Hire the Best Firewall Developers
in the United States

Clients rate our Firewall developers
Rating is 4.7 out of 5.
4.7/5
Based on 182 client reviews
Kevin B.

Chicago, Illinois

$150/hr
5.0
115 jobs

✨🥇🏆 - I help businesses design, deploy, secure, and optimize IT infrastructure. With experience across networking, virtualization, cloud platforms, Microsoft technologies, and cybersecurity, I can step into existing environments, solve complex technical challenges, or build new infrastructure from the ground up. 🏆🥇✨ - My background includes working with enterprise and SMB environments, delivering everything from infrastructure migrations and platform upgrades to security improvements and performance optimization. I focus on implementing solutions that are secure, scalable, and aligned with project goals. 👉 My expertise includes: ✅ - Networking: Cisco, Meraki, UniFi, VLANs, VPNs, routing, switching, wireless deployments, and network troubleshooting. ✅ - Cybersecurity: SonicWall, Palo Alto, Fortinet, Cisco, firewall configuration, VPNs, access control, network hardening, and security best practices. ✅ - Virtualization: VMware vSphere, Citrix Virtual Apps & Desktops, Citrix MCS, PVS, App Layering, XenServer, Microsoft Hyper-V, VDI deployments, and server migrations. ✅ - Microsoft Technologies: Windows Server, Active Directory, Group Policy, DFSR, WSUS, Microsoft Exchange, Microsoft 365, Microsoft Entra ID (Azure AD), and PowerShell automation. ✅ - Storage & Infrastructure: Dell EMC, Pure Storage, SAN deployment, disaster recovery planning, and infrastructure modernization. ✅ - Systems Engineering: Server deployment, cloud migrations, performance tuning, infrastructure upgrades, automation, and complex troubleshooting. 🥇 - I believe technology should solve problems, not create them. My approach is straightforward: understand the objectives, identify the right solution, and deliver high-quality work with clear communication throughout the project. Whether it's a migration, virtualization deployment, network redesign, cloud implementation, security hardening, or resolving a complex infrastructure issue, I focus on delivering results that meet the agreed scope and timeline. 🥇 - If you need an experienced infrastructure engineer for a well-defined project, I'd be happy to discuss your requirements.

  • Firewall
  • Network Administration
  • Network Security
  • Microsoft Active Directory
  • Citrix
  • Cisco Meraki
  • VMWare
  • Server Virtualization
  • Storage Area Network
  • Ubiquiti
  • Hosting Setup
  • Cloud Migration
  • Email Security
  • Office 365
  • Fortinet
  • GoDaddy
  • Microsoft Hyper-V Server
  • Palo Alto Firewalls
  • WiFi
  • Microsoft Azure
Yun P.

Littleton, Colorado

$55/hr
4.6
8 jobs

I am a CCIE-certified Network Engineer with over 14 years of experience designing, upgrading, and supporting on premise and hybrid enterprise network infrastructure across healthcare, financial services, professional services, public sector, and managed services environments. My background is rooted in deep hands-on expertise across routing and switching, data center networking, WAN architecture, and advanced troubleshooting in complex, multi-vendor environments. I have worked extensively with platforms including Cisco, Palo Alto, Infoblox, Arista, and Juniper. Throughout my career, I have led large-scale remote and hybrid deployments, stabilized critical network environments, and improved uptime, performance, and scalability across both data centers and distributed enterprise systems. I bring a strong ability to partner cross-functionally with infrastructure, security, and operations teams to deliver resilient, high-performing network solutions. CORE COMPETENCIES: ★ Data Center Architecture ★ Routing & Switching ★ SD-WAN ★ Network Security ★ WAN Architecture ★ Infrastructure Modernization ★ Advanced Troubleshooting ★ Cisco Nexus & Catalyst ★ Palo Alto / Fortinet Firewalls ★ Infoblox ★ BGP / OSPF / EIGRP ★ MPLS / DIA ★ Network Automation (Ansible) ★ High Availability & Resiliency ★ Leaf & Spine / Core & Distribution & Access TOOLS: Cisco IOS | Cisco NX-OS | Cisco Nexus (9000/7000/5000/2000) | Cisco Catalyst | Cisco ACI | Arista EOS | Juniper MX/EX | ArubaOS | Nokia OS | Cisco Meraki | BGP | OSPF | EIGRP | vPC | STP | VDC | VXLAN | EVPN | NAT | QoS | Multicast | VRF | DMVPN | IPsec | HSRP | VRRP | GLBP | LACP | LLDP | CDP | Cisco Catalyst SD-WAN | Viptela SD-WAN | SilverPeak SD-WAN | MPLS | DIA | Metro Ethernet | Palo Alto | Fortinet | Cisco ASA | Cisco ISE | Cisco DNA | Wireshark | Ansible | TCL Shell | Python | SecureCRT | PuTTY | ServiceNow | Microsoft Teams | Zoom | Webex | Outlook | Visio CERTIFICATIONS: CCIE Routing & Switching #51201 | CCNP | CCDA | MCSE

  • Network Administration
  • Network Engineering
  • Network Equipment
  • Network Security
  • Network Design
  • Network Architecture
  • Network Planning
  • Network Monitoring
  • Network Traffic Analysis
  • Wide Area Network
  • Local Area Network
  • Wireless Network Implementation
  • Cisco Certified Internetwork Expert
  • Cisco ACI
  • Cisco Meraki
  • Cisco WLC
  • Cisco ISE
  • Palo Alto Firewalls
  • Cisco Certified Network Professional
  • Cisco Router
Chris C.

Portage, Michigan

$130/hr
5.0
74 jobs

👑 Expert Vetted - Top 1% of talent on Upwork ⭐️ Top Rated - Highly rated for the work provided 🎯 100% Job Success Score 🕒 600+ hours on Upwork ✅ 30+ years of experience ✅ 50+ projects delivered here on Upwork With over three decades of experience under my belt as a network and security engineer, I've traversed the ever-evolving landscape of LAN/WAN network design, network security, firewalls, implementation, and maintenance. My expertise is not merely a testament to time, but also backed by credentials including Cisco CCNP (route/switch), a Cisco CCDP for network design, and a PCNSE for Palo Alto Networks. I am always available for consulting for short-term and long-term projects. Thank you.

  • Firewall
  • Computer Network
  • Network Engineering
  • VPN
  • Cisco ASA
  • VMWare
  • Security Engineering
  • Palo Alto Firewalls
  • Cisco Certified Network Professional
  • Ubiquiti
  • Wireless Communication
  • VoIP
  • Virtual LAN
  • Network Design
  • Cisco Router
  • Cisco Certified Network Associate
Anthony H.

Dodgeville, Wisconsin

$150/hr
5.0
74 jobs

I’m a senior network and security engineer with 8+ years of hands-on Fortinet experience, specializing in FortiGate, FortiManager, large-scale deployments, and network migrations. I don’t just configure firewalls, I design, automate, deploy, and stabilize entire environments. My work typically involves complex Fortinet ecosystems with hundreds (or thousands) of devices, where reliability, repeatability, and clean architecture are critical. I’ve deployed and managed 1,000+ FortiGate / FortiWiFi devices across multi-site environments, built FortiManager policy packages and provisioning templates, implemented zero-touch and low-touch deployments, and automated Fortinet workflows using Python, FortiManager APIs, FortiOS APIs, and SSH. Clients bring me in when: Fortinet environments are messy or unstable Migrations need to be done correctly (not just copied configs) Scale breaks manual processes They want answers, root cause analysis, and fixes, not guesswork I debug first, fix the issue, and then explain exactly why it happened and how to prevent it going forward. Core Specialties Fortinet / Network Security FortiGate & FortiWiFi (40F → 900G, physical & VM) FortiManager & FortiAnalyzer SD-WAN (ADVPN, hub-and-spoke, BGP) IPSec VPN (IKEv1 / IKEv2, cert-based, SAML) ZTNA with FortiEMS, EMS tags & serial verification Central NAT, VIPs, IP pools DNS Database & AD-integrated DNS UTM: IPS, AV, Web Filtering, App Control FortiSwitch & FortiAP via FortiLink Network Migrations Cisco ASA to Fortinet Palo Alto to Fortinet SonicWall to Fortinet Meraki / Aruba / Cisco switching integrations Policy cleanup, object normalization, and architecture redesign Automation, Scripting & DevOps Python (FortiManager API, FortiOS API, SSH automation) Bash & Linux administration Automation for: Bulk device inventory & reporting Metadata variable population in FortiManager Standardized configuration enforcement Fleet-wide data extraction to CSV Ubuntu Azure networking Monitoring & visibility: Zabbix ntopng NetFlow Example work: Built Python automation to pull device data for 1,140+ FortiWiFi devices from FortiManager, export to CSV, and dynamically populate FortiManager metadata variables Automated SSH-based configuration deployment across large FortiGate fleets not fully managed by FortiManager Aggregated discovered device data from all FortiGates into centralized reporting for fleet-wide visibility My preferred approach: Debug first, explain later Clear root cause analysis (RCA) Clean, supportable designs Minimal vendor hand-holding required Comfortable working independently or alongside internal teams

  • Firewall
  • Network Equipment
  • VPN
  • Internet Protocol Security
  • Network Monitoring
  • C#
  • Linux
  • Fortinet
  • Zabbix
  • OSPF
Timothy I.

Maple Grove, Minnesota

$110/hr
5.0
76 jobs

Experienced network engineer that has embraced the cloud and helped organizations large and small. I have done everything from establish VPNs to design global hybrid networks that utilize SD-WAN and direct connect. I have also designed multi-account AWS environments with least privilege cross account access via IAM users and SAML identity providers. I hold over 10 AWS certifications including Solutions Architect Professional, Advanced Networking Specialty, and Security Specialty. I am passionate about learning new things, expanding my existing knowledge, and sharing my knowledge to help others effectively utilize technology.

  • Firewall
  • Network Engineering
  • VPN
  • Virtualization
  • Ubiquiti
  • Cisco Meraki
  • Python
  • Amazon Web Services
  • Bash Programming
  • Oracle Cloud
  • Amazon GuardDuty
  • OpenVPN
  • Linux System Administration
  • Cloudflare
  • Cisco Router
Robert T.

Marana, Arizona

$80/hr
5.0
8 jobs

I have years of experience designing, deploying, and managing networks for small and medium businesses. I can provide one-time or ongoing services for your business. I have extensive experience with Ubiquiti (Unifi & UISP), Cisco/Meraki, Watchguard, and Sonicwall technologies. I work well independently, or can also work collaboratively with internal IT teams, contractors or service providers.

  • Firewall
  • Computer Network
  • Network Administration
  • Network Engineering
  • Network Design
  • Cisco Meraki
  • Cisco
  • Extreme Networks
  • UniFi
  • Troubleshooting
  • Diagram
  • Structured Cabling
  • Ubiquiti
  • SonicWall
  • Network Monitoring

How it works

Post a job for freePost a job

Tell us what you need. Create your own job post or generate one with AI then filter talent matches.

Hire top talent fast

Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.

Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

Payment simplified

Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.

Don't just take our word for it

How do I hire a Firewall Developer in the United States on Upwork?

You can hire a Firewall Developer in the United States on Upwork in four simple steps:

  • Create a job post tailored to your Firewall Developer project scope. We'll walk you through the process step by step.
  • Browse top Firewall Developer talent on Upwork and invite them to your project.
  • Once the proposals start flowing in, create a shortlist of top Firewall Developer profiles and interview.
  • Hire the right Firewall Developer for your project from Upwork, the world's largest work marketplace.

At Upwork, we believe talent staffing should be easy.

How much does it cost to hire a Firewall Developer?

Rates charged by Firewall Developers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.

Why hire a Firewall Developer in the United States on Upwork?

As the world's work marketplace, we connect highly-skilled freelance Firewall Developers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream Firewall Developer team you need to succeed.

Can I hire a Firewall Developer in the United States within 24 hours on Upwork?

Depending on availability and the quality of your job post, it's entirely possible to sign up for Upwork and receive Firewall Developer proposals within 24 hours of posting a job description.