UPS Battery Commissioning & After-Sales Engineer

Ampace; California; On-site; USD 90,000 - 120,000; Full time

Job summary

Ampace (新能安) is a leading global player in AIDC UPS lithium batteries, providing safe, high-power battery solutions to data centers and OEMs worldwide. This on-site role supervises installation and commissioning of UPS units and battery packs, with a focus on safety, testing, and documentation.

The ideal candidate holds a bachelor’s degree in Electrical Engineering or related field and brings hands-on experience with UPS systems, battery maintenance, and high-voltage safety.

Qualifications

• Bachelor's degree or above in Electrical Engineering or related field.
• Solid AC/DC circuit fundamentals and UPS architecture knowledge.
• Ability to read schematics and wiring diagrams; familiarity with testing equipment.
• Experience in UPS installation/commissioning, battery maintenance, or data-center operations.
• High-voltage safety awareness and willingness to travel.

Responsibilities

• Supervise on-site installation and commissioning of UPS units and lithium battery packs.
• Troubleshoot faults on-site and remotely across rectifiers, inverters, cells, and control boards.
• Perform inspections and preventive maintenance including calibration and insulation testing.
• Enforce NFPA 70E/OSHA safety standards and manage on-site risks.
• Prepare commissioning reports and train customer's O&M staff.

Skills

AC/DC circuit fundamentals

Read electrical schematics

Troubleshooting UPS systems

Customer training capabilities

Education

Bachelor's degree in Electrical Engineering or related field

Tools

Multimeters

Clamp meters

Megohmmeters

Electrical testing equipment

Job description

Ampace (新能安) is a leading global player in AIDC (AI data center) UPS lithium batteries, supplying safe, high-power battery solutions — including advanced semi-solid-state cell technology — to UPS OEMs, hyperscalers, and colocation providers worldwide. As AI computing drives unprecedented power demand, our battery platforms keep the world's most critical data centers running.

Responsibilities:

• Supervise on-site installation and commissioning of UPS units and lithium battery packs — wiring inspection, polarity, torque, insulation testing, power-on, float/boost setting, balancing, and discharge testing — and prepare commissioning and acceptance reports.
• Troubleshoot UPS and battery faults on-site and remotely — voltage anomalies, charging issues, overheating, alarms, mode-switch failures — locating faults across rectifiers, inverters, cells, cabling, sensors, and control boards.
• Perform inspections and preventive maintenance — cell voltage, internal resistance, temperature, connection tightness, calibration, charge-discharge and insulation testing, and LOTO-safe operations — with equipment records and battery-health tracking.
• Enforce electrical-safety standards (NFPA 70E, OSHA, LOTO, PPE, arc-flash protection) and manage on-site risks such as DC short circuit, thermal runaway, and electric shock.
• Explain fault causes and solutions to customers, train their O&M staff, and complete commissioning records, work orders, inspection reports, and spare-parts management.

Requirements:

• Bachelor's degree or above in Electrical Engineering, Mechatronics, Automation, Electronic Engineering, or a related field.
• Solid AC/DC circuit fundamentals; familiarity with UPS double-conversion architecture and rectifier/inverter/bypass logic; battery-system knowledge including float/boost charging, internal resistance, capacity, balancing, and thermal runaway.
• Able to read electrical schematics, wiring diagrams, and single-line diagrams; skilled with multimeters, clamp meters, internal-resistance testers, and megohmmeters.
• Experience in UPS installation and commissioning, battery maintenance, or data-center operations and maintenance.
• High-voltage electrical-safety awareness (LOTO, live-working specifications); strong service mindset; able to travel frequently and handle emergency repairs.
• Authorized to work in the United States.