Senior Systems Architect

Senior Systems Architect

Atlanta, Georgia

About SimplePart

SimplePart, part of Infomedia's global automotive SaaS platform, operates approximately 2,750 dealer websites across 25+ OEM catalogs. Our parts e-commerce solutions serve dealership networks globally, processing transactions across multiple payment integrations in a PCI DSS-regulated environment.

The Opportunity

The SimplePart product is entering an exciting modernization phase. As the Sr. Solutions Architect, you will design and build SimplePart's AWS platform from the ground up, defining the target-state architecture, establishing infrastructure-as-code foundations, and leading the migration of workloads from four colocation datacenters into a modern, scalable, and compliant cloud environment.

You'll own the architectural vision end-to-end: compute, networking, data, security, and observability. You'll work closely with development, product, and executive leadership to ensure the cloud platform supports a modernized application stack while meeting compliance requirements.

Beyond the build, you'll serve as a technical leader, mentoring engineers, setting cloud engineering standards, and helping shape the direction of SimplePart's infrastructure organization through a multi-year transformation. There will be some necessary work to support networking upgrades on the current platform to maintain stability during the migration timeframe.

Key Responsibilities

Cloud Architecture & Migration (Primary Focus)

• Design the target-state AWS architecture for SimplePart's e-commerce platform, encompassing compute, networking, storage, data services, and security controls.
• Define and implement the cloud landing zone: account structure, VPC design, network segmentation, identity and access management, and connectivity back to on-premises datacenters during the transition period.
• Architect migration pathways for workloads currently running across four colocation datacenters (Atlanta, Portland, Amsterdam, London).
• Establish infrastructure-as-code practices using the most appropriate platform as the standard for all cloud provisioning.
• Design cloud-native replacements for on-premises services including compute, database, caching, messaging, and monitoring.
• Architect hybrid connectivity solutions (Direct Connect, Site-to-Site VPN) to bridge on-premises and cloud environments during the parallel-run migration period.
• Define and enforce cloud operational standards: tagging, cost management, deployment pipelines, environment promotion, and disaster recovery.
• Security, Compliance & Governance in AWS
• Design the cloud security architecture to meet PCI DSS 4.0 requirements, including network segmentation, encryption at rest and in transit, logging, and access controls.
• Architect AWS environments to support ISO 27001 compliance maintenance and SOC 2 certification.
• Implement security tooling and practices in AWS: GuardDuty, Security Hub, Config, CloudTrail, WAF, and KMS.
• Ensure the cloud architecture supports audit evidence generation, vulnerability scanning integration, and compliance reporting.
• Define and document cloud security standards, runbooks, and architecture decision records.

Technical Leadership

• Serve as the senior technical authority on cloud architecture decisions, setting standards and patterns for the modernization program.
• Mentor and develop team members in cloud engineering practices through hands-on guidance and knowledge sharing.
• Drive a culture of documentation, automation, and continuous improvement across the infrastructure team.
• Collaborate cross-functionally with development, product, and executive leadership on modernization planning, roadmap execution, and trade-off decisions.
• Produce and present architectural documentation, diagrams, and decision records for technical and executive audiences.

Legacy Environment Support

• Some support will be needed on the existing stack during the migration period, specifically to assist with a network upgrade.
• Windows Server (2016–2022), Active Directory, IIS, and Group Policy across a multi-datacenter footprint.
• pfSense firewalls with Snort IDS/IPS, Cloudflare WAF and proxy configurations.
• SQL Server replication, federation, and high-availability patterns.
• Proxmox virtualization environments.

Required Qualifications

• 7+ years of experience in infrastructure or cloud architecture, with at least 3 years focused on designing and building production AWS environments.
• Deep AWS expertise across core services: VPC, EC2, ECS/EKS, RDS/Aurora, S3, IAM, CloudFormation/Terraform, Route 53, Direct Connect, and CloudWatch.
• Demonstrated experience designing and executing datacenter-to-cloud migrations for production workloads.
• Strong infrastructure-as-code skills (Terraform preferred) with experience establishing IaC practices in an organization.
• Hands-on experience designing cloud architectures that meet PCI DSS compliance requirements.
• Deep understanding of cloud networking: VPC design, segmentation, Transit Gateway, load balancing, DNS, and hybrid connectivity.
• Experience with CI/CD pipelines and deployment automation in cloud environments.
• Experience with cloud cost optimization, FinOps practices, and reserved capacity planning.
• Background in e-commerce, SaaS, or multi-tenant platform environments.
• Strong documentation practices and ability to communicate architectural decisions to both technical and executive audiences.
• Demonstrated ability to lead, mentor, and elevate a technical team through a significant transformation.
• Bachelor's degree in Computer Science, Information Technology, or related field, or equivalent professional experience.