Meet the Team
We are the Webex Persistence Team within the Webex Service Engineering & SRE organization.
Our team designs, builds, and operates highly scalable persistence services powering Webex Teams, Webex Meetings, and the broader Webex Suite. We work across Webex Data Centers and AWS Cloud environments, ensuring high availability, reliability, and performance at a global scale.
As part of this team, you will work on mission-critical infrastructure and platform systems, including data, streaming, and persistence layers, with a strong focus on automation, scalability, and cloud-native engineering.
Your Impact
As a Senior Cassandra / DevOps Engineer, you will play a critical role in designing, operating, and optimizing large-scale Cassandra supporting Webex services.
You will help build resilient, high-performance systems and drive engineering excellence in database and infrastructure operations.
- Design, implement, and manage large-scale Apache Cassandra clusters in production
- Optimize performance, troubleshoot issues, and ensure high availability of distributed systems
- Architect and deploy Cassandra solutions on AWS (EC2, EKS, managed services) and OCP environments.
- Perform capacity planning, cluster sizing, and performance tuning
- Define data models including partitioning strategies, replication, and consistency levels
- Collaborate with engineering teams to build high-throughput, low-latency data systems
- Drive migration strategies for Cassandra to new versions.
- Establish backup, recovery, and disaster recovery proces ses
- Monitor system health and reliability using tools like Prometheus and Grafana
- Contribute to infrastructure automation using Terraform , Automation by Ansible, and Python.
Minimum Qualifications
- 8+ years of hands-on experience in Apache Cassandra design, administration, and cluster management in production environments
- Strong expertise in Cassandra architecture including data modeling, partitioning, replication strategies, consistency levels, and repair mechanisms
- Proven experience in performance tuning, troubleshooting, and designing highly available distributed systems
- Experience deploying and operating Cassandra on cloud platforms such as AWS (EC2, EKS, VPC, S3, IAM, CloudWatch) , OCP
- Proficiency in Cassandra Query Language (CQL) and programming in Java or Python, along with experience using Cassandra drivers
- Experience with infrastructure automation and DevOps practices, including CI/CD tools (Jenkins, GitHub Actions, GitLab CI) and Infrastructure as Code tools (Terraform, Ansible), Python
Preferred Qualifications
- Experience working with relational and search databases such as PostgreSQL, OpenSearch, or Elasticsearch
- Hands-on experience with containerization and orchestration technologies such as Docker and Kubernetes
- Exposure to modern data platforms, including data pipelines, streaming systems, or AI/ML and GenAI workloads
Why Cisco?
At Cisco, we’re revolutionizing how data and infrastructure connect and protect organizations in the AI era – and beyond. We’ve been innovating fearlessly for 40 years to create solutions that power how humans and technology work together across the physical and digital worlds. These solutions provide customers with unparalleled security, visibility, and insights across the entire digital footprint.
Fueled by the depth and breadth of our technology, we experiment and create meaningful solutions. Add to that our worldwide network of doers and experts, and you’ll see that the opportunities to grow and build are limitless. We work as a team, collaborating with empathy to make really big things happen on a global scale. Because our solutions are everywhere, our impact is everywhere.
We are Cisco, and our power starts with you.
