# Diwakar Reddy Karna

> Java Full-Stack Developer | Java 8–17 | Spring Boot | Microservices | Kafka | React & Angular | AWS | Docker | Kubernetes | CI/CD

Location: Irving, Texas, United States
Profile: https://flows.cv/diwakar

Java Full-Stack Developer with 5+ years of experience designing and building scalable microservices and cloud-native web applications using Java (8–17), Spring Boot, React, and Angular.

I specialize in RESTful APIs, event-driven architectures (Apache Kafka), and secure systems using OAuth2 & JWT. I have strong hands-on experience with AWS and Azure, leveraging services like Lambda, EC2, S3, API Gateway, DynamoDB, EKS, and CloudWatch to deliver highly available, performant systems.

I’ve improved deployment frequency by 40% through CI/CD automation with Jenkins, Docker, Kubernetes, and Terraform, and consistently deliver high-quality, maintainable code in Agile teams.

💼 Current focus: Java 17, Spring Boot microservices, AWS cloud, Kafka streaming, React front-ends/ Angular
📍 Location: Irving, TX | Open to Hybrid/Onsite/Remote roles

## Work Experience
### Java Full-Stack Developer @ United Airlines
Jan 2024 – Present | United States
Built Spring Boot microservices & REST APIs for flight scheduling and fare search, supporting 50K+ peak-hour bookings with sub-50ms latency.

Improved reliability by 45% by adding validation and fault handling in Apache Kafka event streams.

Secured cloud-native services using Spring Security (OAuth2, JWT, RBAC) and migrated legacy WebSphere apps to Dockerized microservices.

Developed React dashboards and AWS Lambda APIs (API Gateway, DynamoDB, Cognito), reducing operational costs by 20%.

### Java Full-Stack Developer @ Barclays
Jan 2021 – Jan 2023 | United States
Designed a Spring Boot KYC micro-platform, integrating core banking systems with REST APIs and OAuth2/JWT.

Optimized Oracle + Hibernate queries, cutting latency by 35% and improving transaction throughput.

Integrated Kafka-based fraud alerts and built Angular analytics dashboards for risk teams.

Automated CI/CD using Docker, Jenkins, and SonarQube, achieving 90%+ test coverage and faster releases.

### Software Engineer @ Kaiser Permanente
Jan 2019 – Jan 2021 | United States
Delivered healthcare modules using Java 8, Spring MVC, JSP, improving clinician productivity by 30%.

Built HIPAA-compliant REST APIs with encryption and access controls, maintaining 99.99% data security uptime.

Automated patient notifications with Spring Scheduler, reducing no-shows by 15%.

Migrated legacy services to Spring Boot and introduced ELK logging for better monitoring.


## Education
### Master's degree in Computer and Information Sciences, General
Southern Arkansas University


## Contact & Social
- LinkedIn: https://linkedin.com/in/diwakarreddyk11
- GitHub: https://github.com/in/diwakarreddyk11

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Source: https://flows.cv/diwakar
JSON Resume: https://flows.cv/diwakar/resume.json
Last updated: 2026-04-17