6 Results for Network Security Engineer Jobs in Chicago, IL

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Network Engineer

Deer Park, IL
onsite
Permanent / Full Time
80000 - 100000 USD / Yearly
We are looking for a Network Engineer to support and enhance a secure, high-performing enterprise network environment in Deer Park, Illinois. This role focuses on maintaining core routing and firewall infrastructure, improving connectivity across the organization, and helping ensure reliable network operations. The ideal candidate brings strong hands-on experience with Cisco networking technologies and Palo Alto security platforms, along with a solid understanding of dynamic routing protocols. Responsibilities: • Manage, configure, and optimize Cisco routing infrastructure to maintain dependable and efficient network performance. • Administer Palo Alto and Cisco ASA firewall environments, including rule updates, security policy enforcement, and ongoing performance review. • Monitor network health, identify connectivity or performance issues, and resolve incidents to reduce downtime and service disruption. • Support Border Gateway Protocol (BGP) configuration and troubleshooting to sustain stable external and internal routing paths. • Implement network changes, upgrades, and improvements while following operational standards and security requirements. • Collaborate with technical teams to evaluate network needs, recommend solutions, and support infrastructure-related projects. • Maintain accurate documentation for network architecture, device configurations, and support procedures. • Participate in troubleshooting complex networking problems across routers, firewalls, and related infrastructure components.
2026-09-23T00:00:00Z

Network Engineer

Chicago, IL
onsite
Permanent / Full Time
110000 - 135000 USD / Yearly
We are looking for an experienced Network Engineer to support and enhance enterprise networking operations in Chicago, Illinois. This role focuses on building reliable, secure connectivity across on-premises and cloud-based environments while improving visibility, automation, and operational performance. The ideal candidate will be comfortable working in a fast-paced support setting and will bring strong technical depth across routing, firewalls, wireless infrastructure, and network monitoring. MUST HAVE SOLAR WINDS EXPERIENCE. Responsibilities:• Design and deploy scalable network solutions across campus, wireless, SD-WAN, and cloud environments to meet business and operational needs.• Maintain and troubleshoot complex multi-vendor infrastructure, resolving incidents and service requests within a high-volume, ticket-driven support model.• Strengthen network security by addressing vulnerabilities, coordinating remediation activities, and applying secure configuration standards across network platforms.• Administer and optimize routing, switching, and perimeter security technologies, including Cisco routers, Cisco ASA, and Palo Alto firewalls.• Configure and support dynamic routing protocols such as BGP to ensure resilient and efficient connectivity between internal and external networks.• Develop scripts and automation tools that streamline repetitive operational tasks, improve consistency, and reduce manual intervention.• Implement monitoring and observability capabilities that provide actionable insight into network health, performance, and service availability.• Partner with cross-functional teams to support infrastructure improvements, document technical designs, and advance network operational maturity.
2026-09-09T00:00:00Z

Infrastructure & Security Engineer

Naperville, IL
onsite
Permanent / Full Time
120000 - 148000 USD / Yearly
Our client is seeking an experienced Infrastructure Security Engineer to support and secure a hybrid Microsoft environment spanning both on-premises and cloud platforms. This role is ideal for a hands-on professional with deep experience across traditional server and network infrastructure, along with responsibility for enterprise security tooling, threat monitoring, and ongoing security operations. The organization is currently in a hybrid state and actively transforming to a more cloud-centric environment, so this individual will play a key role in both day-to-day operational security and longer-term modernization efforts. Based on general knowledge. Key Responsibilities<ul><li>Manage and secure core infrastructure, including servers, networks, firewalls, switches, VPNs, and related systems in a hybrid on-premises and cloud environment. Based on general knowledge.</li><li>Administer, maintain, and optimize security tools such as endpoint protection, vulnerability management, SIEM, email security, identity and access management, and monitoring platforms. Based on general knowledge.</li><li>Monitor infrastructure and security events, investigate alerts, respond to incidents, and support remediation efforts. Based on general knowledge.</li><li>Partner with infrastructure and leadership teams to strengthen security controls across Microsoft technologies, including Active Directory, Azure, Microsoft 365, and related platforms. Based on general knowledge.</li><li>Support the company’s transition from traditional on-premises infrastructure to cloud-based solutions by helping design and implement secure architectures and best practices. Based on general knowledge.</li><li>Perform vulnerability assessments, patch management coordination, system hardening, and access reviews across servers, endpoints, and network devices. Based on general knowledge.</li><li>Develop and maintain security documentation, standards, procedures, and incident response processes. Based on general knowledge.</li><li>Assist with compliance, audit readiness, and security improvement initiatives. Based on general knowledge.</li><li>Collaborate with internal teams and third-party vendors to ensure reliable infrastructure performance and effective security coverage. Based on general knowledge.</li></ul>
2026-09-22T00:00:00Z

