Senior Security Engineer, Detection & Response

Sezzle

. Build, operate, and mature SIEM/XDR capabilities, including log ingestion, detection rules, alert tuning, and investigation workflows .

Posted 11/3/2026full-timeRemote • ColombiaSenior💰 $5,000 - $9,500 per monthWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive experience in building and operating SIEM/XDR capabilities, including log ingestion, detection rule design, and incident response across cloud infrastructure. Proficient in vulnerability management, compliance frameworks such as PCI DSS and SOC 2, and leveraging AI for security operations.

Highest-signal resume keywords

SIEM Platform ExperienceCloud Security EngineeringVulnerability ManagementAWS Infrastructure KnowledgeAI-Forward Engineering

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Log IngestionDetection Rule DesignIncident ResponseVulnerability ScanningRoot Cause AnalysisThreat HuntingCloud Tooling InvestigationSecurity Vulnerability MitigationTelemetry Pipeline DevelopmentPenetration Testing

Tools & Technologies

WazuhSplunkELKAWSKubernetesLinuxAI ToolingClaude CodeCodexCursor

Industry Keywords

PCI DSSSOC 2Cloud-Native Security ControlsRegulatory AlignmentFintech ExperiencePayments ExperienceOWASPSANS

Tech Stack

Tools & technologies

AWSCloudKubernetesLinuxSplunk

About the role

Key responsibilities & impact

Build, operate, and mature SIEM/XDR capabilities, including log ingestion, detection rules, alert tuning, and investigation workflows
Design detection strategies for suspicious activity and data exfiltration using application and database telemetry
Extend audit and attribution coverage across Kubernetes, databases, SSO, and access-path telemetry
Investigate and respond to security incidents across cloud infrastructure and applications
Perform root cause analysis and drive long-term fixes
Run proactive threat hunts across cloud and identity planes
Build repeatable agentic threat-hunting workflows
Operate vulnerability management across infrastructure, platforms, and applications
Triage and validate external security findings, including bug bounty reports
Coordinate remediation with engineering teams
Contribute to threat modeling and security design reviews
Advise teams on AWS and Kubernetes remediation
Implement controls aligned with PCI DSS, SOC 2, and other compliance requirements
Develop automation, including AI, for security operations, detection, and response
Participate in the on-call rotation for detection and response and owned services
Report to the Director of Information Security and collaborate with security platform, network, and zero-trust engineers

Requirements

What you’ll need

6+ years of experience in security, software, or infrastructure engineering
Hands-on experience securing cloud-based production systems
Experience with SIEM platforms such as Wazuh, Splunk, or ELK
Experience designing and tuning detection rules, reducing alert noise, and improving investigation workflows
Strong hands-on vulnerability-management experience, including scanning, triage, validation, remediation coordination, and verification
Strong knowledge of AWS, Linux, and Kubernetes infrastructure
Ability to investigate issues using logs, cloud tooling, and system-level data
Experience assessing detection and logging implications in design reviews
Knowledge of common security vulnerabilities and mitigation strategies, including OWASP and SANS
Working knowledge of PCI DSS and SOC 2 compliance frameworks
Demonstrated AI-forward engineering using AI tooling such as Claude Code, Codex, Cursor, or custom LLM integrations
Preferred: AI-assisted workflow development, log-based detection, telemetry pipelines, penetration testing, cloud-native security controls, container/dependency security tools, regulatory alignment, and fintech or payments experience

Benefits

Comp & perks

Competitive gross salary of $5,000–$9,500 USD per month
AI-assisted engineering tools and workflows
Open-source-focused technology environment
Participation in a collaborative, purpose-driven culture
Remote work opportunity in Latin America