Hire the Best Apache Kafka Developers
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Senior Java Backend Developer with 10+ years building production systems using Spring Boot, REST APIs, and enterprise databases. CORE EXPERTISE: - Spring Boot, Spring MVC, Spring Data JPA, Spring Security - RESTful API design and development - Database design: MySQL, Oracle - Enterprise system integration - Production support and troubleshooting WHAT I DELIVER: - Spring Boot Enterprise applications and RESTful APIs - Database design and optimization (PostgreSQL, MySQL, Oracle) - System integrations and workflow engines - Application support and troubleshooting RECENT HIGHLIGHTS: - Built configurable workflow engine processing thousands of events - Designed multi-system integrations with comprehensive error handling - Kotlin + Spring Boot experience TECHNICAL SKILLS: Java, Spring Boot, Spring Framework, Kotlin, REST APIs, PostgreSQL, MySQL, AWS, Docker, Git, Agile/Scrum MICROSERVICES KNOWLEDGE: - Strong understanding of microservices architecture patterns through coursework and demo projects. Seeking opportunities to apply this knowledge in production environments and build distributed systems expertise under experienced architects. I have a 5.0 Upwork rating and clients describe me as "professional, responsive, and genuinely committed to delivering high-quality work." Available for long-term contracts (30+ hours/week).

🚀 I help startups and enterprises build scalable, production-ready software with a strong focus on Java, Spring Boot, and modern backend architecture. As a Software Engineer, I have designed and delivered systems ranging from start-up MVPs to enterprise and government platforms serving thousands of daily users. My expertise is cantered around building clean, maintainable, and high-performance backend applications, while also collaborating across the full software stack whenever projects require it. What I can help you build: ✔ Java & Spring Boot Applications ✔ REST APIs & Backend Services ✔ Microservices Architecture ✔ Authentication & Security (JWT, OAuth2, Keycloak) ✔ Event-Driven Systems (Kafka, RabbitMQ) ✔ Database Design & Optimization ✔ Performance Optimization ✔ System Integration ✔ Cloud-ready Applications ✔ Software Architecture & Code Refactoring Technologies I work with include Java, Spring Boot, Spring Security, Hibernate, PostgreSQL, MySQL, MongoDB, Redis, Kafka, RabbitMQ, Docker, Camunda, Keycloak, AWS, and modern observability tools. Beyond my primary backend expertise, I have also delivered successful projects using Python, FastAPI, Django, React, Next.js, Flutter, and Supabase whenever they were the right technology for the job. 🌟 Highlights • Architected and developed the complete backend microservices platform for "Crewpr", a Dubai-based startup, designing 10+ microservices, integrating multiple third-party services, and building a scalable production system serving thousands of active users. • Contributed to digital transformation projects for Irish government organizations, including Enterprise Ireland, NEH, and Startup Ireland, building secure and scalable backend systems. • Improved the performance and scalability of Yugo, a large-scale European student accommodation platform, by developing backend features and integrating external hospitality systems including RentCafe, Student Suite, and Entrata.

