Cloud Security Engineer Senior - IT

MercadoLibre
Buenos Aires
Workplace: HybridFull timeFunction: CybersecuritySkills: ["Collaboration","Continuous improvement","Problem-solving","Attention to security and availability"]

Design and scale secure cloud systems that detect and mitigate malicious traffic in real time. Build Go-based microservices and use language models to identify anomalous patterns and improve threat context. Drive security improvements for resilient, observable platforms, and help with early detection and response to new web attack vectors. Perform code reviews and continuously implement new security and availability features alongside security and infrastructure teams.

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MercadoLibre
MercadoLibre
2 days ago

Cloud Security Engineer Senior - IT

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Source: Company careers pageValidated by: Fursa AI
Last checked: 2 hours agoStatus: Live

Job Summary

Design and scale secure cloud systems that detect and mitigate malicious traffic in real time. Build Go-based microservices and use language models to identify anomalous patterns and improve threat context. Drive security improvements for resilient, observable platforms, and help with early detection and response to new web attack vectors. Perform code reviews and continuously implement new security and availability features alongside security and infrastructure teams.
Location: Buenos Aires
Workplace: Hybrid
Employment Type: Full time
Job Function: Cybersecurity
Seniority: Mid level

Key Responsibilities

  • •Design and implement automated security controls to detect and mitigate malicious traffic in real time.
  • •Develop efficient microservices using Go, applying architecture, scalability, and performance best practices.
  • •Use language models to detect anomalous patterns and improve contextualization of security threats.
  • •Propose and drive security enhancements to strengthen resilient, observable, and secure platforms.
  • •Contribute to early detection and response to new web attack vectors through collaboration with security and infrastructure teams; perform code reviews and implement security/availability features.

Key Requirements

  • •Solid backend development experience using Go and microservices architecture design.
  • •Strong software engineering practices, including automated testing, observability, error handling, and performance optimization.
  • •Advanced knowledge of web threats such as digital fingerprints, scanners, malicious automation, and control-evasion techniques.
  • •Experience applying language models or machine learning to detect and analyze automated traffic.
  • •Knowledge of cloud computing services (AWS or GCP) plus CI/CD integration and deployment practices.
Experience:CloudSecurityMicroservicesMachine learningAI/ML
Skills:CollaborationContinuous improvementProblem-solvingAttention to security and availability
Languages:Spanish
Tech Stack:GoMicroservicesAWSGCPCI/CDMachine learningLanguage modelsObservability

Company Brief

MercadoLibre
Operates Latin America's leading e‑commerce marketplace and fintech ecosystem, offering online buying and selling, classifieds, payment processing, credit, and logistics services across multiple countries in the region.
Industry: Online Marketplaces
Company Size: Enterprise (1,001+ employees)
Revenue: USD 1B+
Growth: Public Company
Valuation: Public Company (Market Cap in USD)
Funding: IPO / Publicly Listed
Headquarters: Buenos Aires, Argentina
Founded: 1999
Glassdoor
Glassdoor: 3.8
WebsiteLinkedIn