Java Full Stack Developer with Microservices Expertise

DURGAPRASAD GANTA

Java Full Stack Developer

EMAIL ID:***********@*****.*** PHONE NUMBER:+1-314-***-****

PROFESSIONAL SUMMARY

Experienced Java Full Stack Developer with 6+ years specializing in backend and frontend technologies, delivering scalable and secure enterprise applications across healthcare and financial domains.

Expertise in Java, Reactive Programming, and Spring Boot frameworks for building robust microservices with strong focus on security using Spring Security, OAuth, and JWT tokens.

Skilled in designing and developing RESTful and SOAP APIs, ensuring seamless communication between distributed systems with efficient data serialization and error handling.

Proficient in frontend development using Angular (directives, reactive forms), React (Hooks, Redux state management), jQuery, GraphQL, HTML, and JavaScript for responsive and dynamic single-page applications.

Extensive hands-on experience with AWS (Terraform, Kubernetes, SQS), Azure (AKS, Active Directory, Blob Storage, Key Vault), and DevOps tools such as Docker, Ansible, Jenkins, and CI/CD pipelines.

Developed scalable and fault-tolerant messaging solutions leveraging Apache Kafka, RabbitMQ, ActiveMQ, Azure Service Bus, and AWS SQS for asynchronous communication across microservices.

Strong database skills working with SQL databases like Oracle, MySQL, PostgreSQL, and NoSQL databases such as MongoDB, Cassandra, Cosmos DB, and DynamoDB, including query optimization and stored procedures.

Proficient with JDBC client, JDBC Template, and ORM frameworks for efficient database connectivity and transactional management within Java applications.

Well-versed in automated testing frameworks and tools like JUnit, Selenium, Cucumber, Postman, Swagger, and SoapUI to ensure high code quality and reliability.

Experience in code quality and test coverage tools including SonarQube, Snyk.io, Jacoco, and frontend testing using Jasmine and Karma for maintaining 80-90% coverage.

Skilled in monitoring and observability tools such as Splunk, ELK Stack, Prometheus, Grafana, and Datadog for real-time application performance and health monitoring.

Comfortable with version control systems including Git, GitHub, Bitbucket, and Subversion to manage source code and collaborative development workflows.

Hands-on experience in both Agile and Waterfall software development methodologies, ensuring timely delivery and continuous improvement.

Adept at integrating Feign Client and WebClient for declarative REST client communication within microservices architectures.

Strong communicator and team player with proven ability to mentor junior developers and collaborate across cross-functional teams for delivering business-critical solutions.

TECHNICAL SKILLS

Programming Languages: Java, Reactive Programming, Python (basic), JavaScript, TypeScript, SQL, PL/SQL

Backend Technologies: Spring Boot, Spring Security, Microservices, RESTful APIs, SOAP APIs, OAuth2, JWT Tokens, Feign Client, WebClient

Frontend Technologies: Angular (directives, reactive forms), React (Hooks, Redux), jQuery, GraphQL, HTML5, CSS3, JavaScript

Cloud Platforms: AWS (Terraform, Kubernetes, SQS), Azure (AKS, Active Directory, Blob Storage, Key Vault), Google Cloud Platform (basic)

Messaging Services: Apache Kafka, RabbitMQ, ActiveMQ, Azure Service Bus, AWS SQS

Databases: Oracle, MySQL, PostgreSQL, MongoDB, Cassandra, Cosmos DB, DynamoDB, Stored Procedures, JDBC, ORM (Hibernate)

DevOps Tools: Docker, Jenkins, Ansible, CI/CD Pipelines, Kubernetes, Terraform

Testing & Automation: JUnit, Selenium, Cucumber, Postman, Swagger, SoapUI, Jasmine, Karma, SonarQube, Jacoco, Snyk.io

Monitoring & Logging: Splunk, ELK Stack (Elasticsearch, Logstash, Kibana), Prometheus, Grafana, Datadog

Version Control: Git, GitHub, Bitbucket, Subversion

Methodologies: Agile (Scrum), Waterfall

PROFESSIONAL EXPERIENCE

UnitedHealth Group (Jan 2024 – Present)

Java Full Stack Developer

Developed scalable microservices architecture using Spring Boot, implementing security with Spring Security, OAuth2, and JWT tokens to protect sensitive healthcare data aligned with HIPAA compliance.

Built responsive single-page applications (SPA) using Angular directives, reactive forms, and React Hooks with Redux state management for dynamic UI experiences in healthcare portals.

Designed and maintained RESTful and SOAP APIs for seamless integration with third-party healthcare providers and internal systems, leveraging Feign Client and WebClient for robust inter-service communication.

Automated cloud infrastructure provisioning using Terraform for AWS and managed containerized deployments on Azure Kubernetes Service (AKS) to improve scalability and fault tolerance.

Implemented asynchronous event-driven architecture using Apache Kafka and Azure Service Bus, ensuring reliable processing of healthcare claims and patient data workflows.

Enhanced database performance by optimizing PostgreSQL queries and stored procedures, improving transaction throughput by 25%, and managed secure connections with JDBC Template and ORM frameworks.

Integrated Azure Blob Storage and Azure Key Vault for secure data storage and secret management, safeguarding sensitive patient records and credentials.

