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Hans User

@hansuser3

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Cybersecurity & IT Systems Specialist improving ISO security, incident readiness, and 99.9% system availability.

Colombia

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What I'm looking for

I’m looking for a security-focused role where I can lead ISO implementation and auditing, strengthen SOC-style controls with XDR/EDR/SIEM, and ensure mission-critical uptime—while using data analysis to improve resilience, performance, and response times.

I’m a Cybersecurity & IT Systems Specialist focused on ISO/IEC 27001:2022 Lead Implementation and multi-norm auditing (Quality, Environmental, and OHS). I combine vulnerability analysis and forensic tools with full-stack testing to strengthen security posture and operational resilience.

In mission-critical environments, I’ve driven operational continuity, built and supported security controls, and improved performance and response times. I’ve leveraged XDR/EDR/SIEM technologies and robust cloud infrastructure management to support 99.9% availability and faster incident response.

I’ve hands-on delivered results across cybersecurity operations, networking, and data management—deploying a WAF that mitigated 95% of external threats, improving internal stability by 30%, and managing secure digital environments for 1,000+ users. From forensic auditing and compliance-focused data reviews to systems administration with Windows Server and VMware sandbox testing, I work with a practical, leadership-first mindset to reduce risk and keep systems running.

Experience

Work history, roles, and key accomplishments

Support Engineer

Control Online International

Sep 2025 - Dec 2025 (3 months)

Provided high-level technical assistance on client sites, ensuring 100% operational continuity and reducing incident response time by 15% through proactive infrastructure troubleshooting. Developed SQL scripts that improved web application performance by 20% while safeguarding mission-critical database integrity and security.

Business Continuity Incident Response Technical Training

Technology and Computer Science Teacher

Department Of Education

May 2021 - Mar 2025 (3 years 10 months)

Deployed and configured a Web Application Firewall (WAF) that mitigated 95% of external cyber threats targeting institutional web assets. Established firewall architectures and security policies, improving internal network stability and data protection by 30%, while securing and managing a 1,000+ user digital environment.

Web Application Firewall Management Firewalls Policy Management Network Security Infrastructure Management Risk Mitigation Security (Users

Operational Technician

National Electoral Council - Cne

Apr 2018 - Aug 2018 (4 months)

Led systematic forensic auditing and purification of political party billing data, ensuring 100% compliance with electoral transparency laws. Conducted audits identifying and correcting financial discrepancies in 500+ records, improving data integrity and executive decision-making speed by 25%.

Compliance Auditing Risk Mitigation Data Standardization Data Quality Assurance Executive Reporting

IT Operations & Logistics Coordinator

Registry Office

Jun 2017 - Oct 2017 (4 months)

Maintained workstations and network connectivity during critical electoral periods, achieving 100% system availability during national voting cycles. Directed technical planning for 50+ polling stations and trained 200+ election jurors on specialized software, ensuring zero technical errors during live execution.

System Availability Polling Station Technical Planning Training Delivery

Management Professional

Fscr Engineering 1

Sep 2013 - Dec 2013 (3 months)

Optimized telecommunications operations for satellite, broadband, and telephony services, increasing service delivery efficiency by 18%. Supervised a multidisciplinary team of 25 technicians and delivered data-driven operational reports focused on compliance assessments and risk management.

Telecommunications Operations Satellite Broadband Telephony Support Team Leadership Workload Distribution Operational Reporting Compliance Assessments Risk Management

Systems Administrator

Teleisland

Aug 2010 - Feb 2012 (1 year 6 months)

Directed the IT department, managing data networks and domain controllers to maintain 99.9% uptime for critical server infrastructure. Implemented access controls and backup strategies to secure 100% of institutional data, and used VMware sandbox testing to reduce deployment errors by 40%.

Windows Server Administration Domain Controllers Network Administration Access Control Backup Strategies Server Uptime Monitoring VMware Sandbox Testing Data Security

Systems Support

Fedex

Mar 2009 - Jul 2009 (4 months)

Managed multisite infrastructure issues for regional offices, ensuring 100% operation of critical logistics systems across the Atlantic Coast. Provided high-impact onsite and remote support, resolving 90% of technical bottlenecks within the first 2 hours and leading secure installation and training for proprietary applications.

Technical Training