Benefits:
401(k)
401(k) matching
Bonus based on performance
Competitive salary
Dental insurance
Health insurance
Paid time off
Vision insurance
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.
What You’ll Do
Operational Support and Troubleshooting
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, Projects, and Improvements
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
Common project work includes:
FortiGate deployments, migrations, and FortiOS upgrades
SD-WAN design and rollout including SLA health checks, traffic steering, and failover behavior
VPN design and troubleshooting including site-to-site IPsec and client VPNs
Network segmentation and security posture improvements
Enterprise wireless design and optimization with FortiAP
Platform Ownership Across Clients
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
Lifecycle, Switching, and Resiliency
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
Documentation and Quality
Own diagrams, IP plans, as-built documentation, and operational notes
Contribute to reusable standards, templates, and runbooks across clients
What You’ll Bring
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
Certifications
Fortinet NSE 4 required or obtained within an agreed timeframe
Fortinet NSE 7 preferred
Willingness to maintain required certifications for Square10 and client engagements
Nice-to-Haves
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
How We Work
We listen first, solve fast, and keep communication open and honest. You will collaborate with people who are confident without being cocky and flexible without losing clarity.
Location & Benefits
This role is open only to candidates located in the New York City or Philadelphia metro areas. Work is hybrid by design, with remote flexibility balanced by regular client site visits within these regions. Approximately 25 to 40 percent on-site presence is expected, with occasional travel outside the immediate area as needed.
This is a full-time, salaried position with bonus potential. Square10 offers a comprehensive benefits package including a 401(k) plan and company-sponsored training and certifications. We also actively encourage you to use your paid time off.
Ready to Apply?
Send your resume to recruiting@square10.net. If your experience doesn’t line up 1:1 but you’re clearly strong on modern management and love solving for people, we’re all ears.
EOE: Square10 considers all qualified applicants without regard to race, color, religion, gender, sexual orientation, gender identity, national origin, disability, veteran status, or any other protected characteristic under applicable law.
Flexible work from home options available.