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Portfolio and Online Resume

Here you will find a link to my GitHub where I have other coding projects, my LinkedIn, as well a copy of my resume.

LinkedIn

Lloyd W. Turk Jr.

GitHub
Summary of Qualifications

Linux Systems Administrator and Cybersecurity Engineer with over 15 years of experience optimizing and securing enterprise IT environments within healthcare and higher education. Expert in Linux system hardening and cloud migrations, with a proven track record of transitioning workloads from on-prem and AWS to Oracle Cloud Infrastructure (OCI). Proficient in automation via Python and Ansible, and skilled in maintaining security compliance (HIPAA, PCI, NIST) through advanced vulnerability management and incident response.

Technical Skills
  • Operating Systems: Linux (RHEL/CentOS, OEL, Ubuntu, Fedora), Windows Server.
  • Security & Compliance: NIST, HIPAA, PCI, Vulnerability Management (Nessus), Linux Hardening (SELinux, Firewalld, nftables, IPTables).
  • Cloud & Virtualization: Oracle Cloud Infrastructure (OCI), AWS EC2 , VMware vSphere.
  • Automation & Scripting: Ansible, Python, Bash Scripting, Cortex XSOAR Playbooks.
  • Monitoring & Logging: ELK Stack (Elasticsearch, Logstash, Kibana), Splunk ES.
  • Infrastructure & Web: LAMP/LEMP Stacks, Active Directory/Entra ID, Gitlab, RADIUS
IT Certifications
  • CSA CCSKv4
  • OCI Foundations Associate
  • Pearson: IT Specialist - Python
  • Pearson: IT Specialist - Artificial Intelligence

Professional Experience

Stetson University
DeLand, FL, May 2021 - Sep 2025
Linux System Administrator III

Skills Used

Linux administration (CentOS/RHEL, OEL, Ubuntu) security and patch management, provisioning on bare metal and Virtualized hardware (Vsphere, AWS & OCI), Linux system hardening (SELinux, Firewalld, IPTables, nftables etc.), LA/EMP stacks(Linux Apache/Nginx MySQL, PHP), Python, Bash scripting, Ansible playbook creation.

  • Configured and managed ELK Stack, developing custom Kibana dashboards that improved real-time log monitoring and incident response efficiency.
  • Explored and suggested AD/Entra ID authentication solutions for Linux infrastructure including Ubuntu AuthD, Himmelblau, RADIUS etc.
  • Led migration of legacy CentOS 6/7 server to OEL, RHEL, and Ubuntu, improving system security and supportability.
  • Migrated Linux workloads from On-Prem to cloud improving scalability and flexibility to meet changing demands.
  • Migrated Linux workloads from AWS EC2 to Oracle Cloud Infrastructure (OCI), improving performance, reducing licensing costs, and ensuring secure deployment.
Orlando Health
Orlando, FL, October 2015 - May 2021
Cyber Security Engineer

Skills Used

Linux (CentOS/RHEL, Fedora, Ubuntu) provisioning on bare metal and Virtualized hardware, Linux system Hardening (SELinux, IPTables etc.) GPU Accelerated Computing using Cuda on a Linux based platform, Vulnerability Scanning Using Nessus, LA/EMP stacks(Linux Apache/Nginx MySQL PHP), HTML, Python, Bash scripting.

  • Splunk ES Administration, correlation searches, backend Linux servers, integration with XSOAR.
  • Cortex XSOAR provisioning, configuration, administration. Created multiple playbooks to automate various security tasks, improving incident response times and reducing manual workload.
  • Planned, configured, and administered various Linux servers (RHEL) for gitlab, Splunk Dev environment, and other Cyber Security Team projects.
  • Audited enterprise Linux and Windows systems with Nessus and complementary tools, identifying and remediating vulnerabilities to strengthen security posture.
June 2014 - October 2015

Identity Management Administrator

Skills Used

Windows Active Directory, Microsoft Exchange, User Access Management, Identity Access Management, Role Based Access Controls (RBAC), Vendor Access Management and Account Creation, Active Directory User maintenance.

Data Analyzers
Orlando, FL, January 2014 - April 2014
Junior Data Recovery Technician

Skills Used

Windows, Linux, and Mac Forensics, using The Sleuth Kit and Autopsy. Linux Servers, data Recovery using software such as dd, ddrescue and testdisk. DeepSpar Disk Imager. GPU accelerated password recovery for recovering encrypted files, hardware level file recovery using class 100 clean room lab. HDD write blockers, and HDD duplicators, Windows Servers.

JBT & Associates
Daytona Beach, FL, June 2011 - November 2013
Computer Technician

Delivered IT support including PC setup/repair, software and hardware installation, data backup, and Windows network administration with user and server provisioning.

Eastern Maine Community College
Bangor, ME, March 2009 - May 2011
Student Worker (IT Department)

Skills Used

Provided hardware/software support, network setup, imaging, and troubleshooting for Windows and Linux systems.

Education

Daytona State College
Daytona Beach, FL, Graduated Dec 2018
A.S. in Computer Programming and Analysis (Software Engineering Technology)
Eastern Maine Community College
Bangor, ME, Graduated May 2011
Computer Repair Technology Certification (2yr Certificate).
Professional Training & Legacy Certifications
  • Linux Foundation Certified System Administrator (LFCS) | In Progress
  • LFD102: A Beginner's Guide to Open Source Software Development
  • LFS162: Introduction to DevOps and Site Reliability Engineering
  • LFS151: Introduction to Cloud Infrastructure Technologies
  • LFS169: Introduction to GitOps
  • EC-Council Certified Ethical Hacker (CEH) | Active Cycle: 2013 – 2025