Karan Kumar

About Karan Kumar

Seasoned technology leader and DevOps/SRE Architect with 17+ years of experience driving…

Experience

1. Site Reliability Engineer, Sme of Saas Products

   Cisco

   Sep 2021 — Present · Hyderabad, IN

   Key Responsibilities:• Led reliability initiatives ensuring 99.99 Percent uptime through proactive monitoring, automated alerting, and incident response.• Acted as SME and escalation point for critical incidents, driving RCA and long-term reliability improvements.• Streamlined change management by validating rollback strategies in CAB reviews, reducing failures.• Mentored junior engineers, creating runbooks and knowledge repositories to cut onboarding time.• Collaborated with dev, infra, and security teams to enable smooth migrations, enhancing scalability and resilience.Key Projects & Achievements:Cloud Cost Optimization & Automation• Cut AWS costs by 25 Percent via removal of unused storage (RDS, Redshift, S3, EFS) and EC2 right-sizing.• Built an EFS audit tool to analyse folder sizes, file counts, and aging files (GT 90 days), enabling safe cleanup and saving USD Automated log management by moving EFS logs Greater than 3 days to S3, improving storage efficiency.• Developed Python-based Lambda functions for cost monitoring, visualized 90-day trends in Grafana, and set alerts for Greater than 1 Percent cost variance.Monitoring, Dashboards & Alerting• Built Grafana dashboards integrating Kafka, Druid, CloudWatch, and Athena for real-time visibility into traffic and performance.• Developed KPI dashboards with S3 + Grafana to track millisecond-level delays, processing queues, and ALB requests.• Configured query-based alerts for RDS, Redshift, and Athena, cutting repeated alerts by 72 Percent in one quarter.• Automated YAML comparison reports and QA TPS usage tracking, improving audit accuracy and capacity planning.Database & Platform Engineering• Optimized Redshift via query tuning, column encoding, and manual vacuum to reduce disk usage.• Executed zero-downtime migration of MongoDB to Atlas in collaboration with DBA team.• Improved Kubernetes reliability by implementing liveness and readiness probes for stronger fault tolerance

Education

• SES SN Murthy Polytechnic College

  Bachelor's degree, Computer Science

  2000 — 2003

• Aurora Engineering college

  Bachelor's Degree, Computer Science

  2003 — 2006

Skills

• Team Management
• Start-Ups
• Project Management
• Vas
• Unix
• Operations Management
• Entrepreneurship
• Sql
• Project Planning
• Oracle
• Management
• Data Warehousing
• Service Delivery