Network Architect

Role Summary

We are seeking an experienced and visionary Network Architect to join our Global Infrastructure team at

the GCC in Vizag, India. This strategic role is responsible for defining and driving the global network

architecture strategy—spanning campus, data centre, cloud, and OT environments—with a strong

emphasis on Zero Trust security, SD-WAN, Zscaler platforms, and AI-driven network analytics. The

Architect will serve as the highest technical authority for network design, ensuring scalability, security,

and alignment with Eisai's global digital transformation goals.

Why This Role Exists

As Eisai accelerates its global digital transformation, there is a critical need for an authoritative network

architecture function that can unify diverse, multi-region network environments under a coherent,

future-proof design framework. This role exists to lead that architectural vision—reducing complexity,

enforcing global standards, and enabling the business to operate securely and efficiently across all

regions.

KEY RESPONSIBILITIES

1. Network Architecture & Strategy

 Define and own the global enterprise network architecture strategy covering campus, data centre,

cloud (AWS/Azure), and OT environments.

 Lead the design of scalable, resilient, and secure network solutions aligned with business and digital

transformation objectives.

 Develop and govern global technology standards for routing, switching, Wi-Fi, SD-WAN, cloud

interconnectivity, and network security.

 Architect secure cloud networking using AWS Transit Gateways, VPCs, and Cloud WAN, ensuring

seamless integration with on-premises infrastructure.

 Establish and drive the adoption of Zero Trust architecture principles, including macro and micro-

segmentation for lab, OT, and campus networks.

 Lead the evaluation, selection, and standardization of emerging technologies including Gen AI and AI

analytics for network optimization.

 Define the strategic roadmap for SD-WAN, Zscaler (ZIA/ZPA), NAC, and NDR platforms across all

global regions.

 Produce high-quality architecture documentation including HLD, LLD, standards, and reference

architectures.

2. Security Architecture & Compliance

 Design and govern end-to-end network security architecture including Zscaler ZIA/ZPA, Cisco

ISE/NAC, Palo Alto, FortiGate, and NDR platforms.

 Lead implementation of Zero Trust principles, micro-segmentation policies, and NGFW rule

governance across all environments.

 Collaborate with Cyber Security, SOC/SIEM, and Compliance teams to ensure network designs meet

regulatory and audit requirements.

 Define and review firewall policies, access control standards, and security baselines for all platforms.

 Drive architecture reviews and threat-modelling exercises to proactively identify and mitigate

network security risks.

3. Technical Ownership & Governance

 Serve as the ultimate technical escalation point (Level 4) for complex network architecture and

design issues.

 Conduct architecture review boards (ARBs) and review proposed changes for alignment with global

standards.

 Govern lifecycle management strategy for network platforms including Cisco, Palo Alto, FortiGate,

and Zscaler.

 Drive automation initiatives in network provisioning, monitoring, and configuration management.

 Evaluate and recommend vendor solutions, manage proof-of-concept (PoC) engagements, and

provide technical guidance on procurement.

4. Stakeholder Engagement & Leadership

 Partner with Director-level stakeholders, Business Relationship Managers (BRMs), Cloud Operations,

Server/Storage, and Security teams to align network architecture with business priorities.

 Represent the Global Network team in cross-functional governance forums and global infrastructure

planning meetings.

 Mentor and guide Network Engineers and senior engineers, providing technical direction and career

development support.

 Communicate complex architectural concepts clearly to both technical and non-technical audiences

across global regions.

 Coordinate with regional teams in APAC, EMEA, and the Americas to ensure consistent architecture

adoption and compliance.

5. Innovation & Continuous Improvement

 Research and assess emerging network technologies, including AI/ML-driven analytics, intent-based

networking, and next-generation security platforms.

 Lead continuous improvement initiatives to optimize network performance, cost efficiency, and

security posture.

 Develop and maintain the 3–5 year global network technology roadmap aligned with Eisai's strategic

IT objectives.

 Establish KPIs and success metrics for architecture delivery, platform performance, and security

compliance.

REQUIRED SKILLS & EXPERIENCE

Experience Requirements

 Total Experience: 10+ years in enterprise network engineering and architecture.

