Terrell Hills • 50 milesRemote · Hybrid · Onsite · Field · All Environments
Terrell Hills • 50 milesRemote · Hybrid · Onsite · Field · All Environments
Terrell Hills • 50 milesRemote · Hybrid · Onsite · Field · All Environments
Terrell Hills • 50 milesRemote · Hybrid · Onsite · Field · All Environments
20 firewall engineer jobs at 13 companies in Terrell Hills, TX
2mo
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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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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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Power Systems Automation Engineer
Lakewood or Fairview Heights or Boerne
$84k-$144k/yr OnsiteFull Time
3+ YOEBachelor's in Electrical Engineering or Computer Science; 3+ years in power systems automation and communication; experience with utility/industrial power systems, SCADA and protocols.
SCADA, DNP3, Modbus, IEC 61850, Ethernet/IP, OPC UA, RTUs, RTACs, IEDs, SEL Relays, PLC, HMI, Serial Communications, Ethernet, Firewalls, Security Gateways, Terminal Servers, Cellular Routers, Managed Switches, SDN, IEC 61131-3, Structured Text, Wireshark
1w
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Infrastructure Support Engineer
San Antonio, Texas, United States
OnsiteFull Time
5+ YOEActive DoD Secret clearance, DoD 8570/8140 certifications, 5+ years supporting large networks, experience with routers/switches/firewalls/VPN, TCP/IP, OSPF/BGP, and willingness to work 24x7 shifts.
Routers, Switches, Firewalls, Virtual Private Network devices, OSPF, BGP, TCP/IP, Access Control Lists, Spanning Tree, Packet Analysis, Cisco Switches, Palo Alto Firewalls, F5 devices
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
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
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
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
3w
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Network Engineer 2
San Antonio, Texas, United States
OnsiteFull Time
6+ YOERequires active security clearance with appropriate polygraph, IAT Level I certification, and 6 years of network engineering experience with a master's degree or equivalent education, experience, and industry certification.
LAN, CAN, WAN, Voice and Video, VPN, firewall, Traffic Shaping, Voice over IP (VoIP), GRE Tunneling, IPSec, IP Encryption, Media over IP (MoIP), NAT, Cisco Certified Network Associate, Arista Configuration Essentials, Juniper
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
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/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
2d
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Principal/Sr Principal Network Engineer
San Antonio, Texas, United States
$94k-$176k/yr OnsiteFull Time
5+ YOEBachelor's in STEM with 5 years of related experience or equivalent advanced degree experience; U.S. citizenship, active Top Secret clearance with SCI eligibility, IAT Level II, CCNA, and routed network engineering expertise required.
IPv4, OSPF, VLANs, VPNs, firewalls, Microsoft, Linux, Cisco, VMware vSphere, ESXi, NSX, VXLAN, MLAG, QoS, Ansible, Python, Bash, PowerShell, VoIP, SIP, Active Directory, RADIUS, TACACS+, DNSSEC, SNMP
2mo
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Wireless Network Engineer II
San Antonio, Texas, United States
RemoteFull Time
4+ YOEUS citizen; active DoD Secret or higher clearance; 8-hour day shift; 4+ years network management; 2+ years wireless network management; IASAE Level II or equivalent (or higher); strong documentation and communication skills; ability to work autonomously and lead others.
Networking, Wired and Wireless Networking, Firewalls, Routers, Switches, Documentation
6d
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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
6d
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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
4d
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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
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