Summary
Overview
Work History
Education
Skills
Certification
Timeline
Generic

John B. Shamus

Ballwin,MO

Summary

Resolute IT professional with expertise in cloud infrastructure and network administration. Proficient in Microsoft 365 Administration, along with Active Directory, and network security experience, committed to designing secure, scalable solutions to drive operational excellence.

Overview

3
3
years of professional experience
1
1
Certification

Work History

Systems Engineer

Karpel Solutions
03.2025 - Current
  • Configure and manage Sophos firewalls to secure network infrastructure for 50+ client organizations, significantly enhancing protection against cyber threats
  • Design and implement Microsoft 365 solutions, including Exchange, Teams, and OneDrive, improving cloud-based collaboration for 200+ users
  • Manage Active Directory environments, optimizing group policies and authentication processes to ensure secure and efficient access control
  • Manage sensitive data with strict compliance with security standards, implementing encryption and access controls

System Administrator II

Karpel Solutions
10.2024 - 03.2025
  • Managing user accounts, group policies, and security settings, enhancing tenant performance and usability
  • Developed SQL-based automation scripts for system monitoring, streamlining operational efficiency
  • Maintained large-scale network infrastructure, ensuring uptime and scalability for 50+ client organizations

Systems Administrator

Karpel Solutions
03.2024 - 10.2024
  • Supported Microsoft 365 deployments, configuring email, OneDrive, and Teams for seamless access across 150+ endpoints
  • Configured, monitored, and maintained Active Directory environments, including user account management, permission auditing, and policy enforcement to ensure secure network operations, adhering to security best practices and incident response procedures.
  • Assisted in network configuration and troubleshooting, improving system reliability through timely security patches

Intern Network Administrator

Sauron Enterprises
11.2022 - 03.2024
  • Monitored and maintained enterprise networks supporting 50+ users, resolving connectivity issues to ensure operational continuity
  • Assisted in configuring Sophos firewalls and Active Directory group policies, gaining expertise in network security
  • Installed data drops and routed Ethernet cabling for network expansions, ensuring reliable connectivity for new workstations and devices

Education

Associate of Technology -

Ranken Technical College
Wentzville, MO
12.2023

Skills

  • Microsoft 365 Administration
  • Active Directory Management
  • Sophos Firewall Configuration
  • Basic SQL
  • Large-Scale Network Maintenance
  • Windows Server Administration
  • Maintaining Backups
  • Cisco device configuration
  • Sophos
  • Windows Server
  • Infrastructure development
  • Virtualization technologies
  • Project management
  • Network infrastructure administration

Certification

  • MS-900: Microsoft 365 Fundamentals
  • CompTIA A+
  • Sophos Certified Engineer
  • AZ-900: Microsoft Certified: Azure Fundamentals, 06/25

Timeline

Systems Engineer

Karpel Solutions
03.2025 - Current

System Administrator II

Karpel Solutions
10.2024 - 03.2025

Systems Administrator

Karpel Solutions
03.2024 - 10.2024

Intern Network Administrator

Sauron Enterprises
11.2022 - 03.2024

Associate of Technology -

Ranken Technical College

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John B. Shamus