Site Operations Engineer

Critical Loop; Long Beach (CA); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Stock options

Health coverage

Retirement plan

Unlimited PTO

Job summary

Critical Loop is hiring a Site Operations Engineer to support deployment, operation, and maintenance of mobile BESS fleets and related energy systems. You will ensure safe field operations, maximize uptime, and collaborate with controls and software teams on testing and validation of control logic.

The role is hands-on, customer-facing, with travel up to 25% and on-site work at various customer sites across California.

Qualifications

• Experience operating or supporting battery energy storage systems or similar power assets in the field.
• Hands-on experience with power electronics, field maintenance, and troubleshooting issues across hardware, software, and networking.
• Has worked on 480V or higher systems and can safely verify de-energized conditions before every touch.
• Experience using backend or controls software to monitor and operate energy systems.
• Customer-facing experience and strong communication skills, including difficult conversations when systems are down or timelines slip.
• Comfortable managing work on a job site independently with minimal supervision.
• Familiarity with electrical safety practices and regulatory standards.

Responsibilities

• Manage fleet scheduling, dispatch, deployment, and retrieval to ensure reliable service delivery across active customer sites.
• Oversee site readiness, electrical connections, grounding, and system startup during deployments.
• Execute commissioning of battery energy storage and power systems in the field, safely verifying de-energized conditions before every touch.
• Develop and execute preventive and corrective maintenance plans to maximize fleet uptime.
• Lead hands-on troubleshooting of electrical, mechanical, battery, and power electronics issues independently using a structured diagnostic process.
• Serve as the primary escalation point for on-site and remote troubleshooting and customer support.
• Coordinate logistics, transportation, staging, and heavy equipment movement for deployments.
• Operate and test system control logic, state machines, and transitions between operating modes.
• Maintain accurate documentation on fleet status, maintenance activities, telemetry, and system performance.
• Communicate clearly with engineering teams on field findings and open issues, and with customers on status and resolution timelines.
• Provide on-call support in on-call rotation.
• Frequent site visits to customer sites up to 25% of time.

Skills

Battery energy storage

Power electronics troubleshooting

On-site field maintenance

Customer-facing communication

Risk-aware safety practices

Tools

Modbus protocols

Telemetry platforms

Industrial controls software

Job description

About Critical Loop

Critical Loop is shaping the next generation of energy systems by building the integrated edge grid of the future. Specializing in advanced energy management and battery control systems, Critical Loop empowers businesses and communities to seamlessly unite distributed energy resources for faster, more reliable, and affordable grid access. With deep expertise in grid modernization and a passion for creating resilient, responsive energy solutions, Critical Loop drives innovation at the intersection of technology and energy.

Site Operations Engineer

Critical Loop | Full-Time | On-SIte | Multiple Openings

The Role

We are hiring operations engineers to support the deployment, operation, maintenance, and performance of our mobile BESS fleet and other distributed energy systems. You will ensure safe and reliable field operations, drive rapid customer response, and maintain high system uptime across active sites.

You will also work closely with our controls and software teams to test and validate advanced control logic across diverse power applications. This is a hands-on, customer-facing role with direct impact on daily operations and product evolution. If you need close oversight to function or treat safety as secondary to speed, this is not the right fit.

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What You'll Do

• Manage fleet scheduling, dispatch, deployment, and retrieval to ensure reliable service delivery across active customer sites


• Oversee site readiness, electrical connections, grounding, and system startup during deployments


• Execute commissioning of battery energy storage and power systems in the field, safely verifying de-energized conditions before every touch


• Develop and execute preventive and corrective maintenance plans to maximize fleet uptime


• Lead hands-on troubleshooting of electrical, mechanical, battery, and power electronics issues independently using a structured diagnostic process


• Serve as the primary escalation point for on-site and remote troubleshooting and customer support


• Coordinate logistics, transportation, staging, and heavy equipment movement for deployments


• Operate and test system control logic, state machines, and transitions between operating modes


• Maintain accurate documentation on fleet status, maintenance activities, telemetry, and system performance


• Communicate clearly with engineering teams on field findings and open issues, and with customers on status and resolution timelines


• Provide on-call support in on-call rotation


• Frequent site visits to customer sites up to 25% of time

Must-Haves

• Experience operating or supporting battery energy storage systems or similar power assets in the field


• Hands-on experience with power electronics, field maintenance, and troubleshooting issues across hardware, software, and networking


• Has worked on 480V or higher systems and can safely verify de-energized conditions before every touch


• Experience using backend or controls software to monitor and operate energy systems


• Customer-facing experience and strong communication skills, including difficult conversations when systems are down or timelines slip


• Comfortable managing work on a job site independently with minimal supervision


• Familiarity with electrical safety practices and regulatory standards

Nice-to-Haves

• Experience with BESS, UPS, inverters, DC infrastructure, portable switchgear, or microgrid systems


• Experience with mobile or portable power systems and fleet management


• Basic coding experience or familiarity with Python, Julia, R, or MATLAB


• Experience writing or modifying site configurations and defining state transitions for deployed systems


• Quality wiring, terminations, and ferrule work to a professional standard


• Familiarity with fleet management systems or telemetry platforms


• Familiarity with Modbus or similar industrial control protocols


• Prior background in a startup or fast-scaling operations environment


• Certifications in battery systems, heavy equipment operation, or electrical safety

Work Authorization We are not able to offer visa sponsorship for this role. Candidates must be authorized to work in the United States without sponsorship now or in the future.

At Critical Loop, we're committed to rewarding and supporting our team. Our benefits package includes equity ownership through stock options, giving you a stake in our success, along with comprehensive health coverage (medical, dental, and vision) through an HRA with a generous allowance. We also provide a retirement savings plan and unlimited paid time off so you can recharge and maintain work-life balance.

Critical Loop is an equal opportunity employer. We're committed to building a diverse team and creating an inclusive workplace where everyone can thrive. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, or any other protected characteristic under applicable law.