Security Engineer

São Paulo, BRAFull-timeRisk and Compliance
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About CloudWalk

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 customers and a hunger for innovation, we're now expanding our neural network - literally and metaphorically.

About this role

  • Investigate security events, incidents, and unusual activity.
  • Analyze logs from applications, infrastructure, endpoints, and cloud services.
  • Build and improve detections, alerts, security controls, and internal processes.
  • Work across Security teams on current risks and priorities.
  • Identify gaps and opportunities to improve tools, controls, and ways of working across Security teams, then help turn them into practical solutions.
  • Continuously improve how the team uses AI and turn effective approaches into reusable tools and workflows.
  • Document findings and communicate risks clearly.

What You Need To Succeed

  • Familiarity with GCP / cloud security telemetry and IAM.
  • Experience with SIEM / detection-as-code (e.g. Chronicle, Splunk, or similar).
  • Fintech / payments security context (PCI DSS, Pix, acquiring).
  • Building internal security tooling or LLM-assisted triage workflows.

Nice to Have

  • Hands-on experience in Security Operations, Detection Engineering, Incident Response, or Security Engineering.
  • Comfort analyzing logs across applications, infrastructure, endpoints, and cloud (you go to the source, not only dashboards).
  • Experience building or improving detections, alerts, and security controls.
  • Scripting skills to automate investigations and workflows (TypeScript, Python, or similar).
  • Clear written communication of findings and risk to technical and non-technical partners.
  • Advanced English for day-to-day work with a global team.

The Future We See

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.