Lead Network Engineer (Tier 3 Network support)
Core
Design, implement, and support large-scale multi-vendor MPLS network environments for Mastercard's global infrastructure, including greenfield site build-outs and expansion.
Role type
Lead Network Engineer (Tier 3)
Builds
Global MPLS networks, SD-WAN overlays, secure firewalls, and network automation solutions for Mastercard's payment processing infrastructure.
Domain
Financial Services / Network Engineering
Deliverable
production ML models | product features | dashboards & analysis | research | client delivery | infrastructure | physical/clinical work
Required skills
BGP, MP-BGP, OSPF, EIGRP, IS-IS, Spine-Leaf architecture, SD-WAN (Cisco, Viptela, Fortinet), MPLS, Traffic Engineering, Segment Routing, IPSec VPN, DMVPN, GRE, Firewall policy design, NAT, Zero Trust, Layer 2/3 troubleshooting, packet traces, flow analysis, routing convergence, failover analysis, HLD/LLD documentation, migration planning, test planning, multi-vendor triage
Preferred skills
Ansible, Python scripting, YAML, Jinja2, REST APIs, Git/GitHub, CCNP, CCIE, CCSE, CCSA, PCNSE, NSE4, NSE5, NSE7
Technologies
Cisco ASA, Firepower, Check Point, Palo Alto Networks, Fortinet, FortiGate, Cisco DNA Center
Responsibilities
Prepare high-level and low-level network designs for network expansion and new site build-outs; coordinate with internal stakeholders, engineering teams, and external vendors to ensure design, implementation, validation, and go-live readiness; troubleshoot complex Layer 2/3 network issues and perform multi-domain triage; document designs, migration plans, and operational processes; provide operational guidance and testing support for network implementations.
Seniority
Senior, hands-on IC with leadership responsibilities