Embedded QA & Test Engineer

We believe power is a promise - a shared commitment to be there for others when it matters most.

For more than 65 years, we've turned big ideas into solutions that help protect homes, strengthen businesses and build a more resilient, efficient, sustainable energy future.

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Major Responsibilities

Embedded Gateway & IoT Connectivity Testing:

• Test embedded C++ firmware on Linux/RTOS-based IoT gateways.
• Validate Azure IoT Hub communication workflows, including:
  • Telemetry messaging
  • Cloud-to-device (C2D) commands
  • Device Twins
  • Device Provisioning Service (DPS)
  • Certificate rotation and secure connectivity

• Validate message queueing, offline buffering, reconnect logic, and retry behavior under real-world network conditions

Industrial Protocol Testing:

• Develop and execute test cases for:
  • Modbus Serial (RTU): timing behavior, register maps, function codes, exception handling.
  • Modbus TCP: multi-client scenarios, socket recovery, error handling.
  • CAN bus: arbitration, extended/standard IDs, error frames, bus overload, and edge-case behavior.
• Uses protocol analyzers, CAN interfaces, Modbus simulators, and logic analyzers to capture and analyze traffic.

Firmware Update & OTA Lifecycle Validation:

• Test firmware and system updates using hawkBit (deployment orchestration) and SWUpdate (A/B updates, failover, signing, rollback)
• Validate update workflows under stress, including:
  • Interrupted updates (power loss, network drop)
  • Corrupted image scenarios
  • Update rollback and fallback behavior
• Ensure secure update chain-of-trust, signature verification, and partition layout integrity.

Automation & CI/CD Integration:

• Develop automated test suites using Python or C++ to validate firmware, protocols, OTA processes, and system services.
• Build hardware-in-the-loop (HIL) automated test setups for regression, protocol simulation, and device behavior testing.
• Integrate automated tests into CI/CD pipelines (GitHub Actions, GitLab, Azure DevOps, Jenkins).
• Maintain automation tools for serial logging, bus capture, cloud message verification, and gateway diagnostics.

Debugging & Quality Reporting:

• Investigate firmware and system issues via logs, traces, core dumps, serial output, and protocol captures.
• Reproduce field issues in controlled environments and collaborate with engineering teams to diagnose root causes.
• Generate test reports, defect metrics, and release readiness assessments.
• Contribute to continuous improvement of testing tools, processes, and standards.

Minimum Job Requirements

Education

• Bachelor of Computer Science or Engineering or equivalent years of experience.

Certification / License

Work Experience

• 3 years of experience in embedded system testing, QA engineering, or IoT device validation.
• Experience testing embedded Linux or RTOS-based gateways.
• Hands-on experience with Azure IoT Hub (telemetry, C2D, twins, DPS), hawkBit and SWUpdate, Modbus Serial (RTU) and Modbus TCP, and CAN bus testing and analysis

Knowledge / Skills / Abilities

• Strong understanding of C++ firmware behavior (reading & analyzing code, debugging tests).
• Strong Python scripting capability for automation and test tool development.
• Proficiency with lab equipment (CAN analyzers, Modbus simulators, USB-to-serial tools, oscilloscopes).
• Solid networking knowledge (TCP/IP, TLS, certificates, provisioning flows).

Preferred Job Requirements

Education

Certification / License

Work Experience

•  Experience with IoT cloud platforms, fleet management, or gateway deployments
• Experience with MQTT, AMQP, REST APIs, or proprietary field protocols
• Experience building HIL / automated protocol simulation frameworks (pytest, Robot Framework, custom rigs).

Knowledge / Skills / Abilities          

• Familiarity with secure boot, signed firmware images, and SBOM/security compliance.
• Knowledge of Yocto, Buildroot, systemd, and Linux internals.
• Familiarity with J1939, CANOpen, or other industrial stacks.
• Exposure to DevOps practices for firmware CI pipelines.
• Knowledge of SQL server and general database management concepts

“We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, national origin, disability status, protected veteran status, or any other characteristic protected by law.”