Senior IT Engineer

A2e Technologies•San Diego, CA

About The Position

Senior IT Engineer to play a key role on our IT Team in the design, deployment, maintenance, and security of our infrastructure. Senior IT Engineer to play a key role on our IT Team in the design, deployment, maintenance, and security of our infrastructure. Minimum Requirements but not limited to: 8+ years hands-on experience across: Azure AD, Intune, Active Directory, Exchange, virtualization platforms such as Proxmox, and enterprise networking. . Excellent Problem solving abilities Can operate independently, Mentor junior staff, and help modernize and secure IT systems while supporting business operations.

Requirements

8+ years of hands-on experience in a senior IT or systems engineering role.
Strong experience with:
Azure AD / Entra ID
Microsoft Intune
Active Directory (on-prem and hybrid)
Exchange / Exchange Online
Experience with virtualization platforms (Proxmox strongly preferred; VMware/Hyper-V acceptable).
Solid understanding of TCP/IP networking, firewalls, VPNs, and DNS.
Strong troubleshooting skills across systems, networking, and identity.
Ability to work independently and manage multiple priorities.

Nice To Haves

Experience with:
Proxmox clustering, ZFS, and backup strategies
Linux server administration (Debian/Ubuntu preferred)
Scripting and automation (PowerShell, Bash, Python)
Endpoint security and MDM hardening
Familiarity with compliance frameworks (CMMC, NIST, SOC 2, ISO).
Microsoft certifications (Azure, M365, Security) or equivalent experience.
Experience modernizing legacy environments or migrating to cloud services.

Responsibilities

Systems & Identity Management
Administer and maintain Azure Active Directory (Entra ID), including user lifecycle management, Conditional Access, MFA, and role-based access control (RBAC).
Manage on-prem Active Directory, including Group Policy, DNS, DHCP, and hybrid AD configurations.
Administer Microsoft Intune for device management (Windows, macOS, mobile), including compliance policies, configuration profiles, and application deployment.
Manage Exchange Online / Exchange hybrid environments, including mail flow, security, retention, and troubleshooting.
Infrastructure & Virtualization
Design, deploy, and maintain virtualization environments, including Proxmox VE (VMs, LXC containers, backups, clustering, storage).
Manage storage solutions (local, SAN/NAS, ZFS, backups, snapshots, replication).
Monitor system performance, capacity, and availability; proactively resolve issues.
Networking
Configure and support enterprise networking environments, including:
Switching and routing (VLANs, trunking, STP)
Firewalls and VPNs (site-to-site and remote access)
Network security best practices
Troubleshoot complex network connectivity and performance issues.
Security & Compliance
Implement and maintain security best practices across endpoints, servers, and identity platforms.
Support compliance initiatives (e.g., CMMC, SOC 2, ISO 27001, or similar).
Manage patching, vulnerability remediation, endpoint protection, and logging.
Participate in incident response and root cause analysis.
End-User & Operational Support
Serve as an escalation point for complex technical issues.
Maintain the ticketing system and work issues as they arrive within SLA.
Create and maintain documentation for systems, procedures, and configurations.
Assist with training and support for end users.
Work closely with vendors and security consultants as needed.