Sumit Kumar

About Sumit Kumar

14+ years of experience in design, development, DevOps and performance engineering for large scale enterprise applications.Performance Engineering• Experienced in maximizing large scale enterprise application performance, scalability and reliability using Performance Engineering methodologies. • Experienced in benchmarking, load modeling, capacity planning, testing, and tuning the application performance.• Experienced in executing various performance tests (Load, Stress, Endurance, Failover) using automated testing methodologies. Implemented CI/CD. • Excellent experience in debugging web application performance/scalability issues and tuning configuration and code for better response time and resource management.• Excellent experience in identifying performance bottlenecks and providing the fix, code profiling, JVM and app server tuning. Additionally, competent in Frontend, Network, and backend database performance tuning.• Full Life Cycle Performance engineering from Requirements to Release and maintenance in production. • Experience in setting up and executing an enterprise-wide Performance Center of Excellence• DB SQL performance tuning with hands on experience in analyzing TKPROF, Raw Trace, ASH, AWR, OEM.• Good hands-on experience with explain plan analysis & SQL rewriting.• Observability and monitoring framework building using open-source tool libraries and promotion) • Good Hands-on experience on ELK Stack (Setup & maintenance) with filebeats & fluentD, Kubernetes, Docker, Prometheus, Grafana.• Experienced in tuning Spring Boot Microservices, Kubernetes/docker. Also, tuning the applications to reduce the resource footprint to save shared cloud (OCI) resources. • Troubleshooting production performance issues and outages to minimize business impact. Software Development• Full Life Cycle Software Development from Requirements and Design to Implementation and Release.• Experienced in designing and development

Experience

1. Consulting Member of Technical Staff - Performance Engineering

   Oracle

   Mar 2017 — Present · Redwood City, CA, US

   Benchmarking and Performance Evaluation, Application/JVM/DB tuning for enhanced performance, Chaos Engineering, Bottleneck identification and Fix/recommendation, Capacity Analysis and planning, replicating production performance issues and providing fixes, APM tools evaluation, Database SQL tuning, Setting up Instrumentation and mentoring the team, Code Profiling, Designing & Executing load Tests, Oracle DB Diagnostics data/report (AWR, ASH, Trace) Analysis, Setting and maintaining the ELK stack, Setting up and maintaining the Perf test env. Troubleshooting production issues and outages etc.•Was quite instrumental in migrating our org applications to the OCI which involves first coming to k8 on premise & the moving to OCI OKE. Had been assessing and tuning the performance, doing capacity analysis, and identifying the best configurations and capacity for the Microservices. •DevOps- Creation of monitoring framework using Prometheus, Grafana, open tracing libraries. Exposing health and application metrics for monitoring. Jenkins integration for auto promotion.

Education

• Birla Institute of Technology, Mesra

  Master of Computer Applications - MCA, Computer Science

  2004 — 2007

• St. Xavier's College

  Bachelor of Science (BSc), Computer Science

  2000 — 2003

Skills

• Jdbc
• Performance Tuning
• Jmeter
• Javascript
• Weblogic
• Javaserver Pages (Jsp)
• Opnet
• Jsp
• Performance Engineering
• Xml
• Unix
• Dynatrace
• Oracle Database Performance Tuning
• Shell Scripting
• Pl/Sql
• Capacity Planning
• Oracle
• Requirements Analysis
• Software Development Life Cycle (Sdlc)
• Jvm
• Servlets
• Java
• Sql
• Hibernate
• Application Performance Management