Vinay B

Senior Java React Developer at Amazon

Developed scalable Spring Boot microservices and React JS components for Alexa Shopping Payments, integrating with PostgreSQL, DynamoDB, and MongoDB. Applied Java 17 features and clean code practices. Secured APIs with OAuth2 and JWT. Cached data with Redis to reduce latency during high traffic. Utilized AWS Lambda and Kinesis for async workflows. Built interactive multimodal Alexa UIs using APL. Automated deployments with Jenkins and GitHub Actions. Monitored production with CloudWatch and Splunk. Collaborated closely with Alexa voice platform and UX teams to deliver frictionless shopping experiences.

Senior Java Developer at Express Scripts

Developed secure and scalable Spring Boot microservices for claims processing and eligibility. Integrated React dashboards with real-time data binding for healthcare agents. Secured endpoints with OAuth2, JWT, and Spring Security ensuring HIPAA compliance. Used PostgreSQL and MongoDB optimized for large datasets. Integrated external Change Healthcare APIs and EHR systems. Enabled async Kafka communication synchronized with frontend views. Managed deployments on Amazon EKS with CI/CD pipelines. Reduced MTTR via full-stack log correlation. Participated in Agile development and demos.

JAVA/J2EE Developer at TCS / New York Life Insurance

Developed Java-based microservices for policy administration, claims processing, and compliance. Integrated OpenAI models and LangChain for NLP features. Connected LLMs with ReactJS frontends for multimodal Alexa experiences. Integrated third-party financial APIs and managed batch schedulers for regulatory reporting. Used Oracle and MySQL for data management. Implemented role-based access with Spring Security and JWT. Tuned services for high throughput. Participated in Agile, code reviews, and production support during open enrollment periods.

Java Software Developer at HDFC Bank

Supported development of internal banking applications for customer onboarding, transactions, and KYC validation using Java, JSP, and Servlets. Wrote SQL and stored procedures for Oracle databases. Fixed bugs and implemented enhancements in legacy systems. Participated in testing and debugging with JUnit. Collaborated with QA teams during monthly release cycles. Managed JSP screens and forms for teller operations. Supported production deployments and monitored logs for stability.

Senior React Full Stack Developer at Amazon

Led development of modular React components for Alexa Shopping interfaces, including product search, cart, and checkout, with support for touch and voice interactions. Built backend REST APIs with Node.js/Express, integrating DynamoDB and PostgreSQL. Implemented JWT-based security, token refresh, and robust logging/observability. Deployed services to AWS EKS with blue-green deployments, hosted apps on S3/CloudFront, and optimized performance with lazy loading and code splitting. Mentored juniors and contributed to tooling improvements.

React Developer at Express Scripts

Developed full-stack healthcare applications, including a multi-step claims submission UI with Formik/Yup, real-time eligibility checks via third-party EHR APIs, and server-side filtering with MongoDB/PostgreSQL. Implemented JWT authentication, WebSocket updates, and AKS-based Docker deployments. Built real-time claim queues, shared UI components, and CI pipelines with Jenkins.

React Full Stack Developer at TCS / New York Life Insurance

Modernized internal tools for policy management, delivering reusable React screens and secure Node.js/Express backends. Worked with PostgreSQL and MongoDB, designed multi-step claim adjudication workflows, and implemented audit logging. Created Python scripts for policy audit reports and automated Azure-based data workflows; containerized services for Kubernetes deployment; developed secure file handling for KYC and policy documents.

Junior Software Developer at HDFC Bank (Internship)

Migrated legacy JSP tools to React frontends, built Express APIs for internal services, and implemented KYC-driven dynamic forms. Used React Context for state coordination, added Yup validations, crafted internal dashboards, and deployed apps via Docker on Linux servers.

Senior React Full Stack Developer at Amazon

Built modular React components for shopping flows (search, cart, checkout) with touch and voice support via Alexa; designed backend REST APIs with Node.js/Express connected to DynamoDB and PostgreSQL; deployed services on AWS via EKS and S3; implemented Redis caching; secured APIs with JWT and token refresh; used Formik/Yup for robust forms; authored unit/integration tests; improved Time-to-Interactive through lazy loading and code splitting.

React Developer at Express Scripts

Developed secure full-stack solutions for claims management and real-time eligibility checks; built multi-step claim submission with Formik/Yup; REST APIs with JWT-based authorization; real-time EHR eligibility via Axios with retry logic; real-time updates via WebSockets; containerized with Docker and deployed on AKS; created dashboards and implemented comprehensive frontend logging.

React Full Stack Developer at TCS / New York Life Insurance

Participated in digital modernization of internal tools; built reusable UI components and backend APIs (Express) supporting client onboarding, policy updates, and payment tracking; designed PostgreSQL schemas and MongoDB document storage; implemented policy configuration flows with dynamic UI rendering; wrote Python scripts for audit reports and Azure Batch automation; containerized services and managed deployments with Docker and Kubernetes; implemented audit logging and role-based route protection.

