Technical Support Engineer

WHES is seeking a Technical Support Engineer to join our team and play a critical role in the installation, commissioning, and technical support of Battery Energy Storage Systems (BESS). This hybrid role requires hands‑on expertise in deploying energy storage solutions across various applications, as well as strong problem‑solving skills and responsiveness to customer inquiries and demands.

• Provide commissioning support to ensure smooth system start‑up and performance.
• Installation and commissioning training development and delivery.
• Coordination of service process (Field Service & Troubleshooting Support and Spare Parts Management).
• Travel to customer and project sites as required to perform and support BESS commissioning, system troubleshooting, fault diagnosis, maintenance, and after‑sales service activities.
• Responsible for development and delivery of technical solutions & support activities on time for related market.
• Manage customer platform, data and access to enable visibility and coordination.
• Supervise on‑going projects. Proactively communicate with related departments about the progress.
• Follow up on the testing results, analyze and summarize data, and provide analytical report in high quality.
• Be creative in finding solutions based on specific customer goals, requirements, equipment, and processing.
• Design and conduct trials both in our internal lab or at customers/partners sites to help optimize installation process.
• Establish good communication with customers, understanding their needs and requirements in order to provide appropriate quality and service.
• Translate customer questions & requirements into product specifications and recommend existing products in order to solve any problem they may have.
• Prepare presentations and technical documentation for internal and external customers.
• Support marketing department to initiate market promotion activities, including technical seminars, tradeshows and other daily work.
• Accurately and timely report the results and progress on present tasks according to company's procedures and standards.

• Opportunity to work in the rapidly growing Battery Energy Storage System (BESS) and renewable energy industry.
• Hands‑on experience with advanced BESS, PCS/inverter, BMS, EMS, and energy management technologies.
• Exposure to a wide range of projects and applications, including on‑grid, off‑grid, hybrid, peak shaving, self‑consumption, and TOU optimization.
• Continuous technical training and professional development, with opportunities to deepen expertise in commissioning, troubleshooting, system integration, and energy management.
• Opportunity to work closely with international engineering, R&D, product, and after‑sales teams.
• Direct involvement in real customer projects, from commissioning and system optimization to troubleshooting and after‑sales support.
• Clear opportunities for career growth and increased technical responsibility as the European business and after‑sales organization expands.
• International working environment with opportunities for on‑site project experience and business travel.
• Opportunity to contribute to the development and improvement of European technical support and after‑sales processes.
• You will become an expert in one of the technologies shaping the future of energy. At WHES, you will learn directly from experienced energy professionals with over a decade of market expertise, gaining the technical knowledge, business skills and mentorship needed to accelerate your professional and personal growth. You will feel you make a real impact in the real world with your passion and competences.

• Bachelor’s degree or above in Electrical Engineering, Electrical Power Engineering, Electrochemistry, Energy Engineering, or a related technical field. Relevant professional experience in the energy storage, renewable energy, or power electronics industry is required.
• Experience in energy storage related industries is preferred;
• Good communication skills, and leadership skills are needed;
• Proficiency in Office software. Independent writing ability with solid writing skills. High level of presentation.
• Technical knowledge of industrial communication protocols and interfaces, including CAN, RS485, and Ethernet.
• Understanding of BESS operating strategies and use cases, including peak shaving, self‑consumption, Time‑of‑Use (TOU) optimization, demand management, and grid import/export control;
• Experience with hybrid, on‑grid, and off‑grid inverter systems, including configuration, commissioning, operation, and troubleshooting;
• Understanding of BESS system architecture and the interaction between BMS, PCS/inverters, EMS/site con