I am a seasoned Senior Full-Stack Developer with +7 years of experience, specializing in Java, Python, JavaScript, and C#. - My expertise encompasses full-stack development(Spring Boot, ASP.NET, React, Next, Angular, Django, Flask, WordPress) to deliver robust, scalable solutions. - And I have much experience with AI automation like AI agent, web scrapping & shopify bot. - I also have a strong background in cloud infrastructure(Azure, AWS, Kubernetes) and automation(Jenkins, GitHub Actions). Since now I have developed +20 successful projects in corporate environments and +10 projects for individuals.

Software Engineer with 4 years of experience specializing in backend development, customer engagement, and cross-team collaboration. Proven ability to bridge technical teams and clients, ensuring seamless project execution. Adept in Java, JavaFX, Rust, PostgreSQL, SQLite, SpringBoot, Google Cloud, and K8s with a strong focus on optimizing performance and delivering high-quality software solutions. Fluent in English, with experience working with offshore teams, delivering clear and effective communication across cultural boundaries.

Welcome to My Profile! I am a Software Developer, Software Architect, DevOps-AWS Engineer, and AI Strategist with 17+ years of experience delivering scalable, high-performance IT solutions across diverse domains using agile and DevOps practices. 🔍 Key Expertise ✅ Third-Party API Integrations – Proven experience integrating complex systems, including Amazon SP-API, for large-scale data operations ✅ AI & Automation – Proficient in integrating ChatGPT (3.5/4), custom NLP pipelines, AI-driven solutions, and automation accelerators like Cursor in My Coding for faster development cycles ✅ Highly Scalable System Architecture – Expertise in fault-tolerant design, high-availability systems, and microservices ✅ DevOps & Cloud Engineering – Strong command over AWS, Kubernetes, Docker, CI/CD pipelines, infrastructure as code, and system monitoring ✅ Data & Analytics – Real-time data streaming, analytics, and visualization using Power BI and other modern BI tools ✅ Business & Technology Strategy – Critical thinking applied to coding, system architecture, and business-focused problem solving 📈 Experience Snapshot 🔹 9+ Years – Full-Stack JavaScript (Node.js, Express.js, React.js, Vue.js) 🔹 6+ Years – DevOps Engineering (AWS, CI/CD, Docker, Kubernetes) 🔹 6+ Years – AWS (EKS, Lambda, S3, RDS, IAM, CloudFormation) 🔹 9+ Years – Java/J2EE (Spring Boot, Hibernate, Struts, REST/SOAP) 🔹 3+ Years – PHP Frameworks (Laravel, CodeIgniter, CakePHP) 🔹 2+ Years – Hybrid Mobile (React Native, Apache Cordova) 🛠 Technical Skills Languages & Frameworks: JavaScript, Node.js, React.js, Vue.js, Java, Spring Boot, PHP, Laravel DevOps & Cloud: AWS (EKS, EC2, Lambda, S3, RDS), Docker, Kubernetes, GitHub Actions, Jenkins Middleware & ORM: Sequelize, TypeORM, Hibernate AI & Automation: ChatGPT (3.5/4), NLP-based tools, Resume Parsing Engines, Cursor-enhanced coding Databases: MySQL, PostgreSQL, MongoDB, Oracle Frontend & UX: HTML5, CSS3, Bootstrap, jQuery, GSAP, Figma, Sketch Project Delivery: Agile-Scrum, Proposal Writing, Execution & Delivery Strategy API & Auth: REST, GraphQL, OAuth, JWT, Webhooks I am proactive, communicative, and outcome-oriented, with a strong focus on business development, strategic architecture, and delivering quality at speed. 📩 Let’s connect and discuss how I can help accelerate your product success with my technical and strategic expertise! Regards, Vijay Rajagopalan

