Stack Developer Node Js

Java Full Stack Developer

Name: Sreevalli G

Email.ID: *******************@*****.***

Contact No: 659-***-****

Professional Summary:

•Senior Full Stack Developer with 10+ years of experience in designing and developing enterprise applications with strong emphasis on intuitive UI/UX using React.js, TypeScript, GraphQL, Tailwind CSS, and modern JavaScript frameworks.

•Adept at building scalable cloud-native applications with Java 9, Spring Framework, Node.js, and Java Spring Boot, integrating REST/GraphQL APIs, and deploying on AWS, GCP, and Azure.

•Hands-on experience with Azure Event Hub and Azure Service Bus for event-driven microservices and real-time Azure event streaming architectures.

•Skilled in Python programming for data processing and automation, including building data pipelines with Azure Databricks.

•Instrumented services using Azure Application Insights and handled secrets securely via Azure Key Vault and RBAC policies.

•Proficient in Object-Oriented Programming (OOP) with expertise in building single-page applications (SPAs) and React Native mobile apps using AngularJS, Angular 8–13, React.js, Redux, and Node.js.

•Hands-on experience building scalable Java-based applications and modern frontends using React and TypeScript, deployed on AWS cloud infrastructure.

•Led implementation of secure, scalable APIs using Java (Spring Boot) with integrations to Azure Cosmos DB, Azure SQL, and Blob Storage for inventory and device tracking.

•Architected and led development of React Native applications optimized for mobile-first experiences, including cross-platform support using React Native Web for seamless mobile and browser compatibility.

•Proven leadership in designing mobile-to-web architectures, driving scalable and reusable UI components across platforms with strong emphasis on performance and accessibility.

•Involved in full SDLC including business requirements gathering, design validation, development, testing, deployment, and documentation.

•Extensive experience building and consuming RESTful APIs, GraphQL endpoints, and working with message brokers (SNS/SQS, Azure ServiceBus) in cloud-based environments (AWS, Azure) for enterprise-grade applications.

•Designed, implemented, and optimized complex business rules using Drools and Red Hat Decision Manager (BRMS) to automate claims adjudication and policy compliance workflows.

•Experience designing secure, scalable cloud-native services using Azure Functions, Spring Boot, and Azure PaaS, with strong focus on architecture translation, API design, and infrastructure observability.

•Expert in frontend technologies such as HTML5, CSS3, Bootstrap, Angular 2+, React JS, React Native, and Node.js.

•Developed RESTful backend services using Spring Boot, Spring MVC, Spring Data JPA, and Domain-Driven Design (DDD) principles.

•Implemented and maintained CI/CD pipelines using Jenkins, Azure DevOps, and Git for automated build, test, and deployment cycles.

•Integrated LLMOps practices and prompt templates into a custom backend, simulating secure healthcare bot interactions.

•Proficient in DevOps tools like Docker, Kubernetes, Terraform, and Ansible for infrastructure provisioning and orchestration.

•Experience managing deployments on AWS using services like ECS, Lambda, CloudFormation, IAM, and CloudWatch.

•Strong in API testing using Postman, SOAPUI, and Fiddler; well-versed in writing unit and integration tests with JUnit, Mockito, and performance testing using JMeter.

•Worked across Windows, Linux, and UNIX environments using IDEs like Eclipse, IntelliJ IDEA, TOAD, and Visual Studio Code.

