Senior Security Engineer

Overview DecisionPoint seeks a Senior Security Engineer to design and implement secure architectures, hardening baselines, and cybersecurity controls for enterprise cloud-hosted platforms supporting a federal and DoD-aligned mission environment. This senior technical role provides advanced security engineering, IL5-compliant control implementation, secure identity and access integration, STIG alignment, and vulnerability reduction across complex systems. The Senior Security Engineer supports system modernization, secure cloud adoption, continuous monitoring improvements, and enterprise cybersecurity strategy through engineering rigor, security testing, and expert technical guidance. This role ensures system confidentiality, integrity, and availability through proactive design and implementation of robust security controls and architectures. This position is fully remote. Duties & Responsibilities The Senior Security Engineer will: Design secure system architectures and cloud configurations in alignment with federal and DoD security requirements. Implement IL5 controls, security baselines, and environment hardening across systems, applications, and cloud resources. Apply STIG requirements and secure configuration checklists to cloud, OS, network, and application components. Support secure single sign-on (SSO) integration, identity federation, certificate management, and authentication workflows. Develop and maintain secure configuration baselines, encryption standards, and