Technical Support Engineer (BESS)

BYD Lithium Battery Co., Ltd.; Dortmund; On-site; EUR 70,000 - 110,000; Full time

Benefits offered by this job

Competitive salary package

Professional HV training

Job summary

BYD Lithium Battery Co., Ltd. seeks an after-sales technical specialist to support commissioning and operation of utility-scale BESS in Dortmund. You will maintain key account relationships and resolve complex system issues.

The role requires 2+ years in BESS, an Electrical Engineering degree, and knowledge of PCS/BMS/EMS, with travel across Germany and a Class B license. DGUV 2 is a strong plus.

Qualifications

• Industry experience: 2+ years in utility-scale BESS.
• Bachelor or Master in Electrical Engineering or related field.
• Knowledge of large-capacity PCS, BMS, and EMS.
• Familiar with safety regulations for large energy storage installations.
• Willingness to travel within Germany for work assignments.
• Class B driving license mandatory.
• DGUV Stufe 2 qualification is a strong plus.

Responsibilities

• After-sales technical support for commissioning and operation of BESS.
• Maintain relationships with utility companies, IPPs and EPCs.
• Analyze and resolve quality problems in containerized storage solutions.
• Provide training on high-voltage system operation and EMS usage.
• Collect field data to inform R&D on system integration and energy management.
• Coordinate spare parts logistics and on-site repairs.

Skills

English fluency

German bonus

Education

Electrical Engineering degree

Tools

BMS

EMS

PCS

Job description

Job Responsibilities

• After-sales Technical Support: In line with the company's overall strategy, resolve various technical issues that arise during the commissioning and operation of Utility-scale Battery Energy Storage Systems (BESS) in Magdeburg, ensuring the high availability and stability of the systems.
• Customer Relationship Maintenance: Maintain professional communication with utility companies, IPPs, and EPC contractors. Promptly understand their technical requirements, handle performance-related feedback (e.g., Round-Trip Efficiency, system health), and improve key account satisfaction.
• Product Problem Solving: Assist the local after-sales team in analyzing and resolving complex quality problems in containerized energy storage solutions, including battery strings, liquid cooling units, and fire suppression systems. Formulate effective solutions and track the progress.
• Technical Training and Guidance: Provide local clients and O&M (Operation & Maintenance) teams with technical training on high-voltage system operation, EMS usage, and emergency response protocols.
• Feedback and Suggestions: Collect field data on BESS performance and grid interaction to provide valuable insights for the company's R&D regarding system integration and energy management strategies.
• Spare Parts Management: Coordinate with the warehouse for the logistics of large-scale components (e.g., power conversion modules, battery clusters) and manage the repair or replacement of damaged units on-site.

Job location

Dortmund, North Rhine-Westphalia, Germany

Job Requirements

• Industry Experience: Have more than 2 years of relevant work experience in the Utility-scale BESS.
• Professional Background: Bachelor or Master, majors in Electrical Engineering, Power Systems, or Renewable Energy are preferred.
• Technical Knowledge: Be familiar with large-capacity PCS (Power Conversion Systems), BMS, EMS. Have basic knowledge of medium-to-high voltage power distribution and the ability to independently troubleshoot system-level failures.
• Regulatory Understanding: Be familiar with safety regulations for large energy storage installations.
• Willingness to Travel: Be willing to travel within Germany according to work needs and accept occasional business trips to other countries around Germany.
• License: Class B Driving License (Mandatory).
• Language: Fluent in English, German is bonus.
• Certification: DGUV Stufe 2 qualification (Qualified Electrician for High-Voltage Systems in Professional Environments) is a strong plus.

What We Offer

• Competitive salary package.
• Professional training for high-voltage electrician operations and grid-standard procedures.