Technical Skill Set:

Languages

Java 9/11/14, JavaScript, TypeScript, SQL, PL/SQL, Kotlin, C#, Python

Frontend Technologies

HTML5, CSS3, SASS/SCSS, Bootstrap, JavaScript, AJAX, JSON, Angular 2–13, Ionic,React.js, Redux, jQuery, React Native, React Navigation, Expo CLI, Tailwind CSS, Material UI

Backend Technologies

Spring Boot, Spring MVC, Spring Security, Spring Data JPA, Hibernate, Node.js, Express.js, GraphQL, ASP.NET Web API, AWS SNS/SQS, OAuth2, JWT

Microservices &

Architecture

RESTful APIs, GraphQL APIs, Domain-Driven Design, 12-Factor App Methodology, JWT, OAuth2

DevOps & Automation

Jenkins, Azure DevOps, Git, GitHub, Bitbucket, Docker, Kubernetes, OpenShift,IaC Maven, Gradle, Helm, Ansible, Terraform, SonarQube

Cloud Platforms

AWS (ECS, Lambda, S3, CDK, S3, CloudWatch, IAM, DynamoDB), Azure, Google Cloud Platform (GCP), Pivotal Cloud Foundry (PCF)

DatabaseSystems

Oracle, SQLServer, MySQL, PostgreSQL, DB2, Cassandra, MongoDB, DynamoDB.

Database Tools

Toad for Oracle/SQL/MySQL, SQL Developer, Aqua Data Studio, Microsoft SQL Server Management Studio (SSMS)

Testing & QA

JUnit, Mockito, JMeter, Postman, SOAPUI, Advanced REST Client, Newman, Jest, React Native Testing library

Version Control

Git, GitHub, Bitbucket, Perforce, Tortoise SVN, CVS, Rational ClearCase

IDEs & Editors

Eclipse, IntelliJ IDEA, Visual Studio Code, JDeveloper, MyEclipse, Guidewire Studio Suite

Design & Diagrams

draw.io, MS Visio, Lucidchart, UML Diagrams (Class, Sequence, Component), Microservices Architecture Maps, CI/CD Pipelines, API Flow Diagrams, Network Topology, DFDs

Monitoring & Logging

CloudWatch, Log4j, SLF4J, Fiddler

Methodologies

Agile, Scrum, Test-Driven Development (TDD), MVC, DAO, DTO, Singleton, Observer, Factory, Abstract Factory

PROFESSIONAL EXPERIENCE:

Client: Premier INC SEPT 2024 – PRESENT

Role: Lead Full Stack Developer

Responsibilities:

•Spearheaded design and development of scalable microservices architecture using Java 9 and Spring Boot, following 12-factor app methodology for cloud-native delivery.

•Developed and optimized Python scripts for building data pipelines and automation workflows using Azure Databricks, improving data processing efficiency.

•Developed React Native mobile apps for real-time healthcare analytics, integrated with GraphQL and REST APIs.

•Built modular UI components using React Native and React Navigation, ensuring consistency and accessibility across iOS and Android. Leveraged Ionic's native plugins and UI toolkit to build device-compatible features like push notifications, offline sync, and camera access for healthcare workflows.

•Built modular, responsive UI components using React.js, Redux, and TypeScript; implemented Tailwind CSS for consistent styling and improved developer velocity.

•Developed backend services using Node.js, Express.js, and GraphQL, deployed to AWS ECS with CI/CD pipelines via Azure DevOps.

• Built and consumed GraphQL and REST API endpoints using Node.js and Express.js, ensuring secure access to healthcare data in compliance with HIPAA.

•Designed and implemented React Native Web integration to enable consistent UI/UX across mobile and web platforms, facilitating component reuse and faster development cycles.

•Led architectural design and cross-team collaboration for mobile-first, multi-platform applications, ensuring optimal performance and responsiveness on iOS, Android, and web browsers.

•Provided technical leadership and mentoring for React Native teams on best practices for mobile-first UI/UX design and scalable architecture patterns.

•Implemented event-driven microservices using AWS SNS/SQS, with middleware-based processing pipelines in Node.js for asynchronous workflows.

•Automated mobile release workflows using Azure DevOps and Fastlane for continuous delivery to App Store and Play Store.

• Built responsive UIs using React.js, Redux, TypeScript, and CSS3, improving system usability and reducing frontend load times.

