Delivery Manager Enterprise Network

Job Purpose

1. JOB PURPOSE We are seeking a skilled Network Security Manager (GB05) with strong hands-on expertise in Oracle Cloud Infrastructure (OCI) networking and security, including Palo Alto SASE, OCI-native security controls (NSGs, Security Lists), and automation-driven rule governance. The role is responsible for end-to-end network security operations, policy automation, and compliance within OCI environments, ensuring secure, scalable, and audit-ready cloud infrastructure. The candidate will also play a key role in managing security audits, compliance requirements, and ongoing security posture enhancements.

Duties and Responsibilities

PRINCIPAL ACCOUNTABILITIES

A. Minimum Required Accountabilities for this Role (Mandatory)

OCI Network Security Operations

• Manage and operate OCI networking components:
  oVCNs, Subnets, Route Tables
  oNSGs (Network Security Groups), Security Lists
  oInternet Gateway, NAT Gateway, Service Gateway
  oDRG (Dynamic Routing Gateway), Local Remote Peering
• Ensure secure and optimized traffic flow between OCI workloads, on prem systems, and external networks.
• Firewall SASE Security Management
• Manage and operate Palo Alto (VM-Series / SASE) within OCI and hybrid environments.
• Configure and maintain:
  oSecurity policies and rule bases
  oNAT (SNAT/DNAT)
  oVPNs (IPSec/SSL)
  oThreat prevention profiles (IPS, Anti-malware, URL filtering)
• Ensure consistent enforcement of security policies across OCI workloads.
• Security Policy Governance Automation
• Implement and manage firewall rule lifecycle processes:
  oRule creation, review, optimization, and decommissioning
• Drive automation of rule reviews, recertification, and policy validation using scripts/API-based solutions.
• Maintain standardization across NSGs, Security Lists, and firewall rules.
• Ingress/Egress Traffic Security
• Define and enforce secure ingress and egress controls for OCI applications.
• Implement segmentation strategies for east-west and north-south traffic flows.
• Ensure secure exposure of applications via load balancers, gateways, and SASE.
• Monitoring Incident Management
• Monitor firewall logs, OCI flow logs, and threat alerts.
• Handle 247 incident response, troubleshooting, and escalation.
• Perform root cause analysis (RCA) and implement proactive security improvements.
• Audit Compliance Management
• Manage network security audits (internal/external/regulatory) specific to OCI environments.
• Ensure compliance with organization policies and regulatory frameworks.
• Conduct:
  oFirewall rule reviews and recertification
  oNSG/security configuration audits
  oAccess and segmentation validation
• Track and close audit observations with proper documentation.
• Documentation Collaboration
• Maintain updated HLD, LLD, SOPs, runbooks, and security policies.
• Collaborate with cloud, DevOps, security, and application teams.

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B. Additional Accountabilities (Advanced / Growth-Oriented)

Security Architecture Optimization

• Design and optimize secure OCI network architectures with segmentation and zero-trust principles.
• Define best practices for VCN design, peering, DRG-based architectures, and load balancing.

Automation DevSecOps

• Implement Infrastructure as Code (IaC) using Terraform/OCI Resource Manager.
• Automate firewall rules, NSG updates, compliance checks, and configuration drift detection.
• Integrate network security into CI/CD pipelines.

Security Posture Enhancement

• Strengthen environment security using:
  oThreat intelligence
  oDDoS protection strategies|oContinuous monitoring and anomaly detection
• Integrate with SIEM/SOC tools for centralized visibility.

Leadership Governance

• Act as technical escalation point for OCI security issues.
• Guide team members and vendors on best practices.
• Define governance models for OCI network security operations.

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Key Decisions / Dimensions

5. DECISIONS

• Approve firewall rule changes, NSG policies, and security configurations.
• Decide segmentation strategies and ingress/egress controls.
• Lead decisions during security incidents and audit escalations.
• Recommend improvements in security architecture and tooling.

DIMENSIONS

Financial Dimensions

• Management of OCI networking/security costs and Palo Alto licensing

Other Dimensions

• Total Team Size: ___
• Direct Reports: ___
• Indirect Reports: ___
• OCI Environments/VCNs Managed: ___
• Applications Hosted on OCI: ___

Major Challenges

• Maintaining consistent security posture across dynamic OCI environments.
• Managing complex firewall and NSG rule sets without over-permissive access.
• Ensuring continuous compliance with audit and regulatory expectations.
• Handling high-volume security alerts and incident response.
• Balancing agility and speed of deployment with strict security controls.

Required Qualifications and Experience

SKILLS AND KNOWLEDGE

a) Educational Qualifications

• Bachelors / Masters in Computer Science, IT, or related field.

b) Work Experience Certifications

Must Have

• 58+ years in network security with cloud exposure, particularly OCI.
• Hands-on experience with:
  oOCI Networking (VCN, DRG, NSG, Peering)
  oPalo Alto Firewalls / SASE
• Strong knowledge of firewall policy management, NAT, VPNs, and segmentation.
• Experience in automating firewall rule review and compliance processes.
• Proven experience in handling security audits and compliance requirements.

Good to Have

• Certifications: OCI Architect/Professional, PCNSE, CCNP Security.
• Experience with Terraform, Python, Ansible for automation.
• Exposure to SIEM/SOC integrations and cloud security monitoring.

Soft Skills

• Strong ownership, audit handling capability, and stakeholder management.
• Excellent troubleshooting and analytical skills.
• Ability to work in a 247 operational environment.