Yusniel Ruiz · Senior Network & Systems Engineer · Miami, FL
15+ years designing, securing, and automating enterprise networks and cloud identity — across healthcare, finance, legal, and education.
01 / About
15+ years of hands-on expertise across enterprise networking, cloud identity, security, and automation — proven across 50+ production environments and roughly 500 endpoints, spanning HIPAA-aligned healthcare, financial, legal, and education clients.
02 / Skills
03 / Experience
Built and launched the company's internal sales/booking platform, replacing manual workflows. Owned technology and vendors for a 50+ person operation.
Designed and managed servers, networks, and cybersecurity for 10+ businesses. Built a SaaS service-management platform and led a six-person technical team.
Designed, implemented, and administered servers, Active Directory, LAN/WAN networks, VPNs, firewalls, and critical infrastructure.
B.S. Telecommunications & Electronics Engineering, 2010 — Graduated with Honors
Universidad Central "Marta Abreu" de Las Villas, Cuba
Spanish — Native
English — Professional Proficiency
04 / Work
Selected engineering and automation work delivered in production environments.
Production workflows integrating Microsoft 365, Autotask, Zoom, and security platforms — sign-in monitoring, alert routing, and license reporting.
~5 engineer-hours recovered per week
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Hardened Microsoft 365 tenants across MFA, Conditional Access, device compliance, and identity protection; detected and contained token-theft attempts.
Two tenants hardened to HIPAA-aligned config
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Designed a 300+ user Ubiquiti/UniFi wireless network with AP placement and signal surveys, and a segmented guest/student/VoIP/corporate VLAN architecture.
Full campus network redesign, zero downtime
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Migrated four clients from Phone.com and OfficeRing to Zoom Phone — IVRs, queues, call routing, and number porting — and cut client mailboxes over from GoDaddy-hosted email to Microsoft 365.
4 phone systems + email retired/migrated
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Built and migrated a self-hosted CIPP multi-tenant management platform to Linux on Microsoft Azure, focused on reliability, maintainability, and secure administration.
Full control of the multi-tenant management stack
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More projects
Led migration of four clients from Sophos to UniFi and refreshed firewall hardware across the client base.
Standardized across 20+ environments
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On-premises virtualization platform on Proxmox, Linux, and Docker with segmented VLANs and dedicated backup infrastructure.
Enforced mgmt/prod/backup separation
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Custom package-management and operations platform structuring internal workflows and centralizing business information for an external client.
Manual processes replaced end-to-end
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Runs local AI workloads on Ollama and GPU-enabled infrastructure, supporting private AI services and AI-assisted automation.
Private, self-hosted AI stack in production
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Built a Zoom Team Chat bot wired into internal APIs so staff can pull operational stats on demand; extended it to validate suspicious-login IPs and auto-post confirmed results to the right channel.
Security alerts triaged automatically
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Built a pipeline that turns business call data into structured summaries and links calls to Autotask ticketing, cutting 5+ minutes of documentation from every ticket.
One-click call-to-ticket workflow
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Developed a centralized application for a 300+ user managed Chromebook environment, consolidating device and browser activity into one reporting view.
Security visibility across distributed endpoints
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