•Integrated Drools-based business rules engine to streamline claim validations and automate insurance policy checks across multiple payer systems, reducing processing time by 30%.

•Led DevOps initiatives, setting up and optimizing CI/CD pipelines using Azure DevOps, Jenkins, Docker, and Terraform, significantly accelerating release velocity.

•Deployed containerized applications using Kubernetes and AWS ECS, including autoscaling and traffic routing via load balancers.

•Integrated Spring Security and OAuth2 for HIPAA-compliant authentication and authorization across all layers.

•Optimized SQL queries in Oracle, supporting large healthcare datasets and near real-time transaction workflows.

• Created unit and integration test cases using JUnit, Mockito, and validated endpoints with Postman and SOAPUI.

•Continuously monitored applications with CloudWatch, Azure Monitor, and configured logging with Log4j and SLF4J.

• Created reusable AWS infrastructure using Terraform and CDK-like patterns to provision ECS services, IAM roles, and logging configurations.

•Built detailed data flow diagrams (DFDs) and entity-relationship diagrams (ERDs) to model service-to-database interactions for both SQL and NoSQL architectures.

•Played a key role in optimizing the UI/UX designers using React.js, CSS3, JavaScript, and jQuery, delivering highly interactive, responsive user interfaces for healthcare professionals.

Environment: Java 9/11, Spring Boot, Spring Cloud, Hibernate, Node.js, React.js, Redux, TypeScript, CSS3, GraphQL, Tailwind CSS, RESTful APIs, Spring Security, OAuth2, Oracle, draw.io, UML (Class, Sequence, Component), Data Flow Diagrams (DFDs), Entity-Relationship Diagrams (ERDs), Microservices Architecture Maps, CI/CD Pipeline Visuals, AWS ECS, Kubernetes, Docker, Azure DevOps, Jenkins, Terraform, Ansible, CloudWatch, Azure Monitor, JUnit, Mockito, Postman, SOAPUI, Log4j, SLF4J, Confluence, JIRA, IntelliJ IDEA, Eclipse, Visual Studio Code

Client: CVS, Minneapolis, MN MAR 2023 – AUG 2024

Role: Lead Full Stack Developer

Responsibilities:

•Created application on Spring Boot and used Multithreading to improve performance.

• Led full-stack implementation of pharmacy platforms using React.js, TypeScript, and Node.js, enabling seamless microservices-based integration on AWS and OpenShift.

•Designed and optimized accessible UI workflows, enhancing user experience through collaboration with product designers and Agile teams.

•Architected and implemented microservices based on 12-factor principles, deployed via AWS ECS and Red Hat OpenShift.

•Developed Node.js-based middleware services for API orchestration, event handling, and asynchronous data processing.

•Built Progressive Web Applications (PWAs) with React.js, Redux, TypeScript, and SASS, improving pharmacy staff workflows and UI responsiveness.

•Engineered secure, reusable Node.js middleware for pharmacy transactions with strong encryption and JWT-based access control.

• Deployed and monitored event-driven services leveraging AWS Lambda, SQS, and DynamoDB Streams to handle real-time inventory and notification systems.

• Implemented real-time event processing and messaging using Azure Event Hub and Azure Service Bus for inventory and notification systems.

•Wrote optimized SQL queries for managing pharmacy databases including Azure SQL and PostgreSQL.

•Built secure backend APIs integrated with Azure Cosmos DB and Blob Storage.

• Managed deployments with Azure DevOps Pipelines, Kubernetes, and Docker containers, ensuring CI/CD best practices.

•Created Designed and deployed mobile apps with React Native + Redux Toolkit for pharmacy inventory and staff scheduling.

• Designed and deployed hybrid mobile features using Ionic Framework, improving development speed and minimizing platform-specific code.

• Integrated Ionic with React Native modules and secure Java Core APIs using JWT-based authentication for pharmacy staff apps.

•Architected and integrated React Native Web components alongside React.js to deliver a unified, mobile-first user experience across web and mobile platforms.

