ISSE - (Polygraph Required)

BTI360; Chantilly (VA); On-site; USD 90,000 - 120,000; Full time

Benefits offered by this job

Fully paid healthcare premiums

Performance bonuses

Tuition Reimbursement

5 weeks PTO plus holidays

401K matching

Job summary

BTI360 is seeking an ISSO to ensure software systems meet security and compliance requirements. You’ll guide development teams, serve as a bridge between stakeholders, and ensure systems align with security protocols.

The ideal candidate will have an active TS/SCI with Polygraph, experience in A&A, and a strong understanding of security controls and cloud security. Full-time teammates enjoy great benefits including healthcare premiums and competitive salaries.

Qualifications

• Proven experience supporting the A&A of systems in the Sponsor environment.
• Deep understanding of security controls and documentation for ATO submissions.
• Familiarity with cloud security architectures and controls (AWS preferred).

Responsibilities

• Lead/support the Authorization & Accreditation process for software systems.
• Collaborate with engineering teams to design secure systems.
• Prepare and maintain security documentation.

Skills

Active TS/SCI with Polygraph

Collaboration skills

Cloud security architecture

Communication skills

Security certifications

Tools

Nessus

Rapid7

WebInspect

AppDetect

Nipper

Job description

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.

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
• Familiarity with Sponsor-specific tooling including Nessus, Rapid7, WebInspect, AppDetect, and/or Nipper
• Experience with containerized deployments, Infrastructure-as-Code (IaC), or automated compliance tooling
• Security certifications such as CISSP, CAP, or AWS Security Specialty
• Experience with continuous ATO (cATO) processes, FedRamp, or other relevant compliance pipelines

BTI360 Benefits For Full-time Teammates

• Fully paid healthcare premiums
• Competitive salaries and performance bonuses
• Career development and in-house training
• Tuition Reimbursement
• Up to 5 weeks PTO plus 2 weeks of federal holidays
• 401K dollar for dollar matching up to 6% annually -vested immediately on day 1
• Giving Back: Serving communities locally and across the globe
• Social Events (happy hours, golf tournament, BTI360 Family Festival and more)

Commitment to Fairness and Inclusion

At BTI360, we believe that unlocking the potential of others is not just a mission—it's the heart of our culture. We are committed to fostering an inclusive environment where every individual can grow each day, lead with humility, and do the right thing. Our core values guide us in developing software that makes a difference, primarily serving national security customers in the Washington, DC metropolitan area.

We are an Equal Opportunity Employer. We do not discriminate against any employee or applicant based on race, color, religion, gender, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other legally protected characteristics. We celebrate fairness and are dedicated to creating an environment of mutual respect and inclusion where everyone can bring their true selves to work.

Join us in a workplace where your contributions are valued, your growth is encouraged, and your potential is unlocked. Together, we develop great software fast and deliver exceptional solutions for our customers.