Systems administration & IT infrastructure

I keep business IT
secure and running.

I’m Adam Sherman, a systems administrator with 15 years of hands-on IT experience. I support Windows, Microsoft 365, and network infrastructure for organizations ranging from law firms to multi-client managed IT environments.

I maintain servers, workstations, and networks, manage identity and email security in Microsoft Entra ID, respond to security incidents, and help organizations choose and deploy the right technology for their needs.

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Selected work

A closer look at the work.

Infrastructure improvements, security investigations, and tools shaped around business needs.

01 / Security response

Following the evidence.
Closing the gap.

Skyward Technical Solutions · Client incident

  • Incident response
  • Microsoft Entra ID
  • Email security
  • Log analysis

A client’s employee scanned a malicious QR code that had slipped past the email filter, giving an attacker access to their mailbox.

Reviewing the logs, I found the attacker had sent payment requests to the client’s billing team and created a mailbox rule to hide the replies. I contained the compromise the same day and worked with the bank to recall the wire.

To close the gap, I added QR-code scanning to the email filter. MFA was already enforced, so in Microsoft Entra ID I disabled the specific MFA method the attacker had exploited for all 100+ mailboxes.

The result

Same-day containment, the full $10,000 wire recovered through a bank recall, and the attack path closed across the entire organization.

02 / Office infrastructure

From no Wi-Fi
to a segmented network.

Twin Oaks Mobile Home Park

  • VLANs
  • Mesh Wi-Fi
  • Network segmentation
  • System migrations

I designed and set up a mesh network from scratch, with office staff and guests on separate VLANs and client isolation enabled for guest devices.

I also helped set up a new CCTV security system and completed five computer migrations, moving users to new workstations while preserving their data and applications. I continue to provide on-site and remote support for office users.

The result

Office-wide wireless where there was none, with guest traffic kept off the staff network, plus five workstation upgrades that kept users’ data and applications intact.

03 / Communications

A phone migration.
More ways to connect.

TLD Law · IT Support Specialist

  • TPx
  • VoIP
  • Softphones

I managed the entire transition from a PBX system with VoIP handsets to a TPx softphone solution.

The setup let employees keep using their existing VoIP handsets, use the softphone software on their computers, or use both.

The result

A completed phone-system transition that gave employees a choice of how to make and receive calls while retaining their familiar handsets.

04 / Automation

Credit data into
faster decisions.

NetRecoveries · Lead Programmer

  • JavaScript
  • Data parsing
  • Process automation

I built custom JavaScript tools that automated how auto loan companies categorized applicants and reviewed incoming applications.

The scripts parsed data from credit reporting agencies, including Equifax, and organized applicants using variables such as credit scores and outstanding debts. I worked closely with managers to fine-tune the rules around the factors they considered most important.

The result

Application review time cut by at least 25%, with categorization tailored to each company’s risk priorities.

Technical toolkit

Across the IT environment.

Systems & infrastructure

Windows & Windows Server, Linux, macOS, VMware, Hyper-V, DNS, domain management

Identity & cloud

Microsoft 365, Microsoft Entra ID, Active Directory, Intune, Group Policy, Microsoft Exchange, Microsoft Azure, Google Workspace, VPN access

Security & email

MFA & authentication methods, Barracuda, Ironscales, email filtering, mailbox rule investigation, log analysis, incident response

Networks & devices

VLANs, network segmentation, mesh Wi-Fi, guest isolation, network printers, CCTV setup, workstation migrations

Scripting & automation

PowerShell, Bash, JavaScript, data parsing, business-rule automation

IT operations & support

User onboarding and offboarding, equipment quotes, application research, Splashtop Business, on-site and remote support

Experience

Hands-on work.
Business context.

Fifteen years spanning managed IT services, legal operations, and software support.

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IT Specialist

2022–Present

Skyward Technical Solutions · Full-time

Maintain servers, workstations, and network devices across 14 client organizations. Manage user onboarding and offboarding, Microsoft 365 and Entra ID accounts, and Barracuda and Ironscales email filtering, and lead response during security incidents.

Research applications for business needs and prepare quotes for workstations, office equipment, and software. Quoted and deployed Splashtop Business for an organization.

Information Systems Manager

2012–Present

Twin Oaks Mobile Home Park · Currently part-time

Provide ongoing on-site and remote support. Built the office’s first Wi-Fi network with segmented staff and guest VLANs, helped install a CCTV system, and completed five workstation migrations preserving users’ data and applications.

IT Support Specialist

2020–2022

TLD Law

Managed the phone-system transition, configured VPN access, applied Active Directory group policies, and supported office personnel.

Lead Programmer

2019–2020

NetRecoveries

Developed JavaScript tools for loan-application categorization that cut review time by at least 25%, maintained client databases, and supported software users.

Earlier experience (2015–2019)

IT Administrator

2016–2019

Ace Q Tutoring

Set up users and computers, installed software, resolved network security issues, and troubleshot hardware.

System Administrator

2015–2018

Joseph Rhee & Associates

Managed accounts and permissions, supported users, maintained the website and CRM database, and documented procedures.

Education & certification

B.S. Computer Science
Chapman University · Graduated 2016

CompTIA A+
Issued February 2019

Get in touch

Let’s talk.

For opportunities in systems administration and IT infrastructure.

adsherman6@outlook.com
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