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Human Resources Manager - Acquisition Integration

Irvine, California Position Type: Full Time Req ID: 2026-1617508 Date posted: 06/20/2026

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Company Overview:

Allied Universal®, North America’s leading security and facility services company, offers rewarding careers that provide you a sense of purpose. While working in a dynamic, welcoming, and collaborative workplace, you will be part of a team that contributes to a culture that positively impacts the communities and customers we serve.

Manager of Human Resources – Acquisition Integration is responsible for assisting in the managing and executing of all acquisition-related HR functions, including creating, managing, tracking, processing, and continuously improving the HR acquisition integration planning and execution process to ensure the successful integration of acquisition employees and business operations.

RESPONSIBILITIES:

Create, manage, track, and continuously improve the HR acquisition integration planning and execution process, including checklists, procedures, templates, trackers, and other tools to ensure all activities that may be required in an acquisition transition relative to the HR functions are executed in a consistent, compliant, effective, and organized manner; evaluate the unique needs and challenges of each potential transition and identify and recommend strategies to minimize employee turnover at transition
Conduct or assist in the execution of the onboarding and transition of all acquired employees according to the targeted timelines; develop and execute data migration plans, develop and manage synergy rosters for administrative/overhead employees, document individual transition programs (retained/short-term/termed), generate termination and severance materials and trackers, ensure all transition related activities within these HR functions are managed and audited throughout the process
Design and implement internal audits on data migration; manage (or coordinate with others within Corporate HR) processes related to new hire packet development, onboarding, I-9 collection, employee files, local state required licensing or training documentation, tracking last day worked for short-term employees, overseeing the execution of severance payments, and other processes to ensure company standards and legal requirements are being followed
Assist the Director, Human Resources Acquisitions Integration with the managing and executing of all integration activities related to employee communications, offer letters and onboarding, HR compliance obligations (such as I-9s, new hire documents, personnel file transfer/creation, etc.), benefit transition, HR vendor notifications/integrations and terminations/severance obligations
May also be responsible for other Human Resource projects or assignments, either at the direction of the Director, Human Resources Acquisitions Integration, the Vice President of Human Resources, or as self-initiated audits, development of programs, materials or automation to improve acquisition integration efficiency, accuracy, costs, and/or improved legal compliance. Actively participate in annual strategic planning process to identify such projects, then create and execute plans to ensure on-time completion of deliverables

QUALIFICATIONS:

Must possess one or more of the following:
Associate’s degree in Business Administration, Human Resources, or related field
High school diploma or equivalent with a minimum of two (2) years of progressively responsible human resources or administrative experience
Must possess a minimum of three (3) years of administrative experience
Must have experience and aptitude to maintain large volumes of information in a highly organized and efficient manner, keeping excellent records, and demonstrated ability to speak knowledgably in detail on current and prior projects in a timely manner when needed
Working knowledge of employment laws at the state and federal level
Must be highly organized, with the ability to track, audit, report on and present data, material, statuses and projects in a confident, accurate and efficient manner
Demonstrated ability to work collaboratively with others within an organization, peer to peer and with more senior leaders, including the ability to lead and manage the work of others (non-direct reports) in support of project goals, to ensure timelines are met and objective are achieved
Working knowledge of HRIS and payroll systems, employee data management, and experience managing employee data, including effective audit procedures and report writing/analysis
Demonstrated ability to be very customer-service oriented and interact with all levels of individuals in a courteous and professional manner at all times
Must possess an energetic and focused personality with a demonstrated ability to take initiative and successfully handle and prioritize multiple competing assignments and effectively manage deadlines
Must be able to demonstrate professionalism, be articulate, and able to use good independent judgment and discretion
Ability to maintain information in a strictly sensitive manner
Outstanding verbal and written communication skills
Demonstrated ability to create effective written materials, including presentations, and the ability to effectively convey significant changes to employees in a positive and effective manner
Willingness and ability to travel approximately 5 - 10% of the time, including internationally as may be required
Experience working in multi-state operations in the service industry and/or organizations with high-volume, entry-level hourly workforce
Experience with acquisitions and mergers (due diligence through acquisition planning and integration)
Experience processing acquisition related retention and separation agreements, including calculating severance payments
Experience working with highly sensitive and information

BENEFITS:

Salary range: $80,000 - $90,000 per year
Medical, dental, vision, basic life, AD&D, and disability insurance
Enrollment in our company’s 401 (k) or Supplemental Income Plan, subject to eligibility requirements
Eight paid holidays annually, five sick days, and four personal day
Vacation time offered at an accrual rate of 3.08 hours biweekly. Unused vacation is only paid out where required by law.

#LI-26

Allied Universal® is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race/ethnicity, age, color, religion, sex, sexual orientation, gender identity, national origin, genetic information, disability, protected veteran status or relationship/association with a protected veteran, or any other basis or characteristic protected by law. For more information: www.aus.com

If you have difficulty using the online system and require an alternate method to apply or require an accommodation, please contact our local Human Resources department. To find an office near you, please visit: www.aus.com/offices.

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