Systems & Network Engineer

Bobby Abellana

Field Engineer & Infrastructure Lead — I build, secure, and automate the infrastructure businesses run on.

Open to new roles · San Jose / Bay Area 8+ yrs infrastructure & security CompTIA certified B.S. Cybersecurity
Bobby Abellana
01

Who I am

Senior systems and network engineer with 8+ years across multi-client MSP operations — infrastructure architecture, virtualization, networking, and security operations. I currently serve as the dedicated infrastructure architect for a Tier-1 Silicon Valley venture capital firm and as infrastructure lead for multiple high-growth startups, several of which I’ve carried from 10 to 100+ employees while holding 100% network uptime. I’ve been the lead local technical resource during two security breach investigations. I like the hard, end-to-end problems: design the network, virtualize the servers, automate the boring parts, and lock it all down.

02

The stack I work in

◆ Cloud & Identity

Microsoft 365AzureEntra ID Exchange OnlineSharePointActive Directory OktaConditional AccessMFA / SSO

◆ Virtualization & Servers

VMware vSphere / ESXiProxmoxHyper-V DockerWindows Server 2012–2022Linux Servers SQL DBA

◆ Networking

Cisco HA Firewalls (10Gb)MerakiUbiquiti Campus Area NetworksSite-to-Site VPNRouting & Switching Wireless APsStructured Cabling

◆ Security & Incident Response

Microsoft Sentinel (SIEM/SOAR)KQLThreat Hunting Digital ForensicsPenetration TestingVerkada NISTISO 27001PCI-DSS / HIPAA / SOX

◆ Automation & Scripting

PowerShellBashPython Okta WorkflowsGoogle Apps ScriptPower Automate REST APIs

◆ VoIP & Collaboration

RingCentral8x8Cisco Unity
03

Where I’ve done it

Field Engineer, Infrastructure Lead · Jumpstart Technology Jun 2023 — Present
Managed Service Provider · San Jose, CA — dedicated architect for a Tier-1 Silicon Valley VC firm + multiple high-growth startups
  • Client scaling: Architected core infrastructure for startup clients through rapid scaling from 10 to 100+ employees — owning network, virtualization, identity, and security end to end.
  • High-availability networking: Engineered a redundant 10Gb Cisco firewall cluster with automated HA failover, holding 100% uptime through 3+ simultaneous uplink failures.
  • Virtualization: Leading a full-scale VMware-to-Proxmox migration to insulate clients from vendor volatility and licensing risk; modernized legacy servers to hardened Windows Server 2022.
  • Security automation: Built automation engines with Okta Workflows, Google Apps Script & Power Automate for zero-touch onboarding / offboarding; automated VPN provisioning with Linux scripting.
  • Incident response: Lead local technical resource during two security breaches, working alongside external forensic teams to find entry points and remediate threats.
Systems Administrator · Wired Solutions Jan 2022 — Jun 2023
MSP · Incline Village, NV — 15+ high-density business & ultra-high-net-worth client environments
  • Provided Tier 3 support across Azure, Microsoft 365, and Cisco Meraki for 15+ clients.
  • Led remediation of a breached casino/gaming environment; forensic log analysis to determine entry points and purge threat actors.
  • Deployed networking across Meraki, Ubiquiti & Cisco; site-to-site VPN; VoIP (RingCentral, 8x8, Cisco Unity); Verkada rollout across charter schools.
PC Support Specialist · Barton Memorial Hospital (via Blue Ribbon Staffing) 2021
Healthcare IT · South Lake Tahoe, CA
  • Help desk & break/fix in a healthcare environment — Active Directory, Windows 10, EPIC, and peripherals.
Application Security Analyst · TEKsystems (AEGON) 2018 & 2019
Enterprise security · Cedar Rapids, IA
  • Enforced PCI-DSS, HIPAA & SOX compliance via Active Directory and IBM AS/400 security administration; supported integration of acquired companies.
04

Field notes

Structured cabling and patch-panel buildout

Structured cabling & patch-panel buildout

Clean, fully labeled, and documented — every drop traceable. The part of the job that never shows up in a spec sheet, but keeps a network maintainable for years and makes the next person’s job easier.

Structured CablingPatch PanelsCat6 / 6eLabeling & Docs
05

Education & certifications

◆ Education

B.S., Cybersecurity & Information Assurance
Western Governors University · 2020 – 2023
Aligned to NIST, ISO 27001 & HIPAA frameworks.

◆ Certifications

CySA+PenTest+Security+ Network+A+Project+ ITIL v4
06

Beyond work

A decade-plus chasing winters and water in the Sierra — splitboarding the backcountry, sailing Lake Tahoe, and logging miles through the high country.

07

Let’s talk

Based in San Jose, CA — open to roles across the Bay Area. Always happy to talk infrastructure.