Amentum is seeking a Maintenance Technician III to join our team in Mossville, IL!
- Typical work schedule is M-F,6:30am -3:00pm; hours may vary based on business demand.
- Weekend hours may be scheduled to support our 24/7 operation.
This Maintenance Technician is responsible for providing a high level of expertise in responding to work orders, troubleshooting, and providing preventive as well as corrective maintenance on the facility mechanical equipment and systems in an industrial, manufacturing and office environment.
Must have a great understanding of mechanical systems, and plumbing. Must have the ability to diagnose, troubleshoot and repair: ventilation equipment, pumps, fans, etc. in an industrial and office environment. Requires the ability and knowledge to learn how to work safely with 3-phase power up to and including 480V.
Must have the ability to identify and correct any safety-related issues and perform independent equipment evaluations to identify potential equipment failures. General Maintenance of equipment will also be required.
Responsibilities:
- Conducts preventive maintenance inspections and performs required preventive maintenance actions such as lubrication, cleaning, filter changes, etc.
- Troubleshoots and repairs blowers, pumps and fans.
- Troubleshoots and repairs heat exchange equipment.
- Troubleshoots and repairs high pressure(10,000 psi) hydraulic equipment.
- Performs pipefitting repairs.
- Troubleshoot and repair basic electrical issues.
- Relocation of machines/fixtures, materials, and equipment as required.
- Performs preventive maintenance on mechanical systems control and operating systems as scheduled in the Computerized Maintenance Management System (CMMS).
- Responds and provides service and feedback to the customer on all work orders while assuring compliance with codes, regulations and industry standards.
- Recommends measures to improve maintenance methods and equipment performance.
- Safely performs functions of the position including following proper safety guidelines such as job hazard analysis and lockout/tagout procedures and wearing PPE as required.
- Operates various measuring, diagnostic and testing instruments to help provide energy efficiency solutions.
- Operates a variety of equipment such as hand tools, laptop computers and diagnostic hardware to perform work.
- Maintains a strict schedule to be successful in the assignment yet demonstrates flexibility in the day-to-day activities and scheduling for the benefit of the customer.
- Other duties as assigned by Manager or Supervisor.
- New hires are required to serve on the safety committee during their first year of employment
Other Attributes:
- Must be willing to work overtime when required. May be required to work holidays and weekends.
- Must be willing to cover on call work rotation
Compensation Details:
The compensation range or hourly rate listed for this position is provided as a good-faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.
Benefits Overview:
Our health and welfare benefits are designed to support you and your priorities. Offerings include:
Health, dental, and vision insurance
Paid time off and holidays
Retirement benefits (including 401(k) matching)
Educational reimbursement
Parental leave
Employee stock purchase plan
Tax-saving options
Disability and life insurance
Pet insurance
Note: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.
Original Posting:
02/19/2026 - Until Filled
Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs.
Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters.
