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Network Security Architect

Security Engineer • Remote • Full-time • 📍 Buenos Aires

Miratech is looking for a Network Security Architect to lead security architecture for a large-scale network consolidation program at a US-based Tier-2 Telco, owning security design, firewall rule consolidation, and policy definition.

Responsibilities

  • Translate enterprise-level security architecture into actionable, site-level security blueprints
  • Define and document the target-state architecture for the Network Security domain, including firewall rule consolidation, VRF-based macro-segmentation, and DDoS mitigation strategies
  • Analyze and optimize legacy security policies by consolidating overlapping firewall rules into standardized templates
  • Collaborate with client Security and CISO teams, supporting design validation, risk alignment, and compliance with regulatory frameworks (e.g., CISA, HIPAA)
  • Identify and resolve complex IP subnet overlaps and security-related routing conflicts
  • Define security exit criteria and guardrails as part of the migration factory Definition of Done (DoD)
  • Contribute to architecture governance, including architecture reviews, design approvals, and development of enterprise standards and reference architectures

Requirements

  • 10+ years in enterprise Network Security Architecture, with strong focus on large-scale firewall migrations and rule consolidation
  • Deep expertise in NAT/PAT, VRF segmentation, Zero Trust frameworks, and enterprise firewall platforms (Palo Alto, Fortinet, Cisco)
  • Proven experience designing and integrating DDoS mitigation and traffic scrubbing solutions at network edges
  • Strong ability to translate complex security policies into standardized, reusable Low-Level Design (LLD) templates suitable for automated deployment
  • Solid understanding of compliance-driven architecture, aligning technical designs to regulatory frameworks without owning final approvals
  • Experience working within secure client environments (VDI/VPN) and adhering to strict change control processes without direct production access
  • English proficiency at B2 (Upper-Intermediate) to C1 (Advanced) level, with strong spoken communication skills

Soft skills

Strong spoken communication skills

What we offer

  • Culture of Relentless Performance
  • Competitive pay and benefits, including health insurance and a relocation program
  • Work From Anywhere culture
  • Growth mindset opportunities
  • Global impact on projects for top global clients
  • Welcoming multicultural environment
  • Social sustainability values across five pillars

About the company

Miratech is a global IT services and consulting company that brings together enterprise and start-up innovation, supporting digital transformation for some of the world's largest enterprises. Operating since 1989 with a Relentless Performance culture, over 99% of its engagements succeed. Miratech operates in over 25 countries across 5 continents, employs nearly 1,000 full-time professionals, and grows more than 25% annually.

Languages: Angol: Középfok-Felsőfok (B2-C1)

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