Senior Security Infrastructure Engineer

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

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 ideal for someone who thrives in a fast‑paced environment and wants to work on real‑world security problems at scale.

• 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...