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 • MexicoSenior💰 $5,000 - $9,500 per monthWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in security engineering services with a strong focus on Golang and Python, alongside hands-on experience in AWS, Kubernetes, and CI/CD pipeline tooling. Proficient in web application security practices and event-driven systems, with a solid understanding of security gates and automated workflows.

Highest-signal resume keywords

Golang ProficiencyAWS ExperienceCI/CD Pipeline ToolingWeb Application Security KnowledgeEvent-Driven Systems Experience

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

GolangPythonAWSKubernetesNATSGitLab CISASTSCAWeb Application SecurityEvent-Driven Systems

Tools & Technologies

SemgrepCodeQLSnykTrivyGrypeGitleaks

Industry Keywords

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

Tech Stack

Tools & technologies

AWSKafkaKubernetesPythonGo

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 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 SAST, SCA, secret detection, container, and IaC security gates in GitLab CI
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 such as NATS or Kafka
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
Hands-on experience with SAST, SCA, and secret-scanning tooling such as Semgrep, CodeQL, Snyk, Trivy, Grype, and gitleaks
Demonstrated current use of AI tooling and experience 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 experience, including SBOM pipelines, dependency governance, artifact signing, and provenance
Preferred: familiarity with policy-as-code and admission control tools such as OPA, Kyverno, and conftest
Preferred: exposure to bug bounty or external vulnerability report triage
Preferred: experience with system-level threat modeling

Benefits

Comp & perks

Fully remote work
Work from where you do your best work
Open-source-focused engineering environment
AI-assisted engineering tools and workflows