•Led design and development of mobile-to-web responsive solutions, ensuring cross-platform code reuse and seamless functionality for pharmacy staff applications.

•Worked on PostgreSQL schema design for mobile-first use cases such as geo-tagged logs and notification queues.

•Performed performance testing and mobile profiling with React Native Debugger, React Profiler, and Jest.

•Developed UI wireframes and feature flow diagrams to align with product and UI/UX teams during sprint planning.

•Implemented and maintained CI/CD pipelines using Jenkins, Azure DevOps, Git, and Maven for automated build, test, and deploy cycles Designed and implemented a GenAI-powered chatbot using OpenAI API and LangChain, enabling context-aware healthcare responses and smart search functionality across internal documentation.

•Developed prompt chains and templates using Prompt Engineering techniques, monitored model performance using LLMOps tools, and optimized latency via caching strategies in Node.js middleware.

• Provisioned infrastructure using Terraform and Ansible, managing deployments across AWS services including Lambda, S3, and DynamoDB.

•Integrated and secured services with Spring Security and OAuth2, ensuring HIPAA-compliant access control across applications.

•Managed Oracle and SQL Server integrations using Spring Data JPA, writing optimized SQL for large-scale healthcare data.

•Utilized PostgreSQL and MongoDB for transactional and document-based layers, based on service-specific storage needs.

•Employed automated testing with Jest, Enzyme, React Testing Library, and integrated results into CI workflows for regression validation.

Environment: Java 9/11, Spring Boot, Spring Security, Spring Data JPA, Node.js, Express.js, React.js, Redux, TypeScript, SASS, GraphQL, REST APIs, SQL Server, Oracle, PostgreSQL, MongoDB, AWS (ECS, Lambda, S3, DynamoDB), Terraform, Ansible, Docker, Kubernetes, Jenkins, Azure DevOps, OpenShift, draw.io, UML, ERDs, DFDs, CI/CD Workflow Diagrams, API Flowcharts, Architecture Topologies, Frontend Wireframes, Postman, SOAPUI, Advanced REST Client, JUnit, React Testing Library, Jest, Enzyme, Storybook, Lighthouse, SonarQube, Git, GitHub, Bitbucket, IntelliJ IDEA, VS Code, Confluence, JIRA

Client: Best Buy, San Jose, CA (Remote) FEB 2020 – DEC 2022

Role: Sr. Full Stack Developer

Responsibilities:

•Involved in all phases of the Software development life cycle (SDLC) using Agile Methodology.

•Developed and deployed robust microservices-based applications using Spring Boot, React.js, and Node.js, modernizing retail systems into scalable, cloud-native platforms.

•Built responsive, high-performance UIs using React.js, Redux, JavaScript, Bootstrap, and SASS, improving user interaction and mobile responsiveness.

• Created backend APIs and middleware using Node.js and Express.js, handling real-time processing, validation, and API aggregation.

•Integrated GraphQL for dynamic data querying and reduced network payloads across large-scale UI modules

• Designed detailed draw.io diagrams for microservices interaction, Node.js event flow, and API orchestration, enhancing developer understanding and architecture reviews.

• Documented CI/CD pipeline flows, infrastructure topologies, and AWS ECS configurations using draw.io for release readiness and DevOps audits.

•Containerized services using Docker and orchestrated deployments using Kubernetes and OpenShift, improving environment consistency and auto-scaling.

• Modernized in-store device management tools using React Native, improving mobile support for operations teams.

• Built secure, scalable APIs using Spring Boot, integrated with Azure Cosmos DB, Azure SQL, and Blob Storage.

•Implemented high-throughput messaging with Azure Service Bus and optimized performance using Azure Redis Cache.

• Designed and documented multi-environment deployment flows (dev stage prod) in draw.io, reducing deployment errors and onboarding time.

