36 firewall engineer jobs at 27 companies in Blanco, 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
2d
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Software Engineer, Network Firewall
Austin or Atlanta
HybridFull Time
Experience building large-scale distributed systems, systems-level programming, networking protocols, network security products, RESTful APIs, data pipelines, and performance optimization for high-throughput systems.
Go, Rust, Linux, netfilter, nftables, eBPF, tc, RESTful APIs, Network namespaces
5d
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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
1w
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Sr. Network Engineer – Network Infrastructure Lead
San Diego or Austin
$145k-$180k/yr OnsiteFull Time
7+ YOE7+ years network engineering with multi-homed internet edge, BGP/OSPF/Layer2-3, SD-WAN, firewall and InfiniBand experience; hands-on with enterprise routers/switches, network monitoring, automation (Ansible/Python); on-call participation.
InfiniBand, BGP, OSPF, ECMP, VLAN, Cisco, Arista, SONiC, Fortinet, Nagios, Zabbix, Prometheus, Grafana, Ansible, Python, OpenStack, VMware, k8s
4d
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Senior Systems Engineer
San Antonio, Texas, United States
$135k-$216k/yr RemotePart Time
20+ YOERequires active TS/SCI clearance with current polygraph, 20 years of systems engineering experience, bachelor's degree or equivalent experience, Mission Systems support, and DoD 8570/8140 certification; CISSP preferred.
Cloud Operations, network management protocols, routers, multiplexers, firewalls, hubs, bridges, gateways
2w
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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
5d
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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
2w
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UNIX DevOps Cloud Engineer
Charlotte or Nashua or Austin
$121k-$205k/yr OnsiteFull Time
8+ YOEExtensive UNIX server operations and cloud automation experience, Azure cloud and IaC expertise, scripting (Python, Puppet, Ruby), CI/CD/DevSecOps skills, container and networking knowledge.
Azure, App Services, Key Vault, Azure Storage, Azure Networking, Azure Monitor, Python, Puppet, Ruby, REST, ARM, Bicep, Terraform, Ansible, Chef, Red Hat Enterprise Linux, Docker, Kubernetes, TCP/IP, DHCP, DNS, firewalls, VLAN
3mo
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Boundary Security Engineer
Fort Meade or San Antonio
$99k-$225k/yr HybridFull Time
5+ YOE5+ years in network security/design for large enterprises or government; firewall/enterprise security design; Palo Alto or Cisco/Juniper devices; packet analysis; DoD 8570 IAT II certification required within 3 months; Secret clearance; HS diploma or GED.
Palo Alto firewalls, Cisco firewalls, Juniper firewalls, Wireshark, SIEM, intrusion detection, intrusion prevention
3mo
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Boundary Security Engineer
Fort Meade or San Antonio
$99k-$225k/yr OnsiteFull Time
5+ YOE5+ years in network security/design for large enterprises or government; firewall/enterprise security design; experience with Palo Alto, Cisco or Juniper; packet analysis with Wireshark; boundary protection; Secret clearance; HS diploma or GED; ability to obtain DoD 8570 IAT Level II within 3 months of start.
Palo Alto firewalls, Cisco firewalls, Juniper firewalls, Wireshark
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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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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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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Network Engineer
Austin, Texas, United States
OnsiteFull Time
5+ YOECCNP plus 5+ years designing, implementing, and supporting enterprise network infrastructure including routing, switching, firewalls, ZTNA, wireless, and WAN/SDWAN; Azure and virtualization experience; strong troubleshooting and documentation skills.
VMWare, Hyper-V, Azure, Cisco IOS, Meraki, Palo Alto, Fortinet, Ubiquiti, Ruckus, GitLab, Ansible, Python, ZTNA
1mo
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Network Engineer
Amsterdam or London or Chicago or Austin or New York City or Sydney or Shanghai or Hong Kong or Singapore or Taipei or Mumbai
OnsiteFull Time
10+ YOE10+ years experience designing, implementing and troubleshooting complex LAN/WAN and data center networks; hands-on Arista/Cisco experience, IaC, multi-zone firewalls, Unix administration, and international WAN management.
Arista, Cisco, Infrastructure as Code (IaC), Unix
1w
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Support Engineer
Austin, Texas, United States
HybridFull Time
5+ YOE5+ years cross-platform support (3+ in Cloud/MSP), bachelor\u0002s or equivalent, strong Cisco, VMware, backup/DR, firewall, ServiceNow, automation (Ansible/Terraform), excellent communication and problem-solving.
ChatGPT, Copilot, ServiceNow, Ansible, Terraform, Veeam, Commvault, Zerto, VCDA, VMware, Pure, IBM, NetApp, FortiGate, Palo Alto, Cisco, Linux, Unix, Windows
3w
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Network Engineer
Miramar or Atlanta or Austin or Houston or Dallas or Orlando or Tallahassee or West Palm Beach or Fort Lauderdale or Phoenix or Charlotte
HybridFull Time
7+ YOEDesign, implement, operate, and maintain enterprise LAN/WAN/firewall/Wi‑Fi systems; 7+ years routing and switching and multi‑site network administration; 2+ years cloud networking; scripting and automation experience.
OSPF, BGP, BGP-EVPN, VxLAN, Palo Alto, Panorama, Arista, Cisco, 802.1x, RADIUS, Tacacs+, IPsec, ExpressRoute, Microsoft Azure Virtual WAN, AWS Direct Connect, Transit Gateway, NSGs, Azure Firewall, SNMP, NetFlow, syslog, Wireshark, Powershell, Ansible, Python, Bash, Terraform, Azure Resource Manager (ARM), Azure Network Watcher, AWS CloudWatch, VPC Flow Logs
3d
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Senior Systems Engineer
San Antonio, Texas, United States
$135k-$216k/yr OnsitePart Time
20+ YOERequires TS/SCI clearance with polygraph, 20 years of Systems Engineering experience, a bachelor's degree or five additional years' experience, 8570/8140 certification, and Mission Systems experience.
routers, multiplexers, firewalls, hubs, bridges, gateways
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