Expert Network Engineer

About Us About Us (Ensono) Ensono is an expert technology adviser and managed service provider. As a relentless ally, we accelerate clients’ digital transformation to achieve business outcomes that stand to last. Our dedicated team helps organizations optimize today’s systems across any hybrid environment with services such as consulting, mainframe and application modernization, public cloud migration and cloud-native development. With certified experts in AWS, Azure and Google Cloud and recognized as Microsoft Datacenter Transformation Partner of the Year, Ensono has over 3500+ associates globally and is headquartered in greater Chicago. We care about your success, offering comprehensive strategic and managed services for mission-critical applications. Our Advisory and Consulting services can help upfront with an application strategy or find the right places for your applications – whether it’s public, multi or hybrid cloud, or mainframe. And because we span across all mission-critical platforms, we can meet you wherever you are in your digital transformation journey, with 24/7 support when you need it. We are your relentless ally, flexing with you when challenges emerge so you don’t feel stuck in place. With cross-platform certifications and decades of experience, our technology experts have become an extension of your team so you’re continuously innovating – doing more with less while remaining secure. And that’s just the beginning. Role Summary We are seeking a highly experienced Network Expert with 15+ years of expertise in designing, implementing, troubleshooting, and supporting complex enterprise and data center network environments. The ideal candidate will possess deep technical knowledge across routing, switching, network security, load balancing, SD-WAN, and modern data center technologies while serving as a trusted Subject Matter Expert (SME) for critical business and client environments. This role is primarily focused on network operations (60%) , including management of complex incidents, escalations, problem management, root cause analysis, performance optimization, and ensuring network stability across enterprise environments. The remaining 40% of the role involves network design, deployment, architecture review, and implementation of strategic infrastructure initiatives , including data center, cloud, and network transformation projects. Candidate must demonstrate excellent verbal and written communication skills, with the ability to effectively interact with customers, senior stakeholders, vendors, and cross-functional teams. The successful candidate will be expected to lead technical discussions, present solutions and recommendations, provide operational updates, and build strong customer relationships while ensuring high levels of service delivery and customer satisfaction. Network Operations & Support Provide L3/L4 support for enterprise, data center, and cloud network environments. Act as the primary escalation point for critical incidents, major outages, and performance issues. Lead troubleshooting of routing, switching, firewalls, load balancers, SD-WAN, and wireless technologies. Perform Root Cause Analysis (RCA) and drive preventive actions to improve service stability. Network Design & Deployment Design, implement, and support enterprise, WAN, and data center network solutions. Lead network deployments, migrations, upgrades, and infrastructure transformation projects. Develop and review network architecture, implementation plans, and technical designs. Support modern data center technologies including Cisco ACI, NSX, EVPN-VXLAN, Nexus, and ASR platforms. Conduct risk assessments, change planning, and post-implementation validation. Security & Compliance Design and support secure network solutions using Palo Alto, Fortinet, Check Point firewalls, and WAF technologies. Drive network security, segmentation, firewall governance, and vulnerability remediation initiatives. Mentoring & Continuous Improvement Mentor and guide junior network engineers in resolving complex technical issues. Coach team members and help develop their technical and professional capabilities. Conduct regular technical review and knowledge-sharing sessions to identify and bridge skill gaps. Drive automation, AI, and process improvement initiatives to enhance operational efficiency. Promote engineering best practices, standardization, and operational excellence. Required Skills & Qualifications Bachelor’s degree in Computer Science, IT, or related field 15+ years of experience in network field Technical Expertise (Must Have) Routing & Switching: BGP, OSPF, EIGRP, vPC, STP, VLAN Network Security: Palo Alto, Fortinet, Check Point, Cisco ASA Load Balancing: F5, AVI (NSX ALB), Citrix NetScaler Data Center Technologies: Cisco ACI, VMware NSX, VXLAN, EVPN, Nexus switches, ASR routers Enterprise Technologies: SDWAN, ISR routers, Catalyst Switches, Wireless Controllers/AP Strong troubleshooting and analytical skills Strong understanding of ITIL processes (Incident RCA, Change, Problem Management) Good to Have Cloud Networking: GCP, AWS, Azure Virtualization & SDN: VMware NSX (DFW, T0/T1, vSphere) Automation/AI knowledge (Python, Ansible, API-based integrations, Terraform) Tools Knowledge (Good to Have) ServiceNow Monitoring Tools: Entuity, TrueSight, vROPS Reporting & Documentation: Visio, Excel, PowerPoint. Preferred Certifications Cisco: CCNA / CCNP / CCIE Fortinet certifications, Checkpoint Google Cloud certifications   Soft Skills Excellent verbal and written communication skills Strong client relationship and stakeholder management skills Ability to coach and develop team members Strong problem-solving and analytical thinking skills Effective decision-making under pressure Excellent troubleshooting and root cause analysis mindset Cross-functional collaboration and teamwork skills Strong planning, prioritization, and organizational skills High level of ownership, accountability, and professionalism Ability to manage multiple priorities in a fast-paced environment Adaptability and willingness to learn new technologies Knowledge-sharing and technical training capabilities Strong attention to detail and commitment to operational excellence Ability to remain calm and effective during major incidents and outages shift timing - 24/7 rotational shift. We are an equal opportunity employer. All qualified applicants will be considered for employment without regard to caste, colour, creed, religion, gender, gender identity, sexual orientation, age, disability, HIV status, or any other status protected by law. Candidates with disabilities who require accommodations during the recruitment process are encouraged to contact our Talent Acquisition team to place a request.