Josue Saint Clair
Calgary,Alberta
Summary
Accomplished Linux Administrator with over 12 years of RHEL production experience specializing in enterprise patch management, vulnerability remediation, and Ansible automation. Red Hat Certified Engineer (RHCE) and RHCSA skilled in package management and structured patching in high-availability environments. Experienced with Tenable Nessus for vulnerability management, adept at CVE prioritization and remediation scripting. Based in Calgary, authorized to work in Canada.
Overview
3
3
Languages
1
1
Certification
13
13
years of professional experience
Work History
Senior Cybersecurity & Systems Specialist
Digicel Group
Haiti
01.2026 - Current
- Run Tenable Nessus vulnerability scans across Linux server estate; analyze scan results by CVSS severity and exploitability; develop remediation plans; apply fixes; validate closure with evidence collection.
- Execute monthly Linux patch cycles using yum/dnf assess package dependencies, service impact, and restart requirements; schedule maintenance windows; deploy patches; validate post-patch health.
- Write Bash and Ansible scripts for pre/post-patch validation service status checks, package version confirmation, log review, application availability testing, and evidence capture.
- Troubleshoot patching failures dependency conflicts, repository connectivity issues, GPG key errors, service failures, and permission problems and document issues with full command output and resolution steps.
- Maintained patch compliance records, risk entries, and remediation tracking logs; produced findings reports for security and compliance stakeholders to enhance transparency and support informed decision-making.
- Support firewall rule changes, repository allow-list updates, and URL whitelist additions through structured ServiceNow change management processes.
Information Systems Specialist (IT Expert)
CDC - U.S. Embassy
07.2024 - 11.2025
- Ran vulnerability assessments and remediation cycles aligned to NIST 800-53; documented CVE findings, remediation actions taken, and evidence of closure for compliance reporting.
- Performed vulnerability assessments to enhance system security and compliance. and remediation cycles aligned to NIST 800-53; documented CVE findings, remediation actions taken, and evidence of closure for compliance reporting.
- Addressed Linux patching issues to ensure timely updates and system reliability. dependency conflicts, repository failures, service disruptions, and permission errors coordinating with Washington D.C. engineering teams when required escalation.
- Deployed Ansible automation for patch deployment, configuration baseline enforcement, and compliance validation; maintained playbooks and operational runbooks.
- Maintained comprehensive technical records, test evidence, issue logs, and risk documentation for all system changes under U.S. government change management protocols.
LAN System Administrator (L2)
U.S. Department of State - U.S. Embassy
01.2023 - 07.2024
- Administered Linux patching and OS upgrades, ensuring service health validation and efficient management of yum repositories and package dependencies.
- Troubleshot package failures, service disruptions, and connectivity issues from patch application, documenting findings and escalating with comprehensive command output evidence.
- Maintained ServiceNow incident and change records, providing detailed evidence of actions taken, results from tests, and follow-up items for clarity.
Systems Engineer
Digicel Group
12.2013 - 04.2023
- Developed Ansible playbooks for automated patch deployment and pre/post-patch validation scripting; wrote Bash scripts for evidence collection and compliance reporting.
- Managed patch cycles across 100+ RHEL Linux production servers assessed repository availability, package dependencies, service impact, and restart requirements before each cycle; validated post-patch health for all servers.
- Troubleshot complex patching failures at scale repository connectivity, GPG key issues, dependency conflicts, and service restart failures under production time pressure.
- Conducted semi-annual security audits, identifying vulnerabilities, developing remediation scripts, and tracking closure with evidence reporting to senior stakeholders.
