# Software Engineer | GO Programming, Cloud-Native, PPPOE/IPOE, Microservices, DHCPV4/DHCPV6 | 8-14 Years

**Company**: Cisco
**Location**: Bangalore, India
**Work arrangement**: hybrid
**Experience**: senior
**Job type**: full-time
**Category**: Engineering
**Industry**: Technology

**Apply**: https://cisco.wd5.myworkdayjobs.com/en-US/Cisco_Careers/job/Bangalore-India/Software-Engineer---GO-Programming--Cloud-Native--PPPOE-IPOE--Microservices--DHCPV4-DHCPV6---8-14-Years_2025245-1?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/jobs/job_c88518ec-b08

## Description

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).

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.

Responsibilities:

- 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 during CP-UP communication failures.

- Own quality end-to-end: write unit tests and component/integration tests; design and execute system, regression, scale, performance, resiliency, and high-availability tests for your features.

- Develop reusable, scalable test automation (Python; pyATS/Genie or equivalent) and integrate it into CI/CD pipelines and regression suites.

- Build and maintain containerized/virtual/cloud-based test environments (Docker, Kubernetes, SMI) and validate subscriber-scale, traffic, failover, upgrade/rollback, process-restart, and subscriber-churn scenarios.

- Optimize control-plane performance, memory, and convergence for millions of subscribers across large UPF fleets.

- Develop and maintain gRPC/REST APIs and YANG/OpenConfig models, plus CLI and model-driven telemetry for configuration and operational visibility.

- Troubleshoot sophisticated, distributed issues across CP, Silicon One UPFs, and the SMI/Kubernetes stack; drive RCA using logs, traces, core dumps, RADIUS transactions, and telemetry.

- Manage code with Git; participate in code reviews; collaborate with Test Engineering on feature, scale, and HA validation.

- Work with architects, DE/DT leads, and PLM to deliver features across the release lifecycle (BC/CC, AC/EC, DEVELOPING, FCS).

- Actively use approved AI coding assistants and engineering agents for code generation, unit/automation test creation, static analysis, log analysis, defect triage, and documentation - validating AI-generated output responsibly.

Minimum Qualifications:

- Bachelor's or master's degree in Computer Science, Electrical/Computer Engineering, Telecommunications, or a related field.

- Experience in systems/embedded or cloud-native software engineering for networking products.

- Strong programming in C/C++ and/or Go on Linux; Python for test automation and scripting.

- Experience writing unit, integration, system, and scale/performance tests, and building automation (pyATS/Genie or equivalent) integrated into CI/CD and regression pipelines.

- Solid understanding of IP networking and subscriber/broadband protocols: PPPoE, IPoE, DHCPv4/v6, RADIUS/AAA, PPP, L2TP.

- Knowledge of Cisco Silicon One (SiOne) NPU-based User Plane Functions (UPFs) - data-plane/forwarding architecture, CP-to-UPF programming, and how subscriber sessions map to NPU forwarding.

- Cloud-native fundamentals: Docker, Kubernetes, microservices, and service meshes.

- Experience building and consuming gRPC/REST APIs and data models (YANG, protobuf).

- Distributed-systems concepts: high availability, redundancy, state reconciliation, and scale.

- Strong Linux skills; experience with Git, code reviews, debugging, and CI/CD pipelines.

- AI-assisted engineering is a must: use of AI coding assistants (e.g., GitHub Copilot) and a working understanding of generative AI, AI agents, MCP (Model Context Protocol), reusable AI skills, prompt/context management, and responsible validation of AI-generated output.

Benefits:

- Opportunities for growth and professional development

- Collaborative and dynamic work environment

- Flexible work arrangements

- Access to cutting-edge technologies and tools

## Skills

### Required
- C/C++
- Go
- Linux
- Python
- Kubernetes
- Docker
- microservices
- cloud-native
- PPPoE
- IPoE
- DHCPv4/v6
- RADIUS/AAA
- gRPC/REST APIs
- YANG/OpenConfig

### Nice to have
- BNG/CUPS
- CP-UP separation
- SRG geo/warm redundancy
- 5G/BNG converged-core architectures
- SMI (Subscriber Microservices Infrastructure)
- Silicon One platform families
- scale/performance characterization
- traffic/subscriber-simulation tools
- databases/caching
- telemetry
- NETCONF/RESTCONF/gNMI
- OpenConfig

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Source: [Apply at cisco.wd5.myworkdayjobs.com](https://cisco.wd5.myworkdayjobs.com/en-US/Cisco_Careers/job/Bangalore-India/Software-Engineer---GO-Programming--Cloud-Native--PPPOE-IPOE--Microservices--DHCPV4-DHCPV6---8-14-Years_2025245-1?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)