Network Security Architect

Role & responsibilities

First preference: Juniper devices ; Second preference: Cisco devices

• **Networking (L2/L3):**Switching, STP, VLANs, BGP, OSPF, VRF, routing protocols

• **Firewall & Security:**Cisco  ASA / FTD / FMC, DMZ, Context design, segmentation

• **Zero Trust:**ZPA / ZIA / Cisco ZTA, MFA, privileged access

• **Cloud AWS (Mandatory):**VPC, EC2, Transit Gateway, Direct Connect, virtual firewall

• Enterprise proxy solutions : Hands-on experience with (SOCKS5, Squid, HAProxy, NGINX, Zscaler, Blue Coat, or F5) for secure traffic forwarding and access control

• **Standards (Awareness):**IEC 62443, NIST CSF, ISO 27001, Purdue Model

• **Certifications (Preferred):**CCNP / CCIE, AWS Advanced Networking, CISSP

MUST-HAVE REQUIREMENTS

• **Layer 2 / Layer 3 Networking —**VLANs, STP, BGP, OSPF, VRF — must have designed in real environments, hands-on configuration experience on Cisco devices (Switches/Routers/Firewalls)
• **Firewall Architecture —**Hands-on Cisco ASA / FTD / FMC, DMZ, Context and segmentation design
• **Zero Trust —**Replaced VPN with ZTA, experience with Zscaler or Cisco ZTA
• **AWS Cloud Networking —**VPC, EC2, Transit Gateway, Direct Connect, Security Groups, virtual firewall on EC2 — mandatory, not optional
• **Standards Awareness —**Knows IEC 62443, NIST CSF, ISO 27001, Purdue Model at a conceptual level — does not need deep implementation experience

CLOUD NETWORKING DETAIL

Candidate must have hands-on AWS experience. Azure or GCP knowledge is a bonus but AWS is required.

• **VPC & Subnets —**Design public/private subnets, route tables, internet gateway, NAT gateway
• **EC2 —**Launch and configure instances, assign ENIs, Elastic IPs, IAM roles, Auto Scaling
• **Virtual Firewall on EC2 —**Deploy Cisco FTDv, Palo Alto VM-Series, or FortiGate as EC2 instances
• **Virtual Router on EC2 —**Deploy software routers (Cisco CSR 1000V / VyOS), BGP peering in AWS
• **Connectivity —**Direct Connect, Site-to-Site VPN, Transit Gateway for hybrid and multi-site
• **Security —**Security Groups, NACLs, AWS Network Firewall, VPC Flow Logs, CloudTrail

STANDARDS — AWARENESS LEVEL IS ENOUGH

Candidate should be able to discuss these standards in an interview — not implement them from scratch.

**IEC 62443:**Industrial cybersecurity standard — security zones, conduits, and security levels

**NIST CSF:**Identify, Protect, Detect, Respond, Recover — risk-based security framework

**ISO / IEC 27001:**Information security management system (ISMS) — how security is governed

**Purdue Model:**Layered industrial network model — why OT/IT segmentation is designed in levels

**NERC CIP:**Power grid cybersecurity compliance — awareness is fine for energy sector projects

EXPERIENCE EXPECTATIONS - Mandatory

• **Experience —**10 to 12 years in network engineering
• Ownership —
• Architect secure OT/IT integration models aligned to IEC 62443
• Represent OT network architecture in customer, regulator, and executive discussions
• Drive architecture for multi-site, multi-region deployments

Has owned design and implementation decisions — not just followed instructions

• **Leadership —**Can review team designs, mentor engineers, and drive technical direction along with hands-on demonstration of core skills mentioned above
• **Communication —**Comfortable speaking to executives, customers, and compliance teams
• Certifications: CCNP

 ]•      Certifications (Good-to-have) — CCIE, AWS Certified Advanced Networking, AWS Solutions Architect, CISSP

GOOD TO HAVE — NOT MANDATORY

• **Any OT / SCADA exposure —**even at project or client level
• **Azure or GCP networking —**as an addition to AWS
• **Infrastructure as Code —**Terraform, CloudFormation, or Ansible for network automation

QUALIFICATIONS

BTech / BCA / MCA

Preferred candidate profile

Perks and benefits