Hire the Best Java EE Developers in Addis Ababa, ET

I am an experienced Software Engineer specializing in Java, Spring Boot, J2EE, and Microservices Architecture, with strong expertise in enterprise-level FinTech applications. Since November 2022, I have contributed to mission-critical projects at Atlas Computer Technology, including USSD platforms, Mobile Banking, Backoffice systems, and real-time payment integrations. My expertise includes: ✅ Java EE & Spring Boot (Reactive) for building scalable, high-performance banking applications, including customer onboarding and back-office operations. ✅ Microservices design and implementation with modular, maintainable architectures. ✅ Asynchronous messaging & integration using Kafka and ActiveMQ for seamless inter-service communication. ✅ Payment gateway integrations, including Flygate and IPS, supporting real-time bank-to-bank transfers with XML messaging. ✅ Secure identity management using Keycloak. ✅ Designing and consuming RESTful APIs, with experience in modernizing services for cloud readiness and enterprise integration. Professional Approach: I am passionate about delivering clean, maintainable, and production-ready code that drives real business value. I bring a problem-solving mindset, collaborative approach, and adaptability to every project — whether building features from scratch, optimizing existing systems, or integrating complex banking solutions. Let’s connect and make your vision a reality. Portfolio: kidist-portfolio-al3e.vercel.app

**Java Spring Boot Developer | AI Automation Engineer | n8n | LLM Integration | React & Angular** I build production-grade **Java/Spring Boot applications, AI automations, n8n workflows, LLM integrations, APIs, and full-stack web applications**. I help startups and businesses build new systems, automate manual processes, integrate AI, or rescue existing codebases. I'm Abel, a full-stack software engineer with 5 years of experience building production systems — from government justice platforms to real-time tax risk systems processing live data through Kafka. ### WHAT I CAN BUILD ✔ **Java & Spring Boot Development** * REST APIs and backend systems * Spring Boot microservices * Spring Security, JWT, OAuth2 & Keycloak * PostgreSQL, MySQL & database design * Kafka and event-driven architecture * Backend optimization and troubleshooting ✔ **AI Automation & n8n** * n8n workflow automation * AI-powered business workflows * LLM integrations * OpenAI and AI API integrations * AI agents and tool calling * Automated data processing * CRM, email, Slack and third-party API automation * Document and content automation * Connecting AI with existing business systems ✔ **Full-Stack Development** * React * Angular * TypeScript * Node.js * Tailwind CSS * REST API integration ✔ **Microservices & Integration** * Java/Spring Boot microservices * Kafka * REST APIs * Third-party API integrations * Event-driven systems * Service-to-service communication ✔ **DevOps & Production** * Docker * Kubernetes * GitHub Actions * Grafana * Loki * Monitoring and troubleshooting ### I CAN HELP YOU WITH → Building a new Spring Boot backend → Developing or fixing REST APIs → Building Java microservices → Integrating AI/LLMs into an existing application → Automating repetitive business processes with n8n → Connecting multiple APIs and business systems → Building AI-powered workflows and agents → Developing React/Angular frontends → Fixing authentication, JWT, OAuth2 and Keycloak issues → Debugging and rescuing existing applications → Deploying applications with Docker/Kubernetes ### WHY CLIENTS WORK WITH ME I don't just write code that works locally. I focus on **maintainable architecture, reliable integrations, security, documentation and production stability**. I've worked on systems involving real users, real transactions and real operational requirements — including government platforms and event-driven systems using Kafka. If you need a **Java/Spring Boot developer, AI automation engineer, n8n expert, LLM integration developer, or full-stack engineer**, send me your requirements and I'll help you turn them into a working system.

