Senior Security Engineer, Defensive Infrastructure (Fintech)

TL;DR

Senior Security Engineer, Defensive Infrastructure (Fintech): Architecting and maintaining core defensive security platforms and cloud infrastructure for a global payments processor with an accent on automation and high-fidelity detection. Focus on building AI-assisted response pipelines, hardening AWS/EKS environments, and automating compliance controls.

Location: Hybrid in Madrid, Barcelona, Sao Paulo, Montevideo, Buenos Aires, or Bucharest

Company

hirify.global enables the biggest companies in the world to collect payments in 40 countries in emerging markets.

What you will do

• Architect and maintain the core defensive stack (SIEM, EDR, DLP, CASB) and manage the full log lifecycle from ingestion to alerting.
• Design secure-by-default AWS architectures, golden AMIs, and EKS base images as blueprints for engineering teams.
• Drive technical guardrails through Terraform modules, admission controllers, and automated drift detection.
• Collaborate with AI & Automation teams to feed platform signals into automated, AI-assisted response pipelines and SOAR workflows.
• Automate technical security controls and evidence collection for compliance standards including PCI DSS, SOX, and SOC2.
• Act as a strategic advisor during complex security events and integrate incident feedback into detection logic.

Requirements

• 6+ years of hands-on experience in Security Operations, Detection Engineering, and Cloud Security.
• Deep technical proficiency with SIEM, EDR, DLP, CSPM, and CNAPP at the architecture level.
• Advanced knowledge of AWS security architecture (IAM, SCPs, GuardDuty) and production EKS hardening.
• Expert-level proficiency in Terraform and Python or Go for infrastructure-as-code and workflow automation.
• Direct experience owning technical controls and evidence production for PCI DSS, SOX, or SOC2.
• Must be based in or able to work from Madrid, Barcelona, Sao Paulo, Montevideo, Buenos Aires, or Bucharest

Nice to have

• Experience with AI agents, LLM APIs, and automation frameworks.
• Familiarity with threat intelligence platforms and integrating intel into detection pipelines.
• MDR vendor co-management experience or involvement in purple-team/red-team exercises.
• Certifications such as GCIA, GCFA, OSCP, or AWS Security Specialty.

Culture & Benefits

• Flexible schedules driven by performance and impact.
• Opportunity to work within the dynamic and evolving Fintech industry.
• Monthly social budget for team bonding activities, both in-person and remote.
• hirify.global Houses: company-sponsored coworking retreats in various locations worldwide.
• Referral bonus program for bringing top talent to the team.