Senior Human Resources Administrator

Career Area: Corporate
City: Herndon
State: Virginia
Country: United States
Job Description



In an ever-changing and complex world, security concerns are paramount. Enhanced security requires education, training and specialized skills. Constellis provides end-to-end risk management and comprehensive security solutions to safeguard people and infrastructure globally. Our team of strategic problem solvers has a steadfast moral compass and unwavering dedication to creating a safer world. Constellis is committed to the success of our customers and partners.




This position is responsible for performing HR-related administrative duties and works closely within HR to support general HR operations.



  • Ensure successful completion of onboarding of new hires in tracking completion of required employee documents and new hire tasks (I-9, Policy Acknowledgements, etc.)
  • Process Onboarding Forms to ensure new hire access and accounts are created
  • Works closely with other departments to ensure a smooth onboarding experience for new hires; Act as a liaison between new hires and IT to schedule shipping/pick-up of equipment as well as Security to schedule badge appointments for new hires reporting to an office location
  • Send New Hire Checklists and Transfer Checklists for completion when necessary
  • Maintain and update electronic employee files
  • Assist in processing employee changes in the system
  • Generate and send employee correspondence
  • Maintain and update electronic employee files
  • Assist in processing employee leave of absences in the HRIS system
  • Coordinate New Hire Orientation and administer on a biweekly basis
  • Monitor HR tickets and assist in resolving routine employee issues
  • Create and run various reports, as requested, in the HRIS system
  • Maintain confidentiality of all employee information and records
  • Other duties as assigned


  • High school education or equivalent required
  • 2 years administrative or office work, preferably in Human Resources
  • Proficiency with MS Office
  • Strong attention to detail and organizational skills
  • Effective oral and written communication skills.
  • Ability to adapt to a rapidly changing, fast paced environment
  • Ability to work extended hours when needed



Constellis protects critical priorities safely and efficiently around the world. Operating globally and based in the Washington D.C. area, our employees bring unparalleled dedication and passion for creating a safer world and upholding the highest standards of compliance, quality and integrity. As a leading global provider of risk management, security, humanitarian, training and operational support services to government and commercial customers worldwide, Constellis’ forward thinking solutions include a range of synergistic services, including background investigations, social intelligence tools, advanced training, logistics and life support, UAV and K9 services, and crisis response mitigation. At Constellis, our number one priority is to secure success for our customers. For more information, visit www.constellis.com




Constellis offers a comprehensive, total rewards package that includes competitive compensation and a flexible benefits package that reflect its commitment to creating a diverse and supportive workplace. 

  • Medical, Vision & Dental Insurance
  • Paid Time-Off Program & Company Paid Holidays
  • 401(k) Retirement Plan
  • Insurance: Basic Life & Supplemental Life
  • Health & Dependent Care Flexible Spending Accounts
  • Short-Term & Long-Term Disability
  • Personal Development & Learning Opportunities
  • On-the-job Training, Skills Development & Certifications
  • Employee Referral Program
  • Corporate Sponsored Events & Community Outreach



Work is typically based in a busy office environment and subject to frequent interruptions. Business work hours are Monday-Friday from 8:00 am to 5:00 pm, however some extended or weekend hours may be required. 




May be required to lift and carry awkward items weighing up to 25 lbs. Requires intermittent standing, walking, sitting, squatting, stretching and bending throughout the workday. 


Constellis and its affiliated companies are equal opportunity employers. All applicants receive consideration without regard to race, color, sex, sexual orientation, gender identity, age, ethnicity, religion, national origin, disability, veteran status or any other characteristic prohibited by federal, state, or local law.