John Adams

Security Engineer

Security-focused professional with over 10 years of experience in Identity Access Management, incident response, and production support. Most recently at Ernst & Young managing credential lifecycle and access controls.

Open to opportunities Lynnwood, WA CompTIA Security+ ISC2 CC

Professional background

Jul 2023 — Apr 2025

Information Technology Analyst

Ernst & Young · Seattle, WA
  • Managed credential lifecycle for the federal government, ensuring compliance and developing standard operating procedures.
  • Conducted internal credential audits and managed cases for critical infrastructure and hardware asset management.
  • Spearheaded problem resolution for a major system migration (MyID), administering access controls and Active Directory.
IAMActive DirectoryCompliance
Jun 2021 — Dec 2022

Support Engineer II

SkuVault · Remote
  • Maintained client API integrations for an Inventory Management System.
  • Reduced inbound client request volume by 20% by building self-service HTML/CSS templates.
  • Analyzed client data within Azure pipelines, communicating findings to development and implementation teams.
Elastic StackAzureHTML/CSS
Apr 2017 — Apr 2021

Help Desk Analyst II

Citi · Jacksonville, FL
  • Provided production support for financial infrastructure, resolving bugs and managing enhancement requests.
  • Analyzed large transaction data sets and server configurations for the global data repository.
  • Collaborated with development teams to eliminate 80% of production issues after product launch.
Incident ResponseData AnalysisSDLC
Apr 2015 — Apr 2017

Tier II Support

Apple · Jacksonville, FL
  • Provided escalation support and mentorship to Tier 1 technical teams.
  • Maintained a 90% technical resolution rate on tickets, ensuring high-quality support.
  • Supported major Apple product launch events for new software & hardware.
EscalationMentorshipmacOS/iOS

Selected work

🚩

CTF Challenges & OSCP

Actively working through Hack The Box and similar CTF platforms to sharpen penetration testing and exploitation skills. Building toward the OSCP certification.

Hack The BoxCTFOSCPPenetration Testing
🛡️

Homelab Security Network

Multi-device home network with centralized SIEM logging, Pi-hole DNS filtering, segmented VLANs, and a dedicated Kali Linux node for security testing.

SIEMPi-holeKaliNetwork Segmentation

AI/ML Workstation

Fedora workstation with AMD RX 9070 XT and ROCm for local AI inference. Hosts quantized models via Ollama for security research.

ROCmLinuxOllamaAMD GPU

Tools & technologies

Languages

PythonJava Bash / Shell ScriptingSQL C / C++Go

Software & Tools

Linux — Ubuntu, Fedora, KaliNmap / Wireshark Metasploit / Burp SuiteDocker TCP/IP NetworkingActive Directory

Security & ML

Penetration TestingVulnerability Assessment Identity Access ManagementLLM Fine-tuning & Inference ROCm / CUDAReverse Engineering
Certifications
CompTIA Network+
CompTIA Security+
ISC2 Certified in Cybersecurity
Education
AAS in Computer Science
Bellevue College
High School Diploma
Yulee High School

Let's connect

Open to internships and entry-level roles in security engineering and systems development. Based in Lynnwood, WA — available remotely.