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Senior & Principal Full Stack Software Engineer with 8+ years of experience designing, architecting, and scaling high-throughput enterprise systems across Banking, Fintech, Education, and E-Commerce.Specialized in Java/Spring ecosystems, reactive microservices, event-driven architectures, and complex BPM workflow engines (Camunda, Kogito, BPEL). I help clients modernize legacy platforms, build robust backend APIs, and deploy cloud-native applications on Kubernetes and OpenShift. CORE TECHNICAL EXPERTISE: Languages: Java (8/11/17), TypeScript, JavaScript, Groovy, SQL Backend & Frameworks: Spring Boot, Spring Security, Vert.x, Quarkus, Hibernate/JPA, RESTful APIs Workflow & BPM: Camunda, Kogito, jBPM, BPEL, Alfresco ECM Event-Driven & Messaging: Apache Kafka, Kafka Streams, Apache NiFi, Infinispan Databases: PostgreSQL, MySQL, MS SQL Server, Oracle, MongoDB, Redis Cloud & DevOps: Red Hat OpenShift, Kubernetes, Docker, AWS (Cognito), CI/CD (GitLab, Jenkins) Security & IAM: OAuth2, OpenID Connect, Keycloak, JWT, AWS Cognito. WHAT I CAN DO FOR YOUR PROJECT: Enterprise Backends & Microservices: Architect scalable, resilient, and high-concurrency backend applications using Java 17, Spring Boot, and Vert.x. Workflow Automation & BPM Integration: Model, automate, and orchestrate complex business/financial processes using Camunda, Kogito, and Apache NiFi. Legacy Modernization: Refactor legacy systems (JSP/Struts) into modern, containerized microservices running on Docker, OpenShift, or Kubernetes. Security & Identity Management: Implement enterprise IAM solutions using Keycloak, OAuth2, and Spring Security. SELECTED INDUSTRY HIGHLIGHTS: Banking & Fintech: Led full-stack engineering for core digital retail banking platforms (Bank Albilad) and automated banking/funding pipelines. Education & Governance: Engineered compliance and school management systems for Australian institutions and dynamic faculty portals across the Middle East. Enterprise Content Management: Customized large-scale archiving systems (Jupiter, Alfresco) handling massive document metadata and security policies. HOW WE CAN WORK TOGETHER: Whether you need an experienced engineer to build an event-driven system from scratch, integrate a BPM workflow engine like Camunda, or jump into an existing enterprise team to accelerate delivery—I am available for both project-based and long-term contracts.

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

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

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.

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.

🚀 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.