BESS Delivery & Service Engineer – Utility Scale Projects

LONGi Solar; España; Presencial; EUR 60.000 - 90.000; Jornada completa

Descripción de la vacante

LONGi Solar is seeking a BESS Delivery & Service Engineer (Utility Scale) to drive the execution and lifecycle support of large-scale battery energy storage projects after sales closure. You will manage technical delivery, commissioning, and O&M support, in collaboration with EPCs, grid operators, and project stakeholders.

Responsibilities include project handover, commissioning planning, and overseeing all maintenance activities to ensure safe, compliant operations and successful handover to

Formación

• Strong technical knowledge of BESS, LV systems, inverters, EMS.
• Knowledge of grid compliance and power system integration.
• Ability to manage multiple technical stakeholders.

Responsabilidades

• Lead project handover from sales/presales and confirm system design and requirements.
• Plan and execute commissioning and full lifecycle delivery of utility-scale BESS projects.
• Coordinate with EPCs, integrators, and suppliers; ensure safety and grid compliance.
• Manage preventive and corrective maintenance; provide remote and on-site support.
• Liaise with OEMs and customers; ensure successful handover to operations.

Conocimientos

BESS, LV systems, inverters, EMS

Grid compliance & power system

Stakeholder management

Educación

Electrical Engineering / Power Systems / Energy Engineering

Site certifications

Descripción del empleo

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.

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

• 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

• 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

• 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.
• 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