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I'm a Principal Software Engineer with over 10 years of experience building backend applications using Java and Spring Boot. Most of my work has been on enterprise products where reliability, scalability, and clean architecture matter more than simply getting features delivered. I've designed and developed microservices, REST APIs, authentication systems, and event-driven applications for industries including retail, logistics, construction, identity management, and enterprise SaaS. I enjoy working on complex backend problems, whether it's designing a new service, improving an existing system, or troubleshooting production issues. My core expertise includes: • Java (8, 11, 17, 21) • Spring Boot, Spring Security, Spring Data JPA • Microservices Architecture • REST APIs and third-party integrations • PostgreSQL, MongoDB, MySQL, Redis • Kafka and asynchronous messaging • Docker, Kubernetes • AWS (EC2, S3, RDS, IAM) • Keycloak and OAuth2/JWT authentication • GitHub Actions, GitLab CI/CD • Performance optimization and production support Over the years I've worked on systems serving thousands of users where stability, security, and maintainability were critical. My approach is to understand the business problem first and then build solutions that are easy to maintain and scale. I also have extensive experience reviewing code, mentoring developers, improving application performance, and resolving production issues. Whether it's optimizing database queries, reducing API response times, refactoring legacy code, or designing a new microservice, I focus on delivering solutions that work well in production. If you're looking for someone who can contribute beyond writing code, communicate clearly, and take ownership of backend development from design through deployment, I'd be happy to discuss your project.

Tired of unreliable servers, slow deployments, and infrastructure that breaks under pressure? I help businesses build rock-solid, automated Linux infrastructure that runs smoothly — so your team can focus on shipping product, not firefighting. With 4+ years of hands-on experience in Linux server administration, CI/CD pipeline automation, and container-based deployments, I bring deep technical skills combined with a proactive, ownership mindset. - Core Expertise - Linux Server Administration: Expert-level management of Debian, Ubuntu, and CentOS servers. I handle everything from initial provisioning and hardening to ongoing maintenance, performance tuning, and troubleshooting. Application Deployment & CI/CD: I design and automate deployment pipelines using GitHub Actions and GitLab CI, cutting deployment times and eliminating manual errors. Experienced deploying Node.js, Java (Tomcat), and Python applications. Containerization & Docker: I architect and manage multi-tier Docker environments, ensuring consistency from development to production. Skilled in Docker Compose for complex, multi-service setups. Web Servers & Reverse Proxy: Configuration and optimization of NGINX and Apache for high-traffic environments, including SSL/TLS termination, load balancing, and security hardening. Observability & Monitoring: Full-stack monitoring using Grafana, Collectd, and the ELK Stack (Elasticsearch, Logstash, Kibana) — giving you real-time visibility into logs, metrics, and alerts. Database Management: Administration of PostgreSQL and MySQL databases including backups, replication, and performance optimization. Infrastructure Automation: Configuration management and automated provisioning using Ansible to eliminate manual, repetitive work and enforce consistency. - Proven Results - -- Migrated a monolithic Java app to Docker: 80% faster deployments, seamless auto-scaling. -- Centralized logging for 20+ VPS with ELK Stack: 60% reduction in MTTR. -- Deployed container-level monitoring with Grafana + Collectd: proactively caught a critical memory leak before it caused downtime. Ready to build infrastructure that is fast, stable, and automated? Let's talk.

I am a Senior Software Engineer with over 9 years of industry experience. As a Fullstack Developer with a strong focus on backend development, I bring broad expertise across backend, frontend, DevOps, and system design. I am proficient in Java and experienced with Spring Boot, Spring Cloud, Spring AI, Hibernate, JUnit, Mockito, K6, Thymeleaf, React, Vue, Angular, Tailwind, Bootstrap, Docker, Kubernetes, Helm, GCP, AWS, Azure, and VPS. I have worked extensively with various servers and databases, including Postgres, MySQL, Oracle DB, SQL Server, MongoDB, Redis, Elasticsearch, Sqlite, BigQuery, Tomcat, Jetty, Undertow, Netty, Nginx, Apache, Node, ActiveMQ, RabbitMQ, Kafka, PubSub, Apollo, Keycloak, LDAP, Eureka, Consul, Vault, Sleuth, Minio, Alfresco, and Jenkins. My toolset also includes GitHub, GitLab, BitBucket, Jira, Redmine, Trello, Notion, Figma, SSH, TMux, Git, NVim, VSCode, Cursor, Windsurf, IntelliJ, DBeaver, Insomnia, and Chrome. The most common projects I work on include API services, web applications, and enterprise applications, leveraging architectures such as monolith, modulith, and microservices. I am experienced with multiple communication protocols, including REST, GraphQL, SOAP, gRPC, JSON-RPC, XML-RPC, WebSocket, Webhooks, Polling, and OpenAPI. I am open to discussions and project collaborations. Feel free to connect and hire me. Thanks & Warm Regards,

