Senior Product Security Engineer

Department: Platform

Location: Brazil

Compensation: $50K – $60K

Employment Type: Contract

Senior Product Security Engineer

The Role

We're hiring a Senior Product Security Engineer to work hand-in-hand with developers to secure the product across its entire lifecycle. You'll be the person who makes our platform defensible — through design reviews, threat modeling, hands-on penetration testing, and secure-coding partnership — and you'll do it as a collaborator who helps engineers ship securely, not a gatekeeper who slows them down.

This role partners closely with product engineering and platform engineering teams.

What You'll Do

• Partner directly with developers to secure the product across the Software Development Life Cycle (SDLC), embedding security early rather than bolting it on at the end.

• Lead security design and architecture reviews, and run threat modeling on new features and services.

• Perform hands-on penetration testing of web applications and Application Programming Interfaces (APIs), and translate findings into clear, prioritized, fixable work.

• Conduct secure code reviews and help define secure-coding standards and security acceptance criteria.

• Operate and tune Static Application Security Testing (SAST), Dynamic Application Security Testing (DAST), and dependency / supply-chain scanning, and triage what they surface.

• Help engineers understand the "why" behind findings so the same class of issue doesn't recur.

• Contribute security evidence and rigor to our compliance posture (System and Organization Controls 2, or SOC 2, ISO 27001, etc.).

What You'll Need (Required)

• A strong track record in product or application security — you've measurably made real products more secure.

• Hands-on penetration testing experience against web applications and APIs.

• Deep understanding of how modern web applications work — single-page front ends, APIs, authentication and authorization (for example, OAuth 2.0 / OpenID Connect), sessions, and the common ways each is attacked (for example, the Open Worldwide Application Security Project, or OWASP, Top 10).

• Experience running security design reviews and threat modeling.

• Solid understanding of the SDLC and how to embed security into it.

• Strong communication skills — you work directly with developers and can explain risk in terms they'll act on.

Nice to Have

• Familiarity with open-source security tooling (for example, OWASP ZAP and Burp Suite Community Edition for testing, Semgrep for SAST, Trivy or Grype for dependency and container scanning, Nuclei for templated scanning).

• A relevant offensive-security certification (for example, Offensive Security Certified Professional, or OSCP).

• Cloud security experience (Amazon Web Services, Microsoft Azure, or Google Cloud Platform) and container / Kubernetes security.

• Experience supporting a SOC 2, International Organization for Standardization (ISO) 27001, or similar program.

• Background in enterprise or regulated environments where deployment security is non-negotiable.

What Success Looks Like (First 90 Days)

• You've reviewed the product's architecture and threat surface and identified the highest-priority security risks.

• A repeatable, lightweight process exists for security design reviews on new work.

• Security findings have a clear triage-to-remediation path, and developers know how to engage you early.

Location and Work Model

Remote in Brazil