Mechanical Technician

Seeking Mechanic to support field compression and production operations. This role is responsible for the maintenance, troubleshooting, overhaul, and repair of high‑horsepower natural gas compression equipment, with a strong focus on CAT 3500 and 3600 series engines paired with Ariel compressors.
Key Responsibilities

• Perform preventive and corrective maintenance on large horsepower Caterpillar engines (3500 & 3600 series)
• Diagnose and repair mechanical, electrical, fuel, ignition, and cooling systems on engine‑driven compressor packages
• Conduct overhauls and major component rebuilds, including power assemblies, heads, crankcases, and turbo systems
• Inspect, maintain, and service Ariel reciprocating compressors, including valves, pistons, rods, packing, and bearings
• Troubleshoot vibration, performance, and operational issues to minimize downtime
• Utilize CAT ET or similar diagnostic tools where applicable
• Complete accurate maintenance records, work orders, and inspection reports
• Ensure all work is performed in compliance with company safety standards, environmental regulations, and operational best practices
• Collaborate with operations, reliability, and engineering teams to improve equipment performance and uptime
• Provide field support during startups, shutdowns, and emergency call‑outs as required

Required Qualifications

• Proven hands‑on experience as a large horsepower mechanic in oil & gas or compression environments
• Extensive knowledge of CAT 3500 and/or 3600 series engines
• Working experience with Ariel compressors (JGA, JGR, KB, A, or similar frames)
• Strong mechanical aptitude with the ability to diagnose complex equipment issues
• Ability to read and interpret technical manuals, schematics, and service bulletins
• Willingness to work in field conditions, including rotating schedules, extended hours, or on‑call support
• Valid driver’s license and ability to meet site access requirements

Preferred Qualifications

• Formal factory or OEM training on CAT 3500/3600 engines
• Ariel compressor training and/or certifications
• Familiarity with vibration analysis, root cause failure analysis (RCFA), or reliability programs

Work Environment

• Field‑based role supporting natural gas compression assets
• Exposure to heavy equipment, rotating machinery, and outdoor working conditions
• Safety‑sensitive position requiring strict adherence to company and regulatory standards

With over 90 years' combined experience, NES Fircroft (NES) is proud to be the world's leading engineering staffing provider spanning the Oil & Gas, Power & Renewables, Chemicals, Construction & Infrastructure, Life Sciences, Mining and Manufacturing sectors worldwide. With more than 80 offices in 45 countries, we are able to provide our clients with the engineering and technical expertise they need, wherever and whenever it is needed. We offer contractors far more than a traditional recruitment service, supporting with everything from securing visas and work permits, to providing market-leading benefits packages and accommodation, ensuring they are safely and compliantly able to support our clients.