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IVennapusa Charan

@ivennapusacharan

Message

Backend engineer building high-throughput Java microservices with GCP and Kafka.

India

Message

What I'm looking for

I’m looking for an Agile team where I can own end-to-end delivery of reliable, observable Java/Spring Boot microservices on GCP—designing scalable APIs with Kafka and improving performance through clean architecture and strong monitoring.

I’m a Backend Engineer with 4.5 years building high-throughput distributed systems and microservices in Java and Spring Boot, with hands-on experience designing scalable API architectures. I deliver production-grade services on GCP with a strong focus on reliability, observability, and clean, maintainable system design.

In my current role, I delivered an automated database schema migration system across SQL, PostgreSQL, BigQuery, and Elasticsearch, using distributed locking, resumable workflows, audit logging, and integration with GCP Pub/Sub, Cloud Tasks, and CI/CD for multi-database synchronization. I also designed cloud-native RESTful microservices on GCP (Java, Spring Boot, Docker, Kubernetes, Kafka) and optimized API and list screen performance by ~60%, reducing load time from ~2.5s to ~0.8s.

Earlier, I built secure Java/Jersey backend services for a SaaS low-code platform with OAuth 2.0, JWT authentication, and RBAC/ACL-based authorization. I modernized legacy backends by migrating ~170 services, upgraded Java 8 to Java 11, wrote unit/integration tests with JUnit and Mockito following TDD, and I hold a Google Cloud “Professional Cloud Developer” certification (2025).

Experience

Work history, roles, and key accomplishments

Current

Product Engineer 2

Current

Rappit

Feb 2025 - Present (1 year 5 months)

Delivered a multi-database automated schema migration system across PostgreSQL, BigQuery, and Elasticsearch, integrating GCP Pub/Sub, Cloud Tasks, and CI/CD. Designed cloud-native GCP REST microservices using Java/Spring Boot with Docker, Kubernetes, and Kafka, and improved API/list performance by ~60%.

Software Engineer 2

Rappit

Jan 2024 - Jan 2025 (1 year)

Developed secure Java/Jersey backend services for a SaaS low-code platform implementing OAuth 2.0, JWT, and RBAC/ACL authorization. Optimized Solr batch indexing and built integration services including webhook handling and workflow orchestration, supporting reliable delivery with JUnit/Mockito and TDD practices.

Java Jersey Backend Services OAuth 2.0 JWT RBAC ACLs Solr Background Jobs Webhooks Workflow Orchestration Junit Mockito TDD Agile Scrum

Associate Software Engineer

Rappit

Jun 2022 - Dec 2023 (1 year 6 months)

Modernized legacy backend systems by migrating ~170 services and refactoring Java/Jersey REST APIs and service orchestration flows to reduce operational complexity. Led Java 8 to Java 11 upgrades and implemented JWT-based authentication filtering with token validation and secure access control across endpoints.

Java Jersey REST APIs API Orchestration Migration Java 8 Java 8 11 JWT Authentication Access Control

Software Intern

Rappit

Feb 2022 - May 2022 (3 months)

Built an enterprise full-stack web application with a Spring Boot backend and Angular UI, implementing RESTful APIs with an OData-style resource design and complete CRUD operations backed by MySQL. Delivered responsive, cross-browser compatible interfaces.