Java Developer and backend engineer specializing in Spring Boot, REST API development, and AI integration — building production-grade systems that solve real business problems, not just pass code review. I am a Java developer with hands-on experience delivering full backend systems independently — from architecture through deployment. Every system I ship is production-ready, properly secured, and documented. What I deliver as your Java developer: ▸ Spring Boot REST APIs — Java backend systems with 60+ endpoints, multi-role JWT security, Redis caching, and WebSocket real-time features. Clean layered architecture, JUnit 5 tested, OpenAPI documented. Built for teams to maintain, not just for demos. ▸ AI Integration — Java developer with Spring AI and OpenAI GPT integration experience. My project Famlytica AI is a 13-module Spring Boot platform with cross-module AI context architecture — awarded 2nd place at a national competition evaluated by PhD faculty with a cash prize. ▸ Machine Learning — IBM-certified Java developer with Python ML skills. I clean, analyze, visualize, and train models with Scikit-learn. Deployed a live ML-powered business intelligence dashboard processing 128,000+ real transactions. ▸ Payment Systems — Java backend developer with full Chapa payment lifecycle integration including HMAC-SHA256 webhook verification and real production money flows. Built for security, not just happy-path demos. ▸ Full-Stack Delivery — Java developer who can build React 19 frontends when your project needs end-to-end delivery, not just a backend handed off to another team. I run a live e-commerce platform (habeshamarket.store) and have delivered backend systems actively used by real businesses. I respond within a few hours and deliver what I commit to. If you need a Java developer who builds backend systems right the first time — let us talk. Java Developer · Spring Boot Developer · Backend Developer · Java Backend Developer · REST API Developer · Spring Security · Spring AI · OpenAI Integration · JWT Authentication · Redis · PostgreSQL · MySQL · Hibernate · Docker · AWS · WebSocket · Microservices · API Development · Machine Learning · Python · React · Full-Stack Developer · Spring Framework · Software Architecture

I am a Full Stack Developer with strong expertise in building scalable web applications, ERP systems, and enterprise solutions. I specialize in customizing and integrating open-source platforms such as ERPNext (Frappe), Odoo, CRM, and HR systems to meet specific business needs. I have hands-on experience delivering complete solutions—from frontend design to backend logic, database architecture, and server deployment. My goal is to help businesses streamline operations, automate workflows, and improve efficiency through reliable and modern systems. 🔹 What I Do: • Full Stack Web Development (Java EE, REST APIs, modern UI) • ERP Implementation & Customization (ERPNext / Frappe, Odoo) • CRM & HR Systems Development • Android Application Development (API-integrated systems) • Server Setup & Management (Linux, VPS, Cloud) • Database Design & Optimization (MySQL, performance tuning) • System Integration (APIs, WebSockets, third-party services) 🔹 Key Strengths: • Build complete business systems (ERP, POS, Accounting, Inventory) • Customize existing systems to match real business workflows • Optimize performance for large-scale data systems • Secure deployments with authentication (JWT, role-based access) • Clean, maintainable, and scalable code 🔹 Experience Highlights: • Developed ERP and POS systems for multiple companies with multi-database architecture • Built accounting modules (GL, AR, AP, Banking) with real-time reporting • Integrated mobile apps with backend systems via REST APIs • Deployed and managed production servers with Docker and cloud environments I focus on delivering high-quality solutions that are practical, scalable, and aligned with business goals. If you need a reliable developer who understands both technology and business processes, I am ready to help. Let’s build something powerful.

Greetings! I'm Gutu Daniel Geleta, a Full Stack Developer with deep expertise in Java-based backend systems and scalable web applications. With experience across fintech, edtech, and e-commerce, I bring a problem-solving mindset and real-world experience in delivering secure, high-performance, and microservice-oriented architectures. I currently serve as a Software Engineer at Dengene Technology Solution (USA-based), where I work with Java, Spring Boot, and Kafka to build robust microservices and event-driven systems in fast-paced environments. I’ve also contributed to platforms like AddisFinancial, automating complex processes and enhancing system performance. 🌟 Certifications & Training 🌟 Verified Certifications (Credly / Official Providers) 🏅 Prompt Design in Vertex AI – Skill Badge  • Provider: Google Cloud  • Issued: November 2025 🏅 Implement Load Balancing on Compute Engine – Skill Badge  • Provider: Google Cloud  • Issued: November 2025 🏅 Google IT Support Professional Certificate (v2)  • Provider: Coursera  • Issued: December 2023 🏅 Tools for Data Science  • Provider: IBM  • Issued: June 2022 Additional Certifications & Courses 🏅 Spring Boot – Amigoscode  • Issued: July 2022 🏅 Java Programming Masterclass for Software Developers – Udemy  • Issued: May 2021 🏅 Full Stack Software Engineering – ALX 🏅 Java – HackerRank 🏅 Spring Boot & Spring Security – Amigoscode 🏅 Frontend Development – Johns Hopkins University (Coursera) 🌟 My Specializations 🌟 ✅ Java (8, 17+), Spring Boot, Spring Security, Spring Data ✅ Microservices, Kafka, RESTful API Design ✅ Domain-Driven Design (DDD), Hexagonal Architecture, Clean Architecture ✅ React.js, Next.js, TypeScript, Tailwind CSS ✅ Databases: PostgreSQL, MySQL, MongoDB ✅ Authentication: JWT, OAuth2, Role-Based Access Control ✅ Testing: JUnit, Mockito, Integration Testing ✅ CI/CD & DevOps Basics: Git, GitHub, Docker ✅ Cloud Platforms: AWS, DigitalOcean ✅ Agile Development, Clean Code, Performance Optimization Notable Projects & Contributions 🔹 Addis Wealth Management System – Scalable fintech platform built with Java, Spring Boot, and React. 🔹 Automated Exam Repository System – AI-powered exam parser with PDF/DOCX ingestion and dynamic question rendering. 🔹 Exam Version Generator – A tool for creating multiple randomized versions of exams with a live preview. 🔹 E-Commerce Platform (SportGoods) – Full-stack app with secure login, cart, and payment integration. 🔹 Task Management System – Java + MySQL app with full CRUD, user roles, and CSRF protection. 🔹 Full Stack Mentorship – Ongoing freelance mentorship for junior developers in React, Node.js, and backend fundamentals. 🎓 Education • BSc in Computer Science – Mattu University (2024) • ALX Full Stack Software Engineering Graduate Whether you're looking to architect a robust backend, launch a reliable frontend, or integrate a secure API layer, I’d love to collaborate and build something impactful with you. Let’s connect and make your vision a reality. 📌 Portfolio: my-portifolio-gutu.netlify.app 📌 Linkedn: linkedin.com/in/gutu-daniel