🚀 Full-Stack Developer | SaaS Platforms | CRM Systems | Dashboards | AI Integrations I am a Full-Stack Developer with 9+ years of experience building scalable web applications, SaaS platforms, CRM systems, and analytics dashboards. I specialize in combining robust backend architectures, modern frontend frameworks, and AI-powered integrations to deliver high-performance and scalable solutions. 💻 Technical Expertise Full-Stack Development Backend: Node.js, NestJS, Laravel, PHP, Java, Spring Boot Frontend: React.js, Next.js, Vue.js, TypeScript RESTful & GraphQL API development Monolithic and Microservices architectures CRM & SaaS Development Custom CRM systems with role-based access, workflow automation, and analytics Multi-tenant SaaS platforms with subscription billing (Stripe, PayPal) Admin panels, dashboards, and reporting systems Dashboards & Data Analytics Real-time dashboards using Chart.js, Recharts, and D3.js KPI monitoring, reporting tools, and large dataset optimization AI / ML Integrations OpenAI, TensorFlow, HuggingFace, AWS AI services Chatbots, recommendation engines, and predictive analytics AI-powered automation and intelligent workflows Cloud & DevOps AWS (EC2, S3, RDS, Lambda, CloudFront) and GCP CI/CD pipelines with GitHub Actions, Jenkins, GitLab Docker, Kubernetes, Redis, and performance optimization 🛠 Technologies Java • Spring Boot • Microservices • MySQL • REST APIs React (Redux) • JavaScript • Bootstrap • Material UI Google Maps API • Facebook API Payment Gateways: Stripe, PayPal 📊 Industry Experience Healthcare • E-commerce • Tourism • Recruitment Systems • Food Delivery • CRM Platforms • Jewelry & Luxury Goods 💼 Professional Strengths ✔ Strong problem-solving and architecture design ✔ Clear understanding of business requirements ✔ Excellent communication and collaboration skills ✔ Proven ability to deliver scalable, production-ready solutions 🎯 Objective To contribute my technical expertise to innovative projects while continuously learning and delivering impactful digital solutions. Best Regards, Manoj Kumar Sharma

Highly motivated Full-Stack Web Development aspirant with a strong foundation in Java, C++, C, and Javascript. Currently honing my skills in the MERN Stack and am eager to contribute to a collaborative team. Built several projects utilizing the Discord API. Possesses experience managing and marketing projects, having spearheaded multiple NFT initiatives. Each project brought valuable problem-solving skills and insights into company operations. Proven ability to work independently while also thriving in collaborative environments. Eager to learn and continuously develop my programming expertise.

