32 firewalls jobs at 23 companies in San Antonio, TX
3mo
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Firewall/Network Security Administrator
San Antonio, Texas, United States
OnsiteFull Time
5+ YOE5+ years enterprise network security; DoD boundary protection; firewall/IDS/IPS; DCO; Top Secret/SCI clearance.
Firewalls, IDS/IPS, Load balancers, Web proxies
1w
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Third Shift Wide Area Network Engineer
San Antonio, Texas, United States
OnsiteFull Time
5+ YOERequires an active DoD Secret clearance, DoD 8570/8140 cybersecurity certification, 5+ years of network infrastructure experience, and expertise with routing, switching, firewalls, VPNs, and network protocols.
Routers, Switches, Firewalls, Virtual Private Network, TCP/IP, OSPF, BGP, Access Control Lists, Layer 2 Switching, Spanning Tree, Packet Analysis, Cisco Switches, Palo Alto Firewalls, F5 devices
2w
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Network Engineer 3 (TG)
Annapolis Junction or San Antonio or Aurora or Cary
$169k-$266k/yr OnsiteFull Time
10+ YOEActive TS/SCI with Polygraph required; 10+ years relevant experience (varies by degree); expertise in LAN/WAN design, VPN/IPSec, VoIP, GRE, firewalls, load‑balancing, network analyzers, and troubleshooting.
LAN, CAN, WAN, VPN, VoIP, GRE Tunneling, IPSec, NAT, Media over IP (MoIP), Traffic Shaping, load‑balancing, firewall, network analyzer, WAN test equipment, network simulator, ISO 9000
3w
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Network Engineer 2
San Antonio, Texas, United States
OnsiteFull Time
6+ YOE6+ years network engineering experience (master's+6 years or equivalent), IAT Level I, active security clearance with polygraph, experience with VPN, VoIP, firewalls, GRE, IPSec, NAT, load-balancing and network performance monitoring.
VPN, VoIP, firewall, GRE Tunneling, IP Security (IPSec), NAT, load-balancing, Traffic Shaping
2mo
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Systems Engineer / System Administrator for Managed Service Provider
San Antonio, Texas, United States
OnsiteFull Time
5+ YOEBS in CS/Engineering or 5+ yrs exp; extensive PC ops knowledge; experience with monitoring/automation; experience with firewall, cloud, networking, SQL, and Windows Server.
Sophos Firewall, Meraki Firewall, Office 365, Microsoft 365, Azure Virtual Desktop, RDS, SQL Server, Windows Server
1w
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Edge Connectivity Specialist 2
Omaha or Saint Louis Park or Denver or Englewood or Orlando or Kansas City or Albuquerque or Portland or Salem or Pittsburgh or Austin or Dallas or Fort Worth or San Antonio or Vienna or Olympia or Columbia or Saint Paul or Harrisburg or Pennington or Woodcliff Lake or Phoenix or Folsom
OnsiteFull Time
3+ YOEBachelor's degree or equivalent experience, 3+ years in network engineering or enterprise infrastructure support, and experience with LAN/WAN, wireless, routing, switching, VPNs, VLANs, and firewalls.
Azure, AWS, SD-WAN, VLANs, VPN, LAN/WAN, Fortinet, Palo Alto, Aruba
5d
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IT Security Analyst
Baton Rouge or Livingston or San Marcos or Duluth
OnsiteFull Time
5+ YOERequires 5+ years in information security, incident response, vulnerability assessment, firewalls, SIEM, Windows security, Microsoft 365/Azure, AI security, and cybersecurity frameworks.
Windows, Windows Server, SIEM, Arctic Wolf, Managed Detection and Response (MDR), Sophos, Microsoft 365, Microsoft Azure, Cisco Meraki, Fortinet FortiGate, VPN, Microsoft Copilot, Microsoft 365 Copilot, Azure AI, Microsoft Purview, Data Loss Prevention (DLP), NIST Cybersecurity Framework, CIS Controls, ISO 27001, NIST AI Risk Management Framework (AI RMF), ISO/IEC 42001
4h
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Network Technician (Remote)
Houston or Abilene or New Braunfels or Coppell or Austin or Fort Worth or New Braunfels or Albany
RemoteFull Time
Bachelor's degree or equivalent experience, 5+ years of enterprise networking experience, routing and switching expertise, firewall and Cisco Meraki experience, troubleshooting skills, and willingness to travel.
