Mark Hashemi

Senior Systems Engineer Lead with 20+ years of experience designing, operating, and modernizing enterprise IT environments across multi-site and international organizations. Proven track record leading cloud and infrastructure operations across Windows and Linux systems, including hybrid Azure and AWS environments. Extensive experience supporting regulated environments requiring HIPAA, FedRAMP, and NIST compliance. Known for driving stability, scalability, and security through hands-on leadership, automation, and strategic infrastructure optimization that improves reliability, performance, and operational efficiency.

• Cloud Platforms: Microsoft Azure (IaaS, DRaaS, ASR), Amazon Web Services (AWS)   

• Operating Systems: Windows Server, Windows Workstation, Linux (Oracle/Red Hat/Ubuntu)   

• Virtualization: VMware, Hyper-V, XCP-ng

• Microsoft Ecosystem: Active Directory, Microsoft 365 (tenant-to-tenant and cross-tenant migrations using BitTitan MigrationWiz and ShareGate), Exchange, Failover Clustering, File Services, DFS Namespace, WSUS, RDS & RemoteApp, Intune

• Networking: Cisco Routing and Switching, VLANs, DNS, DHCP, PKI and SSL/TLS certificate lifecycle management, Zscaler, Cloudflare (DNS, Load Balancing, WAF), NetScaler, SonicWall Firewalls, VPNs

• Monitoring: Datadog, PRTG, Site24x7, Azure Monitor, AWS CloudWatch

• Security: Identity Management, Cisco Duo MFA, Vulnerability Management (OpenVAS, Nessus, Qualys, ManageEngine), Email Security, Advanced Spam Filters (Proofpoint, Barracuda, Mimecast), HIPAA, FedRAMP, NIST 800-53 Compliance   

• Storage & Backup: Pure Storage, SAN Architecture, Veeam Backup & Replication, Azure Site Recovery   

• Databases & Enterprise Applications: Microsoft Dynamics NAV, Oracle E-Business Suite, Oracle Hyperion, IBM Domino/Lotus Notes, Hospital Information Systems (HIS), Microsoft SQL Server, Oracle, MySQL, PostgreSQL

• Scripting & Automation: PowerShell, API integrations, RMM solutions   

• Hardware: Dell / HP Servers   

• Other: MDM, ITIL Foundation, ConnectWise Solutions (ScreenConnect, PSA, Automate)

Senior Systems and Network Engineer Lead | Caperion Solutions, Delray Beach, FL | April 2025 – Current

• Served as top-level escalation point for complex systems, network, and security issues across 150+ client environments nationwide, supporting organizations ranging from 50 to 200 users per client.

• Designed and implemented secure, scalable network and infrastructure architectures including multi-site VPNs, VLAN segmentation, failover strategies, and cloud-integrated environments.

• Led administration and optimization of Windows Server, Active Directory, Group Policy, and hybrid cloud integrations to improve reliability and operational consistency across diverse customer infrastructures.

• Managed and supported Microsoft 365, Azure, and Entra services, AWS workloads, and disaster recovery solutions across multiple production environments.

• Built, maintained, and optimized virtualized infrastructures using VMware and Hyper-V, improving system performance, availability, and resilience.

• Developed PowerShell-based automation and API-driven workflows to standardize operations, reduce manual effort, and improve response times.

• Created technical documentation, standards, and training materials, and delivered hands-on training to junior engineers to elevate team capability.

• Provided after-hours and emergency support during outages and critical deployments, acting as a trusted technical lead during high-impact incidents.

Systems Engineer Lead - Cloud Ops | DSS Inc., North Palm Beach, FL (Remote) | May 2020 – December 2024    

• Provided operational and technical leadership for cloud and infrastructure operations supporting 1,000+ users and approximately 3,000 servers nationwide across enterprise Windows and Linux environments.

• Led Cloud Operations initiatives ensuring performance, security, availability, and reliability of large-scale cloud, virtual, and on-premises infrastructure platforms.

• Directed and led cross-functional projects involving cloud migrations, new system deployments, infrastructure upgrades, and performance optimization initiatives across geographically distributed environments.

• Served as technical project lead, coordinating engineers, vendors, and stakeholders to deliver complex infrastructure projects on time and within scope.

• Designed, implemented, and maintained secure hybrid architectures leveraging Microsoft Azure, VMware, Hyper-V, and supporting enterprise infrastructure technologies.

• Acted as escalation authority during critical incidents and war-room situations, leading troubleshooting efforts to restore service and mitigate risk.

• Managed security operations including vulnerability management, patching strategies, and enforcement of controls aligned with HIPAA, FedRAMP, and NIST 800-53 requirements.

• Implemented and administered security and access control solutions including Cisco Duo MFA, Zscaler, WSUS, DFS, NetScaler, and SonicWall firewalls.

• Evaluated and introduced automation and emerging technologies to improve operational efficiency, reduce risk, and strengthen system resilience.

Senior Systems Engineer | Twin-Star International, Delray Beach, FL | May 2017 – May 2020

• Led modernization of multi-site enterprise infrastructure, including large-scale virtualization and cloud migration initiatives.

• Executed Hyper-V to VMware migration, consolidating the physical server footprint from 17 hosts to 6.

• Led migration from on-premises Exchange to Microsoft 365, improving availability and reducing operational overhead.

• Migrated business-critical workloads to Azure and implemented a hybrid cloud architecture.

• Developed a strategic roadmap for full headquarters infrastructure migration to the cloud.

• Upgraded storage platforms with Tier-0 SSD and flash caching to improve performance.

• Implemented new firewall solutions and managed IT infrastructure budgeting and cost optimization initiatives.

• Assessed and planned migration of Asia-based infrastructure to Azure regions (Singapore and Seoul) to reduce operational risk. 

IT Security Administrator | Minerals Technologies Inc., Bethlehem, PA | September 2015 – February 2017

• Supported enterprise identity, messaging, and financial systems including Active Directory, Exchange, Oracle E-Business Suite, Oracle Hyperion, and PeopleSoft.

• Managed access control workflows, authentication, and security approvals within a regulated corporate environment.

• Maintained enterprise email security and supported HR and financial system integrations.

Early Career - Systems Administration & Infrastructure Operations | Various Organizations | UAE & Australia | 2005 – 2015

• Progressed through systems administration and support roles in healthcare, enterprise, and commercial environments across the UAE and Australia.

• Administered and supported Active Directory, domain controllers, and core Windows infrastructure in multi-site environments.

• Supported Hospital Information Systems and clinical applications, including deployment of upgrades and maintenance of mission-critical systems.

• Led and coordinated help desk operations, including staff scheduling, on-call rotations, and workload assignments.

• Installed, configured, and maintained physical and virtual server environments, including VMware-based infrastructure.

• Designed and implemented backup and disaster recovery solutions to ensure system availability and business continuity.

• Implemented and supported firewalls, VPNs, and secure remote access solutions.

• Performed vulnerability assessments and security evaluations using tools such as OpenVAS.

• Developed technical documentation, system logs, and root cause analysis to support operational stability and incident resolution.

• Bachelor of Science in Computer Science

08/2006 - 6/2010  Abu Dhabi University - Abu Dhabi, UAE