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Security Engineer – Research & Test

Remote · Brazil Full-time

Job Description:

  • Conduct security research and vulnerability analysis across fintech and cryptographic systems.
  • Design and build automated security testing infrastructure using Rust and shell scripts.
  • Develop and maintain comprehensive security test suites, including fuzzing, penetration testing automation, and cryptographic protocol testing.
  • Build monitoring and alerting systems to detect security anomalies and potential attack vectors.
  • Perform threat modeling and security assessments of system architecture and code implementations across multiple projects.
  • Research and analyze emerging attack techniques, vulnerabilities, and defensive technologies relevant to financial systems and cryptographic protocols.
  • Create tools and frameworks for continuous security validation in CI/CD pipelines.
  • Document security findings and translate research into actionable recommendations for the development team.
  • Maintain and enhance existing security testing tools and infrastructure.

Requirements:

  • Strong software development fundamentals with 2–4 years of experience.
  • Solid experience with Rust or willingness to learn quickly.
  • Comfortable with TypeScript and modern web technologies.
  • Strong experience with Linux systems and shell scripting.
  • Background in security testing methodologies, including static analysis, dynamic analysis, and penetration testing.
  • Knowledge of cryptographic concepts and secure coding practices.
  • Experience building automated testing infrastructure or CI/CD systems.
  • Familiarity with security tools and frameworks (SAST, DAST, fuzzing tools, etc.).
  • Knowledge of network protocol analysis and traffic inspection tools.
  • Strong analytical and problem-solving skills with attention to detail.

Benefits:

  • Health insurance
  • Professional development opportunities

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