Basant Patidar
8+ years shipping enterprise-scale distributed systems — from mutual fund platforms processing millions of daily transactions to e-commerce search handling 100M+ queries a day.
01.
About Me
A little context behind the numbers.
I'm a Senior Full-Stack Developer who specializes in building distributed systems that handle real enterprise load — not toy scale, but hundreds of millions of daily requests and financial platforms where downtime is not an option.
My career has taken me across three demanding domains. At T. Rowe Price, I built and modernized the microservices backbone behind mutual fund transactions — millions of trades a day, 300+ funds, strict financial compliance. At Walmart, I scaled e-commerce search infrastructure that processes 100M+ daily queries, and separately led a healthcare migration that saved thousands of hours of pharmacy labor nationwide.
I lead with architecture — I'm comfortable owning technical design documents, driving discussions across 30+ person organizations, and making the right call between pragmatism and elegance. Java and Spring Boot are my home base, but I'm equally at ease in the cloud (AWS, Azure), the data layer (Kafka, Cassandra, Cosmos DB), or the frontend (React, Angular).
T. Rowe Price
Mutual fund platforms processing millions of daily trades across 300+ funds.
Walmart
Query understanding for 100M+ daily search requests via a DAG-driven ML pipeline.
Walmart Health & Wellness
Event-driven microservices saving 2,500+ hours of pharmacy labor every day.
02.
Systems Gallery
Interactive architecture diagrams from production systems I've built and scaled.
Apr 2020 – Sep 2025
T. Rowe Price — Self-Serve Journey Platform
End-to-end mutual fund transaction platform processing millions of daily trades across 300+ funds. Built on a microservices architecture with the Retail Service Platform (RSP) as the core engine, integrating third-party financial data providers and AWS cloud infrastructure.
- ▹Millions of daily financial transactions
- ▹300+ mutual fund products integrated
- ▹30+ person organization
- ▹8–10 endpoints modernized (RMD migration)
Tech Stack
03.
Experience
The roles, the systems, and the scale behind the work.
- ▹Built a DAG-based execution engine to orchestrate 70+ parallel ML models (classification, categorization), significantly improving search relevance.
- ▹Designed highly available distributed systems using Resilience4j circuit breakers, sustaining 99.9%+ availability across multi-region Cassandra clusters.
- ▹Developed Python automation scripts to preprocess high-volume search logs and validate inference accuracy for 70+ ML models, reducing manual data audit time by 40%.
- ▹Designed and implemented scalable services on Azure, leveraging Cosmos DB and Kubernetes to support high-throughput data processing and messaging workloads.
- ▹Integrated BNY Mellon Pershing and FactSet RESTful APIs to automate financial data retrieval for 300+ mutual fund products, RMD, and college savings accounts.
- ▹Led architectural design discussions and authored technical design documents engaging directly with product owners across a 30+ person organization.
- ▹Designed and deployed cloud-native services on AWS (EC2, S3, SNS, SQS), leveraging EMR for large-scale data processing within Spring Boot applications.
- ▹Managed multi-database systems including IBM DB2, PostgreSQL, and DynamoDB, ensuring data integrity across high-availability financial applications.
- ▹Migrated monolithic legacy systems to cloud-native microservices using Java 17 and Spring WebFlux, reducing pharmacy staff labor by 2,500+ hours per day across the United States.
- ▹Architected resilient event-driven data pipelines on Azure using Cosmos DB and Azure SQL with CI/CD orchestration via Concord for automated Kubernetes deployments.
- ▹Implemented Kafka-based event orchestration to synchronize Cosmos DB change feed updates with downstream API executions across distributed microservices.
- ▹Migrated the RMD service from Groovy to Java Spring Boot, modernizing 8–10 endpoints and implementing JPA/Hibernate to improve throughput and maintainability.
- ▹Built and maintained Angular/TypeScript frontend features using RxJS for reactive state management across fund transaction and portfolio views.
- ▹Conducted code reviews, led technical design discussions, and maintained high test coverage using JUnit 5 and Mockito within a 12-person Agile/Scrum team.
- ▹Built and maintained full-stack features using Spring MVC, Hibernate, and Oracle SQL within a 15-person engineering team.
- ▹Developed interactive campaign analytics dashboards using D3.js and HTML5 Canvas, delivering real-time SVG-based ad performance visualizations.
04.
Skills
Technologies I've used in production at enterprise scale.
Backend
Cloud & Infra
Data & Messaging
Frontend
DevOps & Monitoring
Testing & Methodology
05.
Get in Touch
Open to new opportunities and interesting projects. I'll get back to you within a day.
Whether you have a role in mind, a system to build, or just want to connect — drop me a message and let's talk.