HTC Global Services · 2 weeks ago
Network Support Lead - L3
Brooklyn, NY
Full-time
Onsite
Senior Level, Lead/Staff
10+ years expHTC Global Services is seeking an experienced Network Support Lead (L3) to provide advanced technical leadership and serve as the final escalation point for complex network issues. This role involves troubleshooting, architecture support, firewall management, performance optimization, and mentoring junior engineers.
Information TechnologyInsuranceSoftware
Responsibilities
Act as the final L3 escalation for complex issues involving OSPF, BGP, VLANs, STP, port channels, NAT, ACLs, and VPNs
Perform deep packet analysis using Wireshark, FortiAnalyzer, Syslog to resolve persistent or high-severity issues
Lead and manage bridge calls during P1/P2 network incidents
Contribute to HLD/LLD for new sites, migrations, segmentation, and firewall architecture
Review and validate network designs for scalability, security, and standards compliance
Recommend improvements to routing, switching, and security architectures
Manage and optimize Fortinet FortiGate firewalls, including policies, NAT, UTM profiles, SSL/IPSec VPNs, routing, and HA clusters
Audit Firewall Access Control Policies for compliance and least-privilege access
Participate in security hardening and segmentation strategies
Conduct capacity planning, traffic analysis, and performance tuning
Monitor device health, routing tables, CPU/memory usage, and optimize configurations
Identify chronic issues and implement preventive measures
Develop automation for routine tasks using Python, Bash, or EEM scripting (preferred)
Automate configuration backups, compliance checks, and monitoring integrations
Lead complex network changes, major upgrades, firewall migrations, and routing redesigns
Prepare RFCs, rollback plans, impact assessments, and post-implementation reports
Coordinate network cutovers with application, infrastructure, and ISP teams
Collaborate with ISPs and OEMs (Cisco, Fortinet) for link issues, hardware faults, and TAC cases
Validate circuit performance and troubleshoot last-mile connectivity
Maintain network topology diagrams, design documents, SOPs, and configuration baselines
Enhance L1/L2 documentation and ensure compliance with standards
Mentor L1/L2 engineers in routing/switching, firewall operations, and troubleshooting
Recommend technical training and assist in defining operational standards
Qualification
Required
Deep hands-on experience with Cisco IOS/XE, routing protocols (OSPF, BGP), switching (VLANs, STP, EtherChannel)
Strong expertise with Fortinet FortiGate (FortiOS): policies, NAT, HA, UTM, VPN, routing, diagnostics
Proficiency in NAT, ACLs, IPSec/SSL VPN, segmentation strategies
Experience with NMS/SNMP monitoring, Syslog analytics, and packet capture tools
Working knowledge of automation/scripting (Python, EEM, Bash)
Knowledge of network security best practices and compliance requirements
Experience: 10–12 years in networking, with 3–4 years in L3-level support or senior escalation roles
Certifications: Cisco CCNP Enterprise (strongly preferred; CCNA mandatory), Fortinet NSE 4 (higher NSE levels preferred), Additional routing/firewall/security certifications are a plus
Excellent analytical and troubleshooting skills with a structured approach
Ability to lead high-severity incident bridges and communicate clearly with stakeholders
Strong documentation, planning, and coordination abilities
Proactive, self-driven, and committed to automation and continuous improvement
Collaborative with strong mentoring and knowledge-sharing mindset
Preferred
ITIL v4 Foundation (optional but beneficial)
Benefits
Group Health (Medical, Dental, and Vision)
Paid Time Off
Paid Holidays
401(k) matching
Group Life and Disability insurance
Professional Development opportunities
Wellness programs
A variety of other perks
Company
HTC Global Services
HTC Global Services Inc., is a global provider of Information Technology and Business Process Services and Solutions.
10001+ employees
H1B Sponsorship
HTC Global Services has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (361)
2024 (367)
2023 (440)
2022 (314)
2021 (227)
2020 (438)
Funding
Current Stage
Late StageTotal Funding
$1.2MKey Investors
Michigan Economic Development Corporation
2024-12-10Grant· $1.2M
Leadership Team
Gunasekaran Nadar
CHIEF FINANCIAL OFFICER
Girish Arora
Vice President, Financial Services and Insurance
Recent News
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