Andrew Liu

I am an after-sales and field service engineer with strong expertise in 1.mobile telecommunications network deployment and maintenance, 2.photovoltaic inverters and energy storage battery systems, and 3.building system integration, including video surveillance and WLAN solutions. I have worked as an after-sales engineer for companies such as ZTE, CATL, and Sungrow. Over the past 10 years, I have traveled to more than 20 countries across Asia, Europe, and North America, supporting telecom operators, energy storage power stations, and vehicle battery service centers by resolving complex equipment and system issues on site. I hold a Chinese electronics engineer certification, electrician certifications from both China and Germany, and an overseas advanced certification issued by CATL, covering energy storage systems and commercial vehicle battery maintenance. In addition, I possess an internationally recognized aerial work platform (AWP) operator license and a safety certification from EMSS (UK). I have also obtained the IHK admission qualification for electrical crafts and am preparing to pursue the Meister training program. I have completed a B2-level professional German course and am currently seeking after-sales or field service opportunities in the Cologne–Düsseldorf area, or roles that offer remote work combined with travel.