Senior Network Security Engineer

Cleveland-Cliffs

8d•$105,000 - $135,000•Onsite

About The Position

Cleveland-Cliffs is seeking a hands-on Senior IT Network Engineer to design, deploy, and maintain the enterprise network, with a strong emphasis on the automation and observability solutions that keep it reliable, secure, and supportable. Reporting to the IT Network Manager and working alongside a team of experienced Network and Network Security Engineers, this senior role is automation-first — treating manual, repetitive work as a problem to be solved through code, orchestration, and intelligent tooling. The engineer brings a DevOps mindset to network operations (NetDevOps), applying version control, infrastructure-as-code, CI/CD pipelines, and automated testing to how the network is built, changed, and validated. Security is embedded in the work: the engineer builds visibility and automation that strengthen the organization's security posture and support rapid detection and response across corporate, mining, and steelmaking operations in a multi-site environment. As a senior member of the team, the engineer serves as a technical leader and mentor and is curious about how emerging AI-based technologies can improve network operations and security. Success in this role is measured by execution: automation delivered, visibility improved, and incidents detected and resolved quickly. This position is critical in supporting the success of Cleveland-Cliffs and provides excellent opportunity for career growth and progression.

Requirements

Bachelor's degree from an accredited four-year college or university, or equivalent combination of education and experience
Strong hands-on network engineering experience supporting enterprise network architecture in a production environment
Hands-on experience with enterprise routing and switching, including routing protocols such as OSPF, EIGRP, and BGP, and LAN technologies such as VLANs, Spanning Tree (STP/RSTP), and EtherChannel
Cisco Certified Network Associate (CCNA) certification
5+ years of experience deploying and maintaining enterprise-scale network monitoring and observability systems
5+ years of experience designing and implementing network automation solutions
Demonstrated automation mindset, with a track record of scripting, orchestration, and eliminating manual processes through code
Working knowledge of DevOps concepts — such as version control, CI/CD, and infrastructure-as-code — and how they apply to network change and deployment
Working knowledge of network security principles, including firewalls, segmentation, and access control
Strong organizational, troubleshooting, and communication skills, with the ability to manage multiple concurrent projects
Ability to work effectively in a fast-paced environment and respond to escalations outside standard business hours
Positive attitude, growth mindset, and commitment to continuous learning

Nice To Haves

Bachelor's degree in Computer Network Engineering or a related technical discipline
Cisco Certified Network Professional (CCNP) certification or higher
Hands-on experience applying AI-based or machine-learning technologies to operational, monitoring, or automation use cases
Experience building CI/CD pipelines and applying NetDevOps or GitOps workflows to network change and deployment
Hands-on experience with network security technologies such as next-generation firewalls, network access control (NAC), and IT/OT segmentation
Experience automating security controls, compliance validation, or vulnerability and patch remediation workflows
Experience integrating log management, alerting, and incident response tooling, including SIEM or security analytics platforms
Experience in multi-site industrial, manufacturing, or critical infrastructure environments, including IT/OT convergence

Responsibilities

Develop, maintain, and optimize our monitoring and observability infrastructure — including monitoring, logging, and tracing capabilities — to ensure high availability, scalability, and security
Design and build automation to streamline deployment, configuration, monitoring, and incident response, reducing manual effort and improving consistency across the environment
Apply DevOps practices to network operations — including version control, infrastructure-as-code, CI/CD pipelines, and automated testing and validation — to deliver changes faster and more reliably
Manage network configurations and automation code in source control, with peer review, change tracking, and repeatable, auditable deployment workflows
Build and maintain security monitoring, alerting, and telemetry that improve threat visibility, support detection and response, and feed security operations and incident response workflows
Automate security-related tasks such as configuration compliance, firewall and access policy validation, device hardening, and patch and firmware remediation to enforce cybersecurity standards at scale
Apply AI-based technologies and analytics to improve anomaly detection, event correlation, root cause analysis, and predictive network operations
Serve as a hands-on technical resource for complex configuration, troubleshooting, and escalation activities in production environments
Execute automation and observability initiatives end to end — scoping, scheduling, tracking milestones, and delivering on commitment dates
Partner with Cyber Security and plant engineering teams on secure network operations, including visibility and segmentation between IT and operational technology (OT) environments
Support network security operations by providing the monitoring data, automation, and integrations needed for firewall, NAC, VPN, and segmentation technologies
Continuously research, evaluate, and recommend new automation, DevOps, observability, security, and AI-driven tools and technologies that improve the reliability, security, and supportability of the network environment
Report project status, risks, and operational and security metrics to leadership on a regular cadence
Support a 24x7x365 fast-paced operational environment, including participation in on-call escalation
Travel to other Cleveland-Cliffs locations as required (approximately 10%)
Perform other duties as assigned; responsibilities may evolve with business needs, technical developments, or operational requirements