Jeff Rainey

Senior Systems Engineer

I keep Windows infrastructure secure, available and recoverable, mostly for regulated businesses in banking, mortgage, healthcare and utilities.

Lake Forest, CA · Open to remote, or hybrid/onsite in Orange County and South LA

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20+ yearsin Windows infrastructure
1,200+ usersmoved to full-time remote work in 2020
4,000 desktopsVDI platform I co-architected
99% fewerCitrix outages across multiple hospitals

I’ve spent my career on the infrastructure that regulated businesses can’t afford to have go down: directory services and identity, remote access, virtualization, and backup and recovery. Most of it has been in mortgage servicing, banking, healthcare and utilities, where the work has to hold up for users, InfoSec and the auditors (usually in that order of patience).

I’ve run the full lifecycle, from evaluating and sizing a platform, through deployment and patching, to proving it can actually be recovered (the part that tends to get skipped). I’ve also led teams twice, a seven-person infrastructure team at a bank and a Citrix team supporting multiple hospitals. Both times I stayed hands-on, mostly because I like it, and partly because someone has to read the logs.

What I work with

Windows & directory

Windows Server 2012 R2-2025, Active Directory (multi-site, trusts), Group Policy, DNS, DHCP, DFS, AD CS / PKI, PowerShell

Identity & access

Entra ID and Entra Connect, Okta SSO and MFA, ADFS, LDAPS

Microsoft 365

Exchange Online, SharePoint Online, Teams, licensing and user lifecycle

Citrix & VDI

Citrix Virtual Apps and Desktops, NetScaler / ADC, ADM, WEM, Profile Management, ControlUp; Citrix Certified Expert (CCE-V)

Virtualization & storage

VMware vSphere 7-8, Hyper-V, Cisco HyperFlex, NetApp, HPE Nimble, Qumulo

Backup, DR & security

Cohesity, Veeam (incl. Microsoft 365), DR exercises, hardening, patching, vulnerability remediation; SOX, FDIC, HIPAA

Selected work

Home lab

Where I keep learning: Linux, automation and the tools I haven't run in production yet.

Contact

I'm looking for my next role as a senior systems engineer, Citrix/VDI engineer, identity engineer or hands-on infrastructure lead. Full-time or contract.

LinkedIn jeff@jeffrainey.net