Level 3 NOC Engineer
Future Opportunity — Not Currently Hiring
Position Overview
NOCDOC is seeking a highly skilled Level 3 NOC Engineer to join our 24×7 Network Operations Center team. This senior technical role is responsible for designing, implementing, securing, supporting, and optimizing enterprise network and server/infrastructure environments — including virtualization, storage, cloud, and Microsoft infrastructure — across a diverse portfolio of managed services clients.
The Level 3 NOC Engineer serves as the highest technical escalation point within the NOC for complex networking incidents, critical infrastructure outages, and advanced troubleshooting efforts spanning both domains. This role provides technical leadership across routing, switching, firewalls, wireless, network security, Windows Server, virtualization, storage, cloud connectivity, and enterprise infrastructure technologies.
Working closely with engineering teams, architects, security teams, project stakeholders, vendors, and customer organizations, this position helps ensure network and infrastructure environments are highly available, secure, resilient, and aligned with industry best practices.
The ideal candidate is an experienced engineer with strong enterprise networking and systems/infrastructure expertise, security awareness, documentation discipline, and the ability to mentor engineers while improving operational maturity.
This position may be performed remotely or from our office facilities. Candidates must be comfortable supporting a 24×7 operational environment, including scheduled evening, overnight, weekend, holiday, and on-call rotations as required.
Key Responsibilities
Advanced Network & Infrastructure Engineering and Escalation
- Serve as the highest technical escalation point within NOC operations — covering both network and server/infrastructure incidents — including direct phone support for the most complex escalations
- Own escalated tickets through to resolution, ensuring accurate documentation and timely closure in accordance with SLA requirements
- Lead troubleshooting and resolution of complex routing, switching, firewall, wireless, VPN, and connectivity incidents
- Lead advanced troubleshooting efforts involving Windows Server, virtualization platforms, identity services, storage, backups, and enterprise applications
- Design, implement, and optimize enterprise network infrastructure and Windows Server environments
- Perform advanced troubleshooting using packet analysis, traffic analysis, logs, monitoring data, and network telemetry
- Support major incident response and lead resolution efforts for major incidents and service-impacting events, providing technical leadership during outages, migrations, and recovery activities
- Perform root cause analysis (RCA) and develop permanent corrective solutions
Network & Infrastructure Architecture and Modernization
- Participate in network and infrastructure architecture reviews, technology planning, and design activities
- Lead network and server lifecycle initiatives including upgrades, migrations, consolidation, and modernization efforts
- Develop network and infrastructure standards, configuration baselines, and operational procedures
- Evaluate network and infrastructure performance, capacity, availability, and scalability
- Identify opportunities to improve reliability, automation, monitoring, and operational efficiency
Microsoft Infrastructure & Cloud Engineering
- Administer and optimize Microsoft enterprise technologies including Windows Server, Active Directory, Group Policy, Microsoft Entra ID, Microsoft 365, Exchange Online, Microsoft Teams, and Remote Desktop Services
- Support hybrid identity and cloud infrastructure environments
- Assist with Microsoft Azure infrastructure design, implementation, and troubleshooting
- Support Azure Virtual Desktop and modern endpoint infrastructure solutions
- Provide technical guidance for enterprise application integrations and cloud adoption initiatives
Virtualization, Storage & Data Protection
- Deploy, configure, and maintain VMware vSphere, VMware vCenter, Hyper-V, and enterprise virtualization platforms
- Support enterprise storage platforms including SAN/NAS technologies
- Manage backup, disaster recovery, and business continuity solutions
- Perform recovery testing and validate backup effectiveness
- Optimize virtualization performance, resource utilization, and availability
Network & Infrastructure Security and CIS Controls Alignment
- Apply security best practices aligned with industry frameworks including CIS Controls and NIST Cybersecurity Framework concepts
- Support implementation and validation of network and infrastructure security controls including secure configurations, access control, segmentation, logging, and monitoring
- Assist with security posture improvements through network and infrastructure assessments and remediation recommendations
- Partner with SOC and security teams on firewall events, suspicious activity, vulnerability remediation, and security improvements involving servers, identity systems, endpoints, and network infrastructure
- Support validation of CIS Controls including secure configuration of enterprise assets and network devices, account and access control practices, continuous vulnerability management, malware defense and endpoint protection, audit log management and monitoring, data recovery and backup validation, and network/infrastructure defense
- Recommend improvements that strengthen customer security posture and reduce operational risk
Operations, Automation & Documentation
- Develop and maintain advanced SOPs, network and infrastructure standards, diagrams, architecture documentation, troubleshooting guides, and technical documentation
- Perform approved production changes following formal change management processes
- Review monitoring effectiveness and improve alert quality, health checks, and operational visibility through proactive maintenance
- Develop automation opportunities using scripting, configuration management, and infrastructure tools
- Mentor Level 1 and Level 2 engineers through coaching, knowledge sharing, and technical guidance
Customer & Vendor Collaboration
- Participate in customer technical discussions, infrastructure reviews, and planning sessions
- Work directly with carriers, ISPs, vendors, and technology partners to resolve complex issues
- Provide technical recommendations and communicate complex network and infrastructure solutions to technical and non-technical stakeholders
