Senior HR Generalist

Hiring a Senior HR Generalist (Part-Time)!

Job Description

This part-time Senior HR Generalist / Human Resources Manager role serves as the primary HR resource for a growing U.S. operation. You will partner closely with leadership and employees to lead employee relations, ensure HR compliance, support performance management, administer policies, and manage day-to-day people operations. This is a hands-on, standalone HR position where you work independently, provide practical guidance to managers, and create a positive employee experience while maintaining strict compliance with federal, state, and local employment laws.

Responsibilities

• Serve as the primary HR point of contact for employees and managers, leading all employee relations activities and handling workplace issues and concerns.
• Provide guidance and coaching to managers on performance management, corrective actions, conflict resolution, and day-to-day people management.
• Ensure compliance with federal, state, and local employment laws and regulations across all HR processes, policies, and practices.
• Develop, implement, and maintain HR policies, procedures, and the employee handbook, ensuring they are current, compliant, and clearly communicated.
• Manage the full employee lifecycle, including onboarding, orientation, integration, and offboarding, ensuring a consistent and positive employee experience.
• Administer HR programs such as benefits, leave of absence management, performance reviews, and employee engagement initiatives.
• Maintain accurate and confidential HR records, employee files, and documentation in alignment with legal and company standards.
• Oversee HR operations, including HRIS administration, HR data accuracy, and HR reporting and analytics to support business decisions.
• Support workforce planning, organizational development efforts, and change management initiatives in partnership with leadership.
• Provide HR guidance on organizational changes, restructuring, and people-related decisions, balancing business needs with employee impact.
• Coordinate with payroll and benefits providers as needed to support compensation administration, payroll coordination, and benefits administration.
• Support recruiting and talent acquisition activities, including job postings, interview coordination, and onboarding preparation.
• Lead and support employee engagement, culture-building, and employee experience initiatives to foster a positive and inclusive work environment.
• Manage leave of absence processes, including FMLA, ADA, workers compensation, and other LOA programs, ensuring compliance and effective communication.
• Identify opportunities for process improvement within HR operations and implement best practices to increase efficiency and consistency.
• Act as an independent HR leader and trusted advisor to employees and leadership, operating effectively as an HR department of one.
• Collaborate with U.S. and international stakeholders to align HR practices and support global or international employees as needed.
• Prepare and maintain HR reports, metrics, and analytics to monitor trends and support strategic HR and business decisions.

Essential Skills

Strong employee relations expertise, including conflict resolution, performance management, and manager coaching.

Deep knowledge of U.S. employment law and multi-state HR compliance at the federal, state, and local levels.

Broad HR generalist experience across onboarding, offboarding, benefits administration, employee lifecycle management, and HR operations.

Proven ability to lead HR functions independently, including policy development, employee relations, and workforce planning.

Strong business partnership, communication, and relationship-building skills, with experience handling sensitive employee matters and advising leadership.

Work Environment

This role follows a hybrid work model based in Naperville, with an expectation of working on-site three days per week. The position offers a flexible part-time schedule that supports strong work-life balance while allowing you to remain engaged in a strategic and impactful HR leadership role. You will operate as the primary HR leader and trusted advisor with high visibility and direct access to decision-makers, collaborating closely with both U.S. and international stakeholders. The environment is collaborative and business-focused, where HR is viewed as a strategic partner and you have autonomy to shape processes, influence culture, and improve HR practices across the organization.

Job Type & Location

This is a Contract to Hire position based out of Naperville, IL.

Pay and Benefits

The pay range for this position is $75000.00 - $80000.00/hr.

Individual compensation offered for this position within this range will depend on many factors, including qualifications, skills, relevant experience, job knowledge, geographic location, internal equity, and other pertinent job-related factors.

Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following: Medical, dental & vision Critical Illness, Accident, and Hospital 401(k) Retirement Plan Pre-tax and Roth post-tax contributions available Life Insurance (Voluntary Life & AD&D for the employee and dependents) Short and long-term disability Health Spending Account (HSA) Transportation benefits Employee Assistance Program Time Off/Leave (PTO, Vacation or Sick Leave)

Job Type & Location

This is a Contract to Hire position based out of Naperville, IL.

Application Deadline

This position is anticipated to close on Oct 26, 2026.

Workplace Type

This is a hybrid position in Naperville,IL.

About Aston Carter

Aston Carter provides world-class corporate talent solutions to thousands of clients across the globe. Specialized in accounting, finance, human resources, talent acquisition, procurement, supply chain and select administrative professions, we extend the capabilities of industry-leading companies. We draw on our deep recruiting expertise and expansive network to meet the evolving needs of our clients and talent community with agility and excellence. With offices across the U.S., Canada, Asia Pacific and Europe, Aston Carter serves many of the Fortune 500. We are proud to be a ClearlyRated Best of Staffing® Platinum Award winner for both client and talent service.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

If you would like to request a reasonable accommodation, such as the modification or adjustment of the job application process or interviewing process due to a disability, please email astoncarteraccommodation@astoncarter.com for other accommodation options.

San Francisco Fair Chance Ordinance: Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.

Massachusetts Lie Detector: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Use of Artificial Intelligence (AI): We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.