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Ayyappa Kushalappa

@ayyappakushalappa

Software Development Engineer at Discover Financial Services who improved transaction throughput by 38% and built an AI-powered knowledge retrieval platform.

United States

Message

At Discover Financial Services, I delivered a reusable microservices framework adopted across 12 services and redesigned transaction-processing workflows, increasing peak-hour throughput by 38%.

I also developed an AI-powered knowledge retrieval platform using OpenAI APIs and Retrieval-Augmented Generation, giving users natural-language access to technical documentation, operational procedures, and API specifications.

Previously, at IBM, I designed and delivered more than 40 REST APIs with Java and Spring Boot and created a shared React.js component library that reduced front-end development effort by 30%.

Experience

Work history, roles, and key accomplishments

Software Development Engineer

Discover Financial Services

Sep 2025 - May 2026 (8 months)

Architected a reusable microservices framework adopted across 12 services and redesigned transaction-processing workflows, increasing peak-hour throughput by 38%. Implemented event-driven patterns with Apache Kafka, reducing processing delays by 45%, and improved service availability from 99.3% to 99.95%.

Java Spring Boot Microservices Kafka AWS Jenkins GitHub Actions Kubernetes Docker Observability OpenAI API RAG Performance Optimization Event Driven Architecture

Software Development Engineer

IBM

Mar 2021 - Jul 2024 (3 years 4 months)

Engineered backend services supporting over 150,000 users and designed more than 40 REST APIs using Java and Spring Boot, accelerating integration delivery by 35%. Modernized legacy workflows, reducing report-generation times from minutes to under 20 seconds, and expanded automated testing coverage from 55% to 85%.