Sentar is seeking a Subject Matter Expert III - Information Systems Security Engineer in Arlington, VA or Mechanicsburg, PA! **This position is contingent upon contract award ** **Role Description:** The Subject Matter Expert III is key personnel serving as the lead Information Systems Security Engineer (ISSE). The role is the lead technical authority for designing, building, and sustaining DSCA's layered security automation architecture in AWS infrastructure provisioning, configuration management, Policy-as-Code compliance validation, and orchestration and for translating DoW regulatory requirements into functional, automated, operational code. **Qualifications:** **Clearance Level: Secret** **Education: ** - Bachelor's degree from an accredited institution in Information Technology, Computer Science, Engineering, or a related technical discipline. **Certifications**: AWS Certified DevOps Engineer • Professional; AWS Certified Solutions Architect • Professional; AWS Certified Security • Specialty; or (ISC)2 CISSP, preferably with an engineering or architecture concentration (ISSEP/ISSAP). **Experience: ** - Twelve (12) years of demonstrated experience in systems engineering and cybersecurity, with at least seven (7) of those years focused on security automation, cloud engineering, and architecture. - Five (5) years of demonstrated experience serving as a lead technical authority on enterprise-level projects, responsible for designing and implementing security solutions, not just assessing them. - Five (5) years of demonstrated experience translating complex regulatory requirements (RMF, NIST, DISA STIGs) and architectural diagrams into functional, automated, and operational code. **Benefits at Sentar: ** Our unique employee ownership model attracts top talent, giving employees the freedom to take initiative and drive meaningful improvements. In addition to cultivating a thriving and inclusive work environment, Sentar offers an extensive benefits package designed to support the well-being of employees and their families. Employee ownership is the foundation of our culture, promoting participation, teamwork, and accountability while ensuring long-term financial security and a commitment to excellence. - Voluntary Medical, Dental, Vision, with Flexible Spending Plan options - Voluntary Life, Critical Illness, Accident, and Long Term Care insurance options - Group Term Life, Short-Term and Long-Term Disability is provided by Sentar to all qualifying employees - Generous 401(k) match - Competitive PTO plan that graduates quickly with years of service - Other leave programs; holiday schedule along with bereavement, maternity, jury and military duty - Tuition reimbursement - Professional development reimbursement - Recognition and Awards programs If you are not ready to apply for this position, **submit your resume here to join our talent community** **.** We'll keep you updated occasionally on new job opportunities.