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I'm a Java Developer with around 5 years of experience building high-performance, scalable applications in agile environments. I focus on delivering reliable software by aligning with SDLC and Agile practices, and I enjoy crafting robust backend services with Spring and Hibernate, as well as building responsive front-end interfaces with React, Angular, and Node.js. I've designed enterprise applications using Hibernate, JSF, React.js, Angular, Node.js, and GraphQL, integrated OpenSearch/Splunk for real-time monitoring, and implemented SOAP-based data exchange. I have strong AWS experience (EC2, S3, Lambda, API Gateway, RDS, SQS, SNS, IAM, CloudFormation, CloudWatch) and a track record of improving performance and reliability through automated testing (JUnit/Mockito), CI/CD (Jenkins, Docker), and secure authentication using Spring Security with LDAP and OAuth2/JWT.…I'm a Java Developer with around 5 years of experience building high-performance, scalable applications in agile environments. I focus on delivering reliable software by aligning with SDLC and Agile practices, and I enjoy crafting robust backend services with Spring and Hibernate, as well as building responsive front-end interfaces with React, Angular, and Node.js. I've designed enterprise applications using Hibernate, JSF, React.js, Angular, Node.js, and GraphQL, integrated OpenSearch/Splunk for real-time monitoring, and implemented SOAP-based data exchange. I have strong AWS experience (EC2, S3, Lambda, API Gateway, RDS, SQS, SNS, IAM, CloudFormation, CloudWatch) and a track record of improving performance and reliability through automated testing (JUnit/Mockito), CI/CD (Jenkins, Docker), and secure authentication using Spring Security with LDAP and OAuth2/JWT.

Sai Krishna

Developer, Programmer, Web Developer, +4

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I'm a Java Developer with around 5 years of experience building high-performance, scalable applications in agile environments. I focus on delivering reliable software by aligning with SDLC and Agile practices, and I enjoy crafting robust backend services with Spring and Hibernate, as well as building responsive front-end interfaces with React, Angular, and Node.js. I've designed enterprise applications using Hibernate, JSF, React.js, Angular, Node.js, and GraphQL, integrated OpenSearch/Splunk for real-time monitoring, and implemented SOAP-based data exchange. I have strong AWS experience (EC2, S3, Lambda, API Gateway, RDS, SQS, SNS, IAM, CloudFormation, CloudWatch) and a track record of improving performance and reliability through automated testing (JUnit/Mockito), CI/CD (Jenkins, Docker), and secure authentication using Spring Security with LDAP and OAuth2/JWT.…I'm a Java Developer with around 5 years of experience building high-performance, scalable applications in agile environments. I focus on delivering reliable software by aligning with SDLC and Agile practices, and I enjoy crafting robust backend services with Spring and Hibernate, as well as building responsive front-end interfaces with React, Angular, and Node.js. I've designed enterprise applications using Hibernate, JSF, React.js, Angular, Node.js, and GraphQL, integrated OpenSearch/Splunk for real-time monitoring, and implemented SOAP-based data exchange. I have strong AWS experience (EC2, S3, Lambda, API Gateway, RDS, SQS, SNS, IAM, CloudFormation, CloudWatch) and a track record of improving performance and reliability through automated testing (JUnit/Mockito), CI/CD (Jenkins, Docker), and secure authentication using Spring Security with LDAP and OAuth2/JWT.

Available to hire

I’m a Java Developer with around 5 years of experience building high-performance, scalable applications in agile environments. I focus on delivering reliable software by aligning with SDLC and Agile practices, and I enjoy crafting robust backend services with Spring and Hibernate, as well as building responsive front-end interfaces with React, Angular, and Node.js.

I’ve designed enterprise applications using Hibernate, JSF, React.js, Angular, Node.js, and GraphQL, integrated OpenSearch/Splunk for real-time monitoring, and implemented SOAP-based data exchange. I have strong AWS experience (EC2, S3, Lambda, API Gateway, RDS, SQS, SNS, IAM, CloudFormation, CloudWatch) and a track record of improving performance and reliability through automated testing (JUnit/Mockito), CI/CD (Jenkins, Docker), and secure authentication using Spring Security with LDAP and OAuth2/JWT.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Java Developer at PNC Financial Services

January 1, 2024 - Present

Enhanced the performance of dynamic React.js components, improving frontend speed by 35% with Redux state management. Implemented scalable microservices architecture using Spring Boot and Spring Cloud, reducing system latency by 35%. Integrated Spring Security with LDAP and OAuth to reduce login failures by 40%. Developed RESTful APIs with Spring MVC and WebFlux, boosting API throughput by 30%. Managed deployment and hosting on AWS EC2 using cost-optimization strategies including auto-scaling and load balancing.

Software Engineer at Parker Hannifin Corp

July 31, 2022 - July 11, 2025

Leveraged Angular and Angular Material to enhance development efficiency. Conducted unit and integration testing with Java Spring Boot JUnit, automating backend testing to reduce redundancy by 40%. Secured Java apps using Spring Security with OAuth2.0 and JWT, reducing vulnerabilities by 25%. Optimized data processing by 40% using Spring Data JPA and Lambda expressions. Improved CI/CD pipelines using Jenkins and Docker, increasing deployment frequency by 10%. Designed asynchronous messaging with Apache Kafka to enable event-driven communication and maintain performance under load.

