Senior Software Engineer, Security Platform

Sezzle

. Design, build, and operate security engineering services primarily in Golang and Python on AWS and Kubernetes .

Posted 10/14/2026full-timeRemote • ArgentinaSenior💰 $5,000 - $9,500 per monthWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in designing and operating security engineering services using Golang and Python on AWS and Kubernetes, with a strong focus on event-driven systems and web application security. Proficient in implementing CI/CD pipelines and security gates, while collaborating effectively with cross-functional teams.

Highest-signal resume keywords

Golang ProficiencyEvent-Driven SystemsCI/CD Pipeline ToolingWeb Application SecuritySAST and SCA Tooling

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

GolangPythonEvent-Driven SystemsCI/CD Pipeline ToolingWeb Application SecuritySASTSCASecret ScanningAWSKubernetes

Tools & Technologies

GitLab CISemgrepCodeQLSnykTrivyGrypeGitleaks

Industry Keywords

FintechPaymentsBNPLConsumer LendingPCI DSSSOC 2Software Supply-Chain IntegritySBOM PipelinesPolicy-as-CodeBug Bounty

Tech Stack

Tools & technologies

AWSKubernetesPythonGo

About the role

Key responsibilities & impact

Design, build, and operate security engineering services primarily in Golang and Python on AWS and Kubernetes
Maintain, harden, and retire existing services
Own the NATS-based event-driven platform, including contracts, consumers, delivery guarantees, and observability
Integrate scanners, finding systems of record, tickets, and metrics
Own security gates for SAST, SCA, secret detection, container scanning, and IaC scanning
Select and tune scanners, manage suppression workflows, reduce false positives, and roll out enforcing gates
Build CI review agents, automated finding triage and verification, and remediation helpers
Automate triage-to-remediation workflows, including reproduction context, fix guidance, and routing
Participate in threat modeling and secure design reviews
Participate in the on-call rotation
Report to the Director of Information Security and collaborate with detection and response and network and zero trust engineers

Requirements

What you’ll need

6+ years of professional software engineering experience, including significant backend experience
Deployed significant changes to a production application in 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, 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 the OWASP Top 10 in real code
Hands-on experience with SAST, SCA, and secret-scanning tooling, such as Semgrep, CodeQL, Snyk, Trivy, Grype, and gitleaks
Demonstrated AI-forward engineering using AI tooling and building agentic workflows adopted by other engineers
Working knowledge of AWS and Kubernetes
Preferred: experience in fintech, payments, BNPL, or consumer lending
Preferred: working knowledge of PCI DSS and SOC 2
Preferred: software supply-chain integrity, including SBOM pipelines, dependency governance, artifact signing, and provenance
Preferred: familiarity with policy-as-code and admission control, such as OPA, Kyverno, and conftest
Preferred: exposure to bug bounty or external vulnerability report triage
Preferred: experience with system-level threat modeling