•Created custom Node.js utility modules for input sanitization, request throttling, and middleware-level logging across services.

• Led sprint-level architecture review sessions, presenting draw.io-based visuals for new features, refactors, and system upgrades.

•Integrated third-party APIs and payment gateways securely into retail platforms using Node.js and TypeScript, enforcing PCI and data protection standards.

•Built a Drools-driven claims adjudication engine to dynamically validate member eligibility, copay, and plan configurations, handling thousands of transactions per day.

•Managed and versioned business logic rules in Red Hat BRMS, enabling non-technical stakeholders to update benefit rules without code changes or deployments.

•Integrated AWS Parameter Store and Secrets Manager into Node.js services to ensure secure API key and credential handling.

Environment: Java 8/9/11, Spring Boot, Hibernate, Node.js, Express.js, React.js, Redux, JavaScript, Bootstrap, SASS, GraphQL, REST APIs, Oracle, MySQL, MongoDB, AWS ECS, Docker, Kubernetes, OpenShift, Jenkins, Maven, draw.io, UML Diagrams, Microservices Interaction Diagrams, DevOps Pipeline Maps, Infrastructure Topologies, API Flow Visuals, CI/CD Workflows, Spring Security, JWT, Postman, JUnit, Mockito, Newman, Git.

Client: AT&T, Dallas, TX SEP 2017 – DEC 2019

Role: Full Stack Developer

Responsibilities:

Responsibilities:

•Developed full-stack solutions using Spring Boot, Angular 2+, and Node.js, converting legacy telecom platforms into agile, service-based systems.

•Built modular REST APIs and backend workflows using Spring Boot, integrated with Node.js services for event-driven logic and third-party interactions.

•Engineered secure, scalable UI components using Angular, TypeScript, and Bootstrap, improving UX and front-end architecture.

•Integrated asynchronous processing via Kafka and implemented Node.js logging middleware for real-time tracking and diagnostics. Built hybrid mobile interfaces using Ionic, improving in-store device support and enabling responsive UIs on both Android and iOS devices.

•Used Ionic’s component library alongside React.js to maintain a consistent brand look-and-feel across mobile and web views.

•Designed architecture visuals, including microservice routing, API gateway flow, and CI/CD structure, using draw.io, supporting system planning and team onboarding.

•Participated in mobile enablement of legacy systems using React Native POCs, working with PostgreSQL APIs for offline-first architecture.

•Managed CI/CD automation using Jenkins, Terraform, and AWS CloudFormation, deploying to ECS, Lambda, and S3 environments.

•Secured applications using Spring Security, OAuth2, and IAM role policies, ensuring compliance with telecom data regulations.

• Utilized CloudWatch, Log4j, and Sentry for monitoring, and resolved incidents via draw.io-rooted architecture breakdowns.

•Standardized draw.io templates for use across engineering teams, including CI/CD workflows, API lifecycle, and infrastructure layout diagrams.

•Participated in architecture guilds to align cross-team patterns, documenting standard flows via draw.io and Confluence.

Environment: Java 8, Spring Boot, Spring MVC, Kafka, Node.js, Express.js, Angular 2+, Bootstrap, TypeScript, REST APIs, OAuth2, JWT, Oracle, SQL Server, AWS ECS, Lambda, S3, Docker, Kubernetes, Jenkins, Terraform, AWS CloudFormation, draw.io, UML, Sequence Diagrams, Architecture Blueprints, CI/CD Flowcharts, Kubernetes Cluster Diagrams, Microservices Routing, CloudWatch, Log4j, Sentry, Confluence, JIRA, GitHub, IntelliJ, Eclipse, Visual Studio Code, Postman.

Client: Datamatics, Mumbai, IND Nov 2014 - FEB 2017

Role: Sr. Java Developer

Responsibilities:

•Involved in various phases of Software Development Life Cycle (SDLC), including requirement gathering, modeling, analysis, architecture design, prototyping, developing and testing.

