Amentum is a global leader in advanced engineering and innovative technology solutions, trusted by the United States and its allies to address their most significant and complex challenges in science, security and sustainability. Our people apply undaunted curiosity, relentless ambition and boundless imagination to challenge convention and drive progress. Our commitments are underpinned by the belief that safety, collaboration and well-being are integral to success. Amentum is currently seeking a Planner to support a government contract based in Jacksonville, Florida at Mayport. POSITION SUMMARY The Planner is responsible for supporting the site’s operations/maintenance planning and scheduling activities. DUTIES / ESSENTIAL FUNCTIONS Helps develop job plans, deliverables and estimates for maintenance and repair tasks. Ensures material and tools are available, appropriate craft and skill level are identified, job plan is adequate to identify all task for accomplishment of the work and safety requirements (OSHA, Site specific safety requirements) are identified prior to work commencing. Understands the interrelationships of trades and how work is performed in a multi-craft environment so that the appropriate work is performed first, and follow-on work is accomplished accordingly. Works closely with Installation Facility Supervisors/Managers, site maintenance personnel, Government and subcontractors to coordinate recurring and non-recurring maintenance activities at these sites which primarily include office, industrial (Utilities, and Hangars are examples) and warehouse facilities. Works with team members to provide meaningful schedules and clear estimates to the estimators for facilities maintenance projects performed at Naval Station Mayport, Florida, Marine Corps, Support Facility – Blount Island (MCSF-BI) Jacksonville, Florida; and the outlying areas supported by these commands. Reviews proposal specifications, drawings, and attends pre-bid meetings to determine scope of work and required content of estimates & provide complete conceptual estimates and estimates prepared with incomplete plans to carry through to final estimates. Other duties assigned by supervisor. QUALIFICATIONS / EDUCATION / EXPERIENCE Two (2) years college or vocational training in area of specialty desired or five (5) years relevant experience, or any equivalent combination of education/ experience for total of five (5) years. Planning experience in more than one of the following fields: Electrical, HVAC, Plumbing/Pipefitting, Utility Systems, High Voltage Electricity, Carpentry, and/or Painting. Knowledge of estimating, and cost control. Knowledge of estimating with P&ID drawings. Knowledge of Microsoft Office with proficiency in Excel. Understanding of corporate and industry practices, processes and standards, estimating techniques, scheduling, project delivery and cost control. Good communication and interpersonal skills. Must be able to obtain and maintain facility credentials/authorization. Note: US Citizenship is required for facility credentials/authorization at this work location. OTHER RESPONSIBILTIES· Safety - Amentum enforces a safety culture whereby all employees have the responsibility for continuously developing and maintaining a safe work environment. As appropriate, each employee is responsible for completing all training requirements and fulfilling all self-aid/buddy aid responsibilities, participating in emergency response tasks and serving on safety committees and teams.· Quality - Quality is the foundation for the management of our business and the keystone to our goal of customer satisfaction. It is our policy to consistently provide services that meet customer expectations. Accordingly, each employee must conform to the Amentum Quality Policy and carry out job activities in compliance with applicable Amentum Quality System documents and customer contracts. Each employee must read and understand his/her Quality Management and Customer Satisfaction responsibilities.· Procedure Compliance - Each employee must read, understand, and implement the general and specific operational, safety, quality and environmental requirements of all plans, procedures and policies pertaining to job. Compensation Details: $75,000 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: 10/22/2026 - 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. Welcome back! We encourage you to check on the status of your current job applications with us. You can also search for a list of our current job openings and see if there are any new positions that might be a good fit for you. Thank you for continued interest in employment with Amentum. For more than 100 years, Amentum has tackled the world’s toughest challenges to deliver agile and steadfast solutions to the U.S. government and its allies. With more than 50,000 employees on all seven continents and in more than 60 countries, Amentum delivers a broad range of operational support services to meet the critical needs of our clients. Our headquarters are in Chantilly, VA. Find us online at https://www.amentum.com/ If you need a reasonable accommodation for any part of the employment process, please complete our Accommodation Request. Requests for accommodation will be considered on a case-by-case basis. If you need assistance, please reach out to [email protected] EEO including Disability/Protected Veterans Labor Laws Posters Amentum has become aware of unauthorized individuals who are falsely using the Amentum name and /or logo in an attempt to solicit fees from potential job seekers. These deceptive and unauthorized individuals are soliciting money, promising placement in a position with Amentum. Please note any communication requesting any amount of money in exchange for employment with Amentum is fraudulent. These communications do not originate from Amentum and are not associated with the recruitment process. Amentum and its affiliates never charge candidates fees or payments of any kind in order to secure employment. As a precaution, we recommend you do not disclose personal or financial details to anyone as a response to an unsolicited email, social media, or dating website request. Amentum will never as ask for a placement fee or any other fee to expedite the hiring process. If you are contacted by anyone offering employment with Amentum, you should never be asked to pay a fee for recruiting. Amentum personnel will always send email from an identifiable corporate account (ending in @amentum.com) and never from a public email account like Yahoo!, Google, Gmail, or Hotmail. If you are contacted regarding a fraudulent employment proposal, we encourage you to alert your local law enforcement agency/police authority. To read more about Amentum’s commitment to ethics, please click here.

Planner.

more at Pae.

Deputy Project Manager

Vehicle Maintenance Superintendent

Supply Technician

similar roles.

Security Lead

Principal Product Security Engineer - Medical Device

Director of Identity and Access Management (IAM)

Business Analyst, IAM Strategy & Product Management

Application Security Digital Experience & Intelligent Automation Lead

Apprenticeship as a Safety and Security Specialist (m/f/d) starting in September 2027