Required Qualifications
- 7–10 years of experience in network engineering, systems/infrastructure engineering, NOC engineering, MSP, or enterprise IT environments
- Extensive experience supporting medium to large-scale enterprise networks and Microsoft Windows Server environments
- Strong expertise in enterprise routing and switching, TCP/IP networking, VLANs and network segmentation, OSPF and BGP fundamentals, VPN technologies, firewall administration, wireless networking, and network troubleshooting and optimization
- Advanced experience supporting Active Directory, Group Policy, Microsoft 365, Exchange Online, Microsoft Teams, Microsoft Entra ID, DNS, DHCP, and Remote Desktop Services
- Extensive experience with VMware vSphere, VMware vCenter, Hyper-V, and enterprise virtualization technologies
- Experience supporting enterprise storage platforms, SAN/NAS technologies, backup, and disaster recovery solutions
- Experience supporting enterprise platforms such as Cisco, Fortinet, SonicWall, WatchGuard, Meraki, or equivalent technologies
- Experience troubleshooting WAN technologies including MPLS, SD-WAN, Internet connectivity, and carrier circuits
- Experience with packet analysis, NetFlow, traffic monitoring, and network performance analysis
- Experience implementing infrastructure and network changes using formal change management processes
- Strong understanding of network and infrastructure security principles and control validation
- Strong analytical, troubleshooting, and root cause analysis skills
- Excellent written and verbal communication skills
- Demonstrated technical leadership and ability to mentor engineers
Preferred Qualifications
- Experience working within a Managed Service Provider (MSP) environment
- Experience supporting multiple customer environments with varied technologies
- Experience with Microsoft Azure and hybrid cloud infrastructure, including Azure Virtual Desktop (AVD)
- Experience administering Microsoft Intune and endpoint management platforms
- Experience with SD-WAN platforms and Zero Trust networking concepts
- Experience with network and infrastructure automation using PowerShell, Python, or Ansible
- Familiarity with SQL Server administration
- Experience with Microsoft Defender and enterprise security technologies
- Experience supporting security frameworks including CIS Controls, NIST CSF, or similar standards
- Experience participating in architecture reviews and technical design sessions
- Familiarity with ITIL-based incident, problem, and change management processes
- Cisco Certified Network Professional (CCNP Enterprise)
- Cisco Certified Specialist certifications
- Fortinet Certified Professional (FCP)
- Palo Alto Networks Certified Network Security Engineer (PCNSE)
- Aruba Certified Professional or equivalent wireless certification
- Microsoft Certified: Windows Server Hybrid Administrator Associate
- Microsoft Certified: Azure Administrator Associate (AZ-104)
- Microsoft Certified: Azure Solutions Architect Expert (AZ-305)
- Microsoft 365 Certified: Administrator Expert
- VMware Certified Professional (VCP)
- CompTIA Security+
- ITIL 4 Foundation
Technical Skills
Enterprise Networking
- LAN/WAN
- TCP/IP
- Routing & Switching
- VLANs
- VPN
- OSPF
- BGP
- MPLS
- SD-WAN
- QoS
- Network segmentation
Microsoft Infrastructure
- Windows Server
- Active Directory
- Group Policy
- Microsoft Entra ID
- Microsoft 365
- Exchange Online
- Microsoft Teams
- DNS
- DHCP
- Remote Desktop Services
Virtualization & Cloud
- VMware vSphere
- VMware vCenter
- Hyper-V
- Microsoft Azure
- Hybrid cloud infrastructure
- Azure Virtual Desktop
Storage & Data Protection
- SAN/NAS
- Enterprise storage platforms
- Backup solutions
- Disaster Recovery
- Business Continuity
- Recovery testing
Security
- Firewalls, ACLs, NAT, site-to-site and remote access VPN
- Secure configuration standards and security control validation
- CIS Controls concepts
- Vulnerability remediation
- Identity security
- Logging and monitoring
- Endpoint security integration
Monitoring & Operations
- SNMP
- WMI
- NetFlow
- Packet analysis
- Performance monitoring and tuning
- Capacity planning
- Incident management
- Change management
- Root cause analysis
Automation & Engineering
- PowerShell
- Python
- Ansible concepts
- Configuration management
- Documentation standards
Professional Skills
- Analytical thinking
- Problem solving
- Communication
- Technical leadership
- Mentorship
- Documentation discipline
- Collaboration
- Attention to detail
- Continuous learning mindset
Success Measures
- Reduced time-to-resolution on complex, escalated network and infrastructure incidents
- Improved network and infrastructure reliability, availability, and performance across supported environments
- Successful delivery of network and infrastructure upgrades, migrations, and modernization initiatives
- Strengthened network and infrastructure security posture aligned with CIS Controls and customer requirements
- Increased Level 1/Level 2 engineer capability through mentorship and knowledge sharing
- Improved documentation, standards, and operational consistency
- Strong collaboration with SOC, Engineering, and customer stakeholders
Career Growth Opportunity
This position provides opportunities to advance into Senior Network Architect, Senior Infrastructure Architect, Cloud Architect, Principal Network/Systems Engineer, Solutions Architect, Technical Consultant, or Engineering Leadership roles while expanding expertise across enterprise networking, Microsoft infrastructure, cybersecurity, cloud infrastructure, automation, and security architecture.
Schedule & On-Call Requirements
- Scheduled day, evening, and overnight shifts
- Weekend and holiday coverage
- On-call rotation responsibilities
- Occasional travel to client locations
- Overtime based on operational requirements
Benefits
About NOCDOC
NOCDOC is a U.S.-based technology operations company with more than 35 years of experience delivering Security Operations Center (SOC), Network Operations Center (NOC), Service Desk, Network Engineering, Automation, and Managed Security Services.
Supporting organizations across North America and internationally, NOCDOC delivers responsive, customer-focused technology operations that help businesses improve reliability, security, and operational efficiency.
At NOCDOC, we invest in our people through continuous learning, mentorship, and career development, providing opportunities to grow into advanced engineering, automation, architecture, and technical leadership roles.