✅ 16,000+ hours and many projects over Upwork ✅ 10+ years of professional experience in full software development life cycle, i.e., software design, development, quality assurance, implementation, and support. ✅ Excellent working abilities in JAVA (J2EE/J2SE), Spring, Springboot, Struts2, Hibernate, JSP, Servlet, JavaScript, JQuery, REST, Angular, React, AWS (S3/Transcoding/Dynamo), NoSQL, HTML, CSS, XML, Android, PowerBuilder 7/9/ 10.2/ 11.5/ 12.5 ✅ Excellent knowledge of relational DBMS (Oracle, MySQL, SQL Server, Sybase) and No SQL(DynamoDB, MongoDB) ✅ Design and development experience in REST APIs ✅ Specialties Enterprise Resource Planning (Development, Implementation & Support) Application Software Development. Customized Application Development. Web Applications Development Systems Integration. ✅ Expertise: 1) JAVA (J2SE, J2EE, Struts, Hibernate) 2) REST API (Spring Boot, Jersey), Swagger 3) NoSQL Database (DynamoDB) 4) AWS (S3, Video Transcoding, DynamoDB, Cognito) 5) Angular, React, JavaScript, JQuery, HTML, AJAX, XML, CSS 6) PowerBuilder(7/8/9/10.5/11.5/12.5, 2019) 7) ERP (Development, Support & Implementation) 8) MySQL 9) ORACLE (9i, 10g, 11g) 10) SQL Server 11) Sybase 12) SQL/ PL SQL

Transforming Ideas into Scalable Digital Solutions As a Full Stack Developer & Solution Architect, I specialize in designing and delivering high-performance, secure, and scalable web applications tailored to business needs. From concept to deployment, I focus on clean architecture, efficiency, and long-term maintainability. Core Expertise Backend Development Java, Spring Boot, Microservices Architecture, Hibernate Python for automation, integrations, and data processing REST APIs, system integrations, and performance optimization Database design & tuning (MySQL, PostgreSQL, MongoDB) Frontend Development Modern UI development with ReactJS & Angular Responsive design using HTML5, CSS3, Bootstrap Advanced UI libraries: PrimeReact, PrimeAngular, Ant Design AI & Intelligent Integrations Integration with Claude AI and modern LLMs for smart automation AI-powered features like chatbots, content generation, and workflow enhancement DevOps & Tools Docker, CI/CD pipelines, Git (GitHub, GitLab) Cloud-ready solutions with scalable deployment strategies What You Can Expect Clean, production-ready code Scalable and future-proof architecture Strong focus on performance, security, and reliability Clear communication and on-time delivery Let’s build powerful, intelligent, and scalable solutions that drive real business impact. 🚀

I help startups and enterprises design, modernize, and scale Java Spring Boot applications with a focus on Microservices, Cloud, Enterprise Integrations, and AI-accelerated development (Claude Code, Cursor & Codex). 🏆 Top Rated Plus Freelancer ⭐ 100% Job Success 💰 $80K+ Earned ⏱️ 3,300+ Hours Worked 🚀 Expertise ✅ Java & Spring Boot Development ✅ REST APIs, Microservices & Spring Cloud ✅ Java 21 Migration & Legacy Application Modernization ✅ Cloud-Native Architecture & Migration (AWS & Microsoft Azure) ✅ Docker, CI/CD & DevOps ✅ Apache Kafka, RabbitMQ & Redis ✅ NetSuite, QuickBooks Online (QBO) & Third-Party API Integrations ✅ AI-Accelerated Development (Claude Code, Cursor & Codex) ✅ Performance Optimization & Database Tuning ✅ PostgreSQL • MySQL • MongoDB 💡 Recent Achievements 🚀 Migrated enterprise applications to Java 21 while maintaining production stability. ☁️ Led infrastructure migration from Virtual Machines to Microsoft Azure. ⚙️ Designed and delivered scalable Spring Boot Microservices for enterprise applications. 🔗 Integrated NetSuite, QuickBooks Online (QBO), and multiple third-party APIs. ⚡ Improved API response times by 60% through backend optimization. 💰 Reduced infrastructure costs by 50% by modernizing a monolithic application into microservices. 🤝 Why Work With Me? ✔ Clean, maintainable, production-ready code ✔ Strong communication and proactive collaboration ✔ Enterprise-grade architecture and scalable solutions ✔ Reliable delivery with a focus on long-term maintainability ✔ Modern development workflow using Claude Code and Cursor to accelerate delivery while maintaining high code quality Let's discuss your project and build a solution that scales with your business.