Human Resources Business Partner

Amentum is seeking a Human Resources Business Partner with an active TS/SCI security clearance to join our team in McLean, VA! As an HRBP, you will act as a partner and consultant to the business.

Essential Responsibilities:

• Acts as an initial employee/manager point of contact for, and performs routine tasks related to the administration, execution, and tracking of human resource activities including but not limited to staffing; compensation; leave; recognition and morale; training and development; disciplinary matters; disputes and investigations; performance and talent management; and manager coaching.

• Facilitate communication between union representatives and management: Serve as a liaison to ensure both parties understand and adhere to the terms of the union contract. This includes mediating discussions, addressing concerns, and fostering constructive dialogue to maintain a positive working relationship.

• Monitor compliance with labor agreement terms: Collaborate with management and union officials to ensure workplace policies, practices, and actions align with the negotiated contract. Address any potential violations proactively and recommend corrective actions if necessary.

• Partners with recruiting to facilitate hiring, selection, and on-boarding actions.

• Partner with security on employee relation issues, investigations, and other shared responsibilities.

• Monitors and tracks HR metrics for assigned contract.

• Acts as a liaison between employees, leaders, and corporate departments including benefits and payroll.

• Partners with Program Management to identify attrition issues and trends and implement appropriate strategies to address retention challenges.

• Provides proactive guidance to managers/employees on performance management (coaching, career development, counseling, and/or disciplinary actions), communications and training, employee relations issues, interpretation of employment laws and company PPI.

• Investigates employee complaints/allegations in accordance with company protocol.

• Supports compliance efforts, including the communication, dissemination, and implementation of company policies, as well as federal, state, and local employment laws and regulations.

• Supports program HR and HRIS activities to include validating HRIS data accuracy; org chart alignment; option year Service Contract Act pay rate, wage, health & welfare changes; service bridge processing; vacation/leave info; and other key information. Identifies errors and makes corrections and/or liaises with appropriate leader.

• Responds to employment-related questions from applicants, employees, and supervisors, referring complex and/or sensitive matters to the appropriate staff. Conducts appropriate follow-up and helps close out inquiries.

• Supports program and company initiatives. Tracks and prepares reports for analysis and distribution on such activities. Helps identify best practices and makes recommendations to improve the employee/manager experience including new hire assimilation, training, and performance management.

• Attends and participates in employee disciplinary meetings, terminations, and investigations. Assists with interviews, documentation, and reports.

• Drives change awareness by ongoing development of knowledge of trends, best practices, regulatory changes, and new technologies in human resources.

• Performs other duties as assigned.

Minimum Requirements:

• Bachelor’s degree in Human Resources, Business, or related field or equivalent combination of education and experience.

• 2 years of relevant experience.

• Must work on site 5 days per week, 8 hours per day.

• Proficiency with MS Office.

• Must be a US citizen and possess an active TS/SCI security clearance.

Preferred Qualifications:

• Previous SCA/Union experience.

• Experience with government contracting.

• Working knowledge of WorkDay as the HRIS.

Compensation Details:

$90,000 - $110,000

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:

07/15/2026 - 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 ( .