Company Overview

For 30 years, clients in the private and public sectors have relied upon SOS International LLC (SOSi) for critical operations in the world’s most challenging environments. SOSi is privately held, was founded by its current ownership in 1989, maintains corporate headquarters in Reston, VA, and specializes in providing logistics, construction, training, intelligence, and information technology solutions to the defense, diplomatic, intelligence and law enforcement communities.

All interested individuals will receive consideration and will not be discriminated against on the basis of race, color, religion, sex, national origin, disability, age, sexual orientation, gender identity, genetic information, or protected veteran status. SOSi takes affirmative action in support of its policy to advance diversity and inclusion of individuals who are minorities, women, protected veterans, and individuals with disabilities.

5-190606-9103: Information Security Specialist
LocationU.S. - Virginia - Chantilly
Open Date6/6/2019

STG, an affiliated company of SOS International LLC (SOSi), is seeking a Information Security Specialist in Chantilly VA.  The ideal candidate will possess experience in Computer Network Defense (CND) applications and systems.

Essential Job Duties


  • Knowledge and experience with information network security equipment.
  • Understanding of information network threats such as computer viruses.
  • Tests and operates firewalls, intrusion detection systems, enterprise anti-virus systems and software deployment tools.
  • Safeguards the network against unauthorized infiltration, modification, destruction or disclosure.
  • May research, evaluate, test, recommends communicate and implement new security software or devices.
  • Implements, enforces, communicates and develops security policies or plans for data, software applications, hardware, and telecommunications.
  • Provides information to management regarding the negative impact caused by theft, destruction, alteration or denial of access to information.
  • Provides recommendations on information assurance engineering standards, implementation dependencies, and changing information assurance related technologies.
  • Expertise with COTS cybersecurity tools including at least one of the following: HBSS (McAfee endpoint suite), ACAS (Tenable/Nessus), SIEM technologies, RSA Archer, Redseal, and FireEye host/network security products.

Minimum Requirements

  • Security Clearance: TS/SCI CI Poly
  • Education: BS
  • Experience: Experience in a related security technology or discipline such as Identity and Access Management, Cybersecurity Operations, Cybersecurity Engineering, IT Security Audit, and Information Assurance
  • IAT II certification (Security+CE, CCNA Security, SSCP) desired






  • Work environment is normal for office setting