Caterpillar Mechanic at O.K.I. (Nig) Limited

O.K. Isokariari (Nigeria) Limited is a leading Engineering, Procurement, and Construction company with over 50 years of experience, renowned for its efficiency, reliability, and high-quality service delivery. Since its incorporation in 1972, the company has been involved in planning, designing, constructing, and maintaining civil engineering and building projects for government agencies and private clients. With state-of-the-art equipment, including its own asphalt plant, quarry, and transport fleet, the company delivers complex infrastructure projects such as highways, bridges, and industrial facilities within budget and timelines. Committed to international quality and safety standards, O.K. Isokariari prioritizes sustainable practices to ensure health, safety, and environmental protection.

We are recruiting to fill the position below:

Job Title: Caterpillar Mechanic

Location: Port Harcourt, Rivers
Employment Type: Full-time

Job Description

• We are seeking a highly skilled Caterpillar Mechanic to join our workshop team. The ideal candidate will be an expert in the diagnostic, repair, and preventative maintenance of Caterpillar heavy machinery.
• This role requires specialized proficiency in Hydraulic Systems, Engine Overhaul, and Transmission/Power Train repair.
• The successful candidate will ensure our equipment remains operational at project sites, minimizing downtime and ensuring the highest safety standards.

Responsibilities

• Technical Diagnostics: Perform expert-level troubleshooting on CAT heavy equipment, utilizing diagnostic tools (CAT ET/SIS) to identify mechanical, hydraulic, and electrical failures.
• Hydraulic System Expert: Inspect, test, and repair high-pressure hydraulic systems, including pumps, motors, cylinders, and control valves.
• Engine and Power Train Specialist: Execute complete engine rebuilds, top-end repairs, and transmission/final drive troubleshooting for various CAT models.
• Preventative Maintenance: Perform scheduled maintenance tasks (oil changes, filter replacements, fluid analysis) to extend the lifecycle of heavy equipment.
• Site Operations Support: Provide rapid technical support to project sites to ensure that technical staff and operators maintain high operational standards.
• Compliance & Safety: Enforce mandatory Personal Protective Equipment (PPE) policies and adhere strictly to site safety regulations during all repair and maintenance activities.

Requirements

• Experience: Minimum 10 years of hands-on experience specifically with Caterpillar heavy equipment.
• Proven experience with CAT Hydraulic Systems (high-pressure circuits and schematics).
• Demonstrated expertise in CAT Engine diagnosis and repair.
• Proficiency in Transmission and Power Train systems.
• Technical Proficiency: Ability to read and interpret complex technical manuals, hydraulic schematics, and electrical diagrams.
• Operational Mindset: Ability to work in demanding site environments and maintain high standards of technical reporting.

Application Closing Date
17th June, 2026.

How to Apply
Interested and qualified candidates should send their CV to: hr@okisokariari.com using the job title as the subject of the email.