Firewall jobs in Belleville, IL

St. Louis, Missouri

•

24d ago

Key Requirements: 10+ years of cybersecurity experience with strong OT/ICS security architecture expertise. Experience securing SCADA, PLC, DCS, HMI, industrial networks, and critical infrastructure. Strong knowledge of IEC 62443, NIST CSF, NIST SP 800-82, and industrial security best practices. Design network segmentation, zones/conduits, firewalls, secure remote access, IDS/IPS, and Zero Trust architectures. Experience with IT/OT integration, vulnerability management, incident response, risk a

Easy Apply

Contract

Up to 160

Network Security Engineer / Remote / Firewall

Remote

•

Today

Our client is a large enterprise organization looking for a Network Security Engineer to join their team on a contract basis. This fully remote role will focus on network security, firewall security and policy analysis, configuration compliance, vulnerability management, and security risk remediation while supporting EST business hours and collaborating with U.S.-based and offshore teams. This is a great opportunity for a security professional who enjoys investigating security risks and understa

Easy Apply

Contract

$60 - $75

Cyber Defense Analyst [Various Levels] Contingent

Belleville, Illinois

•

Today

Position Description: Cyber Defense Analyst Position Overview & Metadata Attribute Specification Details Position Title Cyber Defense Analyst / Cybersecurity Operations Lead Capability Area Cybersecurity Operations (CSO) DCWF Work Role Code 621 - Cyber Defense Analyst Minimum Proficiency Level Intermediate / Advanced Key Personnel Status Designated Key Personnel (Cybersecurity Operations Lead) Clearance Requirement Active Top Secret Clearance Position Summary The Cyber Defense Ana

Full-time

USD 95,000.00 - 105,000.00 per year

SATCOM IP Network Support Analyst

Shiloh, Illinois

•

Today

Our customer is the Defense Information Systems Agency (DISA) and acts as the provider of GIG/Defense Information System Network (DISN) services to its customers, the Department of Defense (DoD) and national security organizations. This position directly supports the DISA-provided GIG capabilities and services in the 24x& DISA Global Operations Center (DGOC). The Leidos Digital Modernization Sector and Global Solutions Management-Operations II (GSMO-II) have an opening in our Enterprise SATCOM

Full-time

USD 48,100.00 - 86,950.00 per year

SATCOM IP Network Support Specialist

Shiloh, Illinois

•

Today

Full-time

USD 48,100.00 - 86,950.00 per year

Enterprise SATCOM / Network Administrator

Scott Air Force Base, Illinois

•

Today

Job Overview Job Title: Enterprise SATCOM / Network Administrator Job Location: Scott AFB, IL Job Responsibilities Trace Systems is actively recruiting for an experienced and cleared Enterprise SATCOM / Network Administrator to join our team on-site on Scott AFB, IL. This position supports the Defense Information Systems Agency (DISA) Enterprise SATCOM Gateway Services (ESGS), providing worldwide 24/7/365 technical and operational support to tactical customers accessing DoD Gateway facilities

Full-time

USD 54,000.00 - 56,000.00 per year

L&I IT Network and Telecommunications - Senior/Specialist

Remote or Tumwater, Washington

•

Today

Salary : $94,620.00 - $127,248.00 Annually Location : Thurston County - Tumwater, WA Job Type: Full Time - Permanent Remote Employment: Remote Optional Job Number: 2026-08296 Department: Dept. of Labor & Industries Division: Information Technology - Enterprise Computing & Support Services Opening Date: 10/12/2026 Closing Date: 10/26/2026 11:59 PM Pacific Salary Information: The high end of the salary range, Step M is typically a longevity step Description Our Mission: Keep Washington Safe and Wo

Full-time

USD 94,620.00 - 127,248.00 per year

Enterprise Voice Engineer III

Shiloh, Illinois

•

Today

Our customer, the Defense Information Systems Agency (DISA), provides, operates, and assures command and control of the Defense Information System Network (DISN) services to its customers, the department of Defense (DoD) and national security organizations. This position directly supports the DISA-provided capabilities and services. The Leidos Digital Modernization Sector/Global Solutions Management-Operations II (GSMO-II) contract has an opening for an Enterprise Voice Engineer. The Enterprise

Full-time

USD 73,450.00 - 132,775.00 per year

Network and Systems Admin

St. Louis, Missouri

•

Today

Overview Empower AI is AI for government. Empower AI gives federal agency leaders the tools to elevate the potential of their workforce with a direct path for meaningful transformation. Headquartered in Reston, Va., Empower AI leverages three decades of experience solving complex challenges in Health, Defense, and Civilian missions. Our proven Empower AI Platform provides a practical, sustainable path for clients to achieve transformation that is true to who they are, what they do, how they wo

