👋 Hello! I'm Ahmed, a passionate Full Stack Developer with expertise in Java, SQL/NoSQL databases, JavaScript, and Angular. I thrive on creating seamless and dynamic web solutions, with a solid understanding of Core Java components, JavaFX, and extensive experience in web development using the Spring Framework, Spring Boot, JPA, and Hibernate. 🔧 What I bring to the table: 💻 Java Programming 🌱 Spring Framework & Spring Security ⚙️ Hibernate & JPA 🧪 JUnit 5 🐘 PostgreSQL & MySQL 🗂️ NoSQL Databases 🛠️ JavaScript & TypeScript 🎨 Angular, HTML, CSS3, SCSS 🔍 I specialize in building full REST API applications and crafting user-friendly, interactive interfaces. My goal is to not just meet your expectations but exceed them with punctuality, creativity, and dedication to delivering high-quality solutions. 💡 Ready to take your project to the next level? Let’s collaborate and create something amazing together! 🚀 Looking forward to hearing from you soon! Best Regards, Ahmed I.

Mastery of software architecture and software development cycles. In-depth knowledge of the Java / JEE platform and the development of web applications. Mastery of JEE, Java, SOAP & REST web services, JPA, Angular,AngularJS, HTML5, Javascript, CSS 3, Bootstrap, Angular, Spring Boot,SpringBatch. Mastery of Docker , Docker Swarm , Microsevice architecture. Mastery of Java play framework. Mastery of framework Spring. Good knowledge of continuous integration implementation (Gradle,Maven, Svn, Git, Jenkins, Gitlab-CI). Good knowledge of TOMCAT, JBOSS. Good knowledge of database management systems: MySQL, ORACLE, POSTGRESQL. Quick learning ability of new languages and APIs. Experience in agile methodology. Ability to work independently and in a team.

𝗡𝗲𝗲𝗱 𝗮 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 𝘄𝗵𝗼 𝗰𝗮𝗻 𝗯𝘂𝗶𝗹𝗱 𝗰𝗹𝗲𝗮𝗻, 𝘀𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝘄𝗲𝗯 𝗮𝗽𝗽𝘀? I help businesses build reliable full stack web applications using Java Spring Boot, Angular, React, Python, NestJS, and TypeScript. My work focuses on clean backend architecture, secure APIs, responsive frontend interfaces, database structure, and scalable systems that are easy to maintain long-term. 𝗪𝗵𝗮𝘁 𝗜 𝗰𝗮𝗻 𝗵𝗲𝗹𝗽 𝘄𝗶𝘁𝗵: • Full Stack Web Application Development • Java Spring Boot Backend Development • Angular and React Frontend Development • Python and NestJS Backend Systems • REST API Development and Integration • MySQL and PostgreSQL Database Design • Authentication, JWT, and Role-Based Access • Admin Panels, Dashboards, and SaaS Platforms • AWS Deployment and Docker Environments • GoHighLevel CRM Setup and Automation Support 𝗖𝗼𝗿𝗲 𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸: Backend: Java Spring Boot, NestJS, Python, TypeScript, REST APIs, MySQL, PostgreSQL, JWT Frontend: Angular, React, JavaScript, TypeScript, Responsive UI, Single Page Applications Infrastructure: AWS, Docker, cloud deployment, scalable application setup Automation: GoHighLevel, CRM setup, workflow automation, funnel integrations 𝗛𝗼𝘄 𝗜 𝘄𝗼𝗿𝗸: • Clean, maintainable code • Clear and proactive communication • Scalable architecture, not quick patches • Frontend and backend built with long-term product growth in mind 𝗥𝗲𝗮𝗱𝘆 𝘁𝗼 𝗯𝘂𝗶𝗹𝗱 𝗮 𝗳𝘂𝗹𝗹 𝘀𝘁𝗮𝗰𝗸 𝘄𝗲𝗯 𝗮𝗽𝗽 𝘁𝗵𝗮𝘁 𝘄𝗼𝗿𝗸𝘀 𝗿𝗲𝗹𝗶𝗮𝗯𝗹𝘆? Send me your project details and I’ll help you build a clean, scalable application with the right backend, frontend, APIs, database, deployment setup, and automation support. 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀: Full Stack Developer, Java Spring Boot Developer, Spring Boot, Java Developer, Angular Developer, React Developer, Python Developer, NestJS Developer, TypeScript Developer, REST API Development, API Integration, Backend Development, Frontend Development, Web Application Development, SaaS Development, MySQL, PostgreSQL, AWS Deployment, Docker, JWT Authentication, Admin Dashboard, CRM Automation, GoHighLevel, GHL

