Information Systems Security Engineer

Bespoke Technologies • Chantilly, VA

9d • Onsite

About The Position

BT-496 is a senior-level Information Systems Security Engineer role combining system engineering, information systems security engineering (ISSE), and data engineering. The engineer will design, secure, and optimize mission-critical cloud and data solutions, including work with classified AWS environments, advanced analytics, ETL and AI/ML data engineering, virtualization technologies, graph technologies, and modern software development practices. The role requires communicating complex concepts effectively to technical and nontechnical stakeholders.

The position is fully on-site in Chantilly, Virginia, with no remote option. An active Poly clearance is required; candidates without one will not be considered.

Requirements

• Active Poly clearance; applicants without an active Poly clearance will not be considered.
• Minimum experience and education combination: 8 years with a BS/BA, 6 years with an MS/MA, or 3 years with a PhD; each path requires at least 2 years of Sponsor experience. An additional four years of experience may be considered in lieu of a degree.
• Demonstrated experience designing, securing, and operating data flow solutions in high-security or classified environments.
• Strong ISSE background, including A&A/ATO, security architecture, vulnerability analysis, accreditation documentation, and continuous monitoring requirements.
• Hands-on experience with ETL pipelines, data modeling, activity modeling, and AI/ML-supportive data engineering.
• Proficiency in at least one programming language: Cypher, Python, Java, or JavaScript.
• Demonstrated experience cleaning, modeling, and visualizing medium to large datasets.
• Ability to communicate complex technical concepts clearly to technical and nontechnical audiences.
• Customer-specific experience supporting mission systems or classified programs.

Nice To Haves

• Experience with enterprise data strategy, data governance, stewardship practices, and metadata management.
• Experience developing dashboards or system visualizations.
• Exposure to AI/ML or LLM system engineering and data workflows.
• Familiarity with Agile development frameworks and cloud-native design patterns.
• Experience with graph database technologies, particularly Neo4j and Cypher query language.

Responsibilities

• Lead and execute ISSE activities throughout the system lifecycle, including security architecture development, security control selection and implementation, and compliance with NIST and customer-specific security requirements.
• Develop, maintain, and update A&A/ATO documentation, including SSPs, POA&Ms, test procedures, compliance evidence, and continuous monitoring artifacts.
• Conduct routine security scans and vulnerability assessments, perform patching and updates, and manage remediation workflows for cloud and on-premises systems.
• Integrate security-by-design principles into system architectures, data flows, ETL pipelines, and mission workflows.
• Partner with system engineers, developers, and mission customers to align technical solutions with accreditation requirements, classification constraints, and operational risk considerations.
• Design, build, and optimize ETL pipelines, including data flows supporting AI/ML/LLM projects and large-scale analytics.
• Perform functional and technical analysis, internal control and risk analysis, cost estimation, timeline assessments, and trade studies supporting mission solutions.
• Apply system engineering disciplines and concepts of operations across cross-organizational environments to ensure secure and scalable system design.
• Clean, preprocess, analyze, and visualize medium to large datasets using modern analytic and statistical methods.
• Build and optimize Neo4j graph database solutions, including schema design, relationship modeling, and efficient Cypher query development.
• Develop software components in Cypher, Python, Java, or JavaScript using secure development practices.
• Collaborate in Agile development frameworks and contribute to iterative planning, sprint activities, and CI/CD processes.
• Maintain documentation for datasets, queries, security artifacts, engineering decisions, and developed software components.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior