> Markdown version of [/jobs/ext/1914710-firewall-engineer](https://www.wearedevelopers.com/jobs/ext/1914710-firewall-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Firewall Engineer - **Company:** DFND Security, Inc. - **Location:** Chenango Forks, NY, United States (Remote available) - **Contract:** Permanent contract - **Skills:** Cisco PIX, Internet Protocol Security (IP SEC), Subnetting, Virtual Private Networks (VPN), Network Layer, Network Diagrams, Routing, Remote Access Technology, Virtual Local Area Networks, Computer Network Operations, Palo Alto Networks, Fortinet, Firewall Services Module - **Published:** August 4, 2026 - **Apply:** https://www.dice.com/job-detail/9c92e40e-3623-49a5-af3b-0f491e7b28aa ## About the Role * Proven experience with Fortinet FortiGate firewall deployment and configuration * Strong hands-on experience with Cisco ASA and/or Palo Alto Networks firewalls * Solid understanding of: * Layer 3 networking (routing, VLANs, subnetting) * VPN technologies (IPSec, site-to-site tunnels) * NAT and firewall policy design Experience performing firewall migrations and cutovers in production environments Ability to work independently in remote and field environments Strong troubleshooting and documentation skills, * Experience working in utilities, energy, or critical infrastructure environments * Familiarity with substation networks and OT/ICS environments * Knowledge of security and compliance frameworks relevant to utilities (e.g., NERC CIP) * Experience with FortiManager and FortiAnalyzer * Relevant certifications (e.g., NSE 4/5/7, CCNP Security, PCNSE) ## Description The engineer will replace existing Cisco ASA and Palo Alto Networks firewalls with Fortinet FortiGate appliances, ensuring secure, reliable, and compliant network operations within critical infrastructure environments., On-Site (1 Day per Location): * Travel to designated utility substation sites to perform firewall hardware replacements * Decommission existing Cisco ASA and Palo Alto firewalls * Rack, install, and physically connect Fortinet FortiGate appliances * Perform initial configuration, including: * Interface setup * Routing (static and/or dynamic) * VPN configuration (IPSec) * Basic security policies Coordinate with remote teams for cutover and validation Perform initial connectivity and failover testing Remote (Off-Site Work): * Complete advanced firewall configuration and rule migration * Optimize security policies and NAT configurations * Integrate with centralized management tools (e.g., FortiManager, FortiAnalyzer if applicable) * Perform post-deployment validation and troubleshooting * Document configurations, network diagrams, and change records * Support knowledge transfer and handoff to operations teams ## Related Videos - [WeAreDevelopers LIVE - Back to CODE100](https://www.wearedevelopers.com/videos/1909-wearedevelopers-live-back-to-code100) - [Creating a routing app with Google Maps API from scratch](https://www.wearedevelopers.com/videos/831-creating-a-routing-app-with-google-maps-api-from-scratch) - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [A Technical Introduction to Bitcoin's 2nd Layer- The Lightning Network](https://www.wearedevelopers.com/videos/15-a-technical-introduction-to-bitcoin-s-2nd-layer-the-lightning-network) - [How Cisco embraced a DevOps culture within its network engineering team](https://www.wearedevelopers.com/videos/99-how-cisco-embraced-a-devops-culture-within-its-network-engineering-team) - [Reducing LLM Calls with Vector Search Patterns - Raphael De Lio (Redis)](https://www.wearedevelopers.com/videos/1714-reducing-llm-calls-with-vector-search-patterns-raphael-de-lio-redis) ## Related Articles - [How Much FAANG Companies Actually Pay Software Engineers in 2025](https://www.wearedevelopers.com/magazine/230-how-much-faang-companies-actually-pay-software-engineers-in-2025) - [9 Ways to Make Money Hacking](https://www.wearedevelopers.com/magazine/333-9-ways-to-make-money-hacking) - [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Basic And Advanced Networking in Dart and Flutter](https://www.wearedevelopers.com/magazine/112-basic-and-advanced-networking-in-dart-and-flutter)