Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

HR Administrator

SOS International LLC

Founded in 1989, SOSi is among the largest private, founder‑owned technology and services integrators in the defense and government services industry. We deliver tailored solutions, tested leadership, and trusted results to enable national security missions worldwide. Job Description 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. What you’ll do Hit the ground running managing our full recruiting administration — posting and monitoring requisitions in the ATS, generating offer letters, and owning pre‑employment documentation with precision. You’ll leverage AI‑assisted tools to accelerate drafting, tracking, and reporting across these workflows, cutting cycle times without sacrificing accuracy. You’ll be the architect of an onboarding experience that sets new hires up for success: guiding employees through the SOSi SPARK program, leading orientation sessions and making sure every piece of compliance documentation — including I‑9 and E‑Verify — is buttoned up. Beyond onboarding, you’ll keep the engine running across a wide range of HR operations — and you’ll look for every opportunity to make those operations faster and more consistent through intelligent automation: Maintain accurate employee data and personnel files in HR systems, applying AI‑driven auditing and data hygiene practices to reduce manual error. Manage the HR inbox, incoming mail, employment verifications, and unemployment claims — using smart triage and templating tools to handle volume efficiently. Process purchasing requests. Actively participate in HR‑led employee communication efforts in SOSi Scope reports, and oversee HR content on SOSi Connect. Support our Total Rewards team through compensation actions, track performance dates, and create job codes in UKG. Assist with Defense Base Act claims administration. Oversee various areas supporting Talent Development such as our SOSi Education Reimbursement program. You’ll also play a visible, high‑impact role in our people culture — bringing employee recognition programs to life, including the SOSi High Five Awards, coordinating the global engagement initiatives defined in SOSi IGNITE, and being the kind of HR professional employees genuinely trust working with. Qualifications What you bring 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. Additional Information The environment This is a fast‑paced, dynamic office where no two days look the same — and where a willingness to continuously improve how work gets done is just as valued as getting it done. Hybrid work schedule with 2 days in office and 3 days of remote work. Working at SOSi All interested individuals will receive consideration and will not be discriminated against for any reason. #J-18808-Ljbffr

Vacancy posted 2 days ago
Similar jobs that could be interesting for youBased on the HR Administrator in Reston, VA vacancy
  •  ...Join us and be a part of our dynamic team, where your skills and ambitions will be nurtured and valued. Position Summary The HR Administrator supports daily Human Resources operations, including employee records management, onboarding, new hire orientations, payroll administration... 
    Suggested
    Work at office

    Benchmark Utility Services

    Sterling, VA
    2 days ago
  •  ...highest levels of services to provide tangible value and create sustainable results for our clients. Overview The HR Assistant provides foundational administrative support across multiple Human Resources functional areas. This entry-level role assists HR personnel with... 
    Suggested
    Contract work

    Golden Key Group

    Reston, VA
    4 days ago
  • $23 - $25 per hour

     ...Job Title: HR Assistant Location: Reston, VA (Fully on-site) Industry: Consulting Type: Contract (3-4 months) Pay: $23 - $25 / hour...  ...their HR team. This role involves handling a wide variety of administrative HR tasks, scheduling, and managing onboarding/offboarding processes... 
    Suggested
    Contract work
    Work at office
    Local area

    Addison Group

    Reston, VA
    3 days ago
  • $175k - $225k

     ...and facilitating the planning and day-to-day execution of core HR processes and you will partner with leadership to attract and retain...  ...with brokers, insurance carriers, and third-party administrators. Talent Management & Succession Planning: Support enterprise... 
    Suggested
    Work experience placement
    Worldwide

    HawkEye 360

    Herndon, VA
    3 days ago
  • $140k - $150k

     ...ensures policies and practices are compliant and risks are mitigated appropriately. Oversees the execution of key Human Resources administrative functions including benefits administration, leave management, onboarding, offboarding, and employee documentation. Supports... 
    Suggested
    Contract work
    For contractors
    Interim role
    Work at office
    Local area
    Flexible hours

    IsI Enterprises LLC

    Reston, VA
    2 days ago
  • $80k - $90k

     ...Manager | 100% Onsite | Hospitality Industry Job Details Salary: $80,000 - $90,000 per year. Key Responsibilities Develop and execute HR strategies aligned with overall business and operational objectives. Lead recruitment, selection, onboarding, and orientation... 
    Local area

    Jobot

    Herndon, VA
    1 day ago
  • Cooper's Hawk Winery and Restaurants in Reston is seeking a Manager of Team Member Experience. In this role, you’ll shape the team member journey—from hiring to talent development—creating a supportive and engaging work environment. You will lead initiatives that ensure...

