ESS Delivery Engineer

CATL; Riyadh; On-site; SAR 180,000 - 300,000; Full time

Job summary

CATL is seeking a commissioning specialist to support large-scale Battery Energy Storage System projects. The role involves hands-on commissioning, troubleshooting, and defect resolution for battery containers and associated systems, with a focus on safety, quality, and timely delivery.

You will collaborate with cross-functional teams, participate in SAT and grid tests, and assist in training customers on operation and maintenance.

Qualifications

• Bachelor’s degree or above in Electrical/related engineering or a related discipline.

Responsibilities

• Participate in commissioning, project delivery, and acceptance of large-scale BESS projects.
• Perform commissioning, troubleshooting, and defect resolution for battery containers/cabinets (FSS, HVAC/TMS, DC up to 1500V, AC 220/400V, BMS)
• Assist with commissioning of PCS and EMS; understand operating principles.
• Support on-site issue analysis, fault diagnosis, corrective actions, and issue closure with project team.
• Participate in SAT, grid connection testing, and project acceptance activities.
• Support customer training on system operation, maintenance, and product usage.
• Track commissioning issues through to closure and ensure timely project delivery.
• Collaborate with R&D, Quality, After-Sales, PM to resolve site issues efficiently.
• Comply with EHS requirements and ensure safe execution of all commissioning activities.

Skills

Analytical skills

Communication skills

Teamwork

English fluency

Mandarin Chinese proficiency

Education

Bachelor’s degree or above

Electrical/related engineering major

Tools

CAN

Modbus RTU/TCP

BMS/EMS/PCS knowledge

Microsoft Office

Job description

• Participate in the commissioning, project delivery, and acceptance of large-scale Battery Energy Storage System (BESS) projects.
• Perform commissioning, troubleshooting, and defect resolution for battery containers/cabinets, including:

Fire Suppression System (FSS),Liquid Cooling System (HVAC/TMS),DC Circuits (up to 1500V DC),Auxiliary AC Circuits (220V/400V AC),BMS Communication Systems

• Assist with the commissioning of PCS (Power Conversion System) and EMS (Energy Management System), with a basic understanding of their operating principles.
• Support on-site issue analysis, fault diagnosis, corrective actions, and issue closure together with the project team.
• Participate in Site Acceptance Testing (SAT), grid connection testing, and project acceptance activities.
• Support customer training on system operation, maintenance, and product usage.
• Track commissioning issues through to closure and ensure projects are delivered according to schedule.
• Collaborate with cross-functional teams (R&D, Quality, After-Sales Service, Project Management, etc.) to resolve site issues efficiently.
• Comply with EHS (Environment, Health & Safety) requirements and ensure safe execution of all commissioning activities.

Qualifications

• Bachelor's degree or above.
• Preferred majors include Electrical Engineering, Communication Engineering, Energy Engineering, Renewable Energy Technology, or related disciplines.
• More than 5 years of experience in electrical equipment commissioning, energy projects, or related industries.
• Familiarity with one or more of the following areas:Basic knowledge of primary and secondary electrical systems;

Energy storage systems, photovoltaic (PV) systems, and power systems;Basic principles of BMS, PCS, and EMS;

Industrial communication protocols such as CAN and Modbus RTU/TCP;Communication networks and fieldbus technologies.

• Ability to read and understand electrical schematics, wiring diagrams, and communication topology drawings.
• Knowledge of BESS grid-connection processes, substation equipment, and power plant delivery procedures is preferred.
• Proficient in Microsoft Office and other standard office software.
• Strong analytical, communication, coordination, and teamwork skills.
• Fluent in English for daily work and on-site communication; Mandarin Chinese proficiency is required.
• Willingness to travel extensively and undertake long-term assignments at project sites overseas

Preferred Qualifications

• Experience in Battery Energy Storage Systems (BESS), photovoltaic (PV), or wind power projects.
• Low-voltage and/or high-voltage electrical certification, or equivalent electrical qualifications.
• Experience working on international projects or in a multicultural environment.
• Proficiency in English, Chinese is a plus.