I am a skilled core developer with six years of experience in Java and front-end development. My expertise spans multiple industries, including technology and healthcare, where I've successfully delivered complex applications. I specialize in architecting scalable solutions that enhance performance and user experience. Throughout my career, I have contributed to various projects, collaborating with teams to overcome challenges and drive innovation. Whether it’s fine-tuning existing systems or building new features from scratch, I ensure high-quality results tailored to client needs. If you're looking for a reliable developer who can translate your vision into functional, user-friendly applications, let's discuss how I can add value to your project.

Senior Java/Kotlin Engineer with 7+ years delivering production-grade systems at EPAM and Moscow Exchange including a 40% API response improvement, Kafka event processing under 200ms, and growing unit test coverage from 45% to 90%. I specialize in building high-performance, cloud-native backends using Java 21, Spring Boot, and AWS and increasingly integrating AI/LLM capabilities (LangChain, RAG, Vector Search) into enterprise systems. What I bring to your project: — Backend architecture: Spring Boot, Spring Cloud, Spring Microservices, gRPC, Kafka, RabbitMQ — Cloud & DevOps: AWS (EC2, S3, Kinesis, CloudWatch), Docker, Kubernetes, Terraform, GitLab CI/CD — AI integration: LangChain, RAG pipelines, Vector Search, OpenAI/Claude APIs — Frontend: Angular 17, ReactJS, Thymeleaf (full-stack delivery when needed) — Databases: PostgreSQL, MongoDB, OracleDB, Redis, Elasticsearch I've worked across fintech (Moscow Exchange clearing systems, trade processing), healthcare enterprise (EPIC integrations), and commercial SaaS (EPAM) industries where reliability and security are non-negotiable. I follow OWASP security standards, write tests first (JUnit, Mockito, Rest Assured), lead code reviews, and communicate clearly in English throughout the project. If you need a senior engineer who can take a feature from architecture to production — independently and reliably let's talk.

Build Scalable & Secure Back-End Systems with Java I’m a Senior Java Back-End Engineer with 10+ years of experience helping companies design and deliver SaaS platforms, APIs, and enterprise-grade web applications. Clients hire me to: Develop scalable microservices with Java & Spring Boot Build and integrate REST APIs for web and mobile apps Ensure reliability with CI/CD pipelines, cloud deployment, and automated testing Optimize databases (MySQL, PostgreSQL, OracleDB) for performance & security Collaborate in Agile teams to deliver on time and within scope My goal: Deliver clean, maintainable code and back-end systems that are fast, reliable, and built to scale. Whether you need a long-term developer to grow your SaaS product or a specialist to solve a complex API/database challenge, I can help. Tech Highlights Languages & Frameworks: Java, Spring Boot, Hibernate Architecture: Microservices, RESTful APIs, SaaS Databases: MySQL, PostgreSQL, OracleDB Tools & Processes: Git, CI/CD, Agile, Jira Cloud & Deployment: Docker, CI/CD pipelines, cloud integration Let’s discuss your project and make it a success.