Java Developer at Vivma Software Inc

January 31, 2021 - July 11, 2025

Developed Hibernate ORM solutions optimizing database queries for 40% better performance. Engineered RESTful APIs and microservices with Java 11, Spring MVC, and Node.js, boosting throughput by 25% and reducing API latency by 30%. Enhanced NoSQL applications with MongoDB, improving query execution by 20%. Managed MySQL and NoSQL databases for high availability. Used Mockito to enhance unit testing accuracy and developer productivity. Automated business logic using complex SQL queries and stored procedures, cutting manual effort by 50%.

Java Developer at PNC Financial Services

January 1, 2024 - Present

Enhanced performance of React.js front-end components, boosting speed by 35%, while ensuring smooth user interactions using Redux. Implemented scalable microservices architecture with Spring Boot and Spring Cloud, reducing system latency by 35% and optimizing API response times. Enhanced user authentication via Spring Security with LDAP and OAuth, reducing login failures by 40%. Developed RESTful APIs using Spring MVC and WebFlux to improve data exchange throughput by 30%. Deployed and managed AWS EC2 instances to host Java applications, optimizing infrastructure costs by 30% through auto-scaling and load balancing.

Software Engineer at Parker Hannifin Corp

July 31, 2022 - August 28, 2025

Leveraged Angular Material to enhance development efficiency. Conducted unit and integration testing with JUnit to automate backend API tests, improving product reliability and reducing testing redundancy by 40%. Secured applications with Spring Security using OAuth2.0 and JWT, reducing security vulnerabilities by 25%. Enhanced data access and processing by 40% with Spring Data JPA optimizations. Optimized CI/CD pipeline using Jenkins and Docker, increasing deployment frequency by 10%. Designed asynchronous messaging system with Apache Kafka for high-throughput event-driven communication.

Java Developer at Vivma Software Inc

January 31, 2021 - August 28, 2025

Developed Hibernate ORM solutions improving database query performance by 40% through caching and lazy loading. Engineered RESTful APIs and microservices using Java 11, Spring MVC, and Node.js, improving throughput by 25% and reducing latency by 30%. Optimized NoSQL queries by 20% using MongoDB and administered MySQL/NoSQL databases ensuring high availability. Used Mockito for advanced unit testing to reduce debugging time by 40%. Developed complex SQL queries and stored procedures automating business logic, cutting manual effort by 50%.

Java Developer at PNC Financial Services

January 1, 2024 - November 19, 2025

Enhanced the performance of dynamic React.js components, boosting frontend speed by 35% through efficient state management with Redux. Implemented a scalable microservices architecture using Spring Boot and Spring Cloud, reducing system latency by 35% and improving API response times through optimized API development and load balancing. Implemented Spring Security with LDAP and OAuth providers, strengthening user authentication and reducing login failures by 40% across a distributed microservices architecture. Developed RESTful APIs using Spring MVC and Spring WebFlux to optimize data exchange between microservices and the frontend, resulting in a 30% improvement in API throughput. Deployed and managed AWS EC2 instances to host scalable Java applications, optimizing infrastructure costs by 30% through right-sizing, auto-scaling, and load balancing strategies.

Software Engineer at Parker Hannifin Corp

July 1, 2022 - July 1, 2022

Leveraged Angular's built-in tools and libraries, including Angular Material, to enhance development efficiency. Conducted extensive unit and integration testing using Java Spring Boot (JUnit), automating backend API calls to improve product reliability and minimize testing redundancy by 40%. Secured Java applications by leveraging Spring Security to implement robust authentication mechanisms, including OAuth2.0 and JWT, leading to a 25% reduction in security vulnerabilities and improved access control. Enhanced data access and processing performance by 40% using Spring Data JPA's query optimizations and Lambda expressions for parallel execution and lazy evaluation, streamlining transformations with custom functional interfaces and collectors. Optimized the CI/CD pipeline with Jenkins and Docker, automating build, test, and deployment processes for Java applications, leading to a 10% increase in deployment frequency, reduced errors, and improved development efficiency. Designed and imp

Java Developer at Vivma Software Inc

January 1, 2021 - January 1, 2021

Developed Hibernate-based ORM solutions, optimizing database query execution and improving application performance by 40% through caching, lazy loading, and query optimizations. Engineered RESTful APIs and microservices using Java 11, Spring MVC, and Node.js, refining server-side logic and boosting throughput by 25% while reducing API latency by 30%. Optimized a scalable NoSQL application with MongoDB, improving query execution by 20% and ensuring high availability with MySQL and NoSQL databases. Leveraged Mockito for precise unit testing, reducing debugging time by 40% and improving developer productivity. Developed and optimized complex SQL queries, stored procedures, and triggers to automate business logic and cut manual effort by 50% and enhance overall system efficiency.