Senior Security Engineer: Detection & Response - Remote

Sezzle; Santiago; A distancia; CLP 54.975.000 - 104.453.000; Jornada completa

Descripción de la vacante

Sezzle is seeking a hands-on Senior Security Engineer, Detection & Response, to strengthen security operations across cloud infrastructure and applications. You will own SIEM/XDR capabilities, incident response, and vulnerability management, leading investigations and long‑term fixes.

This role requires 6+ years in security or related fields and a proven track record with cloud security and telemetry. Join Sezzle's fast‑paced fintech environment where AI-assisted engineering is standard and

Formación

• 6+ years of experience in security, software, or infrastructure engineering.
• Experience with SIEM platforms (e.g., Wazuh, Splunk, ELK) for detection engineering, monitoring, and incident response
• Experience designing and tuning detection rules, reducing alert noise, and improving investigation workflows
• Strong knowledge of AWS, Linux, and Kubernetes infrastructure, including security architecture and operational best practices
• Familiarity with PCI DSS and SOC 2, particularly logging, monitoring, and evidence expectations

Responsabilidades

• Build, operate, and mature SIEM/XDR capabilities, including log ingestion, detection rule development, alert tuning, and investigation workflows
• Design and implement detection strategies for suspicious activity, including data exfiltration patterns using application and database telemetry
• Extend audit and attribution coverage across the estate — Kubernetes audit logs, database audit logging, SSO and access‑path telemetry
• Investigate and respond to security incidents across cloud infrastructure and applications, performing root cause analysis and driving long‑term fixes
• Run proactive threat hunts across cloud and identity planes, building agentic hunting workflows that make hunts repeatable
• Operate vulnerability management across infrastructure, platforms, and applications - including internal scans, dependency analysis, and external findings, validating true positives and driving remediation with engineering teams
• Triage and validate external security findings (including bug bounty reports), distinguishing true positives and coordinating remediation
• Contribute to threat modeling and security design reviews for the detection, logging, and incident‑response implications of new systems
• Apply strong AWS and Kubernetes judgment to secure the systems you operate and advise owning teams on remediation
• Support and implement security controls aligned with PCI DSS, SOC 2, and other compliance requirements — with your logging and detection work producing the audit evidence as a by‑product
• Develop and implement automation (including AI) to improve efficiency in security operations, detection, and response
• Participate in the on‑call rotation for detection and response and the services you own

Conocimientos

SIEM platforms

AWS

Kubernetes

Incident response

Threat hunting

Vulnerability management

Golang

Python

Typescript

ELK

Splunk

Snyk

Trivy

Grype

Git

Gitlab

Herramientas

Wazuh

Splunk

ELK

Snyk

Trivy

Grype

Git

Gitlab

Descripción del empleo

Sezzle is seeking a hands-on Senior Security Engineer, Detection & Response, to strengthen security operations across cloud infrastructure and applications. You will own SIEM/XDR capabilities, incident response, and vulnerability management, leading investigations and long‑term fixes.

This role requires 6+ years in security or related fields and a proven track record with cloud security and telemetry. Join Sezzle's fast‑paced fintech environment where AI-assisted engineering is standard and