Sezzle

Senior Software Engineer, Security Platform

Sezzle
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14 hours ago
Remote, ArgentinaSenior

Responsibilities

  • Design, build, operate, harden, and retire security engineering services in Golang and Python on AWS and Kubernetes.
  • Own the NATS-based event platform, including contracts, consumers, delivery guarantees, replay, back-pressure, and observability.
  • Integrate scanners, the finding system of record, tickets, metrics, remediation workflows, and examination evidence.
  • Deliver and operate GitLab CI security gates covering SAST, SCA, secret detection, container scanning, and IaC scanning.
  • Build agentic CI review, finding triage, verification, remediation, and routing workflows.
  • Participate in threat modeling, secure design reviews, and the on-call rotation for owned services.

Requirements

  • 6+ years of professional software engineering experience, including significant backend experience.
  • Recent experience deploying significant changes to a production application within the past 30 days.
  • Strong proficiency in Golang and working proficiency in Python.
  • Hands-on experience building and operating event-driven or message-based systems such as NATS or Kafka, including contracts, idempotent consumers, replay, and back-pressure.
  • Hands-on experience building and operating CI/CD pipeline tooling; GitLab CI at fleet scale is a strong plus.
  • Hands-on web application security knowledge, including applying the OWASP Top 10 in real code.
  • Experience with SAST, SCA, and secret-scanning tools such as Semgrep, CodeQL, Snyk, Trivy, Grype, and gitleaks.
  • Demonstrated use of AI tooling and experience building agentic workflows adopted by other engineers.
  • Working knowledge of AWS and Kubernetes.
  • Preferred qualifications include fintech or regulated-systems experience, PCI DSS and SOC 2 knowledge, software supply-chain integrity, SBOM pipelines, dependency governance, artifact signing, provenance, policy-as-code, admission control, vulnerability report triage, and system-level threat modeling.

Benefits

  • Fully remote work arrangement.
  • Full-time employment.
  • Monthly gross compensation is stated in USD.

Tech Stack

Apache KafkaAWSElasticsearchGitGitLab CI/CDGoKubernetesMySQLPostgreSQLPythonReactReact NativeTypeScript

Categories

Sezzle

About Sezzle

201-500 employees

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 processing services. Founded in 2016 and headquartered in Minneapolis, Sezzle is a public company dual-listed on Nasdaq and the ASX.

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