Senior Systems Architect

About the role

Infomedia Americas (SimplePart) is seeking a Senior Systems Architect to lead the modernization of its infrastructure and cloud environment. Based in Atlanta, Georgia, this full-time position involves managing network architecture, cloud migration, and security across multiple data centers and cloud environments.

Responsibilities

• Own the design, implementation, and ongoing optimization of network architecture across all colocation sites and cloud environments.
• Architect and manage network segmentation, VLANs, VPN tunnels, routing, DNS, and DHCP across a geographically distributed infrastructure.
• Administer and optimize pfSense firewalls and Snort IDS/IPS, ensuring network integrity and compliance with segmentation requirements.
• Design hybrid connectivity solutions bridging on-premises datacenters and AWS as workloads migrate.
• Evaluate and recommend cloud-native replacements for on-premises services across compute, storage, networking, and monitoring.
• Architect infrastructure to support the modernization of SimplePart’s application stack and data platform, including migration from legacy systems.
• Establish infrastructure-as-code practices (Terraform, CloudFormation, or equivalent) and cloud operational standards.
• Serve as a primary technical resource for PCI DSS 4.0 audit readiness and ongoing compliance across all applicable requirements.
• Support ISO 27001 compliance maintenance and contribute to SOC 2 certification efforts.
• Ensure cryptographic standards, access controls, and segmentation testing meet current compliance requirements.
• Maintain detailed documentation for network diagrams, system designs, configurations, and compliance artifacts.
• Drive technical decision-making and build a culture of documentation, automation, and continuous improvement.
• Collaborate cross-functionally with development, product, and executive leadership on modernization planning and roadmap execution.

Requirements

• 7+ years of experience in systems engineering, infrastructure architecture, or a similar senior technical role.
• Demonstrated experience planning and executing datacenter-to-cloud migrations for production workloads.
• Broad hands-on experience across AWS core services: VPC, EC2, ECS/EKS, RDS/Aurora, S3, IAM, Route 53, Direct Connect/Transit Gateway, and CloudWatch.
• Experience designing AWS security and compliance controls using native services such as GuardDuty, Security Hub, Config, CloudTrail, and KMS, including in PCI DSS-regulated environments.
• Strong firewall management experience and working knowledge of IDS/IPS systems.
• Hands-on experience with Windows Server environments, Active Directory, IIS, and Group Policy at scale.
• Advanced PowerShell scripting for automation, system administration, and infrastructure management.
• Experience with virtualization platforms (Proxmox, Hyper-V, or VMware).
• Working knowledge of PCI DSS compliance requirements and audit processes.
• Demonstrated ability to mentor and elevate a technical team.
• Strong documentation practices and ability to communicate architectural decisions to technical and non-technical audiences.