Education
Bachelor of Science - Electronic Engineering
Faculty of Science/University State of Haiti
Haiti01-2013
Skills
- Linux Patch Management (yum, dnf, rpm): RHEL 6/7/8/9 in production RHCE & RHCSA certified; yum and dnf for package management, patching, and repository administration; rpm for package inspection, verification, and dependency analysis; APT familiarity on Ubuntu/Debian systems
- Ansible Automation & Shell Scripting: Ansible playbooks for automated patch deployment, pre/post-patch validation scripts, configuration baseline enforcement, and evidence collection across 100 server fleet production IaC approach
- Vulnerability remediation: Tenable Nessus for vulnerability scanning identified CVEs, assessed exploitability and business impact, developed remediation plans, tracked closure, and produced evidence-based remediation reports Qualys VMDR developing; patch management lifecycle directly applicable
- Repository, Dependency & Service Impact Assessment: Assessed package dependencies, repository availability, service impact, restart requirements, and maintenance window implications before executing patch cycles across production server fleets
- Pre/Post-Patch Health Validation: Validated pre-patch and post-patch server health services running, package versions confirmed, logs checked, application availability verified, restart requirements tracked as standard practice throughout career
- Troubleshooting Patching Issues: Diagnosed package installation failures, dependency conflicts, repository connectivity issues, permission errors, and service failures following patch application; documented issues and follow-up actions clearly
- Compliance Reporting: Maintained detailed test records, command output logs, issue registers, and risk entries as standard operational practice in US federal government environments with audit requirements
- RHEL Administration: RHEL 6/7/8/9 RHCE & RHCSA; SELinux, systemd, LVM/XFS, NFS, service management, log analysis, performance tuning
- Vulnerability Remediation: Tenable Nessus (production scanning, CVSS prioritization, remediation tracking); Qualys VMDR (developing); CVE analysis
- Automation scripting: Ansible (production IaC patch deployment, validation playbooks); Bash (expert evidence collection, validation scripts); Python
- Test documentation: Detailed test records, command output evidence, issue registers, risk entries, findings reports audit-ready standard
- Change Management: ServiceNow (change, incident, CMDB); firewall rule changes, repository allow-lists, URL whitelisting through structured process
- Monitoring & Logs: Zabbix (production), Azure Monitor, Log Analytics (KQL); syslog, journalctl, /var/log analysis for post-patch validation
- Network Security Management: Supported network and connectivity changes (port additions, firewall rule changes, repository path updates) through structured change management processes using ServiceNow
- Linux package management
- Monitoring & Logs: Zabbix (production), Azure Monitor, Log Analytics (KQL); syslog, journalctl, /var/log analysis for post-patch validation
Accomplishments
- U.S. Department of State Superior Honor Award | CDC / U.S. Embassy Haiti, 2025
- Awarded for leading the complete modernization of CDC Haiti's enterprise Linux and network infrastructure one of the State Department's highest employee recognitions.
Certification
Red Hat Certified Engineer (RHCE), Red Hat Certified System Administrator (RHCSA), Microsoft Azure Administrator Associate (AZ-104), Microsoft Azure Security Engineer Associate (AZ-500), Microsoft Cybersecurity Architect Expert, CompTIA Linux+
LANGUAGES
English (Fluent)
French (Fluent)
Haitian Creole (Native)
RECOGNITION
U.S. Department of State Superior Honor Award | CDC / U.S. Embassy Haiti, 2025, Awarded for leading the complete modernization of CDC Haiti's enterprise Linux and network infrastructure one of the State Department's highest employee recognitions.
Personal Information
- Title: Linux Administrator | RHCE & RHCSA | Patch Management (yum/dnf/rpm) | Ansible | Vulnerability Remediation | Qualys VMDR (developing) | Calgary
- Work Permit: Open Work Permit - 3 Years
Timeline
Senior Cybersecurity & Systems Specialist
Digicel Group
01.2026 - Current
Information Systems Specialist (IT Expert)
CDC - U.S. Embassy
07.2024 - 11.2025
LAN System Administrator (L2)
U.S. Department of State - U.S. Embassy
01.2023 - 07.2024
Systems Engineer
Digicel Group
12.2013 - 04.2023
Bachelor of Science - Electronic Engineering
Faculty of Science/University State of Haiti