HR Admin & Onboarding Specialist

Gtsc; Chantilly (VA); On-site; USD 42,000 - 62,000; Full time

Benefits offered by this job

15 days PTO

11 federal holidays

Medical, Dental, Vision, Life, and Dis

HSA and FSA

Travel assistance program

Pet insurance

Job summary

GTSC seeks an Administrative Assistant for its Chantilly, Virginia headquarters HR office. The HR Assistant provides administrative support across the Human Resources department, assisting with day-to-day HR activities, employee communications, benefits administration, onboarding and offboarding, HR systems and records, and compliance tracking.

The role involves collaborating with the HR team and supporting multiple projects and stakeholders, requiring strong organization, adaptability, and

Qualifications

• High school diploma or GED required.
• 1-2 years of administrative assistant experience with diverse tasks.
• Strong organizational skills and ability to manage multiple deadlines.
• Proficiency in Microsoft Office suite (Outlook, Word, Excel, PowerPoint, Teams).
• Strong written and verbal communication with accuracy and timeliness.
• Ability to handle confidential information discreetly.
• Ability to communicate with employees, managers, vendors and stakeholders.
• Ability to work independently and in HR team context.

Responsibilities

• Provide day-to-day administrative and operational support to the HR department.
• Monitor HR inboxes and respond to routine inquiries or route to HR team.
• Assist with onboarding and offboarding activities and related communications.
• Process routine HR transactions and data changes in HR systems.
• Assist with employment verifications and HR documentation requests.
• Assist with I-9 verification and E-Verify processing and records.
• Prepare HR correspondence using templates and guidance.
• Maintain electronic personnel records and filing in HR systems.
• Support benefits invoice reconciliation and validate eligibility.
• Track completion of corporate, compliance, and training requirements.
• Assist with tracking performance reviews and recurring HR processes.
• Maintain HR trackers, spreadsheets, calendars, and reports.
• Assist with HR audits and records maintenance.
• Support distribution of HR announcements and internal communications.
• Assist with HR projects by organizing materials and coordinating with stakeholders.
• Maintain confidentiality of employee and company information.
• Perform other duties as assigned.

Skills

High organization

Multiple projects

Microsoft Office

Communication

Discretion

Independent work

Education

High school diploma or GED

Tools

Outlook

Word

Excel

PowerPoint

Teams

Job description

GTSC seeks an Administrative Assistant for its Chantilly, Virginia headquarters HR office. The HR Assistant provides administrative support across the Human Resources department, assisting with day-to-day HR activities, employee communications, benefits administration, onboarding and offboarding, HR systems and records, and compliance tracking.

The role involves collaborating with the HR team and supporting multiple projects and stakeholders, requiring strong organization, adaptability, and