Prerna Joshi

Senior Software Engineer

Bengaluru, Karnataka, India7 yrs 1 mo experience

Highly Stable

Key Highlights

6+ years of experience in backend engineering.
Expertise in Java, AWS, and Microservices.
Proven track record in optimizing cloud services.

Stackforce AI infers this person is a Backend Engineer specializing in Cloud Computing and Automation.

Contact

Skills

Core Skills

JavaAwsAutomationCloud-native Systems

Other Skills

API TestingAPIsAWS AthenaBig DataCC++CDKCI/CDCascading Style Sheets (CSS)CucumberData StructuresDatabase Management System (DBMS)DockerEngineeringGit

About

I’m a Backend Engineer with 6+ years of experience building scalable and distributed systems. Currently at Amazon (AWS Athena Capacity Management team), I focus on designing and developing backend services that optimize performance, reliability, and scalability across large-scale cloud workloads. My core expertise lies in Java, Spring Boot, Microservices, AWS, SQL/NoSQL, Redis, and Kafka, with hands-on experience in system design, distributed systems, and automation. Previously at VMware, I worked on backend product development and automation frameworks, strengthening my foundation in cloud-native systems. Passionate about solving complex engineering problems and scaling cloud services, I’m eager to bring my skills to impactful backend engineering roles. Always open to connecting with recruiters, hiring managers, and peers in the tech community.

Experience

7 yrs 1 mo

Total Experience

3 yrs 3 mos

Average Tenure

6 mos

Current Experience

Walmart global tech india

Senior Software Engineer

Dec 2025 – Present · 6 mos · Bangalore Urban, Karnataka, India

Amazon

Software Engineer

Nov 2022 – Sep 2025 · 2 yrs 10 mos · Bengaluru, Karnataka, India · On-site

Contributed to the capacity management and provisioning system for AWS Athena, a serverless SQL engine, ensuring reliable query execution for customers at scale.
Supported the launch of Athena in multiple AWS commercial regions, collaborating with cross-team stakeholders to enable service availability for new customers.
Improved asset readiness time by building automation with custom AMIs, reducing EC2 asset setup by ~20%.
Designed and implemented region build automation using Java and internal tools, reducing setup timelines from ~90 days to ~15 days and minimizing manual effort.
Helped re-architect the metering service to improve fault tolerance and reduce risks of failure during high load or DoS-like scenarios.
Developed benchmarking tools with Python and AWS CLI for performance analysis on new compute backends, helping identify query inefficiencies and optimize execution speed by ~20%.
Built and enhanced APIs for the Worker Manager service to better allocate compute resources, improving query startup latency by ~30–35%.
Participated in system load testing, debugging, and operational readiness, contributing to ~30% performance improvements in compute resource handling.
Actively took part in the on-call rotation, handling customer escalations and production issues to ensure high availability of the service.
Mentored new hires and interns, helping them onboard to the team’s architecture, tooling, and development practices.

JavaAWS AthenaAutomationJava DevelopmentMicroservicesSQL+3

Vmware

3 roles

Member Of Technical Staff - 2

Promoted

May 2021 – Nov 2022 · 1 yr 6 mos

Worked with Horizon Cloud Connector team.
Created automation framework to test the E2E functionality of the product
Automated around 300+ test cases for both API and UI along with the one click release process
Managed CI/CD pipelines using groovy scripts and Jenkins
Managed infrastructure used for automation with the help of VMware vSphere
Release manager for 4 Cloud Connector releases
Worked on different features to enhance customer debugability, troubleshooting, and enhancing security for the product.
Contributed to the critical feature - Auto upgrade for Cloud Connector
Received "Cross Team Excellence Award" in FY22Q3 for working on Dashboards related to security scans for cross BU teams

AutomationCI/CDJenkinsGroovyAPI TestingCloud-native Systems

Member Of Technical Staff

Jul 2019 – May 2021 · 1 yr 10 mos

Works for Horizon Cloud Connector team. Day to Day responsibilities mainly include creating automation flows to test end to end the flow of the entire product.