Biruk Chali
Full-Stack Software Engineer | React Native Specialist
LinkedIn | GitHub
PROFESSIONAL SUMMARY
• 5 years experience building full-stack mobile/web apps with React Native and MERN stack
• Deployed 12+ production applications with monetization systems (Stripe, RevenueCat)
• Technical lead experienced in mentoring teams and optimizing CI/CD pipelines
TECHNICAL SKILLS
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Languages: JavaScript, Python, C++, HTML/CSS, SQL
Frontend: React Native, React, Next.js, Redux, Expo
Backend: Node.js, Express, Django, REST/GraphQL APIs
Databases: MongoDB, PostgreSQL, Firebase, Supabase, SQLite
DevOps: Docker, DigitalOcean, GitHub Actions, Vercel
Soft Skills: Leadership, Agile Development, Technical Documentation
PROFESSIONAL EXPERIENCE
Upwork (Remote)
SEP 2025 - Present
Senior Mobile Developer/ Freelancer
MonaMary LLC (Remote)
Senior Mobile Developer
Jan 2025 - Jun 2025
• Developed 3 cross-platform React Native apps with offline-first capabilities
• Integrated RevenueCat subscriptions generating $5k+ monthly revenue
• Reduced crash rates by 35% through error boundary implementation
Diamond Tech (Onsite)
Full-Stack Developer
Mar 2024 - Aug2025
• Built real-time betting platform handling 500+ concurrent users
• Implemented JWT authentication and WebSocket communication
• Optimized MongoDB queries reducing API response time by 40%
Kiburan Trading (Hybrid)
Mobile App Team Lead
Jun 2024 - sep 2025
• Led UI/UX overhaul improving app store rating from 3.8 to 4.6
• Mentored 3 junior developers in React Native best practices
• Implemented CI/CD pipeline reducing deployment time by 60%
Octanet (Remote)
Python Development Intern
Oct 2023 - Dec 2023
• Developed REST APIs for e-commerce platform using Django
• Automated report generation saving 10+ weekly work hours
KEY PROJECTS
REV FITNESS - AI-based Fitness app React Native, Firebase, Stripe, Apple fit + google health connect, open
AI, IAP
• Integrated AI chatbot and recomandation feature using open ai api key
• talking with the client will be deployed on both store soon
CosmicAI - Astrology Platform
React Native, Supabase
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• Integrated AI chatbot with custom-trained NLP model (85% accuracy)
• Implemented Expo In-App Purchases generating $5k+ revenue
CoachApp - Fitness Marketplace
React Native, DigitalOcean
• Developed real-time chat using WebSockets and Firebase
• Reduced APK size by 45% through asset optimization
Hotel Management System
React, Express, SQLite
• Built offline-capable PWA used by 25+ hotel chains
• Automated inventory management saving 30+ staff hours weekly
Ticket App for Event Organizers
React Native, Firebase
• Implemented QR-code ticket validation system
• Processed 5k+ ticket sales for major events
LEADERSHIP & EDUCATION
Adama Science and Technology University
B.Sc. in Software Engineering
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GPA: 3.34/4.0
• Founder, WebSmart Inc.: Helped 50+ students secure scholarships
• Open Source Maintainer: 3 React Native libraries (500+ downloads)
• Hackathon Organizer: Led 2024 Adama Tech Challenge (150+ participants)
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