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GOPAL KRISHNA

@gopalkrishna

Message

Senior Java backend developer transforming legacy ERP systems into resilient cloud microservices.

India

Message

What I'm looking for

I’m looking for a cloud-first team where I can build Java/Spring microservices, modernize legacy ERP systems, and own low-latency REST/GraphQL integrations—partnering on reliability, clean architecture, and fast, high-signal production incident response.

I’m a Senior Java Backend Developer with over 4.5+ years of hands-on experience building scalable Spring Boot microservices, high-throughput enterprise integrations, and resilient cloud-native ecosystems at Tata Consultancy Services (TCS). I’ve led large-scale legacy-to-microservices migrations using the Strangler Fig pattern, delivering measurable reliability and performance gains.

In my work, I focus on low-latency, production-grade architecture: migrating 60% of a legacy monolith into cloud-native Spring Boot services, cutting real-time data synchronization latency by 93%, and reducing system synchronization times from 30s down to 2s. I also design and optimize relational data layers (SQL/JPQL tuning, schema restructuring, indexing and partitioning) to accelerate batch and transactional processing, and I build secure, high-availability integrations with REST and GraphQL while maintaining strong operational discipline through on-call stability loops.

Experience

Work history, roles, and key accomplishments

Current

Senior Java Developer - Hertz Rentals

Current

Tata Consultancy Services (TCS)

Jan 2021 - Present (5 years 6 months)

Triaged production incidents and supported B2B core integrations under a 15-minute response SLA. Built a billing pipeline with Apache PDFBox for 8,000+ invoices/month and implemented asynchronous notifications and data export flows using Spring Scheduler/AWS SNS and AWS S3.

Java 8 11 Maven Spring MVC Spring Security Spring Cloud PostgreSQL MySQL RESTful APIs GraphQL AWS EC2 AWS S3 Apache Kafka Microservices Docker Kubernetes Mockito Apache PDFBox JAXB AWS Cloudwatch

Backend Developer - Supplier Interactive

Tata Consultancy Services (TCS)

Jan 2023 - Jan 2024 (1 year)

Led the migration of 60% of a legacy ColdFusion monolith into Spring Boot microservices using the Strangler Fig pattern. Built 15+ secured REST APIs, optimized PostgreSQL with composite indexing/partitioning for a 35% performance gain, and reduced supplier data sync lag from 30 seconds to 2 seconds using AWS AppSync GraphQL with improved observability and faster MTTR.

Spring Boot Spring Security GraphQL AWS AppSync PostgreSQL MySQL Indexing Spring Cloud Circuit Breakers Exponential backoff Distributed Transactions Event Sourcing Compensating Transactions Spring MVC AWS Cloudwatch Microservices RESTful APIs

Software Engineer - Element Ordering

Tata Consultancy Services (TCS)

Jan 2021 - Jan 2023 (2 years)

Developed resilient Spring Boot microservices and Feign Client adapters to process 5,000+ daily B2B transactions with external Salesforce CRM endpoints and XML payloads. Improved performance by tuning JPQL schemas and database connection pools (40% query latency reduction) and enhanced reliability through Spring Batch validation pipelines, circuit breakers with exponential backoff, and automated C