Full-time Aug 2024 - Sep 2025 • Bogota, D.C., Colombia
Senior Backend Security Engineer
@Mercado Libre
• E-commerce & Fintech Ecosystem
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Role Overview & Company Profile
Mercado Libre • E-commerce & Fintech Ecosystem
The largest e-commerce and payments ecosystem in Latin America (Mercado Pago), serving over 100M active users with sub-second transactional processing and planetary cloud infrastructure.
Engineered distributed security tooling, real-time risk assessment microservices, and automated policy remediation pipelines protecting high-scale cloud infrastructure across Latin America’s largest fintech and marketplace ecosystem.
Key Architectural & Engineering Achievements
- • Architected and deployed an internal risk evaluation and access governance engine in Golang and Python, correlating BigQuery telemetry, internal REST APIs, and cloud storage to continuously audit permissions and trigger automated policy mitigation across the enterprise.
- • Engineered distributed scanning pipelines for continuous secret detection and PII data minimization across code repositories, commit histories, and Google Cloud storage buckets, proactively preventing credential exposure.
- • Instituted shift-left preventive security controls by embedding automated compliance checks into pre-commit hooks and CI/CD pipelines, proactively blocking hardcoded secrets and guaranteeing strict adherence to corporate security policies.
- • Automated security incident triage and response workflows by integrating n8n orchestration with Go microservices and Bash scripts, streamlining ticketing operations and significantly reducing operational response latency.
- • Enforced Zero-Trust architecture principles across cloud infrastructure, establishing continuous security posture monitoring and least-privilege identity access management (IAM) guardrails.