Senior Field Support Engineer - Enterprise IT Leader

FREDERICK T. JOHNSTON

Northfield, MN 612-***-**** ***********@*****.***

www.linkedin.com/in/fredjohnston-engineer

PROFESSIONAL SUMMARY

Strategic IT Systems Engineer and Infrastructure Leader with over 28 years of experience driving technical excellence across fast-paced enterprise and hybrid environments. Expert in architecting, securing, and maintaining core infrastructure: Windows Server, Active Directory/Entra ID, VMware vSphere virtualization, and multi-site networking. Proven track record of aligning technology operations with business priorities, collaborating with executive leadership to implement proactive system enhancements, high-availability architectures, and rapid root-cause remediation. CORE COMPETENCIES

• Enterprise Infrastructure & Systems: Windows Server (2012R2-2022), Active Directory/GPO, VMware vSphere/ESXi, Hyper-V, SAN/NAS Storage, Enterprise System Imaging.

• Cloud & Identity Architecture: Microsoft 365, Entra ID (Azure AD), Hybrid Identity Sync, Cloud Security Protocols, Intune / Endpoint Management.

• Network Operations & Hardware: Cisco & Fortinet Firewalls/Switches, VLAN Segmentation, Routing, VoIP Telephony, Fiber/Copper Infrastructure, Eaton/APC UPS Power.

• Security, Compliance & Continuity: Backup & Disaster Recovery (Veeam, Datto), Root-Cause Analysis (RCA), Role-Based Access Control (RBAC), Technical Documentation.

• IT Operations & Vendor Management: MSP Multi-Client Support (Tier 2/3), Incident Management, SLA Governance, Technical Project Leadership. PROFESSIONAL EXPERIENCE

Corsica Technologies Senior Systems Engineer / Tier 3 Escalation Lead (February 2025

- March 2026)

• Elevated MSP Service Reliability: Resolved complex Tier 2/3 infrastructure escalations across a multi-client Managed Service Provider footprint, significantly optimizing enterprise server uptime, storage performance, and endpoint security.

• Accelerated Hybrid Cloud Migrations: Spearheaded hybrid Active Directory/Entra ID integrations, streamlined Windows Server provisioning, and enforced rigorous firewall security policies adhering to strict compliance benchmarks.

• Optimized Operational Workflow: Authored comprehensive standard operating procedures (SOPs) and mentored support engineering staff, successfully reducing escalation dependency on senior engineering resources by 25%. Lifetouch Senior Systems & Electronic Infrastructure Specialist (July 2021 - December 2024)

• Eliminated Recurring System Failures: Executed rigorous root-cause analysis

(RCA) to diagnose and permanently resolve complex hardware, OS, and software failures across mission-critical processing and production environments, effectively eradicating downtime.

• Streamlined Enterprise Deployments: Partnered cross-functionally with software engineers, DBAs, and field operations to accelerate system updates, patch deployments, and hardware performance tuning.

Bailiwick Deployment Support Engineer 2 (September 2020 - July 2021)

• Ensured 100% Scope Compliance: Validated scope-of-work compliance and rapidly resolved high-priority network and systems hurdles during large-scale enterprise deployments across Fortune 500 corporate and retail sites.

• Executed Zero-Outage Cutovers: Collaborated with project leaders and field technicians to deliver seamless switch, router, and server cutovers without a single minute of site downtime.

Retail Tech, Inc. Integration Technician 3 / Systems Staging Specialist (August 2019 - August 2020)

• Staged Multi-Site Infrastructure: Configured, imaged, and validated enterprise network switches, firewalls, routers, and virtualized endpoints across distributed multi-site customer environments.

• Mitigated Business Disruption: Orchestrated emergency hardware restorations, thin-client provisioning, and structured cabling diagnostics to safeguard against critical operational outages.

National Service Center (NSC) Field Systems & Infrastructure Technician 2 (July 2015 - March 2019)

• Managed Distributed Fleet Operations: Delivered rapid onsite diagnostics, OS imaging, server migrations, and hardware rebuilds across widespread enterprise accounts.

• Upheld Strict SLAs: Directed parts logistics and technical deployments to maintain maximum system availability across distributed client footprints. Macy's Systems and Technology Technical Operations Lead / Field Infrastructure Engineer (December 2007 - May 2014)

• Directed Regional Infrastructure: Led regional store technology infrastructure, directing Cisco switch stack configurations, IDF/MDF closet buildouts, and physical connectivity across a 7-year tenure.

• Spearheaded Enterprise Rollouts: Orchestrated hardware deployments for back- office server clusters, POS systems, and telemetry infrastructure while designing and delivering training programs for field technical staff. General Dynamics Systems Engineer (Contractor) (March 2006 - April 2007)

• Secured Defense Infrastructure: Delivered high-level system configurations, secure workstation/server deployments, and advanced hardware troubleshooting within a strictly compliant, high-security defense contractor environment. EDUCATION & CREDENTIALS

• Associate of Applied Science: Information Technology Brown College (2002)

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