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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
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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.
