The BESS Site & Service Engineer is responsible for the technical execution and on-site coordination of BESS projects throughout their lifecycle, from installation and commissioning to handover, operation and long-term service. The role acts as a technical interface between LONGi, customers, EPC contractors, Project Management, Engineering, service partners and suppliers, providing both on-site and remote technical support.
Travel requirement: Frequent travel and regular on-site presence
Reports to: Head of EU BESS Delivery and service director
Main Job Responsibilities
- Site Technical Coordination: Act as LONGi technical representative on site, supporting and coordinating activities with customers, EPC contractors, subcontractors and Project Management.
- Installation Supervision: Verify mechanical, electrical, auxiliary and communication-system installation according to approved drawings, technical documentation and procedures; identify and follow up deviations and open points.
- Commissioning: Prepare, coordinate and execute commissioning activities for battery systems, BMS, PCS, EMS, auxiliary systems, communication networks and MV interfaces.
- System & Plant Integration: Support integration between BESS equipment, SCADA, EMS, PPC/PPM and plant control systems, including verification of signals, setpoints, measurements and commands.
- Performance Testing: Perform and support capacity tests, Round Trip Efficiency (RTE) tests, functional tests, SAT and other contractual performance verification activities.
- Technical Handover: Support commissioning close-out, SAT completion and technical handover of the system to the customer and O&M organization.
- Remote & Field Technical Support: Analyse alarms, logs and operating data; perform diagnostics, troubleshooting and root-cause analysis; coordinate escalation with Engineering, Product teams, OEMs and suppliers.
- Maintenance & LTSA Support: Perform or coordinate preventive and corrective maintenance, inspections, repairs, component replacement, upgrades and LTSA technical activities, directly with customers or through authorized service partners.
- Customer & Service Partner Coordination: Supervise technical activities performed by service partners and subcontractors, participate in project/commissioning/service meetings, provide technical status updates and manage assigned technical actions.
- Training, Documentation & On-Call Support: Provide technical training, prepare relevant commissioning/service/maintenance documentation, and participate in the applicable on-call rotation for urgent remote or on-site support.
- HSE & Site Compliance: Perform all activities in accordance with applicable HSE regulations, site rules and LONGi procedures. Ensure that activities under technical supervision are performed according to approved work instructions and safety procedures.Provide technical input to risk assessments, method statements and work instructions where required.Report unsafe conditions, technical risks or non-compliant activities through the applicable escalation process.
Key Interfaces
Qualifications
- Technical diploma or degree in Electrical Engineering, Electronics, Automation, Energy Systems or related field.
- Experience in BESS, renewable energy, power conversion, commissioning, field service or industrial electrical systems.
- Knowledge of BMS, PCS, EMS, SCADA, PPC/PPM, LV/MV systems and industrial communication networks.
- Strong troubleshooting, problem-solving, customer-facing and stakeholder-coordination skills; ability to work independently on site.
- Required certifications and qualifications to perform electrical and site activities in the relevant countries.
- Availability for frequent travel and regular on-site activities across Europe.
- Availability to participate in service on-call rotations where required.