Principal Network Engineer

Overview

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

Career Stage:

Manager

London Stock Exchange Group (LSEG) Information:

Join us and be part of a team that values innovation, quality, and continuous improvement. If you're ready to take your career to the next level and make a significant impact, we'd love to hear from you.

LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.

Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.

Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.

We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs.

You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering.

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.

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