L3 Network & Security Engineer

About the Role We are seeking a highly skilled L3 Network & Network Security Engineer with Team Management responsibilities to lead the design, delivery, and support of secure network solutions for enterprise and mid-market customers. As part of an IT System Integration company, this role combines deep technical expertise, team leadership, and customer-facing project delivery. You will act as a technical authority, mentor a team of engineers, and ensure high-quality implementation and support of complex network and security environments. Key Responsibilities Technical Leadership (L3) Act as the L3 escalation point for complex network and security incidents.Design, validate, and implement enterprise network architectures (LAN, WAN, WLAN, Data Center).Lead technical design workshops and solution reviews with customers.Perform advanced troubleshooting across routing, switching, and security domains.Review and approve high-risk configuration changes and deployments.Define technical standards, best practices, and reference architectures. Network Engineering Design and support routing and switching technologies (BGP, OSPF, EIGRP, VLANs, STP, HSRP/VRRP).Deliver WAN, SD-WAN, MPLS, VPN, and internet connectivity solutions.Support network migrations, refresh projects, and infrastructure transformations.Produce high-quality design documents (HLD/LLD), implementation plans, and as-built documentation. Network Security Engineering Design and implement secure network solutions including NGFWs, IDS/IPS, VPNs, and NAC.Define and enforce segmentation, access control, and zero-trust security models.Implement and manage firewall platforms (e.g., Palo Alto, Fortinet, Cisco Firepower, Check Point).Support compliance-driven customer requirements (ISO 27001, SOC 2, PCI-DSS, etc.).Work closely with SOC and security teams on incident response and remediation. Team Management & Mentorship Lead, mentor, and develop a team of L1/L2/L3 network and security engineers.Assign workload, manage escalations, and ensure SLA adherence.Conduct performance reviews, coaching, and technical skill development.Support recruitment, onboarding, and technical training plans.Foster a culture of technical excellence, accountability, and continuous improvement. Project & Customer Engagement Act as a trusted technical advisor for customers.Collaborate with pre-sales teams on solution design, effort estimation, and technical validation.Support Proof Concepts (PoCs) and customer demonstrations.Ensure successful project delivery aligned with scope, timelines, and quality standards.Participate in change management, maintenance windows, and on-call rotations. Required Skills & Experience 5+ years of experience in enterprise networking and network security.Strong hands-on experience in L3 routing, switching, and firewall technologies.Proven experience leading or managing technical teams.Background working in an IT System Integrator, MSP, or project-based environment.Advanced troubleshooting skills across OSI Layers 17.Excellent customer-facing communication and documentation skills.Ability to balance hands-on engineering with leadership responsibilities. Preferred Qualifications CCNP / CCIE / PCNSE / NSE / Check Point CCSA/CCSE or equivalent.Experience with SD-WAN and SASE solutions.Cloud networking and security (AWS, Azure, GCP).Automation and scripting experience (Python, Ansible, Terraform).ITIL or project management exposure is a plus. About the Role We are seeking a highly skilled L3 Network & Network Security Engineer with Team Management responsibilities to lead the design, delivery, and support of secure network solutions for enterprise and mid-market customers. As part of an IT System Integration company, this role combines deep technical expertise, team leadership, and customer-facing project delivery. You will act as a technical authority, mentor a team of engineers, and ensure high-quality implementation and support of complex network and security environments. Key Responsibilities Technical Leadership (L3) Act as the L3 escalation point for complex network and security incidents.Design, validate, and implement enterprise network architectures (LAN, WAN, WLAN, Data Center).Lead technical design workshops and solution reviews with customers.Perform advanced troubleshooting across routing, switching, and security domains.Review and approve high-risk configuration changes and deployments.Define technical standards, best practices, and reference architectures. Network Engineering Design and support routing and switching technologies (BGP, OSPF, EIGRP, VLANs, STP, HSRP/VRRP).Deliver WAN, SD-WAN, MPLS, VPN, and internet connectivity solutions.Support network migrations, refresh projects, and infrastructure transformations.Produce high-quality design documents (HLD/LLD), implementation plans, and as-built documentation. Network Security Engineering Design and implement secure network solutions including NGFWs, IDS/IPS, V