I'm a 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗪𝗲𝗯 & 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 with strong hands-on experience building scalable, secure, and high-performance applications across Android, iOS, Web, Tablet, Smartphone, and Smartwatch platforms. 𝗖𝗼𝗿𝗲 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: I specialize in 𝗯𝗮𝗰𝗸𝗲𝗻𝗱 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 using Java, Kotlin, Spring Framework, Spring Boot, Jakarta EE, and Hibernate for building scalable APIs, enterprise systems, and secure web applications. I also build 𝗰𝗿𝗼𝘀𝘀-𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺 𝗺𝗼𝗯𝗶𝗹𝗲 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 using Flutter with seamless backend integration for Android and iOS ecosystems. My technical stack includes: * 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀: Java, Core Java, Kotlin, Spring Framework, Spring Boot, Jakarta EE, Hibernate, REST API Development, API Integration, Microservices, Spring Security, Authentication & Authorization * 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: Flutter, Android App Development, iOS Development, Hybrid App Development, Tablet Apps, iPad App Development, Smartwatch Applications, Cross-Platform Mobile Apps * 𝗪𝗲𝗯 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: JavaScript, HTMX, Web Awesome, Responsive Web Applications, Modern UI Components * 𝗔𝗜 & 𝗦𝗺𝗮𝗿𝘁 𝗔𝗽𝗽 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻: AI App Development, FirebaseAI, ChatGPT Integration, OpenAI API Integration, Intelligent Features, Smart Recommendations, AI-powered User Experiences * 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲 & 𝗖𝗮𝗰𝗵𝗶𝗻𝗴: PostgreSQL, MySQL, Redis, Database Design, Query Optimization, High-Performance Data Handling * 𝗖𝗹𝗼𝘂𝗱 & 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀: Firebase, REST APIs, Third-Party API Integration, Push Notifications, Real-time Data Synchronization * 𝗨𝗜/𝗨𝗫 & 𝗔𝗽𝗽 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲: Mobile App Design, UX & UI Design, Responsive Interfaces, User-Centered Experiences, Performance Optimization * 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 & 𝗕𝗲𝘀𝘁 𝗣𝗿𝗮𝗰𝘁𝗶𝗰𝗲𝘀: Clean Architecture, Scalable Systems, Maintainable Code, Secure Development, Repository Pattern, Dependency Injection 𝗪𝗵𝗮𝘁 𝗦𝗲𝘁𝘀 𝗠𝗲 𝗔𝗽𝗮𝗿𝘁: 1️⃣ 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 - I develop complete web and mobile solutions from backend architecture and API development to polished Android/iOS applications with seamless synchronization and scalable infrastructure. 2️⃣ 𝗦𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗦𝘆𝘀𝘁𝗲𝗺𝘀 - Strong experience building secure and high-performance backend systems using Java, Kotlin, Spring Boot, and RESTful APIs with focus on scalability, maintainability, and production readiness. 3️⃣ 𝗠𝗼𝗱𝗲𝗿𝗻 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀 - I create responsive and efficient mobile apps for Android, iOS, Tablet, and Smartwatch devices using Flutter with optimized performance and intuitive UX/UI. 4️⃣ 𝗔𝗣𝗜 & 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻 𝗦𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘀𝘁 - Experienced in API Integration, third-party services, Firebase integration, payment systems, authentication systems, user profile creation, and secure user authentication workflows. 5️⃣ 𝗖𝗹𝗲𝗮𝗻 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 & 𝗤𝘂𝗮𝗹𝗶𝘁𝘆 𝗙𝗼𝗰𝘂𝘀 - I focus on writing clean, maintainable, and scalable code while optimizing application performance, security, responsiveness, and long-term maintainability. 𝗠𝘆 𝗔𝗽𝗽𝗿𝗼𝗮𝗰𝗵: I don’t just build applications, I create scalable digital products tailored to business goals and user needs. Every project I work on focuses on performance, security, clean architecture, and seamless user experience across web and mobile platforms. Whether you need a 𝗯𝗮𝗰𝗸𝗲𝗻𝗱 𝘀𝘆𝘀𝘁𝗲𝗺 built with Java/Kotlin & Spring Boot, a 𝗰𝗿𝗼𝘀𝘀-𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺 𝗺𝗼𝗯𝗶𝗹𝗲 𝗮𝗽𝗽 using Flutter, secure 𝗔𝗣𝗜 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 & 𝗶𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻, 𝗔𝗜-𝗽𝗼𝘄𝗲𝗿𝗲𝗱 features, Firebase services, authentication systems, or a complete web & mobile solution from scratch, I’m here to help deliver reliable, production-ready results. 𝗥𝗲𝗮𝗱𝘆 𝘁𝗼 𝗯𝘂𝗶𝗹𝗱 𝘀𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝘄𝗲𝗯 & 𝗺𝗼𝗯𝗶𝗹𝗲 𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀 𝗳𝗼𝗿 𝘆𝗼𝘂𝗿 𝗻𝗲𝘅𝘁 𝗽𝗿𝗼𝗷𝗲𝗰𝘁? 💬 Invite me to your project and let’s discuss the best technical approach for your idea.

