Senior Network Security Engineer

Location: Cleveland, OH

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.

Summary of 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

Minimum Qualifications  

• 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

Preferred Qualifications

• 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

The salary range for this role is $105,000 to $135,000.  An employee’s pay within the salary range will be based on numerous factors including, but not limited to, relevant education, qualifications, experience, skills, geographic location and business or organizational needs.

Cleveland-Cliffs is a leading North America-based steel producer with focus on value-added sheet products, particularly for the automotive industry. The Company is vertically integrated from the mining of iron ore, production of pellets and direct reduced iron, and processing of ferrous scrap through primary steelmaking and downstream finishing, stamping, tooling, and tubing. We offer an excellent total compensation package, including competitive pay with variable compensation opportunity, health insurance, retirement plan, education assistance, paid time off, and more. 

Cleveland-Cliffs Inc. is committed to working with and providing reasonable accommodation to individuals with disabilities. If, because of a medical condition or disability, you need a reasonable accommodation for any part of the employment process, please send an e-mail to careers@clevelandcliffs.com or call 1-(312) 899-3097 and let us know the nature of your request and your contact information. Do not email your application materials to this email address. Application materials sent to this email address will not be considered.

Cleveland-Cliffs Inc. is an equal opportunity employer – M/F/Veteran/Disability. We are a drug-free workplace and conduct pre-employment screening as a condition of employment.