Bess Delivery & Service Engineer – Utility Scale Projects - Donostia San Sebastián

Longi Solar; País Vasco; Presencial; EUR 55.000 - 75.000; Jornada completa

Descripción de la vacante

Longi Solar is seeking a BESS Delivery & Service Engineer (Utility Scale) to lead technical delivery, commissioning, and ongoing service for utility-scale battery energy storage projects. You will coordinate with EPCs, grid operators, and stakeholders to ensure design alignment, safety, and schedule adherence.

You will manage handover from sales, develop commissioning plans, perform tests on BMS, PCS, EMS, and MV transformers, and support operations with preventive maintenance and RAMS

Formación

• Degree in Electrical Engineering, Power Systems, Energy Engineering, or related field.
• 2–5 years’ experience in utility-scale renewable energy or power infrastructure.
• Certifications to work on site.
• Experience with large-scale BESS, solar + storage, or grid infrastructure preferred.
• Strong understanding of grid integration and HSE standards.

Responsabilidades

• Handover BESS projects from sales and presales after contract signing.
• Review proposals, configurations, and service scope.
• Plan and execute commissioning for BESS projects.
• Coordinate with EPC contractors and suppliers.
• Perform O&M support and preventive maintenance.
• Ensure safety and regulatory compliance.
• Handover to operations after commissioning.

Conocimientos

BESS knowledge

LV systems

Inverters

EMS

Grid integration

Stakeholder management

Travel willingness

Educación

Electrical Engineering / Power Systems

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
• Strong problem-solving ability
• Willingness to travel to project sites