Personal details
Vishnu S.
Based in: 🇮🇳 India
Timezone: New Delhi (UTC+5.5)
Technical skills
Top 3 skills
About
Senior software engineer with 10+ years designing, developing and maintaining production-grade backend systems, APIs and data pipelines at scale. Builds AI infrastructure in Python and TypeScript an agentic core library across multiple LLM providers, plus evaluation harnesses and MCP tooling alongside a decade of distributed, event-driven systems in Java on AWS and Kubernetes.
Work Experience
Solution Architect
Quickflows | Mar 2026 - Present
Python
Java
SQL
Redis
RabbitMQ
Docker
Spring Boot
Langchain
Langgraph
- Architected a Java 25 and Spring Boot platform for healthcare provider credentialing, rewritten to parity from a legacy Python/Celery system
- Designed a layered service architecture over Spring Data JDBC, RestClient, and RabbitMQ, exposing 40+ versioned REST APIs
- Built a deadline-bounded fan-out orchestrator on Java virtual threads, screening providers against 7 federal and state sources within a shared 30s budget
- Implemented 20+ Spring Batch importers with atomic-replace ETL, ingesting 8M NPI records and 19 state exclusion feeds
- Integrated Spring AI for LLM-driven document extraction with evaluation harnesses to keep model output deterministic; authored ADRs and technical specifications, and ran code reviews across distributed contributors
Senior Software Engineer
Epam Systems | Sep 2021 - Feb 2026
Python
Java
MongoDB
PostgreSQL
Redis
Docker
React
Spring Boot
Apache Kafka
Kubernetes
AWS Kinesis
- Designed and developed Spring Boot microservices powering real-time clickstream analytics platforms
- Built high-throughput streaming pipelines using Kafka, Flink, and AWS Kinesis to process large-scale events
- Tuned performance and resilience on Kubernetes and AWS, meeting strict SLA, fault tolerance, and high availability requirements
- Debugged production incidents to improve reliability and security, and reviewed peer code with remote US and India teams
Projects
OptionsAnalyzer
Java
Maven 3
Docker
Spring Boot
JavaScript
Trading Systems
Project to analyze the technicals of stock options available in National Stock Exchange - India
TicTacToe
Java
WebSocket
Maven 3
React
JavaScript
A real-time multiplayer Tic Tac Toe game built with Spring Boot and React, featuring WebSocket communication for instant game updates.
Education
Sathyabama University
Bachelor of Engineering・Electrical and Electronics Engineering
Jun 2011 - Mar 2015