Meet the Team
The Cisco cnBNG Control Plane team builds Cisco's cloud-native Broadband Network Gateway - the carrier-grade subscriber-management brain that runs as microservices on the SMI (Subscriber Microservices Infrastructure) / Kubernetes platform and interworks with IOS-XR, Silicon One-based User Plane Functions (UPFs). We power some of the world's largest residential and business broadband deployments, serving millions of subscribers with strict availability and scale requirements.

We value technical depth, automation-first engineering, continuous learning, team-oriented problem-solving, and responsible adoption of AI-assisted development practices.

Your Impact
As a Software Engineer on the cnBNG Control Plane, you will own the design, delivery, and end-to-end quality of carrier-grade subscriber-management features in a cloud-native architecture. You will build session-handling, CP-UP separation, redundancy, and scale capabilities that keep millions of subscribers online across Silicon One-based UPFs - and own their unit, integration, system,



and scale validation with automation-first practices. You will mentor junior engineers and use modern AI-assisted tools to accelerate development, testing, and debugging.

What You Will Do
Design, develop, and maintain cnBNG Control Plane microservices (C/C++/Go) on the SMI/Kubernetes platform, interworking with IOS-XR / Silicon One-based User Plane Functions.
Implement and enhance subscriber-management functionality: PPPoE/IPoE session bring-up, DHCPv4/DHCPv6 (server/proxy/relay), Prefix Delegation, RADIUS/AAA, PAP/CHAP, accounting, Change of Authorization, IPAM, subscriber policy, and QoS.
Develop and harden CP-UP separation over the State Control Interface - session programming, state download/replay, and reconciliation between the Control Plane and Silicon One UPFs.
Build features for scale and high availability: cluster upscale, N:M and geo/warm redundancy (SRG), CP-GR switchover, and subscriber-session continuity

📌 Software Engineer (Bengaluru)
🏢 Cisco
📍 Bengaluru