 Specialized Experience: 5+ years in a network architecture or senior design role within a global,

multi-region enterprise.

 Leadership Experience: 3+ years leading technical teams or architecture functions.

Technical Expertise – Must Have

 Expert-level knowledge of Zscaler Internet Access (ZIA) and Zscaler Private Access (ZPA) design and

deployment.

 Deep expertise in Cisco routing and switching, SD-WAN architecture, and global WAN design.

 Proven experience designing and governing multi-vendor NGFW environments: Cisco, Palo Alto

Networks, and FortiGate.

 Strong experience architecting cloud networking on AWS (Transit Gateways, VPCs, Cloud WAN) and

Microsoft Azure.

 Mastery of Zero Trust architecture, macro/micro-segmentation, Cisco ISE/NAC, and NDR solutions.

 Experience with AI analytics and Gen AI applications for network automation and operations

optimization.

 Proficiency in network monitoring and diagnostics platforms including ThousandEyes and packet

capture tools.

 Strong documentation skills: HLD, LLD, reference architectures, and global standards development.

Soft Skills

 Exceptional verbal and written communication skills; ability to present to C-level and Director

stakeholders.

 Strong analytical and structured problem-solving capabilities for complex, multi-region network

challenges.

 Ability to influence without direct authority and drive consensus across global, cross-functional

teams.

 Self-directed with the ability to manage multiple architecture workstreams simultaneously.

 Collaborative mindset with a 'One Team' approach across all global regions and functions.

PREFERRED QUALIFICATIONS

 Experience in regulated industries such as Pharmaceuticals or life sciences (GxP compliance

exposure preferred).

 Familiarity with ITIL, Agile, or DevOps methodologies within an infrastructure context.

 Experience with intent-based networking and AI/ML-driven network management platforms.

 Prior experience managing or collaborating with managed service providers (MSPs) for global

LAN/WAN operations.

 Exposure to OT (Operational Technology) and lab network environments.

 Experience developing 3–5 year technology roadmaps and presenting to senior leadership.

EDUCATION & CERTIFICATIONS

Education

 Bachelor's degree in Computer Science, Information Technology, Network Engineering, or a related

field (required).

 Master's degree in a relevant discipline (preferred).

Certifications

 Cisco CCIE (Routing & Switching or Enterprise Infrastructure) – Highly preferred.

 Cisco CCNP Enterprise or equivalent – Required if CCIE not held.

 Zscaler Certified Cloud Professional (ZCCP) or equivalent – Preferred.

 AWS Certified Advanced Networking – Specialty – Preferred.

 Palo Alto Networks Certified Network Security Engineer (PCNSE) – Preferred.

 Fortinet NSE 7 or above – Preferred.

SUCCESS INDICATORS (FOR RECRUITER UNDERSTANDING)

30–60–90 Day Milestones

 30 Days: Understand the current global network architecture, key platforms, and existing

documentation. Build relationships with global stakeholders.

 60 Days: Identify architectural gaps, risks, and improvement opportunities. Present initial findings

and recommendations to the Director, Global Network Lead.

 90 Days: Define a prioritized architecture roadmap and begin driving at least one strategic

architecture initiative.

6 & 12 Month Goals

 6 Months: Complete a global architecture standards refresh; lead at least one major platform

deployment or cloud networking initiative.

 12 Months: Achieve measurable improvements in network security posture, platform

standardization, and operational efficiency. Deliver the 3-year technology roadmap.

Key Performance Indicators (KPIs)

 % adoption of global network architecture standards across all regions.

 Reduction in critical network incidents attributed to design/architecture gaps.

 On-time delivery of architecture projects and roadmap milestones.

 Stakeholder satisfaction scores from cross-functional partners.

 Number of architecture reviews conducted and documented.

WORKING RELATIONSHIPS

Reports To: Director, Global Network Lead

Direct Reports: Senior Network Engineers / Network Engineers (indirect leadership)

Key Stakeholders: Global IT Leadership, Cyber Security & SOC/SIEM Teams, Cloud Operations, BRMs,

Regional IT Leads (APAC, EMEA, Americas), Managed Service Providers