Developed and executed comprehensive automated tests with JUnit, Postman, Cucumber, and achieved 90% test coverage using SonarQube and Jacoco, ensuring code quality and reliability.

Monitored application performance and errors using Splunk, ELK Stack, and Prometheus-Grafana dashboards, proactively reducing downtime and troubleshooting issues swiftly.

Leveraged AWS SQS and RabbitMQ messaging services to decouple microservices and improve system resilience in the healthcare data processing pipeline.

Participated actively in Agile Scrum ceremonies, collaborating closely with product owners, QA, and cross-functional teams to deliver incremental value and adapt to changing requirements.

Used Docker containers and Jenkins pipelines to automate build, test, and deployment cycles, reducing manual interventions and deployment time by 40%.

Developed frontend reusable components with Angular reactive forms and GraphQL queries for efficient data retrieval and form validation across healthcare applications.

Mentored junior developers in best practices for cloud-native Java development, reactive programming, and modern frontend frameworks, enhancing overall team productivity.

Implemented security best practices including OAuth2 scopes, JWT token refresh mechanisms, and audit logging to meet compliance and data governance requirements.

Tata Consultancy Services (Feb 2022 – July 2023)

Java Full Stack Developer

Developed complex backend microservices using Spring Boot with integrated Spring Security for enterprise banking applications, utilizing OAuth2 and JWT for secure authentication and authorization.

Designed interactive frontend modules with Angular, React Hooks, Redux, and jQuery to create seamless user experiences for financial dashboards and customer portals.

Created and maintained RESTful and SOAP web services to ensure interoperability between legacy and modern systems, enhancing transaction reliability and data consistency.

Built scalable messaging workflows using RabbitMQ and Apache Kafka, enabling asynchronous communication and real-time transaction processing in a high-throughput environment.

Automated infrastructure deployment using Terraform for AWS resources and managed Kubernetes clusters, improving system scalability and reducing provisioning time.

Optimized complex SQL queries and stored procedures in Oracle and MySQL, enhancing data retrieval speeds and reducing latency during peak financial operations.

Implemented automated test suites with JUnit, Selenium, Cucumber, and utilized SonarQube for static code analysis, achieving over 85% code coverage across projects.

Used Prometheus and Grafana for real-time monitoring of service health and application metrics, enabling early detection of anomalies and efficient incident management.

Developed CI/CD pipelines with Jenkins and Ansible, automating build, test, and deployment workflows, which significantly reduced release cycle times.

Integrated Feign Client and WebClient within microservices to enhance REST API communication with resilience and circuit breaker patterns.

Implemented OAuth2 authorization flows and JWT token handling, securing APIs and ensuring compliance with internal security policies.

Managed NoSQL databases like MongoDB and Cassandra, designing flexible schemas to support unstructured data needs for customer analytics applications.

Developed frontend reactive forms in Angular, ensuring dynamic validations and improved user input handling for banking applications.

Collaborated with cross-functional teams in Agile environments, facilitating sprint planning, retrospectives, and continuous delivery of business features.

Leveraged Git, GitHub, and Bitbucket for version control and branching strategies, streamlining collaborative development and code reviews.

Northern Trust (March 2019 – January 2022)

Java Full Stack Developer

Architected and implemented microservices backend solutions using Java, Spring Boot, and Microservices architecture, focusing on scalability and fault tolerance for financial applications.

Developed secure RESTful and SOAP APIs utilizing Spring Security, OAuth2, and JWT tokens for client authentication and data authorization within banking workflows.

Built rich user interfaces with Angular, React, and jQuery, implementing reactive forms, Redux state management, and GraphQL for efficient data querying.

Maintained and optimized relational databases including Oracle, PostgreSQL, and MySQL, enhancing stored procedure efficiency and query performance by 20%.

Designed and supported NoSQL solutions with MongoDB and Cassandra to accommodate large-scale, high-velocity financial data sets.

Developed asynchronous message-based communication using ActiveMQ and AWS SQS, enabling decoupled and resilient microservices interaction.

Automated build and deployment processes using Jenkins, Docker, and implemented CI/CD pipelines to ensure smooth release cycles.

Utilized Splunk and ELK Stack to monitor application logs, troubleshoot errors, and maintain system health with real-time alerting.

Created comprehensive automated test cases with JUnit, Selenium, and Cucumber, enforcing rigorous quality assurance protocols.

Worked in Agile Scrum teams, participating in daily stand-ups, sprint reviews, and backlog grooming to deliver iterative improvements.

Employed Git and Subversion for source control management, supporting branching and merging workflows in distributed teams.

Integrated Feign Client and WebClient in microservices for robust and scalable inter-service API communication.

Developed complex SQL scripts and leveraged JDBC Template for efficient data access and transactional integrity.

Enhanced frontend applications using GraphQL, HTML5, and JavaScript, focusing on performance optimization and responsive design.

Supported legacy application migration to microservices, improving modularity, scalability, and maintainability of financial systems.

EDUCATION

Master of Science in Computer Science

[Campbellsville University], [Louisville City, Kentucky] — 2025

CERTIFICATION

Oracle Certified Professional, Java SE Programmer

AWS Certified Developer

Microsoft Certified: Azure Developer Associate

Contact this candidate