Junior Software Developer (Internship) at HDFC Bank

Modernized internal branch tools by migrating JSP-based interfaces to React; built Express APIs for customer onboarding, KYC checks, and basic transaction workflows; used React Context for cross-screen state management; implemented Yup-based client-side validations; built internal dashboards for managers to monitor approvals and KYC exceptions; Dockerized apps for internal deployment and managed env vars for dev/UAT/prod.

Senior React Full Stack Developer at Amazon

Developed modular, responsive React components for Alexa Shopping flows (product search, cart, checkout) with voice integration via Alexa Presentation Language. Designed backend REST APIs in Node.js/Express for carts, orders, and product metadata, integrating with DynamoDB and PostgreSQL. Implemented state management with Context API and Redux for multi-step processes; used Formik/Yup for form validations. Secured APIs with JWT, Axios interceptors, and role-based access. Deployed via AWS EKS and S3/CloudFront; leveraged Redis for caching and implemented tracing with correlation IDs. Wrote unit/integration tests with RTL and Mocha; optimized performance with lazy loading, Suspense, and code-splitting. Mentored juniors and collaborated with design/product teams; integrated analytics SDKs and Azure Key Vault for secret management.

React Developer at Express Scripts

Built a multi-step claim submission UI using React (Formik/Yup) and developed secure REST APIs with Node.js/Express for claims, eligibility, and status tracking. Implemented real-time eligibility checks via EHR API integrations with Axios retry logic; secured endpoints with JWT and RBAC. Managed global UI state with React Context API and containerized apps with Docker for AKS deployment. Implemented WebSocket updates for real-time claim status, created reusable UI components, and authored Python scripts for Azure SQL/Blob data workflows. Added logging with Winston and implemented CI/CD with Jenkins; collaborated closely with QA and business users.

React Full Stack Developer at TCS / New York Life Insurance

Modernized internal tools by delivering modular React screens for client details, policy updates, and beneficiary tracking; built secure Node.js/Express backends with PostgreSQL and MongoDB, and integrated third-party services (payments, verifications). Implemented policy configuration flows with dynamic fields, logging via Winston for auditability, and role-based navigation via React Router. Automated Python-based policy audit reports and data exports; deployed Kubernetes-based services on Azure, using Docker and Helm. Participated in design reviews and ensured accessibility and compliance through validated forms and robust error handling.

Junior Software Developer at HDFC Bank

Migrated legacy JSP applications to React frontends for customer onboarding, KYC checks, and account maintenance. Built Express APIs to interface with Oracle-based backend, using React Context for cross-screen state, and Yup for client-side validations. Created internal dashboards for managers with data tables and export capabilities; deployed Dockerized apps to internal Linux servers and maintained environment configurations. Wrote Jest/RTL tests for dynamic forms and supported monthly releases with issue tracing via Splunk.

Senior React Full Stack Developer at Amazon

Developed modular React components for shopping flows (search, cart, checkout) and implemented voice-enabled interfaces with Alexa Presentation Language. Designed backend REST APIs in Node.js/Express to manage cart sessions, orders, and product metadata, integrating with DynamoDB and PostgreSQL. Enhanced performance with Redis caching and improved observability with correlation IDs and Winston logging. Deployed services via GitHub Actions and AWS EKS with blue-green deployments.

React Developer at Express Scripts

Built a fast, secure React frontend and Node.js/Express backend for healthcare workflows, including multi-step claim submissions with Formik/Yup and real-time eligibility lookups via third-party EHR APIs. Implemented JWT-based auth, server-side validations, WebSocket updates, and Docker-based AKS deployments; automated pipelines with Jenkins.

React Full Stack Developer at TCS / New York Life Insurance

Developed modular React screens for policy management and backend Express APIs for client onboarding, policy updates, and payments. Designed PostgreSQL schemas for transactional data and MongoDB for unstructured documents; implemented audit logs with Winston and role-based access via React Router. Automated Python scripts for audits and Azure batch processing.

Junior Software Developer (Intern) at HDFC Bank

Built React interfaces replacing legacy JSP forms for onboarding and KYC checks, with Yup validations and Express APIs integrating with Oracle backend. Created internal dashboards for branch managers, containerized with Docker and deployed on internal servers; participated in architecture reviews and PR quality gates.

Senior React Full Stack Developer at Amazon

Developed modular React components for shopping flows (search, cart, checkout) with touch and voice support via Alexa Presentation Language; designed backend REST APIs in Node.js/Express for cart sessions, orders, and product metadata; implemented Redis caching; built Python data tooling; managed state with Context API and Redux; implemented JWT authentication; optimized performance with lazy loading and code-splitting; deployed via CI/CD pipelines on AWS EKS; hosted on S3/CloudFront; contributed to observability and testing; collaborated with Alexa payments and analytics teams.

React Developer at Express Scripts

Built a multi-step claim submission interface using React, Formik, and Yup with contextual validations and conditional fields; developed secure REST APIs in Node.js/Express for claims management; implemented JWT-based authentication and role-based access; integrated real-time eligibility checks with third-party EHR APIs via Axios with retry logic; added WebSocket-based updates for agent UI; containerized with Docker and deployed on AKS; implemented detailed logging and monitoring; wrote tests with RTL, Jest, Mocha; supported UAT and dashboards.

