Senior Security Infrastructure Engineer - Sezzle

Key Responsibilities

• Architect and deploy secure, highly available cloud infrastructure across AWS, Azure, and GCP, ensuring alignment with industry best practices and regulatory requirements.
• Implement and maintain CI/CD pipelines, infrastructure-as-code (IaC) solutions, and automated security controls to accelerate delivery while minimizing risk.
• Collaborate with development, operations, and compliance teams to embed security into the software development lifecycle, conducting threat modeling, code reviews, and vulnerability assessments.
• Monitor, analyze, and respond to security incidents, leveraging SIEM, log aggregation, and threat intelligence platforms to maintain a robust security posture.
• Lead continuous improvement initiatives, including automation of security hardening, patch management, and configuration drift detection.

Requirements

• 8+ years of experience in security engineering, cloud architecture, and DevOps practices.
• Proficiency with AWS, Azure, or GCP, and strong knowledge of IaC tools such as Terraform or CloudFormation.
• Hands‑on experience with container orchestration (Kubernetes), CI/CD tools (GitHub Actions, Jenkins, GitLab CI), and security automation (OPA, Sentinel).
• Deep understanding of network security, identity & access management, encryption, and compliance frameworks (SOC 2, ISO 27001, PCI‑DSS).
• Excellent communication skills and a proven track record of mentoring and leading cross‑functional teams.