Senior Software Engineer, Security Platform

🔥 1 hour ago

🇨🇴 Colombia – Remote

💵 $5k - $9.5k / month

⏰ Full Time

🟠 Senior

🏗️ Platform Engineer

👻 Ghost score 21%

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Sezzle

WebsiteLinkedInAll Job Openings

201 - 500 employees

Founded 2016

💳 Fintech

👥 B2C

🛍️ eCommerce

Fintech • B2C • eCommerce

Sezzle is a financial technology company that offers a "buy now, pay later" service, allowing consumers to purchase products and pay for them in four interest-free installments over six weeks. The Sezzle app provides users with a flexible financing alternative to traditional credit cards, enabling instant approval decisions without impacting credit scores. Sezzle partners with various top brands, including Amazon, Walmart, and Target, to offer in-app and in-store payment options. The company's mission is to empower consumers financially by providing more financial freedom and control. It is available as a mobile app, with millions of downloads and high user ratings, and works towards accessibility and inclusion on its platform.

📋 Description

• Design, build, and operate security engineering services primarily in Golang and Python on AWS and Kubernetes • Maintain, harden, and retire existing security services • Own the NATS event-driven platform, including contracts, consumers, delivery guarantees, and observability • Integrate scanners, the finding system 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 enforcement tooling • 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 for owned services • Report to the Director of Information Security and collaborate with detection and response, network, and zero-trust engineers

🎯 Requirements

• 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 experience using AI tooling and building adopted agentic workflows • Working knowledge of AWS and Kubernetes • Preferred: experience in fintech, payments, BNPL, or consumer lending, especially cardholder-data or regulated systems • Preferred: working knowledge of PCI DSS and SOC 2 • Preferred: software supply-chain integrity experience, 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: system-level threat modeling experience

🏖️ Benefits

• Fully remote role • Work from where you do your best work • Opportunity to work with AI-assisted engineering and reusable agentic workflows • Use of open-source technologies and opportunity to build before buying

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