Circet USA · 17 hours ago
Infrastructure & Microsoft Cloud Platform Lead
Kennesaw, GA
Full-time
Onsite
Senior Level
7+ years expCircet USA is the leading provider of Network Services in North America, specializing in engineering and construction services. The Infrastructure Lead will be responsible for designing and implementing the Microsoft-based target architecture for the new IT environment, transitioning from legacy systems while overseeing infrastructure services and ensuring security and governance.
ConstructionInfrastructureTelecommunications
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
Qualification
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
Benefits
Medical, Dental, and Vision insurance
Digital Health & Wellness Support
Critical Illness, Accident, & Hospital Insurance
Short-term & Long-term disability
Group term & Voluntary life insurance
Flexible Spending and Health Savings Accounts
Paid Time Off & 401K
Company Discount Website
Company
Circet USA
Circet USA is a network services provider, with tailored services including the design, engineering, construction. It is a sub-organization of Circet.
1001-5000 employees
H1B Sponsorship
Circet USA has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (2)
2024 (1)
Funding
Current Stage
Late StageLeadership Team
Maddi Ohnstad
HR Business Partner
Recent News
2025-08-06
2025-08-04
Company data provided by crunchbase