BESS Senior Field Service Engineer

LG Energy Solution Michigan, Inc.•Westborough, MA

7d•Onsite

About The Position

The BESS Senior Field Service Engineer (Sr. FSE) is responsible for providing expert field service on Battery Energy Storage Systems (BESS) and ancillary equipment from commissioning completion / installation through warranty and long‑term service support. This role interfaces with third‑party suppliers of major components (including inverters/PCS, transformers, HVAC) and operates as a technical lead supporting customers, subcontractors/authorized service providers, and internal field teams. This role provides a pathway to advanced technical, site leadership, or service operations roles within the organization.

Requirements

Strong knowledge of electrical testing and measurement equipment.
Mechanical and electrical troubleshooting skills; ability to read and interpret schematics/drawings relative to physical systems.
Expertise troubleshooting hardware and software compatibility issues.
Expert ability to interface with customers and cross-functional internal teams; excellent written and verbal communication skills.
Working knowledge of TCP/IP networking (routing and communications protocols) and experience with computer network operating systems.
Engineering experience with energy storage and power conversion systems.
Support advanced diagnostics involving PCS, EMS, and system communications, including alarm/event analysis and firmware interactions.
Proficiency with Microsoft Office tools (Excel, PowerPoint, Word).
B.S. in Electrical/Mechanical Engineering or equivalent technical experience.
5+ years of relevant experience in Electrical/Power/Energy EPC or O&M sectors.
Willingness to travel up to 50%.
Flexibility with working off-hours and being part of the off-hours, on-call rotation.
Ability to lift and carry material is required.
Must have a valid driver’s license and passport and be willing /able to drive and fly to remote sites as needed.

Nice To Haves

Working knowledge of communications protocols such as CAN, Modbus, TC/IP, DNP3.
Familiarity with complex controls systems, Real-Time Operating Systems.
Knowledge or understanding of generation, transmission and distribution in electric grid systems.
Experience with CMMS platforms (e.g., SAP, Maximo, ServiceNow, Salesforce) preferred.
Structured problem-solving experience or Lean background.
Understanding of computer networks communication.

Responsibilities

Own availability and service‑level commitments (SLAs) for assigned sites during service activities, ensuring safe execution, timely restoration, accurate communication, and proper documentation to support contractual performance.
Establish, promote, and maintain strong customer service relationships with internal and external stakeholders.
Safely operate, plan, and perform preventive and corrective maintenance, including troubleshooting, and repairs.
Support software/firmware upgrades and related service activities.
Maintain accurate site records of work performed and site issues; ensure documentation quality in service tools/work orders.
Support service readiness activities tied to transition into long-term O&M (tools/spares/access readiness, onboarding support, and cross-functional coordination as applicable).
Communicate effectively, collaborate, and provide live remote technical support and/or training to team members, partners (ASPs), customers using virtual tools (e.g., phone/Teams/WebEx or similar).
Educate customers and contractors on basic equipment operation, response, and maintenance.
Provide after-hours on-call support on a rotation basis.
Contribute to product support procedures, training, troubleshooting guides, and other service documentation.
Support the product return and technical support process as needed.
Utilize CMMS and digital service platforms (i.e. SoftWrench, SAP, Salesforce) to document work orders, track issues, support data‑driven service execution, and root‑cause identification and long‑term corrective actions.
Lead and model safe work practices, including LOTO, energized work controls, job hazard analysis (JHA) and job safety analysis (JSA).
Ensure compliance with applicable safety standards (e.g., NFPA 70E, OSHA) during field execution and subcontractor activities.
Actively identify and report near‑misses, hazards, and improvement opportunities.
This role is expected to independently lead complex troubleshooting efforts and act as a senior technical escalation point for complex site and fleet‑level issues, supporting root‑cause identification and long‑term corrective actions.
Lead service partners and subcontractors on complex work scopes, setting expectations for safety, quality, and technical execution.
Mentor and develop Field Service Engineers and Technicians and Engineers through on-the-job coaching, troubleshooting guidance, and reinforcing strong documentation practices
Elevate service repeatability by strengthening procedures, troubleshooting guides, and training content based on field lessons learned.
Provide higher-level remote support and customer enablement, including technical guidance and training using virtual tools during live troubleshooting events.
Raise the bar for service reporting by ensuring site records clearly capture symptoms, actions taken, parts/changes applied, and outcomes.
Support service readiness and cross-functional handoffs where needed (e.g., early-life stabilization, readiness items, and operational support during transition into O&M).