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Rajib Samanta

@rajibsamanta

GenAI Solutions Architect at Persistent Systems who built a banking RAG chatbot and AI agents that cut manual resolution time by ~60%.

India

Message

At Persistent Systems, I led development of Monument Bank’s Integration Layer, connecting Salesforce with core banking systems through 12+ microservices. I also built a LangChain/RAG chatbot over banking product and compliance documentation to help the team resolve integration queries faster during rollout.

Across banking, insurance, manufacturing, and customer experience platforms, I’ve delivered backend and cloud systems alongside GenAI applications. I built AI agents that automated enterprise support workflows and cut manual resolution time by ~60%, drawing on a foundation in Java, Python, and AWS.

Experience

Work history, roles, and key accomplishments

Project Lead

Persistent Systems

Jan 2025 - May 2026 (1 year 4 months)

Led development of an Integration Layer of 12+ microservices connecting Salesforce with core banking systems. Architected a multi-channel asynchronous notification system on AWS EKS and SQS, achieving a 99.9% uptime SLA.

Java Spring Boot AWS Amazon EKS Amazon SQS RDS MySQL GitHub Co Pilot Lang Chain RAG

Associate Technical Architect

Tavant Technologies

Jan 2024 - Dec 2024 (11 months)

Architected a microservice-based warranty platform serving 50+ enterprise dealers worldwide. Integrated 10+ payment providers and shipped a LangChain/RAG assistant that reduced support tickets by ~30%.

Java Spring Boot Python Django Oracle AWS Lang Chain RAG

Assistant Manager - Technology

Synechron Technologies

Aug 2019 - Nov 2023 (4 years 3 months)

Led modernisation of a legacy monolith into 8+ Spring Cloud microservices, cutting deployment time by 60%. Built a Drools-based business rules engine processing 100K+ disbursement decisions daily.

Java 8 Spring Cloud Spring Boot React PostgreSQL AWS Lambda JPA Liquibase Drools

Senior Tech Lead

HCL Technologies

Apr 2018 - Aug 2019 (1 year 4 months)

Implemented Kafka pub/sub event-driven architecture for real-time communication across 2M+ dental plan members. Added circuit breakers and load balancing with Resilience4j, reducing cascading failures by ~70%.

Java Spring Boot Kafka AWS Docker

Lead - Technology

Synechron Technologies

Aug 2016 - Apr 2018 (1 year 8 months)

Optimised the HSBC UK Prime Brokerage platform with the Executor Framework and multithreading, raising hedge-fund service bundle throughput by ~50%.

Java Multithreading Executor Framework

Senior Project Engineer

Wipro Technologies

Feb 2015 - Aug 2016 (1 year 6 months)

Built Lloyds Bank UK Internet Banking Contact Us modules and RESTful service layers with Spring MVC and Hibernate, serving 1M+ customers.

Spring MVC Hibernate RESTful Services

IT Analyst

Tata Consultancy Services

Jul 2013 - Jan 2015 (1 year 6 months)

Customised TCS BaNCS Insurance for MN Insurance (Netherlands); designed JAX-WS services and 30+ Oracle stored procedures for policy and claims processing.

JAX WS Oracle Stored Procedures