Yosef Worku

Hi, I’m Yosef — a Lead Developer and passionate full-stack engineer with 4 years of experience in software development. I specialize in MERN stack, Android apps, and DevOps automation.

• Leading development of Affcollect, an affiliate integration platform.
• Improved scraping speed 4x using code optimization and clustering.
• Integrated 5+ affiliate systems and third-party tools like 1Password.
• Built secure REST APIs for external integration.
• Enhanced stability with better error logging and diagnostics.

• Worked on LinkBuilders platform as a full-stack developer.
• Built a detailed activity logging system for better monitoring.
• Refactored codebase to improve quality and performance.
• Added attribute-level access control using MongoDB.
• Converted the platform into a Progressive Web App (PWA) for better UX.

• Built CI/CD pipelines using GitLab, Jenkins, and Apache2.
• Automated API testing using RestAssured and JUnit4.
• Collaborated on ERP systems — gathered requirements and built features.
• Helped develop the Fleet Drivers Android app.

• Mezgebe Tselot App
• → Android prayer app with 100K+ downloads
• → 72K monthly active users and a 4.7-star rating
• → Includes offline mode and "Do Not Disturb" during prayer
• Chapa In-App Purchase SDK
• → Open-source Android SDK for Chapa payment integration
• → Built with Java, Kotlin, and AES encryption
• GREMS Mobile App
• → Bluetooth device setup app using React Native, Java, Objective-C
• → Supports Android and iOS with intuitive UI and secure pairing

• BSc in Electrical & Computer Engineering, Mizan Tepi University
• MongoDB Certified Associate Data Modeler

• Languages: JavaScript, TypeScript, Java, Kotlin, SQL
• Frameworks: Node.js, React, Express, Redux, Tailwind
• Mobile: Android, React Native, Firebase
• DevOps: Docker, GitLab CI/CD, Jenkins
• Others: MongoDB, Puppeteer, Socket.io, Redis, Kafka, PWA, 1Password,