HR Administrator

SOSi•Reston, VA

2d•Hybrid

About The Position

Ready to be the heartbeat of an HR team that moves fast, cares deeply, and makes a real difference for every employee — from day one? At SOSi, our people are our mission. As our HR Administrator, you'll shape how every new hire experiences joining this company, champion the programs that keep our team engaged and recognized and be the trusted go-to resource employees turn to when it matters most. We're a team that embraces smarter ways of working: we expect you to bring curiosity and confidence in applying AI tools to streamline the manual, repetitive work that has historically defined HR administration — so you can spend more of your energy on the human side of HR. If you're organized, energized by variety, love being the person who makes things happen, and are excited about working at the intersection of people and technology, this role was built for you.

Requirements

Two+ years in an HR coordination or administrative role.
Demonstrated ability to apply AI tools (such as Microsoft Copilot, ChatGPT, or similar) to automate routine tasks, synthesize information, and improve process efficiency.
Sharp attention to detail and sound, independent judgment.
Enthusiasm, drive, and energy for growth.
Excellent written and verbal communication skills.
Proven ability to manage competing deadlines in a fast-paced environment.
Proficiency in Microsoft Office Suite.
Absolute discretion with sensitive and confidential information.
Experience with HR or talent management platforms.
Background supporting government, defense, or large-scale service contracts.

Responsibilities

Manage full recruiting administration, including posting and monitoring requisitions in the ATS, generating offer letters, and owning pre-employment documentation.
Leverage AI-assisted tools to accelerate drafting, tracking, and reporting across recruiting workflows.
Manage the onboarding experience for new hires, guiding them through the SOSi SPARK program, leading orientation sessions, and ensuring compliance documentation (I-9 and E-Verify) is completed.
Maintain accurate employee data and personnel files in HR systems, applying AI-driven auditing and data hygiene practices.
Manage the HR inbox, incoming mail, employment verifications, and unemployment claims using smart triage and templating tools.
Process purchasing requests.
Participate in HR-led employee communication efforts in SOSi Scope reports and oversee HR content on SOSi Connect.
Support the Total Rewards team with compensation actions, track performance dates, and create job codes in UKG.
Assist with Defense Base Act claims administration.
Oversee areas supporting Talent Development, such as the SOSi Education Reimbursement program.
Bring employee recognition programs to life, including the SOSi High Five Awards.
Coordinate global engagement initiatives defined in SOSi IGNITE.