•Built and maintained enterprise Java applications using Spring Boot, Hibernate, AngularJS, and Node.js, focusing on performance and modularity.

•Designed and integrated Node.js services for backend validation, middleware routing, and integration with messaging queues.

•Developed responsive UI components in AngularJS, optimized for desktop and mobile usage with REST-based data handling.

•Refactored monoliths into microservices and adopted domain-driven design (DDD), deploying them to OpenShift and Kubernetes clusters.

•Designed comprehensive draw.io diagrams including service-to-service communication, Node.js backend flows, and API contract mappings.

•Created visual documentation for ERDs, data flow diagrams, batch job sequences, and deployment pipelines, enabling faster sprint development and onboarding.

•Created DevOps architecture maps using draw.io, covering CI/CD automation, Docker containerization, and Ansible provisioning flows.

•Managed hybrid storage using Oracle, MySQL, and MongoDB, tailoring database choices to service requirements.

•Secured APIs using Spring Security and JWT, and tested backend layers using JMeter, JUnit, and Postman.

•Maintained version-controlled visual documentation in Confluence, used during release audits, design discussions, and code walkthroughs.

•Developed Node.js modules for handling backend form validation, JWT-based authentication, and asynchronous REST API integrations.

•Designed reusable RESTful endpoints in Spring Boot integrated with Node.js middleware, streamlining service communication between legacy and modern systems.

•Implemented Ionic-based hybrid mobile apps for internal workflow management tools, reducing mobile dev overhead by 40%.

•Worked closely with business analysts and architects to convert requirements into draw.io-based system diagrams, enabling clear sprint planning and feature mapping.

•Implemented automated builds using Maven, integrated unit and integration testing into Jenkins pipelines, and monitored quality with SonarQube.

• Developed custom AngularJS directives and filters to create modular UI components, improving code reuse and page-level performance.

Environment: Java 8, Spring Boot, Hibernate, AngularJS, Node.js, REST APIs, Oracle, MySQL, MongoDB, Docker, OpenShift, Kubernetes, Jenkins, Ansible, Maven, draw.io, UML (Class, Component), Entity-Relationship Diagrams (ERDs), Batch Processing Flows, Deployment Topologies, API Layer Visuals, CI/CD Diagrams, Spring Security, JWT, JMeter, JUnit, Postman, SonarQube, Confluence, JIRA, Eclipse, VS Code.

Client: Atom Technologies Limited, Mumbai, IND DEC 2012 – OCT 2014

Role: web developer

Responsibilities:

•Responsible for creating efficient design and developing User Interaction screens using HTML, CSS, JavaScript, jQuery AJAX, Angular js and JSON.

•Built and maintained enterprise-level applications using Java 8, Spring Boot, Hibernate, AngularJS, and Node.js, delivering scalable, modular systems across multiple domains.

• Designed and developed backend services using Spring Boot, with Node.js middleware for authentication, input validation, and external API communication.

•Created and consumed RESTful APIs, integrated with MySQL, Oracle, and MongoDB, based on service-specific requirements.

•Refactored monolithic applications into modular microservices, following Domain-Driven Design (DDD) principles and deploying to OpenShift and Kubernetes.

•Designed detailed draw.io architecture diagrams, covering microservices interaction, API flow, CI/CD processes, and backend orchestration.

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•Implemented containerized deployments using Docker, and managed configuration and automation with Ansible and Jenkins.

•Built and optimized CI/CD pipelines, integrating unit and integration tests using JUnit, Postman, and monitoring quality via SonarQube.

•Developed reusable AngularJS directives, components, and filters to streamline UI development and improve frontend maintainability.

Environment: HTML, CSS, Angular js, Spring Boot, AJAX, JavaScript, jQuery, Angular Js, Bootstrap, JSON, NODE Js, NPN, SPA, Photoshop, VS code.

Education:

Bachelors in computer science JNTUH, India, 2012

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