Resume

Shanna Rentas

IT Support & Technical Operations | CompTIA A+ Network+ Security+ | ISC2 CC | Microsoft SC-900

📧 mail@shannarentas.com | 🔗 linkedin.com/in/shannarentas | 👩🏽‍💻 shannarentas.com

Bronx, NY


About Me

CompTIA A+, Network+, and Security+ certified IT professional with extensive experience supporting digital operations through troubleshooting, quality assurance and system monitoring. At G/O Media and Vox Media, worked with HTML, JavaScript, third-party tags, and platform configurations to identify issues, resolve problems, and keep systems and campaigns running smoothly. Building on that experience with hands-on training in networking, operating systems, hardware, security, and user support. Analytical, customer-focused, and comfortable solving problems under pressure, with a strong focus on clear communication, accurate documentation, and dependable service.

Skills

Networking: TCP/IP, Subnetting, DNS, DHCP, VLANs, Ethernet Cabling, Network Drive Mapping, Wireshark

Software & AI: Windows 10/11, macOS, Ubuntu, Kali Linux, Rocky Linux, ServiceNow, Oracle VirtualBox, UTM, HTML, JavaScript, ChatGPT, Gemini, CoPilot

Hardware: Install & Troubleshooting, Storage Devices, Power Supplies, Expansion Cards, Printers

Office Suite & Collaboration Tools: Microsoft 365 (Word, Excel, PowerPoint), Google Workspace (Docs, Sheets, Slides), Microsoft Teams, Slack, Zoom, Google Meet, Asana, GoTo Webinar

Certifications

  • CompTIA A+ | CompTIA Network+ | CompTIA Security+ | Microsoft SC-900 | ISC2 CC
  • Cisco CCNA (In Progress)

Education

IT Support Program

Per Scholas | Bronx, NY

Continuing Education, Cybersecurity Program

Borough of Community College | New York, NY

Bachelor of Science in Behavioral Sciences

Iona College | New Rochelle, NY

Professional Experience

Campaign Manager | G/O Media | New York, NY

July 2023 - April 2025

  • Troubleshot and resolved third-party ad tag issues in Google Ad Manager, including HTML, JavaScript, and iframe-based implementations, reducing errors by 35% through proactive monitoring and root-cause analysis.
  • Tracked performance trends and reviewed delivery metrics in Excel to maintain reliable operations.
  • Collaborated with cross‑functional teams to review configuration variances and implement corrective actions.

Campaign Manager | Vox Media | New York, NY

November 2021 - January 2023

  • Served as a primary point of contact for production support inquiries from internal stakeholders, designers, and clients.
  • Examined reporting and data inconsistencies using Excel, improving accuracy by 30%.
  • Supported campaign launches that reduced recurring gaps and strengthened operational consistency

Ad Ops & Marketing Specialist | MediaPost Communications | New York, NY

January 2019 - November 2021

  • Troubleshot HTML and JavaScript issues by identifying bugs, errors, rendering problems, and compatibility issues across multiple environments, then validating corrective changes.
  • Improved workflow efficiency by communicating clear solutions to clients and internal teams.
  • Created process documentation that reduced recurring gaps and strengthened operational consistency.

Volunteer Experience

Tech Coach | DOROT | New York, NY

September 2026 - Present

As a DOROT Tech Coach, provide one-on-one guidance to older adults using smartphones, tablets, and laptops. Help them work through everyday technology questions by explaining steps clearly, adapting to their comfort level, and guiding them toward solutions. Build patience, communication, and problem-solving skills while helping people feel more confident using technology.

Additional Training and Experience

Active Directory Lab

  • Built a Windows Active Directory home lab to practice creating and managing users, groups, and organizational units.
  • Practiced password resets, account enable/disable, group membership, domain joining, and basic Group Policy administration.
  • Used Windows administrative tools and PowerShell commands to investigate system and user issues

Networking & Troubleshooting Labs

  • Configured and troubleshot Cisco networking scenarios using Cisco Packet Tracer, including VLANs, SSH, IPv4/IPv6 addressing, routing, and OSPF.
  • Used Wireshark to examine network traffic and analyze protocols including DNS.
  • Practiced network troubleshooting by identifying addressing, routing, connectivity, and configuration issues.

TryHackMe Hands-On Training

  • Completed the TryHackMe Cyber Security 101 learning path along with hands-on rooms covering Windows Fundamentals, Windows Basics, Windows Command Line, Active Directory Basics, Networking Essentials, PowerShell, and Wireshark.
  • Applied foundational security concepts through interactive labs involving Windows and Linux systems, networking, command-line tools, traffic analysis, and common security concepts.

Security & Technical Training

  • Hands-on practice with Windows and Linux environments, including Kali Linux, Ubuntu, and Windows virtual machines.
  • Explored identity and access management concepts including Microsoft Entra ID (Azure AD), Multi-Factor Authentication (MFA), and Microsoft 365 admin roles.
  • Used security and troubleshooting tools including Wireshark, Nessus Essentials, Burp Suite, and OpenVPN.