & work type: Location and work type not specified.
Key Responsibilities Software & Firmware Testing - Develop and execute test plans, test cases, and test scripts for embedded firmware and system modules. - Perform functional, regression, integration, system, and performance testing of HVAC control and IoT connectivity features. - Validate communication interfaces and protocols (UART, SPI, I²C, CAN, Modbus, MQTT, HTTP/REST, BLE/Wi-Fi). Quality Assurance - Ensure firmware quality through systematic testing, defect tracking, and root-cause analysis. - Work closely with development teams to validate implementation and provide actionable feedback. - Verify compliance with global quality, safety, and regulatory standards. Debugging & Issue Investigation - Use tools such as logic analyzers, protocol analyzers, debuggers, and measurement equipment to support fault diagnosis. - Collaborate with cross-functional teams (embedded software, hardware, cloud, production, service) to resolve complex issues. Processes & Documentation - Prepare clear test documentation, including test reports, defect logs, and validation summaries. - Support CI/CD test automation efforts (unit, integration, and system-level automation). - Contribute to improving QA methodologies, test coverage, and test efficiency. Cross‑Team Collaboration - Work with mobile and cloud teams on data model validation and communication interface testing. - Participate in field trials, system integration testing, and post‑launch issue investigation. Qualifications & Experience Required - Bachelor’s degree in Computer Engineering, Electrical Engineering, Computer Science, or related field. - 3–5+ years of experience in software testing or QA, preferably in embedded systems, IoT devices, or consumer electronics. - Strong understanding of embedded firmware behaviors, microcontroller-based systems, and real-time constraints. - Experience testing communication interfaces and protocols (e.g., UART, SPI, I²C, CAN, Modbus, MQTT). - Familiarity with tools such as JIRA, TestRail, Git, or similar. - Ability to analyze issues using debuggers, logic analyzers, or protocol analyzers. - Good written and spoken English for cross-functional collaboration. Preferred - Experience with RTOS-based systems (e.g., FreeRTOS). - Knowledge of CI/CD pipelines and automated testing frameworks. - Experience with HVAC, IoT connectivity, or embedded Linux environments. - Basic familiarity with C/C++ to read code for debugging test failures. Carrier is An Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status, age or any other federally protected class. Job Applicant's Privacy Notice: Click on this link to read the Job Applicant's Privacy Notice At Carrier we make modern life possible by delivering groundbreaking systems and services that help homes, buildings and shipping become safer, smarter and more sustainable. We exceed the expectations of our customers by anticipating industry trends, working tirelessly to master and revolutionize them. Our team of approximately 56,000 dedicated individuals continues to mold industry standards by pursuing the latest research and developments to improve the lives of our customers. We’re constantly growing, seeking out talented, likeminded people who are committed to our primary duty: to be the world’s first choice in security, shipping and HVAC technology.