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Technical Service Engineer BESS - Romania (d/f/m)

Remote
Full-time
Permanent employee

Your mission

Position, Location, Department
Full-time | Romania | Technical Europe

Position Summary
The Technical Service Engineer BESS is responsible for the on-site installation support, commissioning, grid connection, and after-sales technical service of Battery Energy Storage System (BESS) projects across Eastern Europe. The role acts as a supporting on-site technical representative, working under the guidance the Team Lead Service Delivery BESS, ensuring safe, timely, and high-quality project delivery from installation through commissioning, acceptance, and post-installation support.

Reporting Line
Reports to: Team Lead Service Delivery BESS

Major Responsibilities
Site Delivery & Commissioning
  • Provide on-site technical support during installation, commissioning, testing, and handover of Battery Energy Storage System (BESS) projects.  
  • Support senior engineers in supervising installation activities and verifying compliance with technical specifications, quality standards, and safety requirements.
  • Participate in system commissioning, functional testing, and grid connection activities under appropriate technical guidance.
  • Resolve on-site technical issues related to electrical installation and system integration, escalating complex issues where required.
  • Support project acceptance, punch-list resolution, and final technical handover to customers. 
After-Sales Technical Support
  • Respond promptly to customer technical enquiries via remote or on-site support and ensure timely issue resolution.  
  • Troubleshoot hardware, software, communication, and system performance issues, with support from senior technical specialists where required.
  • Manage after-sales service activities through the service management system, ensuring accurate documentation and timely closure of work orders.  
  • Coordinate with engineering, product, and technical support teams to resolve technical issues efficiently.  
  • Coordinate with Sales teams to ensure effective customer communication and high customer satisfaction.
Customer Support & Training
  • Support the delivery of customer training on system operation, routine maintenance, and safety procedures.
  • Handle customer complaints professionally and escalate complex technical issues through the appropriate support channels.
Continuous Improvement
  • Collect and communicate customer feedback, technical issues, and field observations to support product improvements.  
  • Maintain technical knowledge of BESS products, system architecture, and commissioning procedures through ongoing training and certification programs.
  • Support spare parts inventory management and ensure service tools are properly maintained.
Performance Indicators  
  • Response time to customer service requests 
  • Mean Time to Repair (MTTR) 
  • First-time fix / first-visit resolution rate 
  • On-time commissioning and project handover 
  • Technical quality of commissioning and documentation 
  • Customer satisfaction with field service support 
  • Compliance with EHS and site safety requirements 
  • Accuracy and timeliness of service documentation

Your profile

Required Qualifications  
  • Bachelor's degree or technical qualification in Electrical Engineering, Power Engineering, Renewable Energy, Electronics, Mechatronics, or related technical discipline
  • Typically, 2-4 years of experience in field service, commissioning, site engineering, maintenance, or technical support within power systems, inverters, power electronics, electrical infrastructure, MV/HV installations, renewable energy, or a related technical industry
  • Good understanding of electrical systems, inverters, power electronics, MV/HV equipment, power conversion equipment, or Battery Energy Storage Systems (BESS). Previous BESS experience is advantageous but not required
  • Experience supporting electrical installation, maintenance, commissioning, or troubleshooting activities
  • Ability to interpret electrical drawings, wiring diagrams, and single-line schematics
  • Basic knowledge of electrical safety standards and grid-connected electrical systems is preferred
  • Relevant local language: C1 (professional working proficiency); English: C1 (professional working proficiency)
  • Valid driver's license
Skills & Competencies  
  • Strong technical troubleshooting and diagnostic skills  
  • Practical understanding of electrical systems, electrical testing, troubleshooting, and commissioning fundamentals
  • Structured, detail-oriented, and safety-focused working style  
  • Strong customer service and communication skills  
  • Ability to work independently while effectively seeking guidance and technical support when required
  • Strong problem-solving and decision-making capability  
  • Cross-functional collaboration and stakeholder management skills  
  • High level of adaptability and willingness to travel extensively 
Travel Requirement  
  • Very frequent travel across Eastern Europe (estimated ≥50% of working time).
  • Extended periods at customer sites are expected.

About us

JA Solar was founded in 2005. As a photovoltaic power generation solution platform we continue to advance the "One Body, Two Wings" strategy. The "One Body" refers to our main industry chain integrating silicon wafers, cells, and modules, while the "Two Wings" refer to our PV auxiliary materials and equipment industry and PV+ application scenario solutions. In 2019, JA Solar was officially listed on the A-share market (stock symbol: "JA Solar"; stock code: 002459). With continuous technological innovation, stable financial strengths, and a well-developed global sales and service network, JA Solar has been widely recognized by domestic and international customers and has been listed in the "Fortune 500 China 500" and "Global Top 500 New Energy Enterprises" for multiple consecutive years.