Experienced Software Developer with 10+ years in the software industry. Proficient in requirement analysis, design, implementation, testing, and management of complex software applications. Committed to delivering enterprise level software solutions with exceptional performance driven by a passion for technical innovation, consistently creating world class software applications and products. My expertise spans across cloud infrastructure, containerization, continuous integration and deliver pipelines, and automated deployment solutions. I focus on delivering high-performance, scalable solutions, while collaborating closely with teams to foster technical innovations. ⚙️ Strong knowledge of Agile Software Development process (Scrum, Waterfall, Hybrid, Agile) and Code Review processes in projects of different scale. 🤝Team player, now how to successfully interact with architects, engineers, and product management to deliver user-friendly and visually appealing results. ⭐ Enjoy producing clean, well-written and highly efficient code on my projects. Also I’m convinced that good communication is a key for creating successful products. Key technologies: ✅ Java 8/11/15/17/21 ✅ Kotlin ✅ Python ✅ GoLang ✅ Spring Boot/Spring Cloud ✅ PostgreSQL / MySQL / MariaDB / Cassandra ✅ MongoDB /Redis ✅ Apache Kafka / RabbitMQ ✅ Keycloak/ Oauth2 / Auth0 / AWS Congito ✅ Maven / Gradle ✅ WebSocket / RSocket ✅ Docker / Podman ✅ Kubernetes ✅ Ansible ✅ Terraform ✅ CI/CD (GitLab CI, GitHub Actions) ✅ Shell Scripting ✅ RESTful APIs/GraphQL/RPC ✅ LLM / AI Agents / Claude Code Key Qualifications: ⭐ Expert understanding of any programming language and trending technology ⭐ Understand needs of company of any scale ⭐ Microservices development with even driven architecture ⭐ High-performance, maintainable and reusable code ⭐ Self-starter, hard worker, organized, attentive to details and a team player ⚙ Requirements Analysis & Solution Design ✅ Led requirement analysis sessions to capture and refine technical requirements, translating them into clear, actionable development objectives. ✅ Designed scalable backend architectures using Java and Spring Boot, implementing core application logic, business services, and data layers aligned with project requirements. ✅ Defined and established RESTful API standards to ensure seamless communication between services, enforcing best practices for reliability and performance. ⚙ Building Enterprise-Level Applications ✅ Developed and maintained complex backend services, ensuring high availability and fault tolerance, crucial for enterprise-level applications with strict uptime demands. ✅ Leveraged Spring Boot with frameworks like Spring Data JPA (with Hibernate and MyBatis) and QueryDSL to build efficient data access layers, improving data retrieval speeds and reducing latency. ⚙ Database Management & Optimization ✅ Designed relational and NoSQL database schemas using MySQL, PostgreSQL, MongoDB, and Redis, aligning data structures with application needs for optimal query performance and scalability. ✅ Conducted database performance tuning by implementing indexing, query optimization, and data sharding, improving system efficiency and reducing response times for high-traffic applications. ⭐ DevOps Integration & Deployment ✅ Orchestrated automated CI/CD pipelines using GitLab CI and GitHub Actions, achieving consistent and efficient deployment processes across development, staging, and production environments. ✅ Managed containerized application deployments on Docker and Kubernetes, improving scalability and simplifying resource management in cloud-hosted environments. ⚙ Performance Optimization & Troubleshooting ✅ Optimized backend applications for low latency and high throughput, using caching strategies with Redis and implementing efficient concurrency handling within Java. ✅ Developed comprehensive monitoring and alerting systems to proactively address and troubleshoot production issues, utilizing tools like Prometheus and Grafana to identify bottlenecks and optimize system performance. ⚙️ Key Projects: ⭐ High-Performance E-commerce Platform Backend ✅ Built a scalable backend for a high-traffic e-commerce platform, handling thousands of concurrent transactions with Java, Spring Boot, and PostgreSQL. ✅ Utilized Redis for caching to optimize data retrieval times and reduce server load, achieving a 30% improvement in page load times. ⭐ Microservices Migration for Legacy System ✅ Led the migration of a monolithic application to a Microservices architecture, improving system scalability and maintainability. ✅ Implemented an event-driven communication system using Apache Kafka for efficient inter-service communication, achieving asynchronous data processing with high reliability. ⭐ Real-Time Analytics Dashboard ✅ Developed backend services for a real-time analytics dashboard, enabling users to visualize key metrics and monitor live data.

Hey!👋 Let's get started on your project and make it a success. I'm Kisandas, a highly experienced Android developer with 6+ years of experience creating complex mobile applications. 📌My expertise lies in Android SDK, Java, Kotlin, and other associated technologies, and I have hands-on experience in Retail, Healthcare, Tracking, Real-estate, and Commercial Modern Applications development. 👉Android SDK 👉Java 👉Kotlin 👉Android Studio 👉RESTful APIs 👉Firebase services 👉Google Maps API 👉Google play service 👉Material Design 👉Push notifications 👉JSON/XML 👉SQLite, core database, PHP database 👉MVP/MVVM architecture 👉Retrofit 👉Jetpack 👉Social Networking Integration 👉Git/GitHub 👉Agile development 👉Debugging and troubleshooting 👉Cross-functional collaboration 👉Test-driven development (TDD) 👉Continuous integration/continuous deployment (CI/CD) In summary, I am a fast, reliable, and high-quality Android developer who can handle complex projects from design to implementation. 🤗 ✨I believe my expertise and experience make me a valuable asset to any team, and I look forward to discussing how I can contribute to your project. Let's work together to build amazing applications!🤝

