Senior Java Full-Stack Engineer with 11+ Years Experience

Phani Katakam Java Full Stack Developer

****************@*****.*** 417-***-**** www.linkedin.com/in/phani-katakam

Senior Java Full Stack Developer with 11+ years of experience in designing, developing, and deploying enterprise-grade applications across Banking, Healthcare, Insurance, Telecom, and Public Sector domains.

Strong expertise in Java 8–21, Spring Boot 3.x, Spring Cloud, REST APIs, Hibernate, JPA, and Microservices Architecture, delivering scalable, secure, and cloud-native applications.

Skilled in frontend frameworks including React.js, Angular 9–16, AngularJS, Next.js, TypeScript, JavaScript, HTML5, CSS3, and Tailwind CSS, building responsive and user-centric web applications.

Experienced in multi-cloud environments – AWS (EKS, Lambda, Glue, RDS, S3), GCP (Pub/Sub, GKE, BigQuery, Dataflow), and Azure (AKS, Service Bus, Key Vault, API Gateway) – for highly available and large-scale deployments.

Proficient in CI/CD automation and DevOps practices using Jenkins, GitLab CI/CD, GitHub Actions, Terraform, Docker, Kubernetes, Helm, Maven, Gradle, and SonarQube for secure, efficient, and reliable releases.

Hands-on experience with messaging, streaming, and event-driven systems using Kafka, RabbitMQ, AWS SNS/SQS, Google Pub/Sub, and Azure Event Hubs, enabling real-time data processing.

Strong background in databases and data warehousing including Oracle, PostgreSQL, MySQL, MongoDB, Cassandra, and Snowflake, with proven expertise in query optimization and performance tuning.

Applied enterprise security best practices with Spring Security, OAuth2, JWT, SSL/TLS, IAM policies, RBAC, and Zero-Trust security, ensuring compliance with HIPAA, PCI-DSS, and GDPR.

Adept at working in Agile/Scrum and SAFe environments, collaborating with architects, BAs, QA, DevOps, and product owners to deliver high-performance, regulatory-compliant solutions.

Familiar with modern monitoring & observability tools – ELK Stack, Prometheus, Grafana, and Splunk – ensuring system reliability and proactive incident resolution.

Category

Technologies

Programming / Backend

Java 7/8/11/17/21, Spring Boot 2.x/3.x, Spring Cloud, REST APIs, Hibernate, JPA, Microservices, Reactive Programming (WebFlux), GraphQL, Node.js

Frontend Development

React.js (Hooks, Redux, Material-UI, Next.js), Angular 2–16, AngularJS, TypeScript, JavaScript (ES6+), HTML5, CSS3, Bootstrap, Tailwind CSS

Cloud Platforms

AWS: EKS, ECS, Lambda, Glue, S3, RDS, CloudFormation, CloudWatch

GCP: GKE, Pub/Sub, BigQuery, Dataflow, IAM, VPC Service Controls

Azure: AKS, Service Bus, Key Vault, API Gateway, Azure Functions, Azure Monitor

DevOps & CI/CD

Jenkins, GitHub Actions, GitLab CI/CD, Azure DevOps, ArgoCD, Docker, Kubernetes, Helm, Terraform, Ansible, Maven, Gradle, SonarQube, GitHub Copilot.

Databases & DWH

Oracle, PostgreSQL, MySQL, MongoDB, Cassandra, Snowflake, AWS Redshift

Messaging & Streaming

Apache Kafka, RabbitMQ, AWS SNS/SQS, Google Pub/Sub, Azure Event Hubs, gRPC

Testing Tools

JUnit, Mockito, Selenium, Postman, Cucumber, TestNG, JMeter, Gatling

Security & Compliance

OAuth2, JWT, Spring Security, SSL/TLS, IAM (AWS, Azure AD, GCP IAM), RBAC, Zero-Trust Security, HIPAA, PCI-DSS, GDPR

Monitoring & Logging

Prometheus, Grafana, ELK Stack (Elasticsearch, Logstash, Kibana), Splunk, CloudWatch, Azure Monitor

Agile & Collaboration

Agile (Scrum, SAFe), Jira, Confluence, Git, Bitbucket, Azure Boards

Client: BCBSMA – Boston, MA Nov 2022 – Present

Role: Sr. Java Full Stack Developer

Responsibilities:

Designed and deployed Palantir Foundry pipelines for healthcare claims, provider, and patient data integration with Snowflake and AWS Glue, enabling large-scale analytics.

