Hemali Vishwakarma

Software Engineer @Cognizant

IN

Java Full-Stack Developer with hands-on experience across Banking & Financial Services and Telecom domains, delivering scalable backend systems, RESTful APIs, and modern frontend applications. Developing a Credit Card Offer Generation System using Java and Spring Boot, processing customer records daily through rule-based pipelines that filter eligible customers and generate personalised credit card offers. Designed daily batch job schedulers applying OOP principles and design patterns to build modular, fault-tolerant, time-driven processing pipelines. Resolved critical SQL bottlenecks where queries exceeded 3 minutes; redesigned with proper JOINs and optimised access patterns, reducing DB load and making database calls 30% faster. Migrated SQL functions and triggers to Java methods using JPA and Hibernate ORM, replacing row-by-row DB processing with chunk-based logic, improving transaction management and testability. Deployed application to AWS Cloud via CI/CD pipelines, wrote JUnit test cases to ensure code coverage and adherence to change management standards. Led end-to-end migration of 60+ screens from Vanilla JavaScript to React.js, improving page load speed by 40% and establishing a reusable component architecture. Modernised backend from Spring MVC to Spring Boot, reducing API response times by 25%; applied Spring Security best practices to secure API endpoints. Implemented Zustand-based client-side caching across 3 critical APIs, reducing redundant API calls by 60% and improving overall application latency by 30%. Applied Java 8+ Streams, Lambdas, and OOP design patterns; collaborated in Agile sprints with sprint ceremonies, estimation, and burndown reviews.

CMR Institute of Technology, Hyderabad

Bachelor of Technology - BTech

CMR Institute of Technology,Hyderabad

Bachelor of Technology - BTech

Sri Sai Ram High School

Schooling

Narayana Junior College - India

Intermediate