Network Security Engineer

Interspence Solutions Llp; United States; Remote; USD 125,000 - 165,000; Full time

Job summary

Interspence Solutions LLP in the United States seeks a Senior Network Security Engineer with Fortinet expertise to design, implement, and support enterprise-grade security infrastructure, focusing on FortiGate Firewalls, SD-WAN, VPN, and Security Operations.

The ideal candidate will manage Fortinet Security Fabric components, perform RCA, and support large-scale environments with strong troubleshooting, collaboration with Infra/Cloud teams, and adherence to security policies.

Qualifications

• 6–10 years of network security engineering experience.
• Hands-on with FortiGate firewalls.
• FortiManager and FortiAnalyzer administration.
• Experience with Fortinet SD-WAN deployments.
• Strong VPN expertise: IPsec, SSL, ADVPN.
• HA and clustering experience.

Responsibilities

• 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 RCA.

Tools

FortiGate Firewalls

FortiManager

FortiAnalyzer

Fortinet SD-WAN

IPsec VPN

SSL VPN

ADVPN

High Availability (HA)

Clustering

BGP

OSPF

Job description

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 (NSE5, NSE6 OR 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

• 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.

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).