JEM
Empowering ideas through code
Welcome to My Portfolio
I am dedicated to building impactful digital solutions that empower businesses and individuals. Explore my work, skills, and journey below.
Hello, I'm John Emil Modzaka
I'm a passionate mobile app and backend developer with over 5 years of experience building seamless, efficient, and user-friendly applications. My journey began with a curiosity for how technology can solve real-world problems, and has grown into a career where I've led and contributed to impactful projects across education, finance, and property management sectors. I currently work as a developer at Resolut.
- Developed and launched Oyeh, a school management platform now used by over 5 institutions.
- Architected scalable cloud solutions for fintech and property management startups.
- Integrated advanced LLMs and AI features into mobile and web applications.
My philosophy: "Technology should empower people and simplify lives." I thrive on collaboration, continuous learning, and turning ideas into reality.
When I'm not coding, you'll find me exploring new tech trends, mentoring junior developers, playing basketball or enjoying a good anime.
Projects
AssistPay
USSD automation app for MoMo agents to speed up transactions and reduce manual input errