Field Application Engineer – Battery Energy Storage Systems

SES•Boston, MA

8d•Onsite

About The Position

SES AI Corp. is seeking a Field Application Engineer (FAE) to lead field deployment, technical support, and after-sales service for advanced battery and energy-storage systems. The successful candidate will support customers through onsite service, phone-based technical assistance, and remote troubleshooting. Responsibilities include system installation, commissioning, maintenance, issue resolution, and performance monitoring. This role requires hands-on experience with both hardware and software and the ability to diagnose system-level issues involving batteries, battery management systems (BMS), power electronics, communication networks, and cloud- or edge-based software. The candidate will work closely with customers, engineering teams, manufacturing partners, and business-development teams. Occasional after-hours support and domestic travel will be required based on customer and project needs.

Requirements

Experience with batteries, BMS, energy-storage systems, power electronics, EV charging systems, or renewable-energy products.
Experience commissioning or servicing battery packs, BMS, EMS, PCS, inverters, or cloud-connected energy systems.
Familiarity with battery operating parameters, fault alarms, protection functions, state of charge, and state of health.
Experience using diagnostic tools such as multimeters, oscilloscopes, CAN analyzers, and data loggers.
Basic experience with Python, Linux, firmware updates, network configuration, or system-log analysis.
Knowledge of battery safety, electrical safety, and applicable industry standards.

Responsibilities

Serve as the primary technical contact for customers and answer product-related questions by phone, email, and remote-support tools.
Lead onsite installation, commissioning, configuration, testing, maintenance, and system upgrades.
Troubleshoot hardware, software, communication, and system-integration issues involving battery packs, BMS, EMS, PCS, inverters, gateways, and edge devices.
Analyze system logs, operating data, fault codes, and alarms to identify root causes and recommend corrective actions.
Work with engineering and quality teams to resolve field issues, verify solutions, and improve product reliability.
Develop service procedures, troubleshooting guides, technical documentation, and customer-training materials.
Provide occasional after-hours support and travel domestically to customer and project sites as required.