LSEG - Senior Network Engineer - Routing & Switching

Description:

Job Summary:

Senior Network Engineer The ideal candidate will have 10+ years of hands-on experience in designing, implementing, and managing complex network environments.

This role demands deep expertise in Routing & Switching, Wireless Networking, SD-WAN, Cisco Catalyst platforms, FortiGate Firewalls, DMVPN.

Key Responsibilities:

- Design, deploy, and maintain Enterprise Office Network infrastructure across multiple sites.

- Configure and troubleshoot Cisco Catalyst and Juniper EX platforms routing and switching platforms.

- Design, Implement and Manage / optimize wireless networks, including Cisco WLCs and APs.

- Implement and manage SD-WAN solutions.

- Administer and secure FortiGate / Juniper SRX Firewalls including policy creation, VPN setup, and threat management.

- Design and support DMVPN topologies and S2S VPN for secure site-to-site connectivity.

- Perform network performance tuning, capacity planning, and proactive monitoring.

- Collaborate with cross-functional teams to support business continuity and disaster recovery.

- Document network designs, configurations, and operational procedures.

- Participate in oncall rotation and provide Tier 3 support for escalated issues.

Required Skills & Qualifications:

- Minimum 10 years of experience in enterprise networking.

- Expert-level knowledge of Routing protocols (EIGRP, OSPF, BGP) and Switching technologies (STP, VLANs, EtherChannel).

- Strong experience with Cisco Catalyst and Juniper networking platforms.

- Understanding of Zscaler solutions (ZPA / ZIA).

- Good understanding of DNS/DHCP/IPAM.

- Hands-on experience with FortiGate Firewalls and Juniper SRX Firewalls.

- Proven expertise in DMVPN configuration and troubleshooting.

- Good understanding of WAN architecture and technologies.

- Solid understanding of SD-WAN architectures and deployment strategies.

- Experience with Cisco Wireless LAN Controllers (WLCs) and Access Points.

- Familiarity with network monitoring tools and Telemetry (SNMP, NetFlow etc).

- Strong analytical and problem-solving skills.

- Excellent communication and documentation abilities.

- Proud to share LSEG in the India is Great Place to Work certified (Jun 25 Jun 26).

- Learn more about life and purpose of our company directly from India colleagues video: Bengaluru, India | Where We Work | LSEG.