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Senior Security Engineer, Detection & Response

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Senior Security Engineer, Detection & Response in Remote new

  • Turkey

Responsibilities

  • Build and operate 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 paths while meeting compliance retention requirements.
  • Investigate and respond to security incidents, perform root-cause analysis, and drive long-term remediation.
  • Conduct proactive threat hunts across cloud and identity environments and build repeatable agentic hunting workflows.
  • Manage vulnerability scanning, dependency analysis, external findings, validation, remediation coordination, and verification.
  • Triage bug-bounty and other external security findings and coordinate remediation.
  • Contribute to threat modeling and security design reviews for detection, logging, and incident-response implications.
  • Advise teams on AWS and Kubernetes security and implement controls aligned with PCI DSS, SOC 2, and other compliance requirements.
  • Develop automation, including AI-assisted workflows, to improve security operations, detection, and response.
  • Participate in the on-call rotation for detection and response and owned services.

Requirements

  • 6+ years of experience in security, software, or infrastructure engineering, including hands-on experience securing cloud-based production systems.
  • Experience with SIEM platforms such as Wazuh, Splunk, or ELK for detection engineering, monitoring, and incident response.
  • Experience designing and tuning detection rules, reducing alert noise, and improving investigation workflows.
  • Hands-on vulnerability-management experience covering scanning, triage, validation, remediation coordination, and verification.
  • Strong knowledge of AWS, Linux, and Kubernetes infrastructure, security architecture, and operational best practices.
  • Ability to investigate issues using logs, cloud tooling, and system-level data.
  • Experience assessing detection and logging implications during system design reviews.
  • Knowledge of common security vulnerabilities and mitigation strategies, including OWASP and SANS guidance.
  • Working knowledge of PCI DSS and SOC 2 logging, monitoring, and evidence expectations.
  • Demonstrated practical use of AI tooling such as Claude Code, Codex, Cursor, or custom LLM integrations.
  • Preferred experience building AI-assisted triage, enrichment, or threat-hunting workflows adopted by others.
  • Preferred familiarity with log-based detection, telemetry pipelines, security analytics, internal penetration testing, adversarial exercises, cloud-native security controls, IAM, network segmentation, container security, and regulatory compliance.
  • Preferred experience operating findings from Snyk, Trivy, or Grype and working in fintech, payments, or other regulated environments.

Benefits

  • Full-time role with remote work indicated by the #Li-remote posting tag.
  • Compensation is listed as $5,000-$9,500 USD per month, based on experience level.
  • Participation in an on-call rotation is required.
  • Workplace culture includes musicians, yogis, cyclists, chefs, golfers, dog-lovers, and rock-climbers.

Salary: DOE

Sezzle

Sezzle builds a buy now, pay later platform that lets consumers split purchases into interest-free installments online and in stores, integrated with e-commerce and retail merchants. The company earns revenue from merchant fees and related consumer charges and provides underwriting and payment pr...

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