Sushant Singh Sonkar
Pune,Maharashtra,
Summary
erformance Testing & Engineering professional with 5+ years of experience in designing and executing performance test strategies for web, API, Kafka-based, and batch processing applications. Proficient in tools like LoadRunner, JMeter, AppDynamics, and skilled in server-side monitoring using Unix and SQL.
Experienced in testing Kafka-to-DB ingestion pipelines and validating ETL/batch jobs for SLA-bound execution. Performed detailed root cause analysis by correlating client-side metrics with server logs, GC behavior, and thread/heap dumps to identify memory leaks and thread contention issues.
Hands-on with API performance testing, custom dashboard creation in AppDynamics, and basic shell scripting for server metric collection.
Experience in performance testing of applications deployed on AWS, including EC2 resource utilization analysis, Auto Scaling Group (ASG) behavior validation, and CloudWatch-based infrastructure monitoring.
Certified in LoadRunner, AppDynamics, ISTQB Performance Testing. Recognized for timely delivery, strong collaboration, and proactive issue identification in Agile-based enterprise projects across the BFSI domain. Experienced in coordinating with cross-functional teams including developers, DBAs, infrastructure, and client stakeholders to ensure performance goals are met.
Overview
5
5
years of professional experience
1
1
Certification
Work History
Quality Analyst
CITI
Pune
12.2023 - Current
- Collaborated with development and business teams to gather and analyze performance-related NFRs.
- Developed parameterized scripts using LoadRunner for efficient Web/HTTP performance testing.
- Designed performance testing scripts for Kafka ingestion with Java Vuser protocol.
- Executed sanity, baseline, stress, and full-scale load testing for multiple releases.
- Monitored server-level KPIs during test execution utilizing AppDynamics for real-time insights.
- Created custom dashboards in AppDynamics to visualize application and job-specific metrics.
- Identified performance bottlenecks and coordinated tuning recommendations with Dev/Infra teams.
- Generated detailed performance test reports with graphs, sharing observations for optimization.
Senior System Engineer
Infosys
11.2020 - 12.2023
Java Developer – Infosys Certified
- Developed backend modules using Java and Hibernate ORM to enable seamless DB integration.
- Followed OOP principles and implemented scalable business logic for enterprise modules.
- Built APIs to support CRUD operations, handled exception management, and integrated with MySQL.
- Built dynamic front-end components using ReactJS, JavaScript, and JSX, working on two client-facing projects.
- Designed and developed dashboards, navigation bars, forms, and reusable UI components.
- Worked closely with clients to gather requirements, ensuring smooth delivery via Agile & Scrum practices.
- Used REST APIs to fetch and render real-time data in React applications.
- Supported the performance testing team for CITI Bank, ensuring timely test execution and reporting.
- Maintained strong client communication, reported status daily, and received client appreciation citation for quality work.
- Assisted with sanity testing, defect triaging, and integration of performance inputs into dev lifecycle.
Education
Bachelors In Engineering - Electronics & Communication Engineering
University Institute Of Engineering & Technology
Chandigarh10-2020
12th -
Jaswant Modern Sr Sec School
Dehradun05.2014
Skills
Performance Testing Tools
LoadRunner, Apache JMeter
Protocols & Scripting
Web HTTP/HTML, Web Services, Java Vuser
Unix Shell Scripting – automation, server stats collection, log analysis
Data Streaming & Messaging
Apache Kafka – Producer/Consumer performance testing
Kafka throughput, latency, consumer lag validation
Kafka-to-Database ingestion and end-to-end data flow testing
Monitoring & Diagnostics
AppDynamics – Custom dashboards for server and application monitoring
Unix – CPU, memory, disk, JVM, GC analysis and log correlation
Database & ETL Testing
SQL – Query performance validation, DB monitoring
ETL Performance Testing – Batch load verification, SLA/time-bound job validation
API Testing
LoadRunner – REST/SOAP API performance testing
JSON/XML payload simulation and response validation
Cloud & Infrastructure (AWS)
EC2 – Instance sizing, CPU/memory/network utilization analysis
Auto Scaling Groups (ASG) – Load-based scale-in/scale-out validation
CloudWatch – Metrics, logs, alarms for performance monitoring and analysis
Process & Collaboration Tools
Agile, SDLC methodologies
JIRA – Sprint planning, defect tracking, performance ticketing
Certification
- ASTQ Certified Foundation level Performance Tester-Certified Tester, Foundation Level Performance Testing (CTFL-PT), 21-CTFL-PT-00058-USA, 2021-08-01,
- Infosys certification for Performance Testing using JMETER
- Certified in Cisco AppDynamics - UDEMY
- Infosys Certification for Performance Testing using LoadRunner
Languages
English, Full Professional Proficiency
Hobbies and Interests
- Singing
- Play Guitar
- Football
- Gaming
Timeline
Quality Analyst
CITI
12.2023 - Current
Senior System Engineer
Infosys
11.2020 - 12.2023
Bachelors In Engineering - Electronics & Communication Engineering
University Institute Of Engineering & Technology
12th -
Jaswant Modern Sr Sec School