In my role as a Senior Systems Security Engineer specializing in Cyber Threat Counter-Exploitation at Experian, I was entrusted with the critical responsibility of safeguarding the organization's digital assets against a rapidly evolving landscape of cyber threats. Experian, a global leader in data-driven solutions, holds a steadfast commitment to data security and privacy, and my role played a pivotal part in upholding these values.

Freelance Penetration Tester/Bug Hunter at multiple companies: - Synack Red Team (https://www.synack.com/red-team/) [Bug Hunter] - White Jaguars (https://www.whitejaguars.com/en-us/) [Pentest consultant] Assigned to pentest projects for clients in Costa Rica and USA - DreamLab (https://dreamlab.net/en/) [Pentest consultant] Assigned to pentest projects for clients in Chile, most of them in the financial sector. - Winning Poker Network (WPN) [Penetration tester consultant] Was in charge of searching for vulnerabilities in the poker client (to be locally installed on the player's computer) developed for the Winning Poker Network games. Also pentested web applications (games) they would put online for special tournaments. Main tasks: Web application pentesting API pentesting Mobile application pentesting External pentesting

In my role, I actively participated in the seamless deployment and ongoing support of robust security solutions, including notable tools such as the McAfee Advanced Database Security (ADS) for database firewall protection, Waratek for runtime application self-protection, and Endpoint Detection and Response (EDR) systems. My responsibilities extended to overseeing the end-to-end process of reviewing and approving changes pertaining to firewalls, encompassing intricate aspects like ruleset modifications and topology adjustments. This multifaceted involvement allowed me to play a key role in enhancing our security infrastructure and ensuring the integrity and effectiveness of our defense mechanisms.

Specializing in Offensive Cyber Threat Intelligence, I focused on the proactive identification and analysis of adversarial tactics, techniques, and procedures. My role revolved around understanding and dissecting potential threats from an offensive standpoint, allowing for informed decisions on cybersecurity strategies. Through meticulous research and analysis, I provided valuable insights to preemptively counteract emerging threats and enhance our organization's defensive capabilities.

As a specialist in Application and Data Security, my expertise centered on comprehensively safeguarding our digital ecosystem. I delved into the intricate realm of securing applications and data, employing a proactive approach to identify vulnerabilities, assess risks, and implement robust protection measures. Through meticulous analysis and strategic planning, I fortified our defenses against potential breaches, ensuring the integrity, availability, and confidentiality of our critical assets.

Functioning as a skilled Pentester, I immersed myself in the realm of offensive security, meticulously probing applications and systems for vulnerabilities. My role involved simulating real-world cyberattacks to pinpoint potential entry points, weak links, and exploitable avenues. Through rigorous testing and analysis, I provided actionable insights to fortify our security posture, enabling the organization to proactively address vulnerabilities and enhance its overall resilience against cyber threats.

In my role as a Firewall Support specialist at Experian, I was entrusted with the critical responsibility of maintaining the integrity and effectiveness of our network security infrastructure. I played a pivotal part in ensuring the seamless operation of our firewall systems, including reviewing and approving changes related to rulesets and topology. Through meticulous analysis and collaboration with cross-functional teams, I contributed to the ongoing enhancement of our security measures, safeguarding our digital assets against potential threats and ensuring a resilient defense mechanism.

Was assigned to the Pfizer account. Was in charge of providing remote support for installation and remediation of issues affecting Cisco routers, switches and wireless access points. Worked closely with the teams supporting UNIX and Windows servers. My good work was recognized with the ITO Excellence Award.

Provided remote technical support for Hewlett-Packard employees from locations all around the globe and also for those from mergers and acquisitions. Won a recognition called HP-IT Customer Champion.