Wärtsilä is an innovative technology company known for being a forerunner in the Marine and Energy markets. Every day, we – Wärtsilians - put our hearts and minds into turning Wärtsilä's purpose of enabling sustainable societies through innovation in technology and services into reality. Our ultimate aim is to provide increased value to both our customers and society. New, game-changing ideas and continuous improvement have been part of our DNA since 1834. Together, we can create new business opportunities and more sustainable future that we can all be proud of.

We want to transition the world towards a decarbonised and sustainable future. By pushing the boundaries of engineering and technology, we can make it work. We are always on the lookout for future-oriented talent – want to join the ride?

We are currently inviting applications for the position of O&M Technician to be based at our Mangal site in Kogi State, Nigeria.

This role is critical to ensuring the smooth operation of our plant during assigned shifts, in alignment with company policies,procedures, and operational plans. The successful candidate will be expected to deliver results in accordance with defined standards and guidelines, contributing directly to the plant’s performance and reliability.

If you are passionate about mechanical operations and committed to excellence in delivery, we encourage you to come onboard!

Main responsibilities:

Responsible for all pant related Operations and maintenance (O&M) activities within the assigned shift.
Ability to troubleshoot 4-stroke engines effectively Electrically.
Good knowledge and use of all Electrical measuring equipment.
Good knowledge of operation of engine auxiliary systems and their electrical maintenance.
General knowledge of maintenance and operations of diesel engines.
Understanding of all engine fuels, fluids and air supply.
Quality, safety, and Environment skills
Must be capable of performing trending and analysing of different operational parameters.
Responsible for all plant related planned and unplanned maintenance activities as assigned in respective shift.
Reports resources and time utilized, job scope expansion, rework or deferred maintenance as required.
Take active part in trouble shooting and Electrical maintenance jobs during shift.
Monitor all parameters of engine and auxiliaries during operation.
Maintain logbook history related to all O&M activities within the shift.
Utilize tools, equipment, accessories in such a manner to maximize useful operating life.
Be able to start the local and remote engines and to synchronize them and present immediate solutions of protection of the equipment in cases of possible flaws.
Should have a foundational understanding of Maximo and associated tools for reporting.
Permitting compliance with safety requirements and liaison and coordination with other departments as required.
Ensures equipment, materials and tools are on-hand for work execution.
Implementation of routine PM checks including vibration & temperature inspections on rotating equipment and ensuring logging or recording of all readings.
Ensure compliance as per instructions related to implementation of Technical Bulletins and updated maintenance procedures released from time to time.
Diesel Engine ABC knowledge
Lock out and tag out system implementation.
To handle any other plant related O&M activity as assigned by the respective site Managers.

Education & experience:

Higher National Diploma (HND) or Degree in Engineering (B.Eng.) or Technology (B.Tech) in Mechanical or Electrical
3-5 years of relevant work experience in Wartsila DF Engine.
Candidates having experience in Wartsila 34DF engine will be preferred
Ability to troubleshoot 4-stroke engines effectively mechanically.
Good knowledge of operation of engine auxiliary systems and their Mechanical & Electrical maintenance.
General knowledge of maintenance and operations of diesel engines.
Understanding of all engine fuels, fluids and air supply.
Quality, safety, and Environment skills
Diesel Engine ABC knowledge
Capability of performing trending and analyzing of different operational parameters.

Last application date: 24/07/2026

At Wärtsilä we value, respect and embrace all our differences, and are committed to diversity, inclusion and equal employment opportunities; everyone can be their true self and succeed based on their job-relevant merits and abilities.

Please note that according to Wärtsilä policy, voluntary consent for a security check may be required from candidates being considered for this position, depending on the applicable country.

This is Wärtsilä

Wärtsilä is a global leader in innovative technologies and lifecycle solutions for the marine and energy markets. Our team of 18,300 professionals, in more than 230 locations in 77 countries, shape the decarbonisation transformation of our industries across the globe. Read more on .