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ISSE - (Polygraph Required)

BTI360 Agency

BTI360 is a software engineering company that focuses on developing software engineers in a Lean Agile environment to build mission-critical production applications for clients requiring security clearances.

BTI360 is the employer — EngRadar is a job radar, not a recruiter. We track this posting from their own careers page and send you straight there; we never handle applications or CVs.

Herndon,VA & Chantilly, VA Posted 13d ago
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About the Team

Here at BTI360, we’ve built a culture that’s passionate about developing software engineers. Software doesn't build itself. People do.  In fact, teams of people do.  That's why our primary focus is on developing better craftsmen, better teammates, and better technical leaders.  By putting people first, we're not just giving our teammates more opportunities to grow, we're also raising the bar of the software we ship. BTI360 previously has been voted 10 years in a row as a TOP Place to Work by the Washington Business Journal. 

BTI360 is looking to add an ISSE to our team! As an ISSE at BTI360, you’ll play a mission-critical role ensuring our software systems meet security and compliance requirements. You will guide development teams through the A&A process from design through deployment. You’ll serve as a bridge between technical teams, security stakeholders, and accrediting authorities, helping all parties navigate requirements and deliver secure, mission-ready solutions.

What you will do in this role:

  • Lead or support the Authorization & Accreditation (A&A) process for multiple software systems 
  • Interpret and apply Sponsor-specific security requirements, policies, and control frameworks (based on NIST and Sponsor overlays) 
  • Collaborate with engineering teams early in the development lifecycle to design systems that meet security, compliance, and mission needs 
  • Prepare and maintain security documentation
  • Guide teams through the accreditation process, ensuring documentation and system posture align with Sponsor expectations 
  • Interface directly with Information System Security Managers (ISSMs), Authorizing Officials (AOs), and security stakeholders 
  • Provide security engineering input on architecture, data flows, boundary protections, and cloud configurations 
  • Champion secure development practices and influence teams to make thoughtful tradeoffs between risk, performance, and agility 
  • Track security posture and coordinate ongoing security monitoring, updates, and control implementation as systems evolve 
  • Lead briefings/meetings with the Sponsor

Minimum Requirements to be Considered for this Role:

  • Active TS/SCI with Polygraph required at time of application
  • Proven experience supporting the Authorization & Accreditation (A&A) of [Insert classification level] systems in the Sponsor environment 
  • Deep understanding of security controls, risk assessments, and documentation required for ATO submissions 
  • Strong collaboration skills and the ability to partner with software engineers, architects, and mission stakeholders 
  • Familiarity with cloud security architectures and controls (AWS preferred)
  • Excellent communication skills and comfort engaging with both technical and non-technical audiences 

You may excel in this role if you have the following skills:

  • Experience accrediting systems at higher classification levels 
  • Background in software engineering, DevSecOps, or IT systems engineering
  • Familiarity with ICD 503, RMF, and Sponsor-specific overlays 

Posted by BTI360 on their own careers page — you apply directly, no recruiter in between. View original / apply →

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