HariKrishna Reddy

• Implemented OAuth 2.0 and JWT-based security across backend services, ensuring HIPAA compliance and secure
access to patient and financial data.
• Built unit and integration test suites using JUnit and Mockito, achieving 90%+ test coverage across critical billing and
claims services.
• Designed optimized PostgreSQL schemas, indexes, and query strategies, reducing report generation and billing query
execution time by 35%.
• Integrated Splunk-based centralized logging and alerting, enabling proactive anomaly detection and faster root-cause
analysis in production.
• Implemented Kafka producer/consumer metrics and Spring Boot health indicators, improving end-to-end
observability of claims and transaction pipelines.
• Collaborated closely with data engineers, QA, product owners, and compliance teams to deliver secure, cloud-native
healthcare platforms within aggressive release timelines.

Environment: Java 17, Spring Boot 2.x, Angular 14, PostgreSQL 14, Apache Kafka 3.x, JPA, JUnit 4.x, Mockito 4.x, GitLab CI,
Docker 20.x, Kubernetes, Splunk 9.x, AWS EC2, S3, Lambda, DynamoDB, IntelliJ IDEA.

• Optimized MySQL 5.7 queries, indexes, and stored procedures for transaction-heavy workloads, resulting in 35% faster
query execution under peak loads.

Environment: Java 11, Spring MVC, Hibernate 5.x, JDBC, MySQL 5.7, React 17, GraphQL, Apache Kafka 2.x, TestNG 7.x, Selenium
3.x, Bitbucket, Maven 3.x, Azure Cloud, Azure Functions, Prometheus, JVisualVM.

Developed and maintained Java 8-based enterprise applications using Spring Framework and Hibernate, supporting financial transaction processing systems with high reliability.

Built multithreaded components to handle concurrent transaction workflows, improving data throughput and system responsiveness by ~20%.
Leveraged Java 8 Streams and Lambda expressions to optimize collection processing, improving code readability and execution efficiency.
Designed and implemented reusable business modules and JavaBeans, improving application maintainability and
reducing duplicate logic across services.
Wrote and optimized SQL queries and stored procedures in MySQL, ensuring fast data access, strong data integrity,
and reduced query latency.
Deployed Java applications on AWS EC2 and S3, gaining hands-on experience with cloud-based hosting, storage, and
scaling strategies.
Implemented centralized application logging using Log4j, improving debugging efficiency and production issue
traceability.
Built automated unit tests using JUnit, increasing code stability and reducing regression defects during releases.
Used Git and Maven for version control and automated builds, enabling consistent CI practices across development
teams.
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Collaborated in a fast-paced Agile environment, contributing to sprint planning, feature development, and production
bug fixes.
Environment: Java 8, Spring Framework, Hibernate, JavaBeans, JDBC, JUnit, Log4j, Eclipse, IntelliJ IDEA, Git, MySQL, AWS EC2,
S3, Maven.