The BESS Delivery & Service Engineer (Utility Scale) is responsible for the execution and lifecycle support of large-scale battery energy storage projects after the project is secured by the sales and presales teams.

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The role manages the technical delivery, commissioning, and operational & maintenance support of utility-scale BESS projects, working closely with EPC contractors, grid operators, and project stakeholders.

Key Responsibilities
1. Project Handover from Sales / Presales

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- Take over BESS projects from the sales and presales teams after contract signing.

- Review technical proposals, system configurations, and service scope.

- Confirm system design and project requirements with internal teams and customers including: System design, Grid requirements, Performance guarantees, Project schedules，etc

- Ensure project milestones are achieved according to schedule and budget.

2. Project Commissioning Planning and Execution

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- Manage the full lifecycle delivery of utility-scale BESS projects .

- Coordinate with EPC contractors, integrators, and equipment suppliers. Guide EPC for the equipment unloading, installation etc.

- Ensure compliance with technical specifications, grid requirements, and safety standards.

- Develop and execute commissioning plans, procedures, and checklists for BESS projects.

- Conduct commissioning for battery racks, BMS (Battery Management System), PCS (Power Conversion System), EMS (Energy Management System) and MV transformer.

- Validate integration of electrical, control, and communication systems.

- Conduct grid compliance and performance verification tests





- Work with grid operators and technical partners to complete system integration and SAT.

- Work with technical support teams to resolve technical issues during commissioning.

- Ensure successful handover to operations.

4. Operations & Maintenance Service Management

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- Carry out preventive and corrective maintenance on BESS/PCS/EMS

- Perform remote operations to support maintenance and fault resolution

- Conduct site inspections, diagnostics, and testing using specialist equipment

- Ensure strict compliance with Health & Safety standards and HSE regulations in related countries

- Supervise subcontractors and ensure quality and compliance of third-party works

- Support commissioning, upgrades, and major repairs

- Review technical documentation and contribute to maintenance procedures, RAMS, and method statements

- Liaise with OEMs and suppliers on maintenance processes and technical clarifications

- Support annual maintenance planning for BESS assets

- Provide O&M; Training to customer O&M; team and subcontractor

Qualifications

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- Degree in Electrical Engineering, Power Systems, Energy Engineering , or related field.

- 2-5 years' experience in utility-scale renewable energy or power infrastructure projects. xhfqzwm

- Necessary Certifications to work on site

- Experience with large-scale BESS, solar + storage, or grid infrastructure preferred.

- Strong understanding of Grid integration, Power systems, Energy management systems, High-voltage systems, HSE

Skills

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- Strong technical knowledge of BESS, LV systems, inverters, EMS

- Knowledge of grid compliance and power system integration

- Ability to manage multiple technical stakeholders

- Strong problem-solving ability

- Willingness to travel to project sites

BESS Delivery & Service Engineer - Utility Scale Projects - LONGi Solar tarragona, catalunya, es

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📌 Bess Delivery & Service Engineer – Utility Scale Projects - Longi Solar (Tarragona)
🏢 Longi Solar
📍 Tarragona