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HR Administrator (Part Time)

OESC (Oneida ESC Group)
Milwaukee, WI Part Time
POSTED ON 5/28/2026
AVAILABLE BEFORE 6/12/2026
Description

Wholly owned by the Oneida Nation of Wisconsin, Oneida ESC Group (OESC) is a holding company that provides a consistent, cost-effective common management platform supporting our family of companies united under common ownership.

Oneida ESC Group has its roots in engineering, science, and construction. We are a family of tribally-owned diversified subsidiaries. We deliver Environmental Services, Engineering and Design Services, Construction Services, and Technical and Professional Services to government agencies and commercial customers worldwide. With strong technical and project management capabilities, we integrate innovation, experience, and dedication into every project that is supported by a diversity in our services and unity in our strengths.

Oneida ESC Group has an immediate opening for a Part-Time Temporary HR/Accounting Administrator. This position will be based on-site at our current Milwaukee HQ (1033 North Mayfair Road, Suite 200, Wauwatosa, Milwaukee, WI 53226). This is a temporary role from June through September, working approximately 20 hours per week.

Key Responsibilities

  • Support a large-scale file scanning initiative to digitize and organize employee records by converting physical documents into HRIS system.
  • Assist with preparation and organization of an upcoming office move.
  • Maintain accurate and confidential employee records in compliance with data protection requirements.
  • Assist Accounting team with general administrative tasks, including data entry and reconciliation support.

Requirements

Minimum Qualifications:

  • Strong organizational skills and high attention to detail
  • Ability to handle sensitive information with a high level of confidentiality
  • Proficiency in Microsoft Office (Excel and Outlook preferred)
  • Strong data entry skills and comfort working with large volumes of documentation

Compensation: $20/Hour for ~20 Hours Per Week

About Us

The Oneida ESC Group is a family of companies owned by the Oneida Nation of Wisconsin that delivers customer-focused engineering, science, and construction services worldwide.

Our Family Of Companies Includes

  • Oneida ESC Group (OESC)
  • Oneida Professional Services (OPS)
  • Oneida Total Integrated Enterprises (OTIE)
  • Mission Support Services (MS2)
  • Sustainment & Restoration Services (SRS)
  • Oneida Engineering Solutions (OES)
  • General Mechanical Corporation (GMC)
  • LG2 Environmental Solutions (LG2)
  • Oneida Environmental (OE)

We integrate our staff for dedicated, cooperative, and business-like delivery of services to enhance our customers’ missions.

Equal Employment Opportunity

Oneida ESC Group is an equal opportunity employer committed to inclusion and diversity in the workplace. We take affirmative action to ensure equal opportunity for all applicants without regard to race, color, religion, sex, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws, national origin, disability, veteran status, or other legally protected characteristics.

Oneida ESC Group participates in the E-Verify program. Learn more about the E-Verify program. https://www.e-verify.gov/

Oneida ESC Group is committed to working with and providing reasonable accommodation to applicants with physical and mental disabilities.

This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation, and training. Oneida ESC Group makes hiring decisions based solely on qualifications, merit, and business needs at the time.

Salary : $20

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