Network/Systems Administrator

Chicago, IL
onsite
Temporary / Contract
42 - 55 USD / Hourly
We are looking for a Network/Systems Administrator to provide onsite support for core infrastructure operations in Chicago, Illinois. This Long-term Contract position focuses on keeping server, virtualization, storage, and network environments stable, secure, and well maintained while partnering with technical teams to resolve issues efficiently. The ideal candidate brings practical experience across VMware, Cisco networking, enterprise storage, and physical cabling, along with a dependable, hands-on approach to day-to-day infrastructure support. Responsibilities: • Manage virtual infrastructure by supporting VMware hosts, clusters, virtual machines, and associated platform components. • Track system health, investigate performance concerns, and carry out scheduled maintenance such as patching, upgrades, backups, and operational checks. • Provide administration for enterprise storage platforms, including monitoring utilization, addressing connectivity issues, and assisting with performance tuning. • Configure and troubleshoot Cisco network equipment, including switch ports, VLAN assignments, and general LAN connectivity. • Install and maintain copper and fiber cabling by tracing lines, labeling connections, organizing runs, and resolving physical network issues. • Perform hardware deployment tasks such as rack installation, equipment replacement, and upkeep of server rooms or network closets. • Diagnose infrastructure problems affecting servers, storage, network services, and user connectivity, escalating complex issues when needed. • Keep technical records current by updating diagrams, asset inventories, procedural documentation, and change history. • Follow established security standards, operational procedures, and change-control practices while coordinating with infrastructure, security, application, and support teams.
2026-10-01T00:00:00Z

Software Engineer

Chicago, IL
remote
Permanent / Full Time
135000 - 155000 USD / Yearly
We are seeking a Senior Software Engineer with deep experience in backend Java development and Android application engineering. This role will focus on designing, building, and maintaining scalable backend services while also contributing to Android mobile applications. The ideal candidate brings strong technical expertise, a collaborative mindset, and a passion for delivering reliable, high-quality software. Key Responsibilities<ul><li>Design, develop, test, and maintain backend services using Java and Spring Boot.</li><li>Build and enhance Android applications with a focus on performance, usability, and maintainability.</li><li>Collaborate with product, business, and engineering stakeholders to define technical requirements and deliver solutions.</li><li>Develop RESTful APIs and integrations that support mobile and web-based applications.</li><li>Write clean, efficient, and well-documented code following established coding standards.</li><li>Participate in architecture discussions, technical design reviews, and sprint planning sessions.</li><li>Perform code reviews and contribute to best practices for software quality, scalability, and security.</li><li>Troubleshoot and resolve application, database, and system performance issues.</li><li>Support deployment activities, testing efforts, and ongoing production maintenance.</li><li>Contribute to continuous improvement initiatives across development workflows, tooling, and engineering processes.</li></ul>
2026-09-22T00:00:00Z

SOC Engineer

Chicago, IL
onsite
Permanent / Full Time
95000 - 125000 USD / Yearly
We are seeking a Senior SOC Engineer to help monitor, detect, investigate, and respond to cybersecurity threats across enterprise environments. This role is responsible for strengthening security operations, improving detection capabilities, and supporting incident response efforts to protect systems, networks, and data. The ideal candidate brings deep experience in security operations, threat detection, incident investigation, and security tooling. This person is analytical, collaborative, and able to operate effectively in fast-paced environments where timely response and strong judgment are critical. Key Responsibilities<ul><li>Monitor security events, alerts, and incidents across networks, endpoints, cloud environments, and applications.</li><li>Investigate suspicious activity, triage alerts, and determine severity, impact, and appropriate response actions.</li><li>Lead or support incident response activities, including containment, eradication, recovery, and post-incident analysis.</li><li>Develop, tune, and maintain SIEM use cases, correlation rules, dashboards, and alerting logic.</li><li>Analyze logs and telemetry from multiple security tools to identify threats, anomalies, and indicators of compromise.</li><li>Collaborate with infrastructure, engineering, and IT teams to remediate vulnerabilities and strengthen security controls.</li><li>Conduct threat hunting activities to proactively identify malicious behavior or hidden risks.</li><li>Support the development and maintenance of SOC processes, playbooks, runbooks, and escalation procedures.</li><li>Mentor junior analysts and contribute to the maturity of security operations practices.</li><li>Recommend improvements to detection engineering, incident handling, and operational workflows.</li><li>Prepare incident reports, metrics, and executive-ready summaries for technical and non-technical stakeholders.</li><li>Stay current on emerging threats, attacker techniques, and cybersecurity best practices.</li></ul>
2026-09-22T00:00:00Z

6 results for Network Security Engineer in Chicago, IL