HR & Office Manager

Advanced Infrastructure Design, Inc. (AID); Hamilton (NJ); On-site; USD 80,000 - 105,000; Full time

Benefits offered by this job

401(k) matching

Dental insurance

Health insurance

Paid time off

Vision insurance

Job summary

Advanced Infrastructure Design, Inc. (AID) is seeking an experienced HR & Office Manager to lead HR strategy and oversee day-to-day operations in our Hamilton, NJ office.

This full-time onsite role reports to the President and collaborates with senior leaders to strengthen the organizational structure and foster a productive workplace. You will drive full-cycle recruiting, onboarding, employee relations, benefits coordination, and HR compliance, while maintaining audit-ready records and

Qualifications

• Minimum 5–10 years of progressive HR experience, including generalist or business partner roles.
• Strong knowledge of employee relations, performance management, and HR compliance.
• Excellent organizational and time management skills with the ability to manage priorities.
• Excellent interpersonal and communication skills across all levels of the organization.
• High discretion handling sensitive information and familiarity with HRIS/ADP.

Responsibilities

• Lead full-cycle recruiting, including sourcing, interviewing, and partnering with managers on selections.
• Manage onboarding programs end-to-end to ensure a high-quality new hire experience.
• Serve as trusted advisor on employee relations, coaching, and conflict resolution.
• Administer benefits, compensation support, performance reviews, and engagement initiatives.
• Ensure compliance with federal, state, and local employment laws and maintain audit-ready records.
• Oversee office operations, vendor relationships, and administrative systems for efficiency.

Skills

HR leadership

Employee relations

Recruiting

Onboarding

Performance management

Compliance

Organizational skills

Communication

Discretion

MS Office

Tools

HRIS

ADP

Job description

Benefits

• 401(k) matching


• Dental insurance


• Health insurance


• Paid time off


• Vision insurance

Advanced Infrastructure Design, Inc. (AID) is a leading and rapidly growing consulting engineering firm. For over 25 years, AID has been at the forefront of assessing and evaluating our nation’s aging infrastructure. With an established and expanding presence in the Northeast and Mid-Atlantic regions, AID has cultivated a strong team of engineers and researchers. We offer professional services that directly assist in providing sustainable solutions to maintain and expand our infrastructure in a state of good repair.

• Non-destructive testing and evaluation (NDT/E) of highway, airfield, port, rail, and vertical infrastructure


• Pavement evaluation and design


• Pavement and asset management


• Unmanned Aircraft Systems (UAS) mapping


• Geotechnical design and subsurface investigation


• Subsurface and utility mapping


• Transportation materials testing & lab services


• Tunnel inspection


• Forensic studies


• Research on transportation infrastructure

The HR & Office Manager serves as both a strategic HR partner and the leader of day-to-day office operations. This role is responsible for driving core human resources functions including employee relations, performance management, and compliance, while ensuring that office operations and administrative systems run efficiently and professionally.

Reporting directly to the President, this individual works closely with leadership to strengthen organizational structure, support managers, and foster a productive, well-run workplace. This is a highly visible role with broad impact across the organization.

Key Responsibilities

Human Resources Leadership

• Lead full-cycle recruiting, including sourcing, interview coordination, and partnering with hiring managers on selection decisions


• Manage onboarding programs end-to-end, ensuring a consistent and high-quality new hire experience


• Serve as a trusted resource to managers on employee relations matters, including performance management, coaching, and conflict resolution


• Administer HR programs including benefits coordination, compensation support, performance review cycles, and employee engagement initiatives


• Ensure compliance with federal, state, and local employment laws (including FLSA, FMLA, ADA, EEOC)


• Maintain accurate, organized, and audit-ready employee records and HR documentation

Office & Operations Management

• Oversee day-to-day office operations, facilities, and administrative functions to maintain a professional and efficient work environment


• Manage vendor relationships, service contracts, and office-related expenses with a focus on quality and cost control


• Serve as the primary point of contact for office and facility-related matters, ensuring timely resolution


• Maintain document management systems, templates, and shared files to ensure organization, accessibility, and compliance


• Analyze workflows and implement process improvements to enhance operational efficiency and consistency


• Prepare reports, presentations, and data analysis using ERP, HRIS, and other internal systems

Additional Responsibilities

• Support internal committees and employee engagement initiatives


• Promote a safe, organized, and well-maintained workplace environment


• Partner with leadership on special projects and evolving business needs

Knowledge, Skills, & Abilities Required

• Minimum of 5–10 years of progressive HR experience, including experience in an HR generalist or business partner capacity


• Demonstrated experience with employee relations, performance management, and HR compliance


• Strong organizational and time management skills with the ability to manage competing priorities


• Excellent interpersonal and communication skills, with the ability to work effectively across all levels of the organization


• High level of discretion and ability to handle sensitive and confidential information


• Familiarity with HRIS and applicant tracking systems (ADP experience a plus)


• Advanced proficiency in Microsoft Office products including Outlook, Word, Excel, and PowerPoint required


• Experience preparing reports, spreadsheets, and presentations for management


• Working knowledge of applicable employment law (FLSA, FMLA, ADA, EEOC) required


• SHRM Certification preferred

Work Environment & Schedule

This is a full-time, onsite position based in Hamilton, NJ. While flexibility may be available, the role requires a consistent in-office presence to effectively support both employees and operations.