With 4+ years of full-stack development experience, I collaborate with clients and teams on both backend and frontend work, from system design to implementation, deployment and maintenance. Happy to discuss how I can help. 𝗕𝗔𝗖𝗞𝗘𝗡𝗗 ▸ Java (Spring Boot, Microservices) ▸ Node.js (Express.js, NestJS with TypeScript) ▸ Python (Flask, FastAPI, Django) ▸ Go (Gin, gRPC) ▸ RESTful APIs, Microservices ▸ JWT, OAuth 2.0, SSO, Spring Security ▸ RabbitMQ, Kafka 𝗙𝗥𝗢𝗡𝗧𝗘𝗡𝗗 ▸ React, Angular, Next.js, Nuxt.js, TypeScript, JavaScript (ES6+), HTMX ▸ HTML5, CSS3, TailwindCSS, Material UI ▸ Redux, Context API, NgRx 𝗗𝗔𝗧𝗔𝗕𝗔𝗦𝗘𝗦 & 𝗗𝗔𝗧𝗔 𝗠𝗔𝗡𝗔𝗚𝗘𝗠𝗘𝗡𝗧 ▸ PostgreSQL, MySQL, MongoDB, AWS DynamoDB ▸ Firebase, Supabase ▸ Redis Cache, VectorDB (ChromaDB, Weaviate) ▸ Prisma, TypeORM, Hibernate, Drizzle, Flyway, Liquibase, Gorm 𝗗𝗘𝗩𝗢𝗣𝗦 & 𝗖𝗟𝗢𝗨𝗗 ▸ Docker, CI/CD (GitHub Actions, Jenkins) ▸ AWS (EC2, RDS, S3, Lambda), GCP, Azure, DigitalOcean, VPS, NGINX ▸ HTTPS (Certbot, Cloudflare, Let’s Encrypt) 𝗠𝗢𝗕𝗜𝗟𝗘 ▸ Flutter | Dart 𝗔𝗜 𝗧𝗢𝗢𝗟𝗦 ▸ Claude | Cursor | Copilot I work across backend and frontend to build fast, reliable systems. From API design and database tuning to cloud deployment and frontend integration, I focus on practical solutions that support real business needs. Python | Docker | PostgreSQL | Full Stack Development | Flask | MongoDB | Express | Django | React | Node | JavaScript | RESTful API | MERN Stack | Web Development | Frontend Development | Backend Development | Java | Spring Boot | Microservices | Go | Gin | gRPC | JWT | OAuth2 | CI/CD | AWS | GCP | DigitalOcean | Flutter | TailwindCSS | MaterialUI | Next | Nuxt | Vue | Redis | Vector Databases | Prisma | TypeORM | Hibernate | FastAPI | NestJS | API Development | Cloud Computing | DevOps | RabbitMQ | Kafka | LLM | n8n | Kotlin | HTMX | Cursor | Copilot | Cluade

Most ERPNext projects go over budget and under-deliver — not because the software is wrong, but because the implementation ignored how the business actually operates. That's the problem I've spent 13 years fixing. I build ERPNext implementations and Spring Boot backend systems for startups, SMEs, and enterprises that need things done right the first time. I'm Frappe Certified on ERPNext V15, and I've completed 38+ projects on Upwork with a 100% Job Success Score across $90,000+ in work — which means clients come back, and they refer others. 𝐖𝐡𝐞𝐫𝐞 𝐈 𝐚𝐝𝐝 𝐭𝐡𝐞 𝐦𝐨𝐬𝐭 𝐯𝐚𝐥𝐮𝐞: On the ERPNext side: end-to-end implementations, custom DocTypes, workflow automations, approval hierarchies, print formats, custom scripts, and REST API integrations with third-party tools. I understand the Frappe framework deeply enough to build what the standard modules can't. On the backend side: Spring Boot REST APIs and microservices with proper security (Spring Security, JWT, RBAC), JPA/Hibernate, clean architecture, and production-ready deployments. I've also handled Liferay 6.2/7.x portal development and Java + React/Angular enterprise portals for clients who needed both ERP and a custom frontend layer. What separates working with me from working with a developer who just executes tickets: I ask the two questions most developers skip before starting — what does your current process actually look like, and what does failure cost you? That conversation shapes everything and usually saves weeks of rework. Currently available. I reply within a few hours.