Senior Network Security Engineer – Fortinet

About Interspence Solutions Established in August 2017, Interspence Solutions LLP is a dynamic IT consulting and support services organization focused on delivering high-value technology solutions across manufacturing and process industries. We are committed to fostering innovation, excellence, and continuous growth by building teams that drive business transformation through technology.

Job Title: Senior Network Security Engineer – Fortinet (NSE 7. Experience: 6 - 10 Years Employment Type: Full-Time Work Mode: Work from Home Position Summary We are seeking an experienced and highly skilled Senior Network Security Engineer with strong expertise in Fortinet Security Solutions to join our growing Cyber Security team. The ideal candidate will be responsible for designing, implementing, managing, and supporting enterprise-grade network security infrastructure with a primary focus on FortiGate Firewalls, SD-WAN, VPN Technologies, and Security Operations . The role requires excellent troubleshooting capabilities, hands-on experience with Fortinet Security Fabric components, and the ability to support large-scale enterprise environments.

Key Responsibilities

Fortinet Security Administration Deploy, configure, and manage FortiGate Firewalls across enterprise environments. Administer and maintain FortiManager and FortiAnalyzer platforms. Configure and manage Security Policies, NAT, IPS, Application Control, Web Filtering, and Threat Protection services. Perform firewall upgrades, migrations, firmware updates, and vulnerability remediation activities.

Configure and support High Availability (HA) and clustering solutions. Troubleshoot complex network and security issues and perform detailed Root Cause Analysis (RCA). SD-WAN & VPN Management Design, implement, and manage Fortinet SD-WAN solutions. Configure and troubleshoot IPsec VPN, SSL VPN, and ADVPN deployments. Optimize WAN connectivity, application performance, and traffic steering policies.

Implement secure remote access solutions and Zero Trust Network Access (ZTNA) frameworks. Network Security Operations Monitor security events, alerts, and network performance metrics. Perform incident response, threat investigation, and security troubleshooting activities. Ensure compliance with security best practices, policies, and organizational standards.

Collaborate with Infrastructure, Cloud, and Application teams to maintain a secure and resilient environment. Routing & Switching Configure and troubleshoot dynamic routing protocols such as BGP and OSPF. Support enterprise LAN/WAN environments and network segmentation initiatives. Maintain and update technical documentation including HLDs, LLDs, SOPs, and operational procedures.

Documentation & Governance Prepare implementation plans, technical documentation, and operational runbooks. Maintain asset inventory, configuration records, and change management documentation. Support internal and external audits and compliance initiatives.

Required Skills

& Experience 6–10 years of experience in Network Security Engineering. Strong hands-on experience with FortiGate Firewalls. Expertise in FortiManager and FortiAnalyzer administration. Hands-on experience with Fortinet SD-WAN deployments and troubleshooting. Strong understanding of VPN technologies including IPsec VPN, SSL VPN, and ADVPN.

Experience with High Availability (HA) and clustering solutions. Knowledge of routing protocols including BGP and OSPF. Excellent troubleshooting, analytical, and problem-solving abilities. Strong verbal and written communication skills. Preferred Technical Skills Experience with FortiAuthenticator, FortiSwitch, and Fortinet Security Fabric solutions.

Exposure to Palo Alto, Check Point, Cisco ASA/FTD, or other enterprise security platforms. Knowledge of AWS, Azure, or other cloud security technologies. Familiarity with Zero Trust Network Access (ZTNA), SASE, and cloud security architectures. Experience supporting enterprise-scale security environments. Mandatory Certification Fortinet NSE 7 / FCSS – Network Security Preferred Certifications Fortinet NSE 5 (FortiManager / FortiAnalyzer) NSE 4 – FortiGate Administrator CCNP Security / CCNA Security PCNSE (Palo Alto Networks) Check Point Security Certifications (CCSA / CCSE).