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Manjunath Yadav S

@manjunathyadavs

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Java Full Stack Engineer building microservices, AI apps, and data platforms.

India

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What I'm looking for

I’m looking to build Java microservices and AI-powered features end-to-end—optimizing performance, integrating systems securely, and shipping with GitOps CI/CD in a team that values testing and ownership.

I’m a Java Full Stack Engineer with 4+ years of experience delivering high-performance microservices, enterprise integrations, AI-powered applications, and large-scale data processing systems. At Omnicom Media Group (Flywheel Digital), I re-architected automated case creation workflows by replacing Redshift stored procedures with a distributed Java-based platform.

I achieved 200× higher deduplication throughput by using SHA-256 hashing and Redis-backed caching, while also eliminating Redshift compute costs and enabling unit testing (0→85% coverage). I also built an AI-powered support assistant using Spring AI and Ollama, giving support teams natural-language querying of case data and automated ASIN updates through chat commands mapped to REST endpoints.

Previously at Dassault Systèmes, I reduced backend API latency by 83%, designed SCM-to-GitHub integration and CI/CD automation, and led modernization from legacy Jakarta EE/Polymer to Spring Boot and React—improving performance, maintainability, and developer productivity. I’m the kind of engineer who cares about end-to-end delivery: secure integrations (including Py4J real-time streaming), strong testing with JUnit/Mockito, and GitOps CI/CD with GitHub Actions and ArgoCD.

Experience

Work history, roles, and key accomplishments

Current

Java Full Stack Engineer

Current

Omnicom Media Group (Flywheel Digital)

Oct 2025 - Present (9 months)

Re-engineered automated case creation by migrating business logic from Redshift stored procedures to a Spring event-driven platform, adding SHA-256 deduplication with Redis caching to achieve 200x higher throughput. Built an AI-powered chat agent using Spring AI and Ollama, and set up GitOps CI/CD using GitHub Actions, Docker, AWS ECR, ArgoCD, Datadog APM, and Kubernetes.

Spring Cloud SHA 256 Redis MySQL React GitHub Actions Docker AWS ECR ArgoCD Datadog MDC Tracing Kubernetes REST SQL

Java Full Stack Engineer

Dassault Systèmes

May 2022 - Oct 2025 (3 years 5 months)

Refactored legacy Jakarta EE REST services into modular services, and migrated Process Composer UI from Polymer to React.js to improve maintainability and UX. Optimized document upload APIs using multithreaded processing (35s to 6s, 83% latency reduction), and built a secure cross-language integration layer using Py4J for real-time log streaming between Java and Python components.