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Aalok Kumar

@aalokkumar

Senior Software Engineer with ~7 years of experience in backend systems, system design, microservices, and end-to-end technical ownership.

India

Message

At Rakuten India, I owned the design and delivery of a Java and Quarkus-based Voucher & Gift Card platform, including external payment integrations and production releases. I used Hexagonal Architecture to isolate business logic and testing, and optimized transaction processing to reduce latency by approximately 17%.

At Hexaware Technologies, I designed Kafka workflows for insurance policy changes and led a migration of 7M+ policy records to PostgreSQL. Earlier, I developed backend systems for Organic Kitchen’s e-commerce platform and WeddingsOnly’s vendor discovery and booking services, including QR-based product traceability and Elasticsearch-powered search.

Experience

Work history, roles, and key accomplishments

Current

Sr. Software Engineer II

Current

Rakuten India

Apr 2026 - Present (6 months)

Owned end-to-end design and delivery of a Java and Quarkus-based Voucher & Gift Card platform, driving system design and external integrations. Applied Hexagonal Architecture and optimized transaction processing, reducing latency by approximately 17%.

Java Quarkus System Design Hexagonal Architecture Payment Systems Barcode MPOS Performance Optimization Go Kubernetes AWS

Sr. Software Engineer

Hexaware Technologies

May 2024 - Mar 2026 (1 year 10 months)

Designed Kafka-based workflows for policy renewals, cancellations, pro-rata billing, and refunds, reducing manual reconciliation by ~80% and cancellation processing time by ~65%. Led migration of 7M+ insurance policy records from Salesforce to PostgreSQL using AWS Glue and PySpark.

Kafka AWS Glue PySpark PostgreSQL Salesforce Data Migration Event Driven Architecture Financial Services API Integration Cloud Infrastructure Python

Software Engineer

Organic Kitchen

Mar 2021 - Apr 2024 (3 years 1 month)

Owned end-to-end backend development for an e-commerce platform, improving throughput by ~40%. Designed order and payment orchestration workflows and implemented CI/CD pipelines and containerized deployments.

Java Spring Boot Ecommerce Payment Orchestration CI CD Docker Kubernetes AWS Monitoring Logging

Backend Developer

WeddingsOnly

Jan 2020 - Feb 2021 (1 year 1 month)

Designed and developed core backend APIs for vendor discovery, customer management, and event bookings. Built a real-time chat and notification service using Node.js and Socket.IO, and engineered Elasticsearch-powered vendor discovery.

NodeJS Socket.IO Elasticsearch REST APIs Real Time Communications Search Optimization