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-timeRemoteSenior💰 $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, with a strong focus on cloud security, vulnerability management, and compliance with standards such as PCI DSS and SOC 2. Proficient in developing automation for security operations and conducting thorough investigations of security incidents.

Highest-signal resume keywords

SIEM Platform ExperienceCloud Security ExpertiseVulnerability ManagementAWS and Kubernetes SecurityCompliance Knowledge

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Log IngestionDetection Rules DesignAlert TuningInvestigation WorkflowsRoot Cause AnalysisThreat HuntingVulnerability ManagementSecurity Incident ResponseAutomation DevelopmentSecurity Design Reviews

Tools & Technologies

WazuhSplunkELKAWSLinuxAI ToolsCloud ToolingTelemetry PipelinesContainer Security ToolsDependency Security Tools

Industry Keywords

PCI DSSSOC 2OWASPSANSFintechPaymentsCloud InfrastructureSecurity VulnerabilitiesRegulatory ComplianceIncident Investigation

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 patterns
Extend audit and attribution coverage across Kubernetes, databases, SSO, and access paths
Investigate and respond to security incidents across cloud infrastructure and applications
Perform root cause analysis and drive long-term remediation
Run proactive threat hunts across cloud and identity environments
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 security remediation
Support security 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 experience in vulnerability management, 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 experience using tools such as Claude Code, Codex, Cursor, or custom LLM integrations
Preferred: AI-assisted workflow development, log-based detection, telemetry pipelines, internal penetration testing, cloud-native security controls, container and dependency security tools, regulatory compliance, and fintech or payments experience

Benefits

Comp & perks

Competitive gross salary of $5,000–$9,500 USD per month based on experience
AI-assisted engineering and agentic workflow opportunities
Remote work in Latin America
Participation in an on-call rotation