Microsoft Azure, ExpressRoute, VPN Gateway, Microsoft Teams Phone, Cisco Meraki, PowerShell, Python, SD-WAN, OT, CMMC, NIST 800-171, CIS Controls, OSPF, BGP, TCP/IP, VLANs, DNS, DHCP, IPAM, NAC, IDS/IPS, SIP, LAN, WAN, VPN
6d
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IT Specialist (Systems Administration/ Network Operations)
Kelly Air Force Base, Texas, United States
$33-$38/hr OnsiteFull Time
Experience configuring firewalls and network operating systems; supporting WAN, LAN, and storage networks; using SQL or DML; troubleshooting network performance; training technicians; and recommending hardware upgrades.
Cisco, Juniper, McAfee, Windows Server, VMware, Unix, z/OS, Structured Query Language (SQL), Data Manipulation Language (DML), WAN, LAN, Cat5, Cat6, virtualization, cloud computing
1w
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Edge Connectivity Specialist 2
Omaha or Phoenix or Saint Paul or Austin or Kansas City or Columbia or Denver or Vienna or Saint Louis Park or Folsom or Portland or Pennington or Woodcliff Lake or Orlando or Harrisburg or Salem or Fort Worth or Pittsburgh or San Antonio or Dallas or Albuquerque or Olympia or Englewood
OnsiteFull Time
3+ YOEBachelor’s degree or equivalent experience, 3+ years in network engineering or enterprise infrastructure support, and expertise in LAN/WAN, routing, switching, VLANs, VPNs, wireless, firewalls, and network troubleshooting.
LAN/WAN, VPN, SD-WAN, VLAN, Microsoft Azure, AWS, Fortinet, Palo Alto, Aruba, CCNA, CCNP
1w
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IT Specialist (Systems Administration/ Network Operations)
Kelly Air Force Base, Texas, United States
$33-$38/hr OnsiteFull Time
Experience administering firewalls, network operating systems, SAN/LAN/WAN networks, database query languages, network testing, customer support, technical communication, training, and troubleshooting. No education substitution.
Cisco, Juniper, McAfee, Windows Server, VMware, Unix, z/OS, Structured Query Language (SQL), Data Manipulation Language (DML), WAN, LAN, SAN, Cat5, Cat6, virtualization, cloud computing
1w
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Network Systems Engineer
San Antonio, Texas, United States
$78k-$176k/yr OnsiteFull Time
5+ YOERequires 5+ years in network security and IT or network design, 3+ years in firewall and enterprise security design, TS/SCI clearance, high school diploma or GED, and DoD 8140 Level II certification.
Palo Alto firewalls, Cisco, Juniper firewalls, Wireshark, SIEM, AWS, Azure, GCP, SD-WAN, Ansible, Python, STIGs, DoD Cloud SRG
2w
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Network Systems Engineer
San Antonio, Texas, United States
$78k-$176k/yr OnsiteFull Time
5+ YOERequires 5+ years in network security and IT or network design, 3+ years in firewall and enterprise security design, TS/SCI clearance, high school diploma/GED, and DoD 8140 baseline Level II certification.
Palo Alto firewalls, Cisco, Juniper firewalls, Wireshark, AWS, Microsoft Azure, GCP, SD-WAN, Ansible, Python, Security Information and Event Management (SIEM), Internet Protocol Security (IPsec), STIGs
1mo
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Cyber Data Engineer
San Antonio or Lackland Air Force Base
OnsiteFull Time
3+ YOEU.S. citizen with active TS/SCI; graduate degree in software engineering or BA/BS; 3+ years relevant experience; proficiency with Splunk/SPL, ELK/Lucene, Python, C/C++, PowerShell, RHEL/Unix, SIEMs, firewalls, and malware analysis.