Full-time

USD 63,500.00 per year

Splunk Engineer

Scott Air Force Base, Illinois

•

Today

REQUIRED: TS/ w/ SCI and ship Job Description: We have an IMMEDIATE NEED a highly skilled Senior Splunk Administrator to join our team and take charge of designing, implementing, and maintaining our Splunk environment. The ideal candidate will possess a deep understanding of Splunk architecture and its various components including forwarders, indexers, and web interfaces. Moreover, proficiency in setting up Splunk on a Red Hat Enterprise Linux 8 (RHEL 8) system that is hardened is essential fo

Full-time

USD 78,000.00 per year

Implementations Network Engineer I

Shiloh, Illinois

•

Today

Full-time

USD 50,700.00 - 91,650.00 per year

Datacenter Network Support Engineer L2

St. Louis, Missouri

•

20d ago

Job Summary: We are seeking a motivated and skilled Level 2 Network Technician to join our team. This role involves maintaining and supporting the data center infrastructure, including troubleshooting, hardware installations, and ensuring the data center's cleanliness and organization. Key Responsibilities: Troubleshoot and execute installations with guidance from the NOC or engineering team on IT devices: Physical Servers Storage & Backup Devices Server Appliances Hyper-Converged Infrastructure

Full-time

Network Engineer II

St. Louis, Missouri

•

Today

Job Title: Network Engineer II Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI Employee Type: Regular Percentage of Travel Required: Up to 10% Type of Travel: Local * * * The Opportunity: CACI is looking for a Network Engineer to provide support for LAN/WAN by developing network support processes, procedures and guidelines for troubleshooting network even and performing sustaining tasks. This role will design and maintains network env

Full-time

USD 63,300.00 - 129,700.00 per year

Implementations Network Engineer II

Shiloh, Illinois

•

Today

Our customer, the Defense Information Systems Agency (DISA), provides, operates, and assures command and control of the Defense Information System Network (DISN) services to its customers, the department of Defense (DoD) and national security organizations. This position directly supports the DISA-provided capabilities and services. Job Description: The Leidos Digital Modernization Sector/Global Solutions Management-Operations II (GSMO-II) contract has an opening for an Implementations Network

Full-time

USD 59,150.00 - 106,925.00 per year

Implementations Network Engineer

Shiloh, Illinois

•

Today

Full-time

USD 59,150.00 - 106,925.00 per year

System Engineer

Scott Air Force Base, Illinois

•

Today

REQUIRED: TS/ w/ SCI and ship Job Description: We have an IMMEDIATE NEED for a Systems Integration Engineer to provide technical support for the integration of various sub-systems. As a Systems Integration Engineer on this program, you will be a member of a team that interacts with technical and non-technical teammates including customers and vendors, but primarily with subject matter expert teammates. In this role, you will provide technical assistance, administer configurations, support tes

Full-time

USD 78,000.00 per year

Systems Engineer - ArcGIS Enterprise | TS/SCI

St. Louis, Missouri

•

Today

Overview Build and Sustain Enterprise Technology Supporting Critical National Security Missions. Join Esri`s Professional Services organization and help deploy, integrate, migrate, and optimize ArcGIS Enterprise environments supporting mission-driven customers. You`ll solve complex technical problems across enterprise infrastructure, operating systems, cloud, networking, security, databased, and ArcGIS while working directly with customers to deliver reliable enterprise solutions. Esri has a

Full-time

USD 120,640.00 - 197,600.00 per year

Network Security Engineer (Palo Alto Focus)

Remote

•

9d ago

We are seeking an experienced Network Security Engineer to manage, maintain, and enhance our perimeter and internal security infrastructure. In this role, you will serve as the primary subject matter expert for our Palo Alto Networks firewall environment, ensuring high availability, robust protection against cyber threats, and seamless enterprise connectivity. This position includes participation in an on-call rotation to support critical incident response and maintenance outside standard busine

Easy Apply

Full-time, Third Party

100 - 130

Senior System Engineer - ArcGIS (Mission-Focused)

St. Louis, Missouri

•

Today

Overview Join Esri`s Professional Services team and lead the design and delivery of mission critical ArcGIS deployments supporting Defense and Intelligence operations. As a Senior System Engineer, you will architect and optimize enterprise scale geospatial systems across complex, secure environments. You will guide customers on deployment strategies, high availability architectures, system performance, and integration across cloud, on-premises, and hybrid infrastructures. You will act as a tr

Full-time

USD 156,000.00 - 239,200.00 per year

System Engineer - ArcGIS (Mission-Focused)

St. Louis, Missouri

•

Today

Overview Join Esri`s Professional Services team and help design, deploy, and optimize mission critical geospatial systems that support national security operations. In this role, you will work directly with mission focused organizations to implement and modernize enterprise ArcGIS environments across complex, secure infrastructures. You will architect and support deployments across cloud, on-premises, and hybrid environments, ensuring performance, scalability, and reliability for high impact o

Full-time

USD 120,640.00 - 197,600.00 per year

Firewall jobs in Belleville, IL, USA