Position Overview 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

- Project Handover from Sales / Presales

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.

- Project Commissioning Planning and Execution

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.

- Commissioning & Grid Integration

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.

- Operations & Maintenance Service Management

Provide O&M; service after Commercial Operation Date (COD).

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

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

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

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

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 (Foz)
🏢 Longi Solar
📍 Foz