Senior Security Engineer - Detection and Response

MercadoLibre
Medellín
Workplace: HybridFull timeFunction: CybersecurityExperience: 2-8 yearsSkills: []

Design and scale innovative, secure systems for real high-impact detection and incident response. Triage and respond to security alerts from monitoring and external telemetry sources (e.g., Kibana, CrowdStrike, CloudTrail), build automations and integrations using Python, and maintain incident response procedures. Coordinate escalation of critical incidents and continuously improve detection coverage by reducing false positives and expanding MITRE ATT&CK-based coverage, including cloud security telemetry.

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MercadoLibre
MercadoLibre
1 week ago

Senior Security Engineer - Detection and Response

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Last checked: 5 hours agoStatus: Live

Job Summary

Design and scale innovative, secure systems for real high-impact detection and incident response. Triage and respond to security alerts from monitoring and external telemetry sources (e.g., Kibana, CrowdStrike, CloudTrail), build automations and integrations using Python, and maintain incident response procedures. Coordinate escalation of critical incidents and continuously improve detection coverage by reducing false positives and expanding MITRE ATT&CK-based coverage, including cloud security telemetry.
Location: Medellín
Workplace: Hybrid
Employment Type: Full time
Job Function: Cybersecurity
Seniority: Mid level

Key Responsibilities

  • •Analyze, triage, and respond to security alerts from monitoring and external telemetry sources such as Kibana, CrowdStrike, and CloudTrail.
  • •Develop and maintain detection-investigation automations, new integrations, and technical performance improvements using Python.
  • •Build and maintain incident response procedure manuals and response guides for cyber incidents.
  • •Coordinate escalation of critical incidents with internal cybersecurity teams and external vendors according to service levels.
  • •Identify malicious behavior patterns and propose continuous detection process improvements to reduce false positives and expand coverage aligned to MITRE ATT&CK.

Key Requirements

  • •Experience analyzing security alerts in a Security Operations Center (SOC) or incident response team.
  • •Strong Python development skills for automation, system integrations, and internal detection tools.
  • •Knowledge of threat detection frameworks and methods such as MITRE ATT&CK, indicators of compromise (IOCs), and cloud security telemetry/event correlation.
  • •Familiarity with blockchain ecosystems, virtual wallets, and smart contracts for protecting financial products.
Experience:2-8 years
Tech Stack:PythonKibanaCrowdStrikeCloudTrailSplunkActive DirectoryAPIMITRE ATT&CKEvent correlationBlockchainVirtual walletsSmart contracts

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