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🚀 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.

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 am a highly skilled software engineer with over seven years of experience in designing and developing scalable, high-performance applications using Java, Spring Boot, and microservices architecture. My expertise lies in building cloud-native solutions, leveraging AWS services to ensure reliability, security, and efficiency. I specialize in microservices development, utilizing Spring Boot to create modular, maintainable, and distributed systems that power critical business applications in industries such as finance, banking, insurance, commerce, and telecommunications. With a strong background in CI/CD pipelines and DevOps, I ensure seamless integration and deployment using Docker, Kubernetes, Jenkins, and AWS services. My hands-on experience in monitoring and observability includes working with Kibana, Elasticsearch, Jaeger, and Datadog to optimize system performance and troubleshoot issues effectively. I am proficient in Agile and SAFe methodologies, fostering collaboration and efficiency within development teams. Additionally, I have extensive experience with version control, automation, and infrastructure management using Git, Bitbucket, JIRA, Maven, SonarQube, and AWS CloudFormation. With a Bachelor of Science in Computer Science from the Faculty of Computers and Information (2016), I am passionate about building robust, scalable, and cloud-driven solutions that drive business success. For easy contact, that's my Skype Name:- mohamed.hamid660 Thank you

If your server is slow, unstable, crashing, or costing you more than it should — I fix that. I’m a Senior Linux & DevOps Engineer with 10+ years of hands-on experience helping businesses stabilize production servers, fix critical issues, and optimize infrastructure for performance, security, and cost. Typical problems I solve: • High CPU / RAM usage & slow servers • Broken or unstable Kubernetes clusters • Failed migrations (AWS, Hetzner, DigitalOcean, GCP) • WordPress / cPanel performance issues • Security incidents, malware, and server breaches • Scaling issues and downtime What you get: ✔ Fast and accurate troubleshooting ✔ Clear explanation (no tech confusion) ✔ Production-safe fixes ✔ Long-term stability, not temporary patches I’m a Certified Kubernetes Administrator (CKA) with proven experience across AWS, GCP, Linux, Docker, Nginx, and cPanel environments. If your system is in trouble — I’m the guy you bring in to fix it.

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.

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