Compensation: For this principal development role, with 6+ years of experience, the compensation range is $5,000 - $9,500 USD per month (gross).

About the Role
We are seeking a hands‑on, high‑impact Senior Security Infrastructure Engineer to strengthen Sezzle’s security posture across cloud infrastructure, applications, and developer workflows. This role is idóneo for someone who thrives in a fast‑paced environment and wants to work on real‑world security problems at scale.

What You’ll Do
- Lead and 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.
- Build, operate, and mature SIEM/XDR capabilities, including log ingestion, detection rule development, alert tuning, and investigation workflows.
- Investigate and respond to security incidents across cloud infrastructure and applications, performing root‑cause analysis and driving long‑term fixes.




- Design and implement detection strategies for suspicious activity, including data exfiltration patterns using application and database telemetry.
- Lead and contribute to threat modeling exercises and security design reviews to identify risks early and strengthen architecture.
- Apply deep expertise in AWS and Kubernetes to design, secure, and improve resilient and secure cloud infrastructure at scale.
- Drive infrastructure and CI/CD hardening initiatives, with a focus on reducing software and container supply‑chain risk.
- Lead efforts to implement and improve dependency and container supply‑chain risk detection systems and controls.
- Partner closely with engineering teams to remediate vulnerabilities and improve secure development and deployment practices.
- Support and implement security controls aligned with PCI DSS, SOC 2, and other compliance requirements.
- Develop and implement automation (including AI where appropriate) to improve eff

📌 Senior Security Infrastructure Engineer (Estado de México)
🏢 Sezzle
📍 Estado de México