Deepak M.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.

I help startups, SaaS companies, and enterprise teams build high-performance backend systems using Java, Spring Boot, Microservices, Kafka, AWS, and cloud-native architectures. With 13+ years of experience, I have built and maintained enterprise-grade applications across Finance, Healthcare, SaaS, Telecom, and Enterprise platforms. My focus is on backend architectures that remain reliable, secure, and scalable as your product and user base grow. I leverage AI tools like GitHub Copilot, Cursor, ChatGPT, and Claude into my daily engineering workflow to accelerate delivery, improve code quality, and make smarter architecture decisions — without ever compromising on system stability or security. Here's How I Can Help: · Design and develop scalable Java backend applications (Java 8 through Java 21) · Support Angular, React.js, and Vue.js frontends for complete full-stack delivery · Build and secure REST APIs and SOAP Web Services using Spring Boot and Spring Security · Architect Microservices systems using Spring Cloud and API Gateways · Implement event-driven architectures using Apache Kafka, RabbitMQ, and ActiveMQ · Integrate third-party APIs, enterprise systems, and IBM AS400/iSeries platforms · Migrate legacy AS400 and monolithic systems to modern Java and Spring Boot microservices · Design and optimize relational and NoSQL databases for performance at scale · Deploy cloud-native applications on AWS and Azure AI-Assisted Development: GitHub Copilot and Cursor for intelligent code completion, real-time suggestions, and automated refactoring across Java and Spring Boot codebases. ChatGPT and Claude for architecture planning, complex problem-solving, code reviews, and technical documentation. Backend Development: Languages: Java (8, 11, 17, 21), J2EE Core Java: OOP, Collections, Streams, Lambdas, Multithreading, Concurrency, Exception Handling, JVM Internals Frameworks: Spring Boot, Spring MVC, Spring Security, Spring Data JPA, Spring Cloud, Spring Batch, Spring OAuth2, Spring Web Services ORM and Persistence: Hibernate, JPA, JDBC, Redis and Ehcache for caching Web Services: RESTful APIs (JAX-RS), SOAP Web Services (JAX-WS), XML-RPC Microservices Architecture: Spring Cloud, Netflix OSS (Eureka, Consul, Ribbon, Hystrix), Resilience4j, API Gateways (Zuul, Spring Cloud Gateway, Kong), Spring Cloud Config for centralized configuration, OAuth2, JWT, Keycloak for secure inter-service communication Messaging and Event-Driven Systems: Apache Kafka, RabbitMQ, ActiveMQ for high-throughput distributed messaging and event-driven architecture Frontend Development: Frameworks: React.js, Angular, Vue.js Web Technologies: HTML5, CSS3, Bootstrap, SASS, Tailwind CSS JavaScript: JavaScript, jQuery, AJAX Databases: Relational & NoSQL: MySQL, PostgreSQL, MS SQL Server, Oracle, DB2, MongoDB, DynamoDB, Redis Data warehousing & optimization: Amazon Redshift with schema design, query optimization, and performance tuning across relational and NoSQL systems Cloud, DevOps, and Tools: Cloud Platforms: AWS (EC2, Lambda, API Gateway, S3, RDS, DynamoDB, CloudWatch, IAM), Azure (Virtual Machines, Blob Storage, Functions, Service Bus, App Service, Azure AD) CI/CD, Containerization and Orchestration: Jenkins, GitHub Actions, Azure DevOps, Maven, Gradle, Docker, Kubernetes (EKS, AKS) Monitoring and Observability: ELK Stack (Elasticsearch, Logstash, Kibana), Grafana, Prometheus, Splunk, CloudWatch Logs Integration, Middleware, and Legacy Modernization: Hands‑on experience integrating with IBM AS400/iSeries systems and executing end‑to‑end AS400 to Java migrations. Legacy business logic transformed into modern Java and Spring Boot applications with improved scalability, maintainability, and cloud readiness. Expertise includes API enablement, microservices‑based re‑platforming, and legacy modernization initiatives that reduce operational costs and technical debt. Whether you need backend development, legacy modernization, REST API scaling, AS400 migration, Kafka event‑driven architecture, or Spring Boot optimization, send me your project details — I’ll outline my approach and give you an honest fit assessment. #Java #JavaDeveloper #Java21 #SpringBoot #SpringCloud #SpringSecurity #SpringBatch #Microservices #DistributedSystems #EventDrivenArchitecture #Hibernate #JPA #RESTAPI #SOAP #Kafka #RabbitMQ #ActiveMQ #Docker #Kubernetes #EKS #AKS #AWS #Azure #MySQL #PostgreSQL #MongoDB #DynamoDB #Redshift #Redis #CICD #Jenkins #GitHubActions #DevOps #OAuth2 #JWT #ReactJS #Angular #VueJS #ELKStack #Grafana #Prometheus #Splunk #CloudWatch #LegacyModernization #BackendDevelopment #CleanArchitecture #ScalableSystems #APIIntegration #EnterpriseJava #GitHubCopilot #Claude #ChatGPT #Cursor #AIAssistedDevelopment #AS400 #IBMiSeries #AS400Migration #AS400Integration #AS400Modernization #FullStackDeveloper #FullStackEngineering #FrontendDevelopment #BackendDeveloper #WebDevelopment #SoftwareEngineering #EnterpriseApplications #CloudNativeDevelopment