Senior Software Engineer, Security Platform

Sezzle seeks a Senior Software Engineer, Security Platform to build and own the security platform: services for discovery, scanning, triage, and routing of security findings; event-driven bus; CI security gates. This is a development role on the security team. Responsibilities include designing, building, and operating services in Go and Python on Kubernetes, owning the NATS-based event platform, and integrating security gates (SAST, SCA, etc.). The role involves building agentic security workfl

6+ years professional software engineering experience, strong proficiency in Golang and working Python, hands-on experience with event-driven systems (NATS, Kafka), CI/CD pipeline tooling (GitLab CI preferred), web application security (OWASP Top 10), SAST/SCA/secret-scanning tooling (Semgrep, CodeQL, Snyk, etc.), AI-forward engineering with agentic workflows, working knowledge of AWS and Kubernetes. Preferred: fintech experience, PCI DSS/SOC 2, supply-chain security, policy-as-code, bug bounty