Pallav Kalal

Senior Backend Engineer

Bengaluru, IN.

About

Senior Backend Engineer with 5.8+ years experience building payment systems and distributed architectures. Expertise in Java/Spring Boot microservices handling high-volume transactions (10M+ daily). Focused on system reliability (99.95% uptime), query optimization, and cost-efficient cloud solutions.

Work

Verse Innovation

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Senior Software Engineer

Summary

Developed payment platform processing 10M+ daily transactions (Java/Spring Boot) with 99.95% uptime

Highlights

Optimized Elasticsearch performance by:

Replacing nested queries with filter contexts

Implementing index partitioning

(reduced avg latency from 120ms to 85ms)

Migrated SNS and lambda services from AWS to GCP, saving infrastructure costs

Airtel Digital

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Senior Software Engineer

Highlights

Improved order processing system latency by 15% through:

Redis cache implementation

JVM tuning for Java 11

Designed coordinate-based task allocation reducing field dispatch time by 12%

Oracle

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Applications Engineer

Highlights

Reduced HR SaaS bugs by 12% through SQL query optimization (query plan analysis)

Tata Consultancy Services

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Systems Engineer

Highlights

Developed tax processing modules handling 10K+ requests per second (Java 8, Spring)

Optimized database operations through stored procedures (20% faster processing)

Implemented Excel data upload system with VBA macros for bulk operations

Education

Rajasthan Technical University

B.Tech Computer Science

Skills

Languages

Java, Go, SQL.

Frameworks

Spring Boot, Spring Cloud, Kafka, Kubernetes.

Databases

PostgreSQL (query optimization), MongoDB, Redis.

Cloud

AWS (Lambda, Kinesis), GCP (GKE), Docker.

Architecture

Event-driven systems, Idempotent APIs, Circuit Breakers, Concurrency, Multithreading.

Projects

Josh Wallet Payment System

Summary

Architecture: Spring Boot microservices with Kafka event streaming