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Senior Java Software Engineer | Spring Boot | Microservices | Cloud & DevOps I am a Senior Java Software Engineer with over 4 years of experience building secure, scalable, and high-performance backend systems for telecom, enterprise, and SaaS applications. My expertise spans Java, Spring Boot, RESTful APIs, Microservices, and reactive programming (Spring WebFlux), along with hands-on experience in cloud services, containerization, and CI/CD automation. I help businesses transform ideas into robust, production-ready solutions by focusing on clean architecture, performance optimization, and long-term maintainability. My work consistently delivers faster response times, reduced operational costs, and improved system reliability. What I Do Best - Backend Development: Scalable REST & reactive services using Java, Spring Boot, Spring Data, Spring Security, Hibernate, and WebFlux. - Cloud & Serverless Solutions: AWS DynamoDB, Google Cloud APIs, Microsoft Vision API. - Microservices Architecture: Secure, containerized deployments with Docker, Kubernetes, and OpenShift. - Database Management: Oracle, PostgreSQL, MySQL, Redis, MongoDB, Firebase. - Messaging & Event-Driven Systems: Apache Kafka, RabbitMQ for distributed communication. - API Documentation & Integration: Swagger/OpenAPI, third-party API integration. - UI Integration: Angular, React plugins for enhanced user experience. Professional Highlights - Etisalat Egypt (Systems Limited) – Developed high-throughput, non-blocking backend services using Spring WebFlux, integrated AWS DynamoDB for ultra-fast NoSQL access, and built event-driven workflows with AWS Lambda, significantly reducing operational costs. - Vodafone Egypt (Systems Limited) – Modernized legacy systems (Apache Struts, JSP) into secure Spring Boot microservices, managed Oracle DB with 1M+ records, deployed containerized services on OpenShift, and configured SSL/TLS for secure JBoss deployments. - IST Networks – Built scalable REST APIs, integrated MySQL & third-party APIs, deployed services on Tomcat, linked Genesys Cloud & Cognigy AI with backend systems, and created React plugins to improve conversational AI UX. - Android Development – Delivered mobile apps using Java, Kotlin, Firebase, Google APIs, and taught Android development (Java, SQLite, Firebase) to aspiring developers. Notable Projects - Jobify: Job listing web service with Spring Boot, Spring Data JPA, and JWT security. - Pharmacy Management System: Spring Boot + MySQL system with Swagger documentation. - Bluetooth Smart Car Control App: Android app to control an embedded smart car via Bluetooth using Java/Kotlin. Why Work With Me ✅ Client-Focused: I understand business needs and translate them into technical solutions. ✅ Scalable & Maintainable Code: Clean architecture, SOLID principles, and efficient algorithms. ✅ End-to-End Expertise: From backend architecture to cloud deployment and monitoring. ✅ Problem-Solver: Skilled at debugging complex systems and improving performance. ✅ Proven Track Record: Delivered projects for top telecom companies with millions of active users. Tech Stack - Languages: Java, Kotlin, SQL - Frameworks: Spring Boot, Spring WebFlux, Hibernate, Angular, React plugins - Cloud: AWS, Google Cloud, Firebase - Databases: Oracle, MySQL, PostgreSQL, Redis, MongoDB, DynamoDB - Messaging: Kafka, RabbitMQ - Tools: Docker, Kubernetes, Jenkins, OpenShift, Swagger, Postman, Jira, Confluence - Version Control: Git, GitHub, GitLab, Bitbucket, Gitea

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).

With 10 years of experience in designing, developing, and implementing scalable Java web applications, and enterprise solutions. Expertise in Spring Boot, Microservices, REST API development, database optimization, cloud technologies, and Agentic AI. Certified Confluent Kafka Developer, skilled in building real-time event-driven architectures and optimizing streaming data pipelines. Skills: -Java 8-21. -Spring Framework, Spring Boot, Spring Security, Spring Cloud, Spring batch, Hibernate, JPA, Restful API, Swagger, JSF, Graphql, keycloak, Microservices. -Spring AI, LangChain4j, LangGraph4j, MCP Integration. -Oracle, Postgres, MYSQL, H2, Redis, MongoDB, ElasticSearch. -JUnit, Mockito, TDD Principles, -NodeJS, RXJS, Angular, React, Redux,. -Kafka, RabbitMQ, Camunda. -Data Visualization(D3.js,Hightchart.js). -Maven, Gradle. - AWS, Terraform, Vault, Jenkins, CI/CD, Serverless. - Docker, Kubernetes, Helm.

Creative and dedicated developer who enjoys problem-solving. He has been freelancing for over nine years on different projects with many great clients from different countries and cultures. Ahmed communicates extremely well and enjoys taking on new challenges.

👋 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.

Driven professional with broad technical skills with more than 20 years experience in IT consulting and software development and special focus on cross platform mobile development. Excellent communicator experienced in interpreting and implementing client visions of projects. Known for ability to multi-task and juggle multiple pressing projects simultaneously, meeting all deadlines. Thrives in an environment that constantly embraces new technology. KEY COMPETENCIES AND SKILLS Mobile and Web Development - Knowledge of AngularJS/Angular, Ionic, Typescript, Node.js, HTML5, CSS3, XML, JavaScript, hybrid development (cordova/capacitor), Single Page Application, ASP.NET MVC, ASP.NET WebAPI, SQL, NoSQL - Awareness of the Mobile and Web Development industry, and new technologies - Developing multi-user applications within service orientated architecture - Writing up technical manuals and user instructions - Strategically thinking through all parts of the design process - Knowledge of international web standards and protocols Professional - Able to organise own workload effectively and prioritise tasks - Can quickly understand business requirements and then translate these into functional requirements - Having a passion for customer service & responding quickly to enquiries - Adaptable and able to quickly pick up new techniques - Understanding of W3C standards, web accessibility & best practice Personal - Passionate about doing a good job - First rate interpersonal and communication skills, able to easily interact with fellow developers and customers alike - Strongly committed to all projects from inception right through to the end - Confident, friendly and easy to get along with