Red Team Engineer

São Paulo
Risk & Fraud Prevention – Risk Intelligence /
Full Time - remote /
Remote
About CloudWalk:
We are not just another fintech unicorn. We are a pack of dreamers, makers, and tech enthusiasts building the future of payments. With millions of happy customers and a hunger for innovation, we're now expanding our neural network - literally and metaphorically.

About the team
Are you passionate about offensive security and strengthening systems through realistic attack simulations? Join our Red Team!
As a Red Team Engineer, you'll protect our financial platform by executing sophisticated attack simulations, identifying vulnerabilities, and helping build more resilient systems. Working in a fintech environment, you'll assess critical infrastructure security, test AI models against adversarial attacks, and directly influence how we protect millions of transactions and sensitive financial data.

What You'll Be Doing:

    • Become the adversary: Think like a malicious actor! You'll design and execute red teaming exercises, employing various attack techniques like social engineering, phishing, and penetration testing to exploit vulnerabilities in our systems and networks.
    • Uncover the cracks in the armor: Your keen eye will be essential in identifying weaknesses across our IT infrastructure. You'll leverage your expertise to gain unauthorized access, escalate privileges, and maintain persistence within a compromised system, just like a real attacker would.
    • Turn knowledge into action: Your discoveries are valuable! You'll document your findings in detail, including recommendations for remediation. This will help us patch vulnerabilities and significantly improve our overall security posture.

What You Need To Succeed:

    • Experience in planning and executing red teaming engagements.
    • Coding skills with focus on data analysis and API integration.
    • Strong understanding of ethical hacking methodologies and penetration testing techniques (e.g., social engineering, phishing, SQL injection).
    • In-depth knowledge of system and network vulnerabilities.
    • Excellent communication and collaboration skills to work effectively with internal security and engineering teams.
    • Ability to document findings clearly and concisely.
    • You should be skilled at working with Large Language Models - not just using them, but understanding how to craft effective prompts, knowing when (and when not) to apply them, and leveraging them to enhance your development process.
    • Excellent communication skills in English.

    • Bonus points if you have:
    • Experience with exploit development and automation tools.
    • Knowledge of specific industry security threats and compliance requirements
The Future We See:

At CloudWalk, we envision a future where AI empowers every field to reach new heights:
• People teams leveraging AI to transform talent acquisition and employee development.
• Marketing professionals creating data-driven, AI-powered campaign strategies.
• Customer Success teams enhancing client experiences with intelligent solutions.
• Risk analysts combining human expertise with AI to navigate complexities.
• Designers collaborating with AI to push creative boundaries.


Join us at CloudWalk, where we’re not just engineering solutions; we’re building a smarter, AI-driven future for payments—together.