⚡ If your system needs to scale, stay secure, and actually work under real-world pressure I’m the person you bring in. I’m a Senior Full Stack Architect with 10+ years of experience designing and building enterprise-grade platforms, microservices ecosystems, and AI-powered applications. I don’t just build features I design systems that don’t break. 💼 What I Help You Achieve Most clients come to me when they face: • A system that’s slowing down or failing at scale • Poor architecture decisions causing long-term issues • Need to integrate AI into real business workflows • Backend that works… but isn’t reliable or secure • A product that needs to go from MVP → production properly 👉 I fix these by building clean, scalable, and production-ready systems from the ground up (or improving existing ones). 🧠 My Core Expertise 🔹 Backend & Architecture (My Strongest Area) • Java (Spring Boot, Spring Security, JPA, Hibernate) • Microservices & event-driven systems • API design & system integrations • Performance optimization & reliability engineering 🔹 Full Stack Development • Angular, React, Next.js • Scalable frontend architecture • Clean, maintainable UI systems 🔹 AI Integration (Where I Add Extra Value) • OpenAI, LangChain, LlamaIndex • RAG pipelines & semantic search • AI agents & workflow automation • Document intelligence systems 👉 I don’t just add AI I integrate it in a way that actually improves business outcomes. ☁️ Cloud & DevOps • AWS architecture & deployment • Docker & CI/CD pipelines • Scalable, distributed systems 🏆 Proven Track Record ✔ 100+ systems delivered (enterprise + startups) ✔ 15,000+ hours of real-world development ✔ Long-term client relationships & repeat work 💡 How I Work (This Is Why Clients Stay) • I think in architecture, not just code • I focus on long-term scalability, not quick hacks • I communicate clearly — no confusion, no guessing • I take ownership from planning → deployment • I build systems that are easy to maintain and extend 🎯 When You Should Hire Me ✅ You need a serious engineer, not just a coder ✅ Your system must be stable, secure, and scalable ✅ You want to integrate AI properly (not just hype) ✅ You care about long-term quality over shortcuts 🚫 Not a Good Fit If ❌ You’re looking for the cheapest option ❌ You need quick fixes without proper architecture ❌ You don’t value clean, maintainable code 🚀 Let’s Build Something That Lasts If you’re building a product where performance, scalability, and reliability actually matter Send me a message with your project details. I’ll quickly tell you the best way to approach it.

🥇TOP RATED PLUS | 👨🏻‍💻 4000+ WORKING HOURS 💼 7+ YEARS EXPERIENCE | 🏆100% Job Success ⭐️⭐️⭐️⭐️⭐️ "I had the pleasure of managing Dasun (Era), a senior software engineer, on our recent project, and I must say, it was a fantastic experience. Era's code was top-notch, well-structured, and he always delivered more than we expected. What really stood out was Era's communication skills; he kept the team in the loop, asked smart questions, and had great suggestions. Working with Era was a breeze - he was professional, met deadlines, and handled challenges with ease. I can't wait to hire him again ASAP; he's a star in our team! ⭐️⭐️⭐️⭐️⭐️"I was very happy with the work from Era on a spring web flux project. He produced code that was excellent quality and proactively fixed issues and made improvements as he worked through the tasks." I am a seasoned software engineer with over 7 years of experience, specialising in Java, Spring Boot, and REST API development. My passion lies in tackling new challenges and establishing long-lasting collaborations that drive innovation and excellence in every project. Technical Expertise: ✅ Proficient in Java, including Java 8, Java 11, Java 17. ✅ Expertise in developing web applications in the Banking and Financial domain for over the 5 years. ✅ Backend development experience with Spring Boot Spring webflux, REST API development, application security, scalability, and proficiency in Spring Data JPA, Hibernate, Spring Cloud, and Spring Security. ✅ Proficiency in Microservice design pattern with Clean code principals and Domain Driven Design and inter service async communication with Event-Driven architecture, CQRS (Command Query Responsibility Segregation), SAGA patterns, Load balancing, Config management, and Gateway implementation. ✅ Knowledge of application security best practices, including OAuth 2 implementation, JWT token-based authentication, and authorization. ✅ Experience in Test-Driven Development (TDD) and unit testing using JUnit 5 and Mockito, as well as snapshot testing with Jest and Enzyme. ✅ Familiarity with both relational and NoSQL databases, including MySQL, Oracle, PostgreSQL, MongoDB, and Amazon QLDB. ✅ Hands-on experience with AWS, including designing and implementing highly scalable and secure infrastructure plans, application deployment, and CI/CD pipelines using AWS services like CodeCommit. Proficiency in migrating on-premises applications to the AWS cloud. ✅ Expertise in DevOps practices, including CI/CD with Jenkins and GitHub Actions, containerization using Docker, terraform script development, Ansible, Container Orchestration with Kubernetes clusters and Amazon EKS (Elastic Kubernetes Service), and version control using Git. ✅ Experience in setting up monitoring and logging solutions like Prometheus, Grafana, ELK (Elasticsearch, Logstash, Kibana), or AWS CloudWatch to ensure the health and performance of applications. ✅ Understanding of distributed system concepts, including message brokers like Apache Kafka or RabbitMQ, and the implementation of distributed transactions. ✅ Expertise in optimising application performance, including profiling, caching strategies, and database query optimisation. ✅ Proficiency in modern Software Development Life Cycle (SDLC) methodologies, including Agile (SCRUM), and tools such as Jira, Confluence, and SonarQube. ✅ Mastery of Object-Oriented Programming (OOP) concepts, SOLID principles, and Data Structures & Algorithms. I have a proven track record of delivering exceptional results for my clients, including: ☑ Boosting client revenue by 30% through targeted web application improvements. ☑ Increasing code quality by 80% using best practices and the Boy Scout Rule. ☑ Mentoring junior developers to enhance their Java skills and problem-solving abilities. I am confident that my strong technical background and commitment to excellence will make me an asset to your team. If you would like to discuss how I can contribute to your next project, please don't hesitate to reach out. Thank you for considering my application, and I look forward to speaking with you soon. Best regards, Dasun.

