Test Engineer (IoT)

Company Description

We are seeking a Test Engineer to join our big team and be a primary point of contact with the Customer on quality assurance matters. As a member of our team, you will have the opportunity to work with various products that share common functionalities. You will also develop a cohesive testing strategy that meets Customer needs and ensures high-quality results by collaborating closely with the team.

You will have a chance to challenge yourself, grow as a technologist and a professional, and make an incredible impact on the Customer's products.  

CUSTOMER
Our Customer is a leading European supplier of eco-friendly, energy-efficient indoor climate solutions. They aim to provide modern climate control in all types of buildings by using renewable energy sources and the latest technology.

PROJECT
Our project involves the development of smart home climate solutions for a client operating in the heating, ventilation, and air conditioning (HVAC) sector. Together with the client, we provide smart climate solutions featuring wireless connectivity and intelligent control for any type of property, including apartment blocks, industrial buildings, hotels, or country houses, to help reduce energy consumption for our client’s customers and society at large.  
 
The team is responsible for developing and maintaining universal electronics and firmware platforms.  

The mission of the project is to deliver scalable, reliable, and secure solutions that accelerate time-to-market for new products while supporting the company’s global vision of transitioning to energy-efficient and sustainable technologies.

Job Description

• Perform functional, integration, and regression testing of embedded software 
• Create and maintain test documentation (checklists, test cases, and bug reports) 
• Participate in release planning and synchronization meetings with the development team 
• Collaborate closely with developers, architects, and other QA engineers 
• Identify, log, and track defects until resolution 
• Contribute to the overall product and process quality according to company standards 

Qualifications

• 2+ years of experience as a Manual QA Engineer in embedded or firmware projects 
• Solid knowledge of testing methodologies and ability to write test cases and reports 
• Experience with bug tracking and test management systems 
• Basic hardware skills (flashing, setup, and diagnostics) 
• Experience with Unix platforms 
• Experience in network (understanding of TCP/UDP) 
• Experience with sniffers and debugging tools (ex. Charles, Wireshark)
• Knowledge or experience with Modbus RTU/TCP/IP (protocol understanding, device testing, communication checks)
• Knowledge or experience with EEBUS (energy management communication standard, interoperability testing, smart grid communication)
• Hands-on electronics experience, including:
• Knowledge or experience with Zigbee:
• Embedded Linux testing: CLI skills, log analysis (dmesg, journalctl, systemctl), networking (ping, tcpdump, Wireshark)
• Firmware debugging: bootloader (U-Boot), flashing, boot log analysis
• Experience in API testing (Postman, Bruno) 
• Upper-Intermediate level of English 
• flashing and debugging hardware
• soldering PCBs and performing small-scale repairs
• protocol layers (APS, NWK, MAC), roles (coordinator, router, end device)
• network setup, pairing/unpairing, stability testing
• analysis with Zigbee sniffers (Wireshark)
• testing scenarios: OTA updates, connection recovery, stress testing with multiple devices