Splunk Processing Language (SPL), ELK Lucene Query Syntax, Splunk, ELK, SIEM, RHEL, RHEL 7, Unix/Linux, Unix Scripting, Linux+/Red Hat, Microsoft Windows PowerShell, Python, C++, C/C++, regex, BASH, Java, Go, Alienvault, Logrhythm, Qradar, Fortinet, Sonicwall, Palo Alto, OSSEC, Snort, Suricata, MITRE ATT&CK
1mo
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Sr. Tactics Development (WEP/TAC) (ACD Operator/IR-/DCC)
San Antonio or San Antonio
OnsiteFull Time
Requires DoDD 8570/8140 AT Level III CND, active TS/SCI, proficiency with Python and PowerShell, experience with IDS/IPS, firewalls, log analysis, Wireshark and Snort, EnCase/FTK, MITRE ATT&CK knowledge, and experience developing TTPs and training materials.
Python, PowerShell, IDS/IPS, Wireshark, Snort, EnCase, EnCase Enterprise, FTK, MITRE ATT&CK, Active Directory, DNS, AFCERT
1w
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Analyst PG Op Technology Security 2
San Antonio, Texas, United States
OnsiteFull Time
Bachelor's degree in information systems, information technology, cybersecurity, computer science, MIS, engineering, or related field, or relevant ICS/OT and information security experience. Requires cybersecurity, networking, OT security, and virtual machine skills.
TCP/IP, Dynamic Host Configuration, Domain Name System (DNS), Microsoft Hyper-V, VMware vSphere, Wireshark, tcpdump, firewalls, intrusion prevention systems
1mo
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Building Automation Systems Application Engineer II
San Antonio or Austin or Houston
OnsiteFull Time
2+ YOE2+ years experience in building automation programming; ability to lead medium/large projects; proficiency with BACnet, Modbus, LON, IP networking and BAS device configuration; strong communication and troubleshooting skills.
Tridium Niagara, Schneider Electric Ecostruxure Building operation system, Siemens Building automation system, Johnson Controls systems, BACnet, Modbus, LON, IP networking, DDC, switches, routers, controllers, gateways, firewalls
3mo
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Systems Administrator
San Antonio, Texas, United States
OnsiteFull Time
2+ YOEExperience with Windows and Linux server operations, sustainment, and management; DoD SECRET clearance; 2 years related experience; Bachelor or Master degree with related experience.
Windows Server, Linux (Red Hat Enterprise Linux), VPN, Active Directory, SCCM, SQL, MySQL, SELinux, DNS, VMware, ESXi, vCenter, vSphere, Networking devices, Firewall
2mo
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Unified Communications Engineer - Senior
San Antonio, Texas, United States
OnsiteFull Time
8+ YOEActive Top-Secret/SCI clearance (or ability to obtain), 8+ years telecommunications experience with Cisco Unified Collaboration, CCNA (required) and an 8140 IAT Level II/III cert, ESXi, DISA STIG familiarity, high school diploma.
Cisco Unified Communications Manager, Cisco IM & Presence, Cisco Expressway, Cisco Video Teleconferencing Systems, Cisco Session Border Controller, Cisco IOS, Tandberg, Polycom, ESXi, Active Directory, VoIP, SIP, ISDN, dot1x, ACLs, firewalls, Microsoft Excel, Microsoft Word, Microsoft Outlook, Microsoft SharePoint, Microsoft Project, Microsoft Visio
1mo
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Network Administrator III (WAN)
San Antonio, Texas, United States
$100k-$105k/yr OnsiteFull Time
7+ YOE7+ years experience installing, configuring, troubleshooting, upgrading, patching, and hardening routers, switches, load balancers and consoles; IAT-II and CCNA required; active Top Secret/SCI clearance; SDN experience desired; must pass government background check.
routers, switches, serial consoles, load balancers, proxies, firewalls, servers, workstations, printers, Storage Area Networks (SAN), Software Defined Networking (SDN)
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