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Backend engineer with 4+ years of experience building scalable Java-based systems across e-commerce and fintech, specializing in Spring Boot microservices and distributed transaction workflows. Experienced with Kafka event-driven architectures, API performance tuning, database optimization, and AWS deployments in high-trust financial environments.…

Chaitanya Pellakuru

Back-End Developer, Programmer, Web Developer, +2

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Backend engineer with 4+ years of experience building scalable Java-based systems across e-commerce and fintech, specializing in Spring Boot microservices and distributed transaction workflows. Experienced with Kafka event-driven architectures, API performance tuning, database optimization, and AWS deployments in high-trust financial environments.…

Available to hire

Backend engineer with 4+ years of experience building scalable Java-based systems across e-commerce and fintech, specializing in Spring Boot microservices and distributed transaction workflows.
Experienced with Kafka event-driven architectures, API performance tuning, database optimization, and AWS deployments in high-trust financial environments.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Beginner

Language

Javanese

Fluent

English

Advanced

Work Experience

Software Engineer (Backend) at Affirm

January 1, 2025 - Present

Designed and maintained Spring Boot microservices for loan lifecycle and payment processing. Improved API response time by optimizing request flows and service orchestration logic. Migrated a Python-based service module to Kotlin/Java microservices to reduce dependencies and improve maintainability. Built and enhanced BNPL checkout REST APIs with idempotency, validation, and retry mechanisms, improving transaction success rate. Tuned Aurora MySQL queries and indexing for transaction-heavy datasets to improve reconciliation and ledger update performance. Contributed to Kafka-based event-driven payment status updates to improve consistency and reliability across distributed services.

Java Developer Intern at Apex Fintech Solutions

March 1, 2023 - December 1, 2023

Enhanced Spring Boot microservices for transaction and account workflows, improving API response times via query tuning, connection pooling, and optimized request handling. Developed secure REST APIs using Spring Security with JWT-based authentication and role-based access control aligned to compliance/audit needs. Optimized PostgreSQL queries and indexing for transaction-heavy tables to reduce reconciliation latency. Worked on Kafka-based asynchronous pipelines for payment status updates and notifications to enable decoupled, reliable processing. Supported Docker-based containerization and contributed to CI/CD pipelines using Jenkins and AWS deployments.

Software Engineer (Backend) at HealthKart

November 1, 2019 - December 1, 2021

Built Spring Boot backend services for wellness product and user activity workflows, improving throughput during high-traffic periods through optimized request handling and service interactions. Designed REST APIs using Spring MVC and Hibernate for third-party platform integration, improving data exchange reliability and reducing latency for frequently accessed endpoints. Implemented JWT authentication and RBAC for secure user data and GDPR-aligned protection. Optimized PostgreSQL queries and indexing for user and transaction datasets to improve high-frequency access patterns. Developed Kafka pipelines for real-time user activity and notifications to enable asynchronous workflows. Deployed and managed containerized applications on AWS EC2 and RDS with Docker, collaborating with DevOps to improve deployment consistency and availability.