Senior Network Engineer

About the Role

We are seeking a skilled and experienced Senior Network Engineer to join our team. The ideal candidate will have 5+ years of hands-on experience in managing and supporting enterprise network infrastructure, with strong expertise in routing, switching, firewalls, VPNs, and network security protocols. This role involves designing, implementing, and maintaining complex networks, ensuring high availability, performance, and security for business-critical systems. Experience with protocols like BGP, OSPF, and technologies such as load balancing and network monitoring tools is essential. Juniper Hardware experience is a must-have. Cisco Routing Switching and Troubleshooting Experience. Relevant certifications such as CCNP, NSE, PCNSE, or JNCIA are preferred.

What You'll Do:

• Manage IP connectivity and latency for all data center networks.

• Configure BGP transit and private peering.

• Need to work with the Architect team on plans for various networking solutions.

• Manage and perform WAN installations.

• Manage network performance improvements and enhancements.

• Monitor and scale network bandwidth as needed.

• Implement future PubMatic service data centers (domestic or International)

• Plan and execute complex network upgrades and migration activities.

• Manage all aspects of network security (load balancers, firewalls, router ACLs)

• Manage Remote Access for PubMatic users and clients.

• Perform network hardware/software maintenance.

• Proactively plan for scale and infrastructure growth.

• Research new tools and network technologies.

• Update/standardize device firmware as needed.

• Manage service requests and support tickets.

• Travel to data centers occasionally.

• On-call after hours and emergency support as needed.

• Manage vendor support issues and engagements.

• Deliver projects within an aggressive timeframe and under pressure.

• Communicate and document infrastructure changes and enhancements.

We'd Love for You to Have:

• Five plus years of experience with Juniper Enterprise Routers and Switches.

• Five Plus years of Hands on experience with Cisco nexus 5k,7k,9k Switches.

• Five plus years with routing protocols - BGP, OSPF, VRRP, and traffic engineering.

• Five plus years with network-based ACL’s, policy-based routing, and firewall management.

• Five plus years of experience with NAT, VLANs, VLAN tagging, MAC address tables, and switching.

• Ability to generate and maintain technical documentation and network diagrams.

• Experience with VXLAN, Virtual-Chassis, and MC-LAG on Juniper gear using best practices and implementing the appropriate spanning tree protocols on TORs in such environments.

• Experience working with carrier circuits (installation, activation & troubleshooting).

• Experience working on Palo Alto Firewall and Fortinet firewalls. Experience with IPSec VPN, MFA for VPN access.

• Experience working in a DevOps environment and using network automation tools such as Ansible, Git, and Python.

• Experience in troubleshooting complex network issues.

• Experience contributing to monitoring and alerting systems.

• JNCIE/CCIE or equivalent experience with Juniper, Cisco, and Arista platforms.

• CCNA, CCNP Data center Equivalent certifications must be added advantage.

• CISSP/ Knowledge of network security, including IDS, DDoS, and other distributed attacks.

• IPv6 experience and knowledge.

• Operational experience with flow-based technologies.

• UNIX/Linux OS Networking knowledge.

AI / ML Proficiency – Added Advantage

• Familiarity with AIOps platforms (e.g., Moogsoft, Splunk, Juniper Apstra, Cisco DNA Center AI, Palo Alto AIOps).

• Understanding of how AI/ML can be applied in network operations for anomaly detection, log analysis, and performance optimization.

• Exposure to automated firewall rule analysis and threat intelligence enrichment using AI-based tools.

• Ability to leverage AI-driven monitoring for predictive maintenance, capacity planning, and fault detection.

• Knowledge of data analysis with Python (pandas, scikit-learn) or AI-based log/event correlation

• Familiarity with AI-assisted automation frameworks (e.g., Ansible + AI plugins, Terraform with AIOps integration).

• Awareness of Generative AI use cases in networking (e.g., AI-driven documentation, config generation,and troubleshooting assistants).

• Candidates with an interest in exploring Generative AI for network automation, documentation, and troubleshooting will be preferred. Familiarity with AI-driven tools and AIOps platforms is an added advantage.

Qualification:
Should have a bachelor’s degree in engineering or an equivalent degree from a well-known institute/university

Additional Information:

Return to Office: PubMatic employees throughout the globe have returned to our offices via a hybrid work schedule (3 days “in office” and 2 days “working remotely”) that is intended to maximize collaboration, innovation, and productivity among teams and across functions.

Benefits: Our benefits package includes the best of what leading organizations provide, such as paternity/maternity leave, healthcare insurance, broadband reimbursement. As well, when we’re back in the office, we all benefit from a kitchen loaded with healthy snacks and drinks and catered lunches and much more!.

Diversity and Inclusion: PubMatic is proud to be an equal opportunity employer; we don’t just value diversity, we promote and celebrate it. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status

About PubMatic

PubMatic is one of the world’s leading scaled digital advertising platforms, offering more transparent advertising solutions to publishers, media buyers, commerce companies and data owners, allowing them to harness the power and potential of the open internet to drive better business outcomes.

Founded in 2006 with the vision that data-driven decisioning would be the future of digital advertising, we enable content creators to run a more profitable advertising business, which in turn allows them to invest back into the multi-screen and multi-format content that consumers demand.