# Senior Engineer - Cisco Optical Network Controller (CONC)

**Company**: Cisco
**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_2026383?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/jobs/job_5b2c274e-d58

## Description

The Cisco Optical Network Controller (CONC) team leads the industry in optical SDN controller solutions, powering mission-critical tier-1 service provider networks globally.

As a Senior Engineer on this team, you will drive both architectural excellence in Java microservices and automated validation frameworks in Python.

**Your Impact**

- Technical Design & Architecture: Lead the design and implementation of complex, resilient Java microservices for topology discovery, service provisioning, circuit path computation, and lifecycle management.

- Dev-Test Architecture & Strategy: Architect scalable, reusable Python test automation frameworks; mentor engineers on writing robust end-to-end tests for distributed edge cases.

- Performance & Scale Optimization: Profile, troubleshoot, and optimize microservice performance, concurrency, and memory footprint in containerized Kubernetes clusters.

- Code Quality & Mentorship: Drive rigorous code reviews, test-driven development (TDD), automated regression guardrails, and technical onboarding for junior engineers.

- Release & Customer Quality: Partner with Product Leads and Architects to ensure carrier-grade reliability and rapid turnaround on critical customer escalations.

**Minimum Qualification**

- Education & Experience: Bachelor's or Master's in CS/ECE/EE with 4 to 9 years of progressive experience designing and developing distributed enterprise or networking software.

- Advanced Java Mastery: Deep expertise in Java (Spring Boot / Micronaut), concurrency/multithreading, distributed data caching, transactional consistency, and REST/gRPC API design.

- Python Test Engineering Expertise: Extensive experience designing modular, automated Python test frameworks (PyTest, Robot Framework, mock servers) to simulate large-scale network topologies and microservice interlocks.

- Cloud-Native & Distributed Systems: Strong experience with Kubernetes, Docker, Kafka, distributed state management, and Linux systems internals.

**Preferred Qualification**

- Deep domain experience in Optical Networking (ROADM, Transponders, OTN, DWDM), L0-L3 network topologies, or PCE/Path Computation algorithms.

## Skills

### Required
- Java
- Python
- Kubernetes
- Docker
- Kafka
- Linux
- Spring Boot
- Micronaut
- REST
- gRPC
- API design
- Cloud-Native
- Distributed Systems

### Nice to have
- Optical Networking
- ROADM
- Transponders
- OTN
- DWDM
- PCE
- Path Computation algorithms

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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_2026383?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)