React Full Stack Developer at TCS / New York Life Insurance

Led digital modernization of internal insurance tools: built reusable React UI components and backend APIs in Express for policy updates, claims tracking, and onboarding; designed PostgreSQL schemas for transactional data and MongoDB for documents; integrated third-party payments and address verification; authored Python scripts for policy audits and Azure Batch automation; containerized services and deployed to Kubernetes clusters; implemented role-based navigation and comprehensive logging for compliance; collaborated with BAs and QA in Agile ceremonies.

Junior Software Developer at HDFC Bank

Migrated legacy JSP tools to React-based interfaces for customer onboarding and account updates; built Node.js + Express APIs to interact with Oracle backend via stored procedures; used React Context for multi-screen workflows; added Yup validations for KYC fields; deployed Dockerized apps to internal Linux servers; wrote Jest and RTL tests; supported monthly releases and incident troubleshooting; contributed to RESTful API restructuring and component architecture discussions.

Senior React Full Stack Developer at Amazon

Developed modular React components for shopping flows (product search, cart, and checkout) with touch and voice support via Alexa; designed backend REST APIs in Node.js/Express to manage cart sessions, orders, and product metadata using DynamoDB and PostgreSQL; implemented Redis caching to accelerate cart rendering during peak events; migrated legacy multi-service checkout to a Node.js microservices architecture with blue-green deployments and rollback support; secured APIs with JWT authentication and Axios interceptors, ensuring session integrity; deployed frontends and services to AWS (S3, CloudFront, Lambda@Edge, EKS) and optimized builds with Docker Compose and Helm; introduced correlation IDs for tracing and built lightweight monitoring hooks to improve observability; focused on performance tuning with lazy loading, code splitting, and React Suspense.

React Developer at Express Scripts

Built a multi-step claim submission interface using React, Formik, and Yup, with contextual validations, conditional fields, error hints, and real-time feedback to improve agent productivity; developed secure REST APIs in Node.js/Express for claims creation, retrieval, status updates, and rejection reasons; implemented JWT-based authentication and role-based access control; integrated real-time eligibility checks by connecting to third-party EHR APIs with Axios retry logic and server-side validation; used React Context API to share state across search results, active claim details, and batch status screens; containerized frontend and backend with Docker and deployed on Azure Kubernetes Service via Jenkins pipelines; added WebSocket-based updates for claim status changes and implemented server-side pagination for real-time queues.

React Full Stack Developer at TCS / New York Life Insurance

Developed modular frontend screens in React for client details, policy adjustments, and beneficiary tracking, using custom hooks and shared components; built secure Node.js/Express backends for onboarding, policy renewal, and payment tracking with robust validations and structured logging; worked with PostgreSQL for transactional data and MongoDB for unstructured documents; wrote Python scripts for audit reports and exporting transaction histories to CSV/Excel, scheduling via Azure Batch and distributing outputs through Azure Storage; integrated third-party services via Axios and designed claim adjudication workflows with real-time field validations; containerized services with Docker and deployed to Kubernetes; contributed to architecture discussions and cross-team reviews to improve component reuse and service patterns.

Junior Software Developer at HDFC Bank (Internship)

Migrated legacy JSP-based internal tools to React and built lightweight Express APIs for internal services related to account maintenance, KYC checks, and basic transaction workflows; used React Context API to coordinate workflows across screens and added Yup validations to enforce data quality; built internal dashboards for branch managers with data tables, filters, and exports; deployed Dockerized apps to internal Linux servers and managed environment variables for dev/UAT/prod; wrote Jest tests for forms and backend validations; supported monthly releases and issue tracing with Splunk; contributed to RESTful API design and data migrations.

Senior Java React Developer at Amazon

Full stack development for Alexa Shopping Payments featuring scalable Spring Boot microservices, secure RESTful APIs using OAuth2/JWT, front-end React interfaces, and DynamoDB/PostgreSQL-backed data stores. Implemented real-time dashboards, integration with AWS services (Lambda, Kinesis), and observability with CloudWatch, Splunk, and Prometheus. Led migration from monoliths to microservices and improved end-to-end performance and reliability with circuit breakers, retries, and TTL-managed caches.

Senior Java Developer at Express Scripts

Developed secure Spring Boot microservices for claims processing, eligibility checks, and provider services. Built React dashboards with real-time data binding, implemented OAuth2/JWT security, and integrated with PostgreSQL and MongoDB. Led backend/frontend alignment, Formik-based validation, and Kafka-based event propagation with UI polling for timely feedback.

JAVA/J2EE Developer at TCS / Reserve Bank

Java/J2EE backend development for policy administration, claims processing, and regulatory-compliant workflows. Built Spring Boot microservices, integrated OpenAI LangChain-based NLP modules, and connected with Oracle/MySQL databases. Implemented batch processing, Kafka event streaming, and secure authentication with JWT/Spring Security.