Senior Computer Systems Engineer/Architect

About

TENAX Technologies seeks a Senior Computer Systems Engineer/Architect to support a DoD customer in designing, securing, and modernizing enterprise and mission systems. The role provides technical leadership across systems architecture, AWS cloud environments, cybersecurity (RMF), and infrastructure integration in classified, mission-critical settings.

Key Responsibilities

• Lead design and integration of secure enterprise architectures across on-premises and AWS cloud environments (hybrid/cloud-native)
• Architect and manage AWS services including EC2, S3, VPC, IAM, RDS, CloudWatch, and Lambda, ensuring secure and scalable deployments
• Implement cloud security best practices aligned with DoD Cloud SRG, RMF, and Zero Trust principles
• Perform systems engineering lifecycle activities (requirements, design, integration, testing, sustainment)
• Integrate cybersecurity tools and processes including:
  • ACAS (Nessus), HBSS/endpoint security, and SIEM solutions
  • STIG/SRG compliance and vulnerability remediation
  • Development of ATO artifacts (SSP, SAR, POA&M)
• Design and support DevSecOps pipelines and CI/CD workflows, including automation and Infrastructure as Code (IaC)
• Oversee integration of compute, storage, virtualization (VMware/Hyper-V), identity management (AD/RBAC), and backup solutions
• Provide technical leadership and architecture governance, supporting design reviews, risk assessments, and modernization strategies
• Develop and maintain architecture documentation, system diagrams, and configuration baselines

Required Qualifications

• Active Top Secret clearance with SCI eligibility (TS/SCI preferred)
• Bachelors degree in a technical field (or equivalent experience)
• 10+ years of experience in systems engineering or architecture
• Experience with:
  • AWS cloud services and secure cloud architecture
  • DoD RMF and ATO processes
  • Enterprise infrastructure (Linux/Windows, virtualization, storage, networking)
  • STIG implementation and cybersecurity compliance

Desired Qualifications

• AWS Certified Solutions Architect (Associate or Professional)
• DoD 8570/8140 IAT/IAM Level II certification (e.g., CISSP, CASP+)
• Experience with Zero Trust Architecture, containerization (Docker/Kubernetes), and DevSecOps
• Prior support to DoD/Navy/Army environments (e.g., NAVSEA, NSWCPD, ARL)

Core Competencies

• Enterprise and cloud architecture design
• Cybersecurity integration and compliance
• DevSecOps and automation
• Technical leadership in classified environments