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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).

Over the years, I’ve worked with both startups and enterprises to turn complex ideas into reliable, production-ready platforms. My focus is on creating backend architectures that are efficient, maintainable, and built for long-term growth. • Tools I can use when delivering your project ✍🏻 Programming Languages: Java, Python, C++, JavaScript, Dart 🛠️ Backend Frameworks: Spring boot, JakartaEE, Django, FastAPI, Flask 🎨 Frontend Frameworks: React JS, Next JS, Flutter 🛢 Database Management & Cache: MySQL, Supabase, PostgreSQL, MongoDB, SQLite, Redis 🗃️ Event Streaming: Kafka, RabbitMQ 🛡️ Security & Secrets Management: KeyCloak, JWT, HashiCorp ⚙️Automation Management & BPMN: Camunda, N8N 📊 Observability: Grafana, Loki, Kibana, Prometheus 🏗️ System Architectures: Monolithic, MVC, Microservices, Event-driven • Key Highlights - At Crewpr, a Dubai-based startup available on the App Store and Google Play, I served as the first backend engineer. I designed and launched the platform’s entire backend, from architecture to production, delivering a reliable MVP that now serves over 500 active users. - I contributed to Yugo, a large-scale student accommodation platform serving users across Europe, where I enhanced scalability, optimized backend performance, and ensured smooth multi-region operations. - I also collaborated on several governmental digital transformation projects in Ireland, including Enterprise Ireland, NEH, and Startup Ireland, delivering secure, stable, and scalable backend systems that support thousands of daily users. ✨ I believe in clarity, precision, and engineering excellence. Every system I build follows clean architecture principles as OO, SOLID and Design patterns.

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.

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 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

I’m a Senior Software Engineer with over 8 years of experience building large-scale, high-performance backend systems using Java, Spring Boot, and modern DevOps technologies. I’ve worked on enterprise-grade solutions in finance, energy, telecom, and e-commerce, always focused on clean architecture, scalability, and reliability. I specialize in microservices, distributed systems, and cloud-native development using Kubernetes, Docker, AWS, and CI/CD pipelines. My daily toolkit includes Java, Kotlin, Go, and TypeScript, backed by experience with frameworks like Spring Cloud, WebFlux, and Angular. My background includes: DXC Technology: Building pricing microservices for global fuel and charging networks. WorkMotion: Architecting finance and invoicing systems integrated with NetSuite ERP. Jumia: Developing and stress-testing payment APIs for JumiaPay’s high-traffic platform. Celfocus & Intercom: Delivering telecom and banking systems used by millions of users. I bring an engineering-first mindset: testability, performance, and maintainability come before trends. Whether it’s designing a distributed service from scratch or optimizing existing infrastructure, I build software that scales cleanly and lasts. If you need a backend engineer who can handle the full lifecycle, from architecture and code to deployment and observability, I’ll make your system robust, reliable, and production-ready.