🏆 Top-Rated Plus Full Stack Developer, Software Architect & CTO in Tech Fortune 500 companies 🚀 Extensive work with enterprise, industrial and startup scale projects focusing on end-to-end software development, software architecture, project management and team leadership such as: 🏢 Worked with large scale governments, VC funded startups ➝ 🆙 Upwork ➝ I’ve built great relationships with all my clients and pride myself on a 5 ⭐ rating and 100% success rate! My clients range from global enterprises to personal projects & startups. My core skillset lies in the delivery of end-to-end software solutions. Everything from a deep discovery phase, the design of scalable and maintainable architectures using UML and other diagramming tools, to the development of high-quality code and user interfaces, I can help you with. I also have expertise in all aspects of the technology stack including cloud computing, distributed systems, CI/CD, API design, SSO, globally distributed databases and more 🧑🏽‍💻 I’m naturally curious and passionate, I enjoy building innovative solutions using cutting-edge technologies to solve challenging problems by thinking outside of the box. I can add a degree of flair and creativity to your project alongside my technical expertise to deliver something unique and bespoke for your needs. ❓WHAT MAKES ME DIFFERENT? 💡 Experience ➝ I have over 10 years of experience in leading cross-functional teams and writing world-class quality products for various domains such as ERP/CRM, E-Commerce, Big Data, AI, Telecos, SaaS and more. I have worked in Fortune 500 companies as well as startups, and with large scale government organizations, so I know how to deliver complex, distributed enterprise systems as well as turn early-stage startups into full functioning enterprises. I’m also leading a global software development enterprise that provides AI solutions for various industries. As a CTO in tech, I have the strategic vision and alignment with the business goals and needs, as well as the research and innovation skills to keep up with the latest technologies and trends. 🗣 Communication ➝ No software project is complete until the client is satisfied with the outcome. I have stellar communication skills and vast experience in presenting to C-Suite executives, managing stakeholders’ expectations, providing technical guidance and coaching to my team members. I earned an Engineering degree in Industrial Engineering and Statistics from a prestigious university and a Master’s degree in Artificial Intelligence from a top-ranked institution. I’m fluent in English. 🤝 Trust ➝ I know that finding the right freelancer for your project can be difficult. I’m a friendly, always open, approachable person that is keen to build trust and rapport with you from the start. I’m here to build long lasting & fruitful relationships and to build software solutions that make your business grow and deliver. You can rely on me to be open, honest, upfront and advisory with my approach 👍🏽 Let’s get in touch if you want to develop your next global enterprise solution. 😊

With 10 years of experience in Backend Engineering and Full Stack Java Development, encompassing projects in cloud systems, web applications and mobile applications . Skills: -Java. -Spring Framework, Spring Boot, Spring Security, Spring Cloud, Microservice, Spring batch, JSF, Hibernate , JPA, Restful API, Web Service, Swagger, Graphql -JUnit, Mockito, TDD Principles, -MYSQL, Postgres, H2, Redis, Mongo, ELK, Keycloack -NodeJS, RXJS, Angular, React, Redux,. -Kafka, RabbitMQ -Data Visualization(D3.js,Hightchart.js) -Maven, Gradle - Jenkins CI/CD, Serverless - Amazon Web Services.. - Docker, Kubernetes.

A company once built a powerful, feature-rich platform — but it kept failing in production. Deadlines were missed, APIs were unreliable, and the codebase became impossible to maintain. The problem wasn't the idea. It was the engineering behind it. That's exactly the kind of problem I solve. I'm Ahmed, a Full-Stack .NET Engineer with 4+ years of experience building scalable, high-performance enterprise systems. I specialize in ASP.NET Core, Microservices, CQRS, Angular, and SQL Server — delivering clean, maintainable, and production-ready solutions that businesses can actually rely on. I've worked on large-scale distributed systems, smart city platforms, and business workflow applications — always with a sharp focus on performance, code quality, and long-term maintainability. I don't just write code — I think about architecture, scalability, and the real business impact of every technical decision. When you work with me, you get an engineer who takes full ownership, communicates clearly, and delivers results that hold up in production. 👉 Here's what I bring to the table: 🔧 Backend Powerhouse ASP.NET Core · Web API · Microservices · CQRS · DDD · Event-Driven Architecture · Kafka 🎨 Frontend Craft Angular · TypeScript · HTML5 · CSS3 · Bootstrap 🗄️ Data That Performs SQL Server · Entity Framework Core · LINQ ⚙️ Built to Ship Docker · SignalR · Git · CI/CD 📐 Engineering the Right Way SOLID · Clean Architecture · Design Patterns · Unit Testing · Agile If you're looking to build something robust and scalable — let's talk.

Experienced Java Backend Developer with 7+ years of working experience with a proven track record of deliver- ing robust software solutions. Seeking a challenging role where I can utilize my expertise in Spring/Spring Boot, J2EE, and Rest web services to drive innovation and contribute to the success of impactful projects. Committed to delivering high-quality code, optimizing performance, and staying up-to-date with emerging technologies. Excited to join a dynamic team and make a significant impact in the field of Java backend development.