Before School Oracle Cloud Infrastructure Architect Jobs in Decatur, GA

Job Summary:
Circet USA is a leading provider of telecommunications and data center infrastructure services in North America, seeking a talented Infrastructure Lead. This role is responsible for designing and implementing Microsoft-based target architecture, overseeing infrastructure services, and ensuring the effective operation of core IT infrastructure.
Responsibilities:
• Own the overall infrastructure strategy and roadmap (on-prem, cloud, network, storage, backup, endpoints) in alignment with business and security priorities.
• Define infrastructure standards, patterns, and best practices for availability, performance, security, and scalability.
• Own the Microsoft Cloud Adoption Framework (CAF) for Circet USA, including identity, networking, security, governance, landing zone design and platform automation aligned with Microsoft best practices.
• Apply the Microsoft Well-Architected Framework to platform and workload designs across security, reliability, cost optimization, performance, and operational excellence.
• Define and maintain Azure and Microsoft 365 architectural standards for all new workloads and acquisitions.
• Act as the primary infrastructure point of contact for IT leadership, security, applications, and business stakeholders.
• Provide technical leadership to a small team of engineers/administrators and any external partners, including informal mentoring and code/review of configurations.
• Architect and implement network, system, and cloud solutions, with a focus on Azure landing zones, virtual networks, subnets, firewalls, and hybrid connectivity.
• Build and manage Microsoft Azure IaaS and PaaS environments, including compute, storage, networking, and platform services.
• Define and implement Azure subscription and management group hierarchy, resource group standards, naming/tagging conventions, and Azure Policy baselines
• Implement and maintain core infrastructure services such as Active Directory/Microsoft Entra ID (including Conditional Access, MFA, device-based access controls, and application integrations), DNS, DHCP, certificates, and identity integrations.
• Lead infrastructure components of key projects (e.g., new site deployment, application rollouts, migrations, security initiatives).
• Perform advanced troubleshooting of infrastructure issues (network, servers, cloud resources, storage, backups) and drive problem resolution.
• Configure, monitor, and maintain systems, including patching, updates, capacity management, and performance tuning.
• Implement and operate monitoring, alerting, and logging tools; proactively address issues before they impact the business.
• Participate in and help define on-call rotations and incident response for critical infrastructure events.
• Work closely with security teams to implement and maintain security controls (hardening, firewalls, VPN, endpoint tools, identity & access).
• Design and operate backup, disaster recovery, and business continuity capabilities appropriate to the organization’s risk profile.
• Implement and operate Microsoft security platforms, including Defender for Cloud, Defender for Endpoint, Conditional Access, and Privileged Identity Management (PIM), in alignment with Zero Trust principles.
• Ensure infrastructure changes follow change management processes and are documented clearly and consistently.
• Contribute to and enforce infrastructure-related policies, standards, and procedures.
• Collaborate with application, data, and service desk teams to ensure infrastructure appropriately supports their needs and SLAs.
• Document architectures, runbooks, and troubleshooting guides; help build a knowledge base for the broader IT team.
• Identify opportunities for automation and process improvement (e.g., infrastructure-as-code, scripted deployments, standardized images).
• Adhere to, promote, and accept personal responsibility for compliance to: Federal and Local Occupational Safety and Health Regulations, Industry Consensus Standards, Circet USA Injury and Illness Prevention Program Manual.
• Participate in job site safety/hazard analysis.
Qualifications:
Required:
• 7+ years of experience in infrastructure engineering/administration roles, with increasing responsibility.
• Strong hands-on experience with networking and Azure networking (routing/switching, VLANs, VPN, firewalls, wireless).
• Azure landing zone design and deployment, including network architecture, security, and governance.
• Hands-on experience designing and deploying Azure Landing Zones, including network architecture, security, and governance, aligned with the Microsoft Cloud Adoption Framework.
• Deep hands-on experience designing and operating Microsoft Azure environments; exposure to other cloud platforms is a plus but not required.
• Microsoft 365 / Modern Workplace, including Entra ID, Intune, Exchange Online, SharePoint, Teams, and endpoint security.
• Core services such as Active Directory/Microsoft Entra ID, DNS, DHCP, certificates, file services.
• Experience designing and supporting highly available, secure, and scalable infrastructure environments.
• Demonstrated ability to own complex incidents end-to-end, from diagnosis through root cause analysis and remediation.
• Prior experience providing technical guidance or leading small teams (formal or informal).
Preferred:
• Experience in a greenfield, merger/separation, or rapidly changing IT environment where processes and standards had to be built from scratch.
• Familiarity with infrastructure-as-code and automation tools (e.g., PowerShell, Terraform, …).
• Exposure to security frameworks and practices (e.g., least privilege, zero trust, hardening guidelines).
• Experience working with ITIL-based processes (incident, problem, change) and ITSM tools.
Company:
Circet USA is a network services provider, with tailored services including the design, engineering, construction. It is a sub-organization of Circet. Founded in 2022, the company is headquartered in Faribault, USA, with a team of 1001-5000 employees. The company is currently Late Stage.