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Shekhar Kumar

@shekharkumar1

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Senior Software Engineer at Info Edge (AmbitionBox) who cut cache-refresh API timeouts by approximately 93%.

India

Message

At Info Edge (AmbitionBox), I resolved approximately 200 daily cache-refresh API timeouts by addressing thread-pool exhaustion and introducing batched jobId-based bulk APIs, cutting timeouts by approximately 93%.

I also re-engineered employee-benefit extraction with rule-based NLP using OpenNLP, adding synonym and negation handling to improve extraction by approximately 40% across 12K–15K daily reviews.

At Paytm Money Limited, I developed backend systems for fund-transfer retries and transaction recovery using Redis and Amazon SQS. I also built a Kafka-driven pipeline for bulk mandate failures that resolved incorrect SIP linkage for 100K+ dormant mandates.

My projects include a full-stack fitness platform and a YOLOv8-based vehicle detection system. For the ANPR project, I evaluated EasyOCR, KerasOCR, and Pytesseract, achieving 97% vehicle-detection accuracy and 89% OCR accuracy.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Info Edge (AmbitionBox)

May 2026 - Present (5 months)

Resolved ~200 daily timeouts in a cache-refresh API by identifying thread-pool exhaustion and introducing batched jobId-based bulk APIs, cutting timeouts by ~93%. Re-engineered employee-benefit extraction from string matching to rule-based NLP with OpenNLP, improving extraction by ~40% across 12K–15K daily reviews.

Java OpenNLP NLP API Optimization Thread Pooling Query Tuning Elasticsearch Read Replicas Database Optimization

Software Engineer - Backend

Paytm Money Limited

Jun 2025 - Apr 2026 (10 months)

Implemented retry flow via Amazon SQS with configurable delay intervals using Redis to recover 404 failures in Omne's fund transfer API, ensuring 100% update reliability. Developed a Kafka-driven asynchronous system for bulk mandate failures via CSV-based APIs, resolving incorrect SIP linkage for 100K+ dormant mandates.

Java Spring Boot Kafka AWS SQS Redis Kubernetes REST APIs Database Optimization Idempotency Cron Job

Software Engineering Intern - Backend

Paytm Money Limited

Jan 2025 - May 2025 (4 months)

Built a scalable payment flow with controlled user rollout, processing ~10K monthly transactions and leveraging Redis-based dynamic MID routing per transaction. Handled a 100–150 TPS traffic increase by designing an asynchronous, Kafka-driven pipeline to deliver Pre-Debit and Debit Notifications for ~80K daily SIPs.