Cloud Solutions Architect

Castalia Systems • Arlington, TX

1d • Onsite

About The Position

Castalia Systems is supporting a U.S. Government customer to provide support for onsite incident response to civilian Government agencies and critical asset owners who experience cyber-attacks, providing immediate investigation and resolution. Contract personnel perform investigations to characterize the severity of breaches, develop mitigation plans, and assist with the restoration of services. Castalia is seeking a Cloud Solutions Architect to support this critical customer mission.

Requirements

• Bachelor's degree in Computer Science, Engineering, or related field (or equivalent experience)
• 5+ years of experience designing cloud architectures, preferably on AWS
• 8+ years of directly relevant experience
• Strong expertise in AWS services including EC2, S3, VPC, IAM, Lambda, and CloudFormation
• Experience with infrastructure-as-code tools (Terraform, CloudFormation, etc.)
• Deep understanding of cloud security best practices and compliance requirements
• Proven ability to design scalable, resilient, and cost-effective solutions
• Strong documentation and technical communication skills
• Experience with automation and scripting (Python, Bash, PowerShell)

Nice To Haves

• TS/SCI preferred
• AWS Certified Solutions Architect – Professional
• Experience designing solutions for cybersecurity or incident response operations
• Knowledge of multi-cloud or hybrid cloud architectures
• Experience with Splunk
• Experience migrating on-prem legacy systems to a cloud environment
• Experience with Azure and Entra
• Experience with container orchestration (Kubernetes, ECS)
• Familiarity with federal compliance frameworks (FedRAMP, NIST)
• Background in system administration or DevOps

Responsibilities

• Design, optimize, and enhance cloud-based architectures to support ESS operational requirements.
• Creating scalable, secure, and high-performance solutions that enable rapid deployment and customization of engagement infrastructure across diverse mission scenarios.
• Lead planning and implementation for migration of on-prem capabilities into the AWS cloud.
• Customize capabilities to align with engagement scope, technical, and operational parameters.
• Develop automation frameworks to streamline provisioning and deployment processes.
• Create and maintain infrastructure-as-code templates and documentation.
• Ensure architecture supports rapid reconfiguration for dynamic mission needs.
• Implement security controls including encryption, namespace obfuscation, and hardened configurations.
• Collaborate with DevOps engineers to enhance CI/CD pipelines.
• Evaluate and recommend new cloud services and technologies to improve operational capabilities.
• Conduct architecture reviews and provide technical guidance to implementation teams.
• Support troubleshooting of complex architectural issues during active operations.

Benefits

• Medical, dental, vision coverage
• 401k matching
• generous PTO
• paid holidays
• professional training opportunities
• pet insurance

What This Job Offers

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