Senior Embedded Firmware Test Engineer - Pytest & Modbus Protocols

Job Description

You will leverage your expertise in firmware validation, automation, and industrial protocols to deliver high-quality products.

Key Responsibilities:

Firmware Test Strategy & Execution:

• Design, develop, and execute comprehensive test plans, test cases, and test strategies for embedded device firmware, gateways, and edge controllers.
• Perform rigorous black-box and white-box testing of firmware to identify defects, validate functionality, and ensure strict adherence to specifications.
• Collaborate closely with firmware development teams to deeply understand requirements, provide early feedback on designs, and ensure the testability of features.

Industrial Protocol Testing:

• Lead the testing and validation of critical industrial communication protocols, with a strong preference for Modbus (TCP/RTU).
• Apply experience in testing other industrial protocols like BACnet and OPC-UA (highly valued).
• Develop and execute complex test scenarios to ensure robust and compliant communication between devices and systems.

Hardware-in-the-Loop (HIL) Testing:

• Possess extensive experience in setting up and executing Hardware-in-the-Loop (HIL) testing environments for embedded devices.
• Utilize and integrate various hardware components and test tools to accurately simulate real-world conditions and validate device behavior.

Connectivity Protocol Validation:

• Conduct thorough testing of various connectivity protocols including Ethernet, RS485, RS232, and CAN bus, ensuring reliable data transfer and seamless device integration.

Test Automation & Scripting:

• Demonstrate hands-on experience with Python scripting for developing automated test cases, utilities, and robust test frameworks.
• Apply a strong understanding of Object-Oriented Programming (OOPs) concepts in Python for building scalable and maintainable automation solutions.
• Possess hands-on experience in designing and developing test automation frameworks using tools like Robot Framework, Pytest, or similar (e.g., Pybot).
• Develop and maintain automated test scripts for continuous integration and efficient regression testing.

Test Documentation & Management:

• Create detailed test plans, comprehensive test cases, and insightful test reports.
• Utilize and maintain test artifacts within version control systems like GIT.
• Report and track defects effectively using bug tracking tools such as JIRA or similar.

Tooling & Simulators:

• Be proficient in using in-house developed tools and simulators for effective firmware testing and debugging.
• Identify opportunities for new tool development or enhancements to significantly improve testing efficiency.

Collaboration & Communication:

• Work effectively within a cross-functional team, including hardware, firmware, and software engineers.
• Possess strong communication skills to articulate technical issues, test results, and recommendations clearly and concisely.

Required Skills & Qualifications:

• Experience: Strong experience (typically 5+ years) in Firmware testing for Industrial Embedded Devices, Gateways, and Edge Controllers.
• Industrial Protocols (Mandatory): Proven experience in Protocol Testing, especially with Modbus TCP/RTU. Knowledge of BACnet and OPC-UA is a significant plus.
• Connectivity Protocols: Hands-on experience with testing Ethernet, RS485, RS232, and CAN connectivity.
• Hardware-in-the-Loop (HIL): Direct experience with HIL testing setups and methodologies.
• Programming & Automation: Proficiency in Python scripting language, including Object-Oriented Programming (OOPs) concepts. Hands-on experience with Test Automation Framework design and development (Robot Framework, Pytest, or similar).
• Test Management: Experience in Test Case writing and Test Plan creation. Working knowledge of GIT or other software configuration management tools. Familiarity with JIRA or similar bug tracking tools.
• Problem-Solving: Strong analytical and problem-solving skills to troubleshoot complex firmware and hardware interactions.
• Communication: Excellent written and verbal communication skills.
• Education: Bachelor's or Master's degree in Electrical Engineering, Electronics Engineering, Computer Science, or a related field.