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Security Engineer

ARQ· Engineering
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Hybrid (London / Krakow / Buenos Aires / Bogota / New York)Full-timePosted 3mo ago

About the role

Security Engineer at ARQ, a fintech platform for affluent consumers in the Americas. Role involves building and maturing security controls across cloud, data, and applications, with a focus on incident response, DLP, AI/agentic risk management, and third-party security.

Responsibilities

  • Build and improve SIEM detection rules, alert pipelines, and automated response playbooks (Datadog SIEM, CrowdStrike, Cloudflare)
  • Contribute to incident response readiness, including IR playbooks, tabletop exercises, and forensic procedures
  • Support DLP strategy and data protection controls across Google Workspace, Slack, and internal tooling
  • Conduct cloud security assessments across AWS and Kubernetes environments
  • Drive application security initiatives: threat modelling, secure code review support, API testing, and security pipeline improvements
  • Assess and secure AI/agentic workflows across the company — reviewing prompts, preventing destructive actions, and controlling data exposure
  • Establish and run the vendor security assessment process — building a scalable due diligence framework for third-party onboarding

Qualifications

  • 4–7 years in information security, ideally having built or significantly shaped the security function at a startup or high-growth company - you've been the person who sets things up, not just maintains them
  • Hands-on experience with cloud infrastructure security (AWS, Kubernetes)
  • Working knowledge of SIEM platforms and detection engineering - you've written detection rules, not just consumed alerts
  • Familiarity with application security practices: threat modelling, secure code review, CI/CD pipeline hardening, and API security testing
  • Experience with endpoint security tooling (EDR/XDR) and identity & access management in a SaaS-heavy environment (Google Workspace, Okta/Cloudflare Access, SSO/SCIM)
  • Ability to assess and secure emerging AI/agentic tooling - you understand the risks of LLM integrations, MCP servers, and automated workflows, and can define practical guardrails
  • Experience running or contributing to vendor security assessments and third-party due diligence
  • Strong written and verbal communication
  • Business fluent in English; Spanish or Portuguese a plus

Skills

Required:SIEM, detection engineeringCloud security (AWS, Kubernetes)Incident response & IR playbooksDLP and data protectionApplication securityAI/agentic tooling securityVendor/security assessmentsCommunicationEnglish fluency
Last updated Oct 25, 2026. Interested? Apply on the company site.
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About ARQ

The global financial platform for affluent consumers in the Americas.

ARQ opens the world’s strongest assets and markets to travelers, investors and professionals across the Americas—so they can spend, receive, send and grow their money wherever they are. Formerly known as DolarApp.

FintechCrypto / Web3
Company profileWebsite

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