Available for opportunities

Building
enterprise-grade
systems that scale
to millions.

Senior Java Full-Stack Developer with 5+ years of expertise crafting microservices, REST APIs, and cloud-native applications for enterprise clients like United Airlines and Barclays.

Developer.java
12345 678910 11121314
@RestController
public class DiwakarKarna {

  @Value("Full-Stack Dev")
  private String role;

  private List<String> stack = List.of(
    "Java", "Spring Boot",
    "React", "AWS"
  );

  public String buildTheFuture() {
    return "Scalable & Secure";
  }
}
0+ Years Experience
0 Enterprise Clients
50K+ Peak Bookings/Day
99.99% Security Uptime
EXPERIENCE

Where I've Made
an Impact

Building mission-critical systems for Fortune 500 companies

B

Barclays

Java Full-Stack Developer
Jun 2021 – Jul 2023 · Bengaluru, India
  • Cut Oracle query latency by 35% via JPA/Hibernate indexing
  • Achieved 90%+ test coverage with SonarQube quality gates
  • Boosted fraud detection accuracy by 8% via Kafka ML models
  • Accelerated releases from quarterly to bi-weekly with CI/CD
Spring BootAngularOracleAzure KafkaJenkinsELK Stack
KP

Kaiser Permanente

Software Engineer
Jun 2019 – May 2021 · Bengaluru, India
  • Reduced clinician task time by 30% with scheduling modules
  • Maintained 99.99% security uptime for HIPAA-compliant APIs
  • Saved 20+ hrs/week with on-demand PDF generation service
  • Cut no-show appointments by 15% via automated workflows
Java 8Spring MVCJSPBootstrap Log4jELKSwagger
50K+ Peak Bookings 45% Less Data Errors 40% Faster Deploys 0 Security Breaches 90%+ Test Coverage 99.99% Uptime 50K+ Peak Bookings 45% Less Data Errors 40% Faster Deploys 0 Security Breaches 90%+ Test Coverage 99.99% Uptime
SKILLS

Technical Expertise

Languages

Java 8/11/17PythonJavaScript ES6+ TypeScriptSQLHTML5 / CSS3

Frameworks & Tools

Spring BootSpring MVCSpring Security Spring CloudHibernate / JPARESTful APIs MicroservicesApache KafkaRabbitMQ

Databases

PostgreSQLMySQLOracle MongoDBRedisDynamoDB

Testing & Monitoring

JUnit 5MockitoSelenium REST AssuredELK StackSplunk Swagger / OpenAPIGit

Frameworks & Libraries

React.js 18+Angular 14+Next.js ReduxMaterial UIBootstrap

Languages

JavaScript ES6+TypeScript HTML5CSS3 / SASS

Cloud Platforms

AWSAzure LambdaS3EC2DynamoDBCognito

DevOps & CI/CD

DockerKubernetesTerraform JenkinsGitHub ActionsGitLab CISonarQube
EDUCATION

Education & Certifications

🎓

Master's in Computer & Information Science

Southern Arkansas University, Magnolia, AR

Class of 2025

AWS Certified Developer – Associate

Amazon Web Services

Issued Jun 2025

Aviatrix Certified Engineer – Multicloud

Aviatrix, Inc.

Issued Feb 2025

Get In Touch.

Have a question or want to work together? I'd love to hear from you.

Message Sent!

Your email client has been opened with the message. Thanks for reaching out!