Security Engineer, Mid
Core
Founding Security Engineer building ARQ's security function in Brazil, covering application security, security operations, and governance/risk/compliance.
Role type
Mid-level Security Engineer (founding role)
Builds
Security detection rules, incident response playbooks, and cloud security assessments for fintech infrastructure.
Domain
Fintech, Cloud Security, Application Security
Deliverable
production ML models | product features | dashboards & analysis | infrastructure
Required skills
Cloud security (AWS), Kubernetes fundamentals, SIEM detection engineering, application security (threat modeling, secure code review, API testing), incident response, vendor security assessments
Preferred skills
AI/agentic workflow security (LLM integrations, MCP servers), regulated fintech experience
Technologies
AWS, Kubernetes, Datadog SIEM, CrowdStrike, Cloudflare
Responsibilities
Support application security work including threat modelling, secure code review, and API security testing; Build and maintain SIEM detection rules and alert pipelines; Support incident response by triaging alerts and executing playbooks; Conduct cloud security assessments across AWS and Kubernetes environments; Execute vendor security assessments using the due diligence framework
Seniority
Mid-level, hands-on IC with founding responsibilities
