Senior System Architect (ECDS)

Job Description

Job Description

System Architect - Enterprise Cross Domain Systems (ECDS)

ABOUT US:

SITEC Consulting is seeking an experienced Cybersecurity Implementation Engineer to support the design, deployment, configuration, and sustainment of enterprise cybersecurity infrastructure across on-premises and cloud environments. This role is ideal for a hands-on cybersecurity engineer with strong Windows/Linux experience, cloud infrastructure knowledge, and the ability to support mission-critical security capabilities in a complex DoD environment.

In this position, you will help build and maintain cybersecurity applications and infrastructure, support cloud-based security implementations using services such as EC2, EBS, ELB, S3, and RDS , assist with technology upgrades and capability enhancements, and coordinate with stakeholders to support security assessments and authorization activities.

RESPONSIBILITIES INCLUDE:

• Build, deploy, configure, troubleshoot, and maintain cybersecurity infrastructure and applications across Windows and Linux environments.
• Engineer and implement cybersecurity solutions using cloud services, including provisioning AMIs, supporting software installations, and maintaining cloud-based resources.
• Research, evaluate, and support implementation of enterprise cybersecurity capabilities that align with customer mission objectives.
• Recommend technology upgrades and process improvements to enhance performance, standardization, security, and operational efficiency.
• Support hardware/software selection, implementation planning, and capacity considerations for current and future requirements.
• Develop and maintain architecture diagrams, technical documentation, test plans, and capability roadmaps.
• Coordinate with stakeholders, external assessors, and government partners to support security assessments, authorization processes, and technical exchanges.
• Support network configuration upgrades, additions, and revisions through testing, documentation, and customer approval processes.
• Serve as a technical lead or task lead when needed.

REQUIRED QUALIFICATIONS:

• Active TS/SCI clearance with ability to obtain a polygraph.
• 6+ years of related technical experience in network/cybersecurity engineering, preferably supporting large-scale enterprise or global networks in a DoD environment.
• Deep expertise in one or more cybersecurity technologies such as NDR, EDR, NGFWs, IDS/IPS, F5 platforms, or email/web security gateways , with working knowledge of additional cybersecurity tools or platforms.
• Strong understanding of cloud infrastructure, cybersecurity principles, compute, storage, and transport.
• Experience with Windows and Linux server operating systems.
• Ability to develop technical and analytical documentation and communicate effectively with senior and executive-level stakeholders.
• Ability to work independently with limited direction.
• Demonstrated experience supporting modernization of complex enterprise cybersecurity systems.
• DoD 8140.01 / 8570.01-M certification alignment for IAT Level III and IASAE Level II .
• Ability to obtain CSSP-Analyst certification within 120 days of start date .

PREFERRED QUALS:

• AWS cloud infrastructure or cloud security implementation experience.
• Experience supporting security assessments, authorization processes, RMF/ATO activities, or external assessor coordination.
• Experience developing architecture diagrams, capability roadmaps, test plans, or implementation documentation.
• Experience supporting cybersecurity infrastructure upgrades in classified or mission-focused environments.