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Harsh Arora

@harsharora3

Backend Developer at Cars24 (CarInfo) who improved API reliability and built a distributed rate limiter with Java, Spring Boot, and Redis.

India

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What I'm looking for

I'm seeking a full-time Software Development Engineer role building impactful, high-scale backend systems.

At Cars24 (CarInfo), I designed and optimized REST APIs with Spring Boot for backend services used by thousands of daily users. I improved exception handling across critical endpoints, reducing the failure call rate by 35%.

I also improved MongoDB query efficiency and resolved production incidents by analyzing logs in Kibana and OpenSearch. As a Backend Developer Intern, I refactored Java modules and participated in sprint planning and code reviews.

I built a standalone rate-limiting microservice using sliding window and token bucket algorithms, with Redis for distributed counters. My projects also include a RabbitMQ-based notification engine and an observability dashboard using OpenSearch and Kibana.

Experience

Work history, roles, and key accomplishments

Backend Developer Intern

Cars24

Oct 2025 - May 2026 (7 months)

Designed and optimized production-grade REST APIs using Spring Boot, improving exception handling and reducing failure call rate by 35%. Improved MongoDB query efficiency and debugged production incidents using Kibana and OpenSearch.

Java Spring Boot MongoDB Studio 3T Redis Docker Git Postman OpenSearch Kibana REST APIs Microservices Agile

Technical Support Intern

Sony India Pvt. Ltd.

Jul 2025 - Oct 2025 (3 months)

Diagnosed and resolved complex hardware and software issues for enterprise clients, maintaining a high first-contact resolution rate. Streamlined internal service workflows and issue-tracking processes to improve team efficiency and client satisfaction.

Technical Support Troubleshooting Issue Tracking Workflow Optimization Customer Satisfaction