Lead Consultant - Network Security

About the Position

Lead Consultant - Network Security

We are seeking a Lead Consultant who will design, build, and manage secure, compliant network segmentation connecting regional environments to Global networks. This position utilizes a standardized security toolset, including Check Point Security Gateways, Palo Alto Networks next-generation firewalls, Zscaler Internet Access (ZIA), Zscaler Private Access (ZPA), and Cloudflare for DDoS protection, WAF, and application security. The role combines architectural design, hands-on engineering, automation, and L3/L4 operational leadership to provide policy-driven connectivity that meets strict regulatory and operational standards.

Responsibilities

• Establish trust zones, routing boundaries, and inter-zone controls across regional and Global Networks, addressing north-south and east-west traffic, micro-segmentation for sensitive layers, and explicit cross-border allow-lists
• Create HLD/LLD documentation, threat models, and control mappings that align with internal standards and regional regulations to support secure communication between regional and Global customer sites
• Build and manage dual-vendor firewall perimeters with defined control distribution, HA/cluster architecture, predictable failover, NAT domain strategy, SSL/TLS inspection governance, and jurisdiction-tuned Threat Prevention/WildFire/URL filtering
• Configure ZIA to provide identity-aware egress controls, jurisdiction-sensitive SSL inspection bypasses, inline CASB/DLP, and governance for approved SaaS applications
• Deploy ZPA to enable per-application zero-trust access, including connector placement, posture verification, conditional access, and app segmentation to replace legacy VPN solutions where possible
• Architect and implement Site-to-Site VPN (IPSec), Cloud Interconnect/Partner Interconnect equivalents, and BGP-based dual-tunnel HA per site to support hybrid cloud connectivity
• Roll out Cloudflare Magic Transit/Magic WAN, WAF Management, and rate limiting for internet-facing services, integrating with on-premises perimeters for layered protection
• Design SD-WAN/MPLS/SASE pathways featuring policy-based routing, robust encryption, and jurisdiction-specific key custody and rotation practices
• Convert regulatory and internal control mandates into actionable technical controls covering logging, data residency, TLS inspection scope, and lawful intercept requirements
• Consolidate telemetry from firewall, Zscaler, and Cloudflare platforms into SIEM following regional data handling policies, and develop detection rules for cross-border anomalies and policy drift
• Direct L3/L4 incident response efforts, coordinate containment measures, and oversee RCAs with documented corrective actions
• Oversee firewall, Zscaler, and Cloudflare policy management using Terraform/Ansible and vendor APIs, and establish CI/CD pipelines incorporating policy linting, unit testing, and path simulation

Requirements

• 5+ years of experience in network security architecture and operations, specializing in cross-border or multi-region connectivity
• Expertise in Check Point Security Gateways, Palo Alto Networks next-generation firewalls, and Panorama management
• Proficiency in Zscaler Internet Access (ZIA) and Zscaler Private Access (ZPA) for zero-trust architecture
• Skills in Cloudflare Magic Transit/Magic WAN, WAF Management, and DDoS mitigation strategies
• Knowledge of cloud hybrid connectivity, including Site-to-Site VPN, Cloud Interconnect, and BGP routing
• Background in SD-WAN, MPLS, and SASE architectures with policy-based routing and strong encryption protocols
• Understanding of regulatory and compliance frameworks relevant to data residency, TLS inspection, and lawful intercept
• Familiarity with SIEM platforms and telemetry normalization for cross-border security monitoring
• Competency in Terraform, Ansible, and vendor APIs for policy-as-code and CI/CD pipeline integration
• Capability to lead L3/L4 incident response and conduct root cause analysis with corrective action planning
• English proficiency at B2 level or higher

We Offer

• Engineering Heritage: Best-in-class experts sharing a culture of engineering excellence and tackling complex engineering challenges for over 30 years
• Advanced Tech Stack: Innovative projects where you can apply or enhance your expertise in Cloud, Data, AI, and other emerging technologies
• World-Class Clients: Work closely with 340+ of the Forbes Global 2000 on creating disruptive solutions that make a global impact
• Professional Growth: Exceptional support for career development with comprehensive resources for upskilling or reskilling in pioneering practices
• GenAI Community: Strong AI competencies with 600+ experts across 55+ locations driving GenAI-enabled transformation journeys
• Entrepreneurial Culture: If you're passionate and dedicated to improving business transformation, we provide the support you need to bring your ideas to life
• Hybrid Setup: The flexibility to work from any location in Lithuania, whether it's your home or our dynamic offices in Vilnius and Kaunas
• Other Benefits: Additional vacation and trust days, private health insurance, Employee Stock Purchase Plan and more

About the Company

We are a leading consultancy firm specializing in network security architecture and operations. Our team of experts is dedicated to providing secure, compliant, and innovative solutions to our global clients. With a strong focus on engineering excellence and a commitment to professional growth, we offer a dynamic and supportive environment for our employees.