Built FHIR-compliant APIs using Java 21, Spring Boot 3.x, HAPI FHIR, and Spring WebFlux, supporting CMS interoperability and real-time data exchange.

Developed React.js, Angular 16, and Next.js frontends for claims dashboards, patient portals, and provider applications.

Implemented data lake ingestion pipelines on AWS (S3, Glue, Lambda, RDS), integrating with Palantir for analytics and ML models.

Secured applications with OAuth2, JWT, RBAC, SMART on FHIR, and Zero Trust security, ensuring HIPAA compliance.

Automated CI/CD with Jenkins, GitHub Actions, ArgoCD, Terraform, and Helm, delivering faster releases with full traceability.

Built event-driven systems with Kafka, RabbitMQ, and gRPC, handling real-time patient and claim processing workflows.

Implemented logging, monitoring, and observability using ELK stack, Prometheus, and Grafana, ensuring system reliability.

Developed batch data migration jobs with Spring Batch for legacy-to-cloud migration.

Collaborated with clinicians, data scientists, and business stakeholders to improve population health analytics and predictive modeling.

Delivered SMART on FHIR apps integrated with provider EHRs for secure patient access to claims and encounter history.

Environment: Java 17/21, Spring Boot 3.x, Spring WebFlux, HAPI FHIR, Palantir Foundry, Snowflake, AWS (EKS, Lambda, Glue, S3, RDS, API Gateway), Azure (AKS, Blob), GCP (BigQuery, Pub/Sub), Kafka, RabbitMQ, gRPC, React.js, Angular 16, Next.js, Tailwind CSS, Jenkins, GitHub Actions, ArgoCD, Docker, Kubernetes, Terraform, Helm, Istio, ELK Stack, Prometheus, Grafana.

Client: Verizon Telecom / Digital Retail, Texas Sep 2020 – Oct 2022 Role: Senior Java Full Stack Developer

Responsibilities:

Developed telecom service management platforms for provisioning, billing, and customer management using Java 17, Spring Boot 3.x, React.js, and Angular 12.

Implemented microservices-based architecture with Spring Cloud, Eureka, Zuul, and Resilience4j, ensuring system reliability.

Integrated Apache Kafka and RabbitMQ for real-time telecom events (usage logs, provisioning, billing transactions).

Built GraphQL and REST APIs integrated with CRM and billing systems, improving system interoperability.

Automated deployments with AWS (EKS, S3, RDS, API Gateway) and GCP (GKE, BigQuery, Pub/Sub) using Docker, Kubernetes, and Helm.

Implemented Redis caching and Elasticsearch for low-latency access to customer and network data.

Built observability solutions with Prometheus, Grafana, and ELK stack, reducing MTTR for outages.

Introduced Next.js portals for real-time usage visualization and customer support tools.

Migrated monolithic telecom apps into containerized microservices deployed on AWS/GCP.

Collaborated with DevOps engineers to build Terraform-based Infrastructure as Code (IaC).

Led Agile ceremonies, mentoring junior developers on modern Java & frontend frameworks.

Environment: Java 11/17, Spring Boot 2.x/3.x, React.js, Angular 9–12, Next.js, GraphQL, Kafka, RabbitMQ, Redis, Elasticsearch, Docker, Kubernetes, Helm, AWS (EKS, S3, RDS, API Gateway), GCP (BigQuery, Pub/Sub, GKE), Jenkins, GitHub Actions, Terraform, ELK Stack, Prometheus, Grafana.

Client: JPMorgan Chase – New York, NY Feb 2018 – Aug 2020 Role: Java Full Stack Developer

Responsibilities:

Designed real-time trading & risk systems with Java 11, Spring Boot 2.x, Node.js, and React.js, enabling low-latency trading.

Built microservices and REST APIs for trade execution, portfolio risk analysis, and compliance reporting.

Engineered Kafka-driven streaming pipelines for high-throughput trade data ingestion.

Integrated Cassandra, MongoDB, and Oracle to support structured and semi-structured financial data.

Secured financial systems with Spring Security, OAuth2, JWT, and RBAC, ensuring compliance with SOX, SEC, and FINRA regulations.

Migrated critical trading systems to AWS (EC2, Lambda, RDS) and Azure Functions, improving scalability.

Implemented CI/CD pipelines using GitLab CI, Jenkins, and Ansible, supporting continuous integration.

Optimized performance with Java multithreading, CompletableFuture, and reactive programming.

Created audit frameworks and compliance logs for financial regulations.

Built React.js dashboards for traders, integrated with GraphQL APIs for real-time market data.

Worked with cross-functional teams to modernize legacy risk management tools into cloud-native platforms.

Environment: Java 8/11, Spring Boot 2.x, Node.js, React.js, Angular 8, GraphQL, Kafka, Cassandra, MongoDB, Oracle DB, AWS (EC2, RDS, Lambda, CloudWatch), Azure (Functions, AKS), Docker, Kubernetes, GitLab CI, Jenkins, Ansible, OAuth2, JWT, ELK Stack.

Client: State of Louisiana – Baton Rouge, LA Apr 2016 – Jan 2018

Role: Java Full Stack Developer

Responsibilities:

Built citizen service portals using Angular 2–5, Bootstrap, and Spring Boot 1.x, digitizing healthcare, education, and tax services.

Developed Spring Cloud microservices for case management, eligibility, and benefits processing.

Integrated REST APIs with state legacy systems and federal platforms.

Optimized performance with PostgreSQL and Redis caching for large-scale citizen data.

Automated inter-agency communications with JMS and RabbitMQ.

Deployed apps on AWS (EC2, RDS, S3), migrating from traditional on-premises servers.

Implemented OAuth2 and Single Sign-On (SSO) for user access.

Designed batch workflows with Spring Batch for scheduled reporting.

Collaborated with government IT teams to streamline legacy-to-cloud migration.

Delivered features in Agile Scrum environment, participating in sprint planning and demos.

Environment: Java 8, Spring Boot 1.x, Spring Cloud, Angular 2–5, Bootstrap, PostgreSQL, Redis, RabbitMQ, JMS, AWS (EC2, RDS, S3), OAuth2, SSO, Jenkins, Maven, Git.

Client: MetLife – Cary, NC Jul 2014 – Mar 2016

Role: Java Developer

Responsibilities:

Developed insurance policy & claims applications with Java 8, Spring MVC, Hibernate, and Oracle PL/SQL.

Built SOAP & REST web services to integrate claims with third-party providers.

Migrated legacy modules into Spring Boot microservices, improving maintainability.

Created JSP/Servlet UIs and enhanced with AngularJS for dynamic interactions.

Automated claims adjudication using Spring Batch jobs.

Implemented logging & exception handling frameworks with Log4j/SLF4J.

Automated deployments with Maven and Jenkins, improving release cycles.

Worked with underwriters to enhance policy lifecycle workflows.

Deployed apps on WebLogic and Tomcat for enterprise environments.

Participated in Agile environment with daily standups and requirement walkthroughs.

Environment: Java 7/8, Spring MVC, Spring Boot (early adoption), Hibernate, JSP, Servlets, AngularJS, Oracle PL/SQL, SOAP, REST, Spring Batch, Maven, Jenkins, Log4j, Git, WebLogic, Tomcat.

PROFESSIONAL SUMMARY

PROFESSIONAL EXPERIENCE

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