Senior Network Security Consultant

Job Posting: Senior Network Security Consultant (Contract) Duration: Estimated 6–10 Weeks (Project-Based) Location: Remote Reports To: Project Manager Overview We are seeking an experienced Senior Network Security Consultant to assist with a network assessment, redesign, and security enhancement project for a client operating a Fortinet-based infrastructure. The consultant will be responsible for evaluating the current environment, developing network and security architecture recommendations, implementing approved changes, and producing professional technical documentation. This engagement requires a hands-on engineer who can work independently, communicate effectively with both technical and non-technical stakeholders, and deliver high-quality documentation and implementation services.

Project Scope The consultant will perform the following activities: Network Assessment & Discovery Review and assess existing Fortinet infrastructure, including: FortiGate Firewalls FortiSwitches FortiAP Wireless Access Points Analyze network topology, VLAN structure, routing, VPNs, and security policies. Identify configuration issues, security risks, and performance concerns. Documentation & Diagramming Develop current-state network documentation, including: Physical network diagrams Logical network diagrams Security zone diagrams Network inventory documentation Document traffic flows and application dependencies.

Security Review Conduct a firewall and network security assessment using: CIS Controls Fortinet best practices Industry-standard network security principles Review: Administrative access controls VPN security Network segmentation Firewall rule design Logging and monitoring Security profiles and threat protection features Future-State Design Design a secure and scalable network architecture. Create: Security zone architecture VLAN segmentation strategy Traffic flow matrix Future-state logical network diagrams Develop implementation recommendations and remediation plans. Implementation & Validation Implement approved network and security changes.

Validate connectivity, segmentation, VPN functionality, and security controls. Assist with troubleshooting and post-implementation support. Required Qualifications Minimum 5 years of enterprise networking experience.

Minimum 3 years of hands-on Fortinet experience. Strong expertise with: FortiGate Firewalls FortiSwitch FortiAP FortiOS Experience designing and implementing: VLANs Security zones Site-to-site VPNs Remote access VPNs Firewall policies Network segmentation Experience creating professional network diagrams and technical documentation. Strong troubleshooting and analytical skills.

Excellent written and verbal communication skills. Preferred Qualifications Experience with Azure networking and hybrid cloud environments. Experience with FortiAnalyzer and FortiManager.

Previous consulting or MSP experience. Preferred Certifications Fortinet FCSS or NSE 7+ CCNP Enterprise CISSP Equivalent advanced networking or security certifications Deliverables The consultant will be expected to deliver: Current-state network diagrams Security assessment report Data flow analysis Future-state logical network design Security zone and traffic flow documentation Implementation documentation Testing and validation reports Knowledge transfer documentation How to Apply Qualified candidates should submit: Resume Summary of Fortinet experience Relevant certifications Sample network diagrams or architecture documentation (if available) Hourly rate and availability Only candidates with demonstrated Fortinet architecture and network security experience will be considered.