Versatile and results-driven Full-Stack Software Developer & DevOps Engineer with extensive experience in designing, developing, and deploying secure, scalable web applications and RESTful APIs. Proficient in Java, Spring Boot, React, Angular, Python, and TypeScript, with a strong emphasis on performance optimization, accessibility (WCAG 2.1) compliance, and clean architecture. Skilled in DevOps practices, including containerization (Docker, Kubernetes), CI/CD automation (Jenkins, GitLab CI/CD, GitHub Actions), and infrastructure management across Linux systems (Ubuntu, RHEL, Oracle Linux) and cloud platforms such as Azure, AWS, Huawei Cloud, and OpenShift. Experienced in implementing modern observability and monitoring solutions, including OpenTelemetry for distributed tracing and SigNoz for real-time performance analysis and system insights. Demonstrated ability to accelerate delivery cycles, streamline deployment processes, and reduce operational costs through automation and efficient system design. Recent achievements include leading the development of a secure transaction platform for KisPay, implementing WCAG-compliant enterprise systems, and managing cloud-native deployments using modern DevOps and observability toolchains. 💻 Technical Skills ✅ Programming Languages: Java, Python, JavaScript, TypeScript, Shell Script, PHP, HTML5, CSS3, SQL, YAML ✅ Front-End Development: React.js, Redux, React Hooks, Angular, Kendo UI, Bootstrap, Material UI, SASS, Next.js, WordPress ✅ Back-End Development & Frameworks: Spring Boot (Security, Data, Cloud, WebFlux, AOP), Node.js, NestJS, Express.js, Django, Laravel, AEM ✅ Web Services & API Management: RESTful APIs, GraphQL, JSON, JWT, Keycloak, Spring Cloud Gateway, Kong Gateway ✅ DevOps, CI/CD & Automation: Docker, Kubernetes, Jenkins, GitHub Actions, GitLab CI/CD, ArgoCD, Ansible ✅ Cloud Platforms & Virtualization: AWS, Azure, Huawei Cloud, OpenShift, Proxmox, OLVM, VirtualBox, Hyper-V ✅ Monitoring, Logging & Observability: OpenTelemetry, SigNoz, Prometheus, Grafana, ELK Stack (Elasticsearch, Logstash, Kibana), Zabbix, SonarQube ✅ Operating Systems & Servers: Linux (Ubuntu, RHEL, CentOS, Oracle Linux), Nginx, Apache, HAProxy, Traefik Application Servers: Tomcat, WildFly, WebLogic, IIS ✅ Databases: MySQL, PostgreSQL, Oracle, MongoDB, SQLite, H2 ✅ Accessibility & Compliance: WCAG 2.1, ARIA roles, Semantic HTML ✅ Tools & Collaboration: Git, GitHub, GitLab, JIRA, Figma, Gradle, Maven