    Cooper's Hawk Winery and Restaurants

    Reston, VA
    4 days ago
  •  ...Administrative Assistant Serves as administrative assistant to a principal or administrator of an elementary, nontraditional, or special education center/school; relieves supervisor of routine administrative tasks and ensures smooth and efficient operation of the assigned... 
    Work at office

    Fairfax County Public Schools

    Reston, VA
    22 hours ago
  •  ...Description SAIC is looking for an HR Business Partner to join our team! In this role, you will be responsible for the delivery of HR strategies, solutions, and services that align with the business priorities and goals for a portfolio of programs. The HRBP will develop... 
    Contract work
    Temporary work

    SAIC

    Reston, VA
    1 day ago
  •  ...The Human Resources Business Partner (HRBP) acts as a strategic advisor to business leaders, aligning HR strategies with operational and organizational goals. The role provides full‑cycle HR support to one or more operating companies, with a strong focus on employee relations... 
    Work at office
    Local area

    Solutions Driven

    Reston, VA
    4 days ago
  •  ...senior leaders and functional stakeholders to deliver high‑impact HR solutions across culture, talent, performance, and...  ...execution of core HR programs, including compensation, benefits, leave administration, employee relations, investigations, performance management, recognition... 
    For contractors
    Work at office
    Local area

    Chugach Government Solutions, LLC

    Reston, VA
    4 days ago
  •  ...Senior HR Manager Location: Herndon, VA Position: Full-Time Salary: ($Best Possible) The Senior Manager of HR is part of the Executive...  ...and counsel on employee relations issues. Participate in administrative and relevant staff meetings when needed. Qualifications 10+ years... 
    Full time
    Temporary work
    Work at office
    Flexible hours

    TWO95 International

    Herndon, VA
    3 days ago
  •  ...Company. Primary Responsibilities Maintain day to day benefits administration and employee inquiries Oversee and execute new hire orientation...  ...Business Administration, or related field 3-5 years of experience in HR Knowledgeable of the HR requirements for a mid-sized government... 
    For contractors
    Local area

    Core One

    Sterling, VA
    4 days ago
  • $20 per hour

     ...supports more than 35 units across Mason by delivering comprehensive HR guidance and responsive service/support. Partnering with Mason'...  ...of recruitment and onboarding of new employees, general HR administrative tasks and support, records management, assisting with policy... 
    Hourly pay
    Part time
    Work experience placement
    Work at office
    Monday to Friday

    George Mason University

    Fairfax, VA
    4 days ago
  •  ...and detail-oriented Human Resources Assistant to support daily HR operations, recruiting, onboarding, employee documentation, and...  ...helping verify and update employee records. Assist with HR administrative tasks, employee requests, forms, notices, and documentation... 
    Full time
    Work at office

    Talent Connect Now

    Chantilly, Loudoun County, VA
    2 days ago
  •  ...Position Summary The Human Resources Assistant will provide administrative and organizational support to the Human Resources department...  ..., employee file maintenance, data entry, and daily HR operations while ensuring employee records remain accurate,... 
    Work at office

    Talent Connect Now

    Ashburn, VA
    4 days ago
  • $55k - $60k

     ...HR Assistant Why This Opportunity Stands Out: Work directly with an experienced and supportive HR Manager Be part...  ...Costpoint Assist with onboarding and recruitingrelated administrative activity Ad hoc tasks and projects, as requested Qualifications... 
    Full time
    Immediate start

    Creative Financial Staffing

    Chantilly, Loudoun County, VA
    22 hours ago
  •  ...benefits, an Employee Stock Ownership Plan and more. Job Overview The HR Operations Admin is the operational backbone of the new hire...  ...questions and onboarding‑related inquiries. Employee Data & Administrative Transactions Process routine employee data updates in Workday... 
    Daily paid
    Full time
    Work at office
    Local area

