Senior Security / QA Lead | 12 weeks+ (569)

Description: Lead adversarial security testing and validate decision paths for an AI-driven platform. Focus on security, correctness, and financial integrity ahead of production launch. Requirements: Strong background in security testing, including penetration and access-control testing. Hands-on experience with Python and ability to read codebases for test design. Experience with multi-tenant SaaS and understanding of tenant isolation failure modes. Knowledge of cryptographic audit trails and tamper-evidence. Familiarity with Docker, CI workflows, and GitHub Actions. Proficiency in Postgres for validating state and persistence. Clear written English and ability to produce rigorous defect reports. Benefits: Equipment provided for remote work. Full back-office support including Legal, Accounting, and HR. Career and cultural mentoring available. Free English lessons with a native speaker. Referral bonus for recommending candidates. Access to Florianópolis HQ, open for remote workers.