Client Facing Fortinet Network Engineer

SQUARE10 SOLUTIONS LLC•Philadelphia, PA

10d•Hybrid

About The Position

We are not looking for someone who just knows Fortinet. We are looking for someone who enjoys solving real problems, communicating clearly under pressure, and being a trusted partner to clients. At Square10, network engineers do more than implement and support. They help IT leaders make confident decisions. If you value variety, clean execution, and plain-English communication, this role is for you. Why Square10 We help IT leaders cut through complexity and make confident decisions. Our clients—leading law firms and professional services organizations—stick with us because we deliver real business results and we’re great to work with. If you’re the person teams call in a crunch and you explain the hard stuff in plain English, you’ll fit right in. The Role This is a hands-on, client-facing network engineering role focused on Fortinet-centric environments. You will support our clients, lead troubleshooting efforts, and design and implement secure, scalable network solutions across multiple client environments. Some days you will be deep in FortiGate flow debugging. Other days you will be leading a migration, coordinating with a carrier, or walking a client through next steps. Variety is the norm. Clear thinking and steady execution are expected.

Requirements

Five (5) or more years designing, implementing, and supporting enterprise network environments
Strong hands-on experience with Fortinet technologies including FortiGate, FortiSwitch, and FortiAP
Solid understanding of core networking and security principles including TCP/IP, routing, and switching
Proven experience with FortiGate SD-WAN, VPN technologies, and high availability firewall environments
Hands-on use of FortiManager and FortiAnalyzer in production environments
Experience troubleshooting complex network issues efficiently and calmly
Ability to design and support secure, scalable network architectures aligned to client needs
A consulting mindset with the ability to own outcomes, manage priorities, and adapt across client environments
Strong judgment in production environments with appropriate risk awareness and escalation
Clear communicator who can explain technical decisions to both technical and non-technical audiences
Disciplined executor who plans carefully, validates changes, and documents thoroughly
Self-directed, organized, and accountable for results
Enjoys client interaction and on-site work
Continuous learner with interest in evolving network and security technologies
Fortinet NSE 4 required or obtained within an agreed timeframe
Willingness to maintain required certifications for Square10 and client engagements

Nice To Haves

Fortinet NSE 7 preferred
Azure infrastructure experience, including FortiGate connectivity patterns
Automation exposure such as FortiOS API or Ansible
NAC or 802.1X experience
Network monitoring and management tools
Strong presentation and client-facing communication skills

Responsibilities

Triage, troubleshoot, and resolve network incidents across FortiGate, FortiSwitch, FortiAP, and WAN circuits from Level 1 through Level 3
Perform structured root-cause analysis and deliver durable fixes rather than temporary workarounds
Use advanced troubleshooting tools and techniques including: FortiGate flow debugging, packet capture, session and routing analysis, and log interpretation Wireshark and packet analysis to isolate Layer 3 through Layer 7 issues
Coordinate with ISPs, carriers, and vendors and own support cases through resolution
Communicate clearly with clients during incidents, including impact, status, and next steps
Design, implement, and optimize Fortinet-based network and security solutions
Lead or co-lead project delivery, including: Discovery and requirements gathering Solution recommendations aligned to client risk and business needs Implementation plans with validation and rollback steps As-built documentation and operational handoff
FortiManager Maintain disciplined policy, object, and template workflows Enforce standards while accommodating client-specific requirements Ensure version control, audit readiness, and consistent change management
FortiAnalyzer Ensure comprehensive logging, visibility, and retention Deliver reporting and operational insight that drives action
FortiClient EMS Design and maintain endpoint, VPN, ZTNA, and posture configurations Ensure reliable deployment, upgrades, and version control
Define and maintain firmware standards for FortiGate, FortiSwitch, and FortiAP
Plan and execute upgrades using documented runbooks and validation steps
Design and troubleshoot campus LAN environments including: VLANs, trunks, STP or RSTP, LACP, LLDP, and PoE
Support HA firewall environments, SSL inspection, and routing
Static routing required; BGP experience preferred
Own diagrams, IP plans, as-built documentation, and operational notes
Contribute to reusable standards, templates, and runbooks across clients