Vivek V.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Top-Rated Full Stack Developer | Java Spring Boot | Microservices Architecture | AWS | React/Redux | iOS & Android | Ecommerce | 16+ Years | 100% Job Success - 16+ years of experience - 90+ Upwork projects completed - 88 five-star ratings - 100% Job Success Score If you’re looking for a reliable, skilled, and highly responsive Full Stack Developer, Mobile App Expert, Cloud Engineer, or Microservices Architect, I can help turn your concept into a production-ready, scalable, and secure solution. I have delivered 400+ successful projects, including large-scale Ecommerce, SaaS, mobile, and cloud-native platforms. My core strengths include Java/Spring Boot microservices, AWS cloud architecture, React/Redux front-end engineering, and native iOS & Android development. Core Technical Expertise - Microservices Architecture & Implementation - Domain-Driven Design (DDD) - Event-driven architectures - REST & GraphQL APIs - API Gateway, rate-limiting & throttling - Service discovery (Eureka/Consul) - Resilience & fault tolerance (Resilience4j) - Kafka / RabbitMQ event streaming - Containerization with Docker, Kubernetes, ECS/EKS - Centralized logging (ELK) & monitoring (Prometheus/Grafana) - Automated CI/CD pipelines - Backend Development — Java & Spring Boot - Spring Boot 2.x/3.x, Spring Cloud - Multi-tenant SaaS development - JPA/Hibernate, PostgreSQL, MySQL - OAuth2, JWT, Keycloak authentication - Redis, Hazelcast caching layers - High-performance API development - Clean architecture, SOLID principles - AWS Cloud Engineering - EC2, ECS, EKS, Lambda - S3, API Gateway, CloudFront, Route53 - RDS, DynamoDB, Aurora - IAM, VPC, monitoring & observability - Auto-scaling, load balancing - Serverless application design - Frontend Development — React & Redux - React Hooks, Redux Toolkit, Thunk/Saga - Modular & component-driven UI architecture - Responsive UI with Material UI, Bootstrap, Tailwind - SPA development with routing & guarded routes - High-performance API integration with microservices - State optimization & frontend performance tuning - Native Mobile Apps (iOS & Android) - Swift, Objective-C, Kotlin, Java - Firebase, push notifications, analytics - In-app purchases, secure storage - Fast, seamless backend integration Domain Expertise & Projects Delivered - Ecommerce Platforms - Multi-vendor marketplaces - Order, cart, checkout flows - Payment gateways (Stripe, PayPal, etc.) - Product catalogs, inventory, delivery modules - B2C, B2B, and marketplace models - Cryptocurrency platforms - Salesforce automation systems - Learning Management Systems (LMS) - School/college automation - Restaurant & food ordering apps - On-demand service booking - Social & dating apps (Tinder/Paktor/Skout clones) - Ride-hailing apps (Uber/Lyft clones) - Marketplace platforms (Handy/TaskRabbit style) - Business directories (Yelp/YellowPages style) - High-budget poker & multiplayer games - Fitness & wellness apps - Messaging & chat apps - Travel booking systems - News, utilities & productivity apps What You Can Expect? - Transparent, responsive communication - Clean, scalable, and secure engineering - Production-grade architecture - AWS-native, high-availability deployments - Pixel-perfect UI & excellent UX - End-to-end delivery & post-launch support - Service until you say: “This is awesome.”