Rafael Sousa
Brasília, Brazil
Rafael Sousa
Cybersecurity, Pentester an Data Protection Expert
Category : Cybersecurity
As a Senior Security Analyst at Hakai Security, I leverage my expertise in reverse engineering and malware analysis to protect organizations from cyber threats. With over 10 years of experience in the field, I have developed a strong skill set in exploit development, research, and quality assurance testing.
In my previous roles, I have worked as a Reverse Engineer Analyst at Ministério da Fazenda and a Pentester at Universidade de Brasília, where I conducted vulnerability assessments, penetration tests, and social engineering attacks. I have also contributed to the development of proprietary protocols and file formats for interoperability. My passion for cybersecurity drives me to continuously learn and improve my skills, ensuring the highest level of security for my clients.
In my previous roles, I have worked as a Reverse Engineer Analyst at Ministério da Fazenda and a Pentester at Universidade de Brasília, where I conducted vulnerability assessments, penetration tests, and social engineering attacks. I have also contributed to the development of proprietary protocols and file formats for interoperability. My passion for cybersecurity drives me to continuously learn and improve my skills, ensuring the highest level of security for my clients.
Working hours
- Monday:08h00 To 18h00
- Tuesday:08h00 To 18h00
- Wednesday:08h00 To 18h00
- Thursday:08h00 To 18h00
- Friday:08h00 To 18h00
- Saturday:Not available
- Sunday:Not available
Red Team Analyst
Red Team Analyst
VULTUS · Full-timeVULTUS · Full-time
Oct 2025 - Present · 4 mosOct 2025 to Present · 4 mos
RemoteRemote
As a Red Team Analyst, I specialize in simulating advanced threat actors to assess and strengthen the security posture of organizations. My work combines offensive security, malware development, and adversary emulation to identify systemic weaknesses before they can be exploited in real-world scenarios.
I plan and execute full-scope Red Team engagements—including initial reconnaissance, phishing operations, network intrusion, privilege escalation, lateral movement, and stealthy persistence—ensuring realistic evaluations of detection and response capabilities. I routinely develop custom tools, payloads, and evasion techniques to bypass modern security controls and replicate TTPs aligned with frameworks such as MITRE ATT&CK.
My role also involves close collaboration with Blue Teams and leadership to deliver actionable insights, detailed technical reports, and strategic recommendations that drive continuous improvement of the organization’s security posture.
Red Team Analyst
VULTUS · Full-timeVULTUS · Full-time
Oct 2025 - Present · 4 mosOct 2025 to Present · 4 mos
RemoteRemote
As a Red Team Analyst, I specialize in simulating advanced threat actors to assess and strengthen the security posture of organizations. My work combines offensive security, malware development, and adversary emulation to identify systemic weaknesses before they can be exploited in real-world scenarios.
I plan and execute full-scope Red Team engagements—including initial reconnaissance, phishing operations, network intrusion, privilege escalation, lateral movement, and stealthy persistence—ensuring realistic evaluations of detection and response capabilities. I routinely develop custom tools, payloads, and evasion techniques to bypass modern security controls and replicate TTPs aligned with frameworks such as MITRE ATT&CK.
My role also involves close collaboration with Blue Teams and leadership to deliver actionable insights, detailed technical reports, and strategic recommendations that drive continuous improvement of the organization’s security posture.
- Reverse Engineering of Malwares
- Exploit Development
- Research Team
- Exploit Development
- Research Team
Computer Science Bacharelor.
- 🇬🇧 English
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