Field Service Technician

Cornerstone Engine Solutions LLC.

About the Role

Cornerstone Engine Solutions (CES) is seeking a dependable, motivated, mechanically inclined Field Service Technician (FST) to provide field service, preventative maintenance, troubleshooting, repairs, installations, and customer support for standby generator systems. The FST will work with various generator sizes, manufacturers, engines, fuel systems, electrical systems, transfer switches, controls, and related equipment across residential, agricultural, commercial, and other applications, including air-cooled and liquid-cooled generators. This is a hands-on position that requires independent work and teamwork. Technicians must perform duties according to their training and experience while developing their technical skills.

Key Responsibilities

• Field Service & Maintenance

• Perform scheduled preventative maintenance and routine service according to manufacturer specifications and CES procedures.

• Inspect generator systems and related equipment for wear, damage, leaks, deterioration, or potential failure.

• Perform oil & filter changes, air filter replacement, battery testing, fluid/coolant checks, belt inspections, and other required maintenance.

• Test generator operation after service, assist with load bank testing, and identify recommended repairs or additional service needs.

• Follow manufacturer maintenance schedules and maintain clean, organized job sites.

• Troubleshooting & Diagnostics

• Troubleshoot mechanical, electrical, fuel, cooling, exhaust, battery, transfer switch, and control-system issues.

• Use appropriate meters, diagnostic equipment, software, tools, wiring diagrams, schematics, and service manuals.

• Identify abnormal operating conditions, communicate findings, and verify proper operation after repairs.

• Assist senior technicians with complex diagnostics and seek help when issues exceed current training or qualifications.

• Repairs & Installation

• Assist with or independently perform authorized repairs within training and qualifications.

• Replace defective, damaged, or worn components as authorized.

• Assist with engine repairs, control systems, transfer switches, major repairs, and new generator installations.

• Assist with startup, commissioning, and operational testing.

• Follow manufacturer specifications, applicable codes, and CES procedures.

• Properly handle, transport, and install parts/equipment while maintaining a clean work area.

• Customer Service & Communication

• Provide courteous, professional customer service and represent CES positively.

• Answer questions about generator operation, maintenance, and service within the FST's knowledge.

• Explain findings, maintenance needs, and repair recommendations clearly without unnecessary jargon.

• Communicate professionally with customers, fellow technicians, and CES office staff.

• Identify additional service needs, explain basic operation/maintenance when appropriate, and treat customer property with care and respect.

• Understand CES services, including maintenance, inspections, repairs, installations, replacements, upgrades, and service programs.

• Communication With CES Technicians & Office Staff

• Clearly report unusual noises, leaks, fault codes, operating conditions, component failures, and other findings.

• Communicate job progress, parts needs, customer concerns, and follow-up requirements to the office.

• Provide accurate information for estimates, scheduling, parts orders, repairs, and follow-up.

• Work cooperatively with other technicians and ask for help when needed.

• Documentation & Reporting

• Complete required service reports, inspection sheets, maintenance checklists, job sheets, parts records, receipts, photographs, and other documentation.

• Record equipment condition, work performed, parts used, diagnostic findings, testing, recommended follow-up, time, mileage, and materials.

• Use company phones, tablets, software, and other technology to document work.

• Submit accurate, timely reports and promptly communicate significant equipment, safety, or customer concerns.

• Tools, Equipment & Company Vehicles

• Properly use, maintain, and care for company tools, diagnostic equipment, technology, and safety equipment.

• Report missing, damaged, or malfunctioning equipment.

• Safely operate assigned company vehicles, secure tools/materials during transport, and perform routine vehicle checks.

• Maintain clean, organized vehicles, work areas, and job sites.

• Safety & Compliance

• Follow CES policies, applicable OSHA/DOT requirements, traffic laws, environmental regulations, codes, and manufacturer instructions.

• Use required personal protective equipment and safe work practices around engines, rotating equipment, electrical systems, batteries, fuel, hot surfaces, and pressurized systems.

• Follow proper procedures for handling fuels, oils, coolants, batteries, filters, and service materials.

• Immediately report accidents, injuries, unsafe conditions, damaged equipment, and other safety concerns.

• Never knowingly perform work beyond training, qualifications, or authorization.

Physical & Environmental Requirements

Must be able to:

• Lift, carry, push, and pull tools, parts, and equipment weighing up to 75 pounds individually.
• Bend, kneel, crouch, climb, reach, and work in awkward or confined spaces for extended periods.
• Stand/walk for extended periods and work from ladders or elevated areas when required.
• Work around operating generators, engines, electrical equipment, fuel systems, and mechanical equipment.
• Work indoors/outdoors in heat, cold, rain, snow, wind, and other challenging conditions.
• Travel to residential, agricultural, commercial, and other customer locations.
• Work extended hours or respond to emergency calls when required.

General Performance Expectations

• Arrive on time, prepared, and maintain a professional appearance and attitude.
• Treat customers, coworkers, vendors, and business partners with respect.
• Complete work safely, accurately, efficiently, and according to CES standards.
• Demonstrate honesty, integrity, attention to detail, and pride in workmanship.
• Take ownership of assignments and follow through on commitments.
• Continue learning through hands-on experience, manufacturer training, certifications, and CES training.
• Learn new generator models, technologies, and diagnostic procedures.
• Work independently and as part of a team; recognize limitations and seek assistance.
• Protect company/customer property and maintain confidentiality.
• Represent CES positively in every customer interaction.

Qualifications

• Strong mechanical aptitude & willingness to learn.
• Ability to follow written/verbal instructions.
• Basic mechanical, engine, or electrical knowledge preferred.
• Generator, diesel, automotive, heavy equipment, HVAC, electrical, or similar experience preferred but not required.
• Strong problem-solving, communication, customer service, and critical-thinking skills.
• Dependable, punctual, detail-oriented, and committed to quality workmanship.
• Ability to work independently within training and effectively as part of a team.
• Valid driver's license & acceptable driving record.
• Ability to meet physical & environmental requirements.

Preferred Qualifications

• Standby generator service or installation experience.
• Diesel/gasoline engine or electrical troubleshooting experience.
• Automatic transfer switch & generator control experience.
• Ability to read wiring diagrams/schematics & use diagnostic software/equipment.
• Vocational/technical education in diesel, automotive, electrical, or industrial maintenance.
• Generator manufacturer training/certifications.
• Experience with agricultural, commercial, industrial, or large-generator applications.
• Field service or customer-facing technical experience.

Position Requirements

The FST must be willing & able to:

• Travel to customer locations as required.
• Work variable schedules & emergency/after-hours calls when needed.
• Work independently within training & alongside other technicians on complex jobs.
• Continue technical training & education.
• Follow all CES policies, procedures, & standards.
• Perform all duties safely & professionally.