    Rosendin Electric

    Sterling, VA
    2 days ago
  •  ...Resources Assistant Our company is in need of a self-motivated and experienced HR Assistant to support our busy HR department. The successful candidate will be responsible for providing administrative support for the department, assisting with the hiring process, scheduling... 
    Hourly pay

    Asiacom Americas

    Sterling, VA
    22 hours ago
  •  ...verifications. Facilitate communication between employees and HR team, act as a liaison between new hires and their leaders. Assist...  ...HR team member. Assist with office mail, scans, and other administrative tasks. Support HR team with all internal and external HR related... 

    Teleworld Solutions

    Chantilly, Loudoun County, VA
    1 day ago
  •  ...care, and conduct regular project site visits. Qualifications Bachelor’s degree in Human Resources, Business Administration, or a related field. 3+ years of HR experience; construction industry experience preferred. Strong organizational, communication, and interpersonal... 
    Full time
    For contractors
    Work at office
    Night shift
    Afternoon shift

    Holder Construction

    Herndon, VA
    2 days ago
  • $80k - $110k

     ...Title: HR Generalist Location: Herndon, VA (Hybrid) The Opportunity We are looking for an experienced Human Resources Generalist...  ...such as performance management, policy compliance, benefits administration, and organizational culture. This position will also play a... 
    Work at office
    Local area

    Stillwater Human Capital LLC

    Herndon, VA
    4 days ago
  •  ...HR Generalist The HR Generalist will serve as a key member of the human resources team, supporting a broad range of HR functions including payroll support, benefits administration, recruiting coordination, employee relations, and HR systems management. This role is... 
    Work at office
    Local area

    Addison Group

    Reston, VA
    22 hours ago
  • $172.85k - $220.76k

     ...Services leads the strategy, delivery, and continuous improvement of HR operational shared services across the organization. This role...  ...Services teams, including HR Operations, Employee Services, HR Administration, HRIS support, and related functions. Establish service... 
    Work at office
    Local area
    Remote work
    Long distance

    Turner Corporation

    Reston, VA
    2 days ago
  •  ...is responsible for ensuring the timely execution of day-to-day HR professional and operational activities. This role is central to...  ..., from position acceptance through start date. Benefits Administration : Manages daily benefits operations, assists employees with enrollment... 
    Work at office
    Flexible hours

    Evolver Corporate

    Reston, VA
    6 days ago
  •  ...provide tangible value and create sustainable results for our clients. Overview The Human Resources Project Manager provide independent HR support and services in any HR functional area (e.g. staffing, classification, employee benefits, employee relations, information... 
    Contract work

    Golden Key Group

    Reston, VA
    3 days ago
  • $112.88k - $165.53k

     ...your career. Let’s see what we can achieve. Together. Summary The HR Compliance Manager leads the firm’s employment compliance...  ...Monitoring Oversee the development, implementation, and ongoing administration of mandatory HR compliance training programs, including harassment... 
    Work at office
    Local area
    Remote work
    Relocation
    Visa sponsorship
    Relocation package

    DLA Piper

    Reston, VA
    4 days ago
  •  ...The Senior HR Business Partner (HRBP) will work in a hybrid capacity out of our Herndon, VA HQ to execute our human capital strategy and align business objectives with employees and management for the designated business units (BUs) they support. This position serves... 
    Work experience placement
    Local area

    Deltek

    Herndon, VA
    4 days ago
  •  ...Contract Executive Coordinator The Contract Executive Coordinator will provide administrative support for Electrify America's Vice President of Operations, Vice President of Technology, and Vice President of Legal & Government Affairs. The ideal candidate will have... 
    Contract work

    Abacus

    Reston, VA
    4 days ago
  •  ...About the Role The Senior HR Generalist is a high‑breadth, execution‑oriented role that sits within the HRBP team at the intersection...  ...employee conversations and Performance Improvement Plan administration end‑to‑end: drafting, documentation, follow‑through, and outcome... 
    Flexible hours

    Seekr

    Reston, VA
    1 day ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to HR Administrator. Be the first to apply!