I build enterprise Java, Angular, and Stripe fintech systems 𝟑-𝟓𝐱 𝐟𝐚𝐬𝐭𝐞𝐫 using AI/𝐂𝐥𝐚𝐮𝐝𝐞 𝐂𝐨𝐝𝐞 - Top Rated developer with $100K+ earnings. I specialize in Java/Spring Boot, Angular, and React for enterprise applications, fintech platforms, and payment integrations (Stripe Connect). I use Claude Code (AI-assisted development) to deliver enterprise-quality code 𝟑-𝟓𝐱 𝐟𝐚𝐬𝐭𝐞𝐫 than traditional development, without sacrificing code quality or test coverage. 𝐖𝐨𝐫𝐤𝐢𝐧𝐠 𝐰𝐢𝐭𝐡 𝐦𝐞, 𝐲𝐨𝐮 𝐰𝐢𝐥𝐥: - Get fast response and clear communication - Beautiful and reusable code, intuitive and functional interfaces, applying all best practices - A developer familiar with DevOps practices and CI/CD pipelines - Developer who leverages AI/Claude code to deliver faster and better quality 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬: - $100,000+ successful Upwork delivery with 90% Job Success Score - 38 enterprise projects with consistent 5-star client reviews - Fortune 500 experience: BNP Paribas, Fujitsu, Accenture - 9+ years specializing in Java/Spring Boot and Angular for enterprise fintech and trading systems Recent Enterprise Success: Led complete platform modernization for a Portuguese marketplace - migrated from SIBS payment system to Stripe Connect, enabling global expansion and automated revenue sharing. Enterprise Specializations: - Java/Spring Boot microservices for enterprise applications - Angular/React frontend development with modern frameworks - Real-time data processing with Apache Kafka - AWS/GCP cloud infrastructure and DevOps - Payment system integrations: Stripe Connect, SIBS, international expansion - AI-assisted development delivering 3-5x faster results with Claude Code - Experience with Remotion, creating video programmatically Proven Business Impact: - International marketplace expansion via Stripe Connect - Real-time order processing systems handling daily enterprise transactions - Mission-critical banking applications with 99.9% uptime requirements - Firebase authentication with custom security for enterprise compliance For larger projects: Also runs Limitless GMTech Solutions, a talent agency providing pre-vetted developers for international clients at competitive EU rates. Search "Limitless GMTech Solutions" on Upwork.

Java Full Stack Developer | Spring Boot | React | Scalable Web Applications I am a Java Full Stack Developer with 4+ years of experience in building scalable, high-performance web applications. I specialize in developing robust backend systems using Spring Boot and creating responsive, user-friendly frontend interfaces with React and Angular. I have hands-on experience in designing end-to-end solutions, from API development to deployment, ensuring clean architecture, performance optimization, and seamless user experience. What I Offer ✔ Backend development using Java, Spring Boot, and REST APIs ✔ Secure application design with Spring Security & JWT ✔ Frontend development using React, Angular, JavaScript, HTML, and CSS ✔ Database design and optimization (MySQL, PostgreSQL) ✔ API testing using Postman ✔ Deployment and version control using Git & GitHub Key Strengths ✔ Writing clean, maintainable, and scalable code ✔ Strong understanding of full-stack architecture ✔ Experience in real-world enterprise applications ✔ Responsive and modern UI development ✔ Quick learner and problem solver Projects & Portfolio I have developed a personal portfolio website to showcase my technical skills, projects, and professional experience. It reflects my ability to build modern, responsive, and production-ready applications. Why Choose Me? ✔ Reliable and committed to deadlines ✔ Clear communication and regular updates ✔ Focus on quality and performance ✔ Client satisfaction is my priority 📩 I am open to freelance and full-time opportunities in Java, Spring Boot, React, Angular, and Full Stack Development.