We are seeking a reliable, detail-oriented Human Resources Assistant to support the day-to-day administrative and operational needs of our Human Resources team. This role works closely with the Senior Human Resources Manager and requires a highly collaborative, team-oriented individual who enjoys working in partnership with others. This role is ideal for someone who thrives in structured, task-oriented work and takes pride in organization, accuracy, and follow-through.

This is a part-time, onsite benefits eligible position (20 hours/week) based in Arlington, MA.

Essential Functions and Responsibilities:

• Support onboarding and offboarding processes, including coordinating headshots and bios, initiating background checks, and assisting with scheduling across the administrative team
• Coordinate performance management processes, including launching, tracking, and peer feedback
• Assist with annual compliance training tracking and organization
• Update employee records, including data entry and document organization
• Handle sensitive information with discretion and professionalism
• Provide general administrative support to the HR team
• Perform other administrative duties as assigned

Success Factors/Job Competencies:

• Highly organized and detail-oriented
• Strong sense of accountability and follow-through
• Collaborative and team-oriented
• Comfortable in a structured, support-focused role
• Able to build positive working relationships across teams

Physical Demands and Work Environment:

• Physical Demands: While performing the duties of this job, the employee is often required to walk, sit, drive a vehicle, use hands to type, handle or feel objects, reach with hands and arms, bend, walk up and downstairs, talk, hear, and see
• Work Environment: Most work is performed inside of the office setting

• 3+ years of administrative or HR support experience 
• Experience with Paylocity or a similar HRIS system
• Proficiency in Google Workspace
• Strong organizational skills and attention to detail
• Ability to manage multiple tasks and follow through consistently
• Strong written and verbal communication skills
• Professional, dependable, and able to handle confidential information
• Comfortable working within established processes and systems
• Associate’s degree or higher 

Desired Qualities: 

• Experience in HR and/or healthcare or mental health settings
• Experience in a high-volume administrative support role