Product Testing Engineer

Role: Product Testing Engineer
Location: Portugal, Porto
Type of contract: Permanent, full-time
Carrier is the leading worldwide provider of heating, ventilation, and air conditioning (HVAC), refrigeration, fire, security, and cold chain solutions. We invented the modern air conditioning, and our team of pioneers and innovators have a long history of developing new technologies.
Addvolt, now part of Carrier, global leader in intelligent climate and energy solutions, delivers advanced electrification technology, integrated power management and power electronics capabilities for transport refrigeration and auxiliary systems. Driving innovation in the electrification and decarbonization of onboard systems for refrigerated trailers, trucks, vans and containers, Addvolt empowers fleets to avoid fuel usage, reduce major emissions and operate efficiently at a remarkably low noise level. By combining Addvolt’s innovative power solutions with Carrier Transicold’s expertise in transport refrigeration, we are enhancing the value we deliver to fleets, original equipment manufacturers and logistics operators worldwide. Together with Carrier, we are accelerating the transition to a more sustainable, efficient and intelligent cold chain.
Purpose of the Role
The Product Testing Engineer plays a crucial role in ensuring product quality, functionality, and reliability before any project, feature, or firmware release reaches serial production.
This role exists to:
Validate and test projects, firmware releases, and new product features
Ensure test coverage meets the full project scope
Identify, document, and report edge cases and unexpected behaviors
Improve overall product quality before customer delivery
Develop and maintain advanced validation setups that support both the Product Testing team and other engineering teams
Accelerate testing processes while ensuring accuracy and realism by emulating real‑world product usage
The ultimate mission is to enhance product robustness, reduce failures in the field, and support continuous improvement across the engineering organization.
Key Responsibilities
Execute comprehensive validation and characterization tests for products, projects, firmware releases, and new features
Ensure all project releases meet high quality standards and follow validation criteria
Improve existing tests and create new test procedures to increase efficiency and depth
Design and implement validation setups and testing equipment to support automated and manual testing
Automate repetitive testing tasks to increase speed, consistency, and accuracy
Collaborate with development and production engineering teams to ensure testing alignment and address discovered issues
Characterize product performance, analyze test results, and report findings clearly
Support validation at the production line when required (automation, test fixtures, data analysis, etc.)
Document test results, defects, edge cases, and improvement opportunities
Contribute to continuous improvement of processes, tooling, and testing methodologies
Required Skills & Qualifications
Bachelor’s degree in Electrical Engineering or a closely related field
Strong understanding of electronics, circuits, debugging, and measurement tools (oscilloscope, multimeter, power analyzers, etc.)
Ability to design and execute tests with high rigor and attention to detail
Analytical mindset with strong problem solving capabilities
Good understanding of firmware behavior, embedded systems, and failure modes
Ability to work both independently and collaboratively within engineering teams
Good documentation and communication skills
Focus on quality, reliability, and continuous improvement
Nice to Have Skills
(Not mandatory but highly beneficial)
PCB design experience (Altium, KiCad, or similar)
Experience with automated test setups, scripting, or test automation frameworks
Knowledge of microcontrollers, communication protocols (UART, I²C, SPI, CAN, BLE, etc.)
Experience with product validation methodologies (DFT, DFMEA, reliability testing, HALT/HASS)
Familiarity with production testing or industrial test equipment
Experience with data analysis (Python, MATLAB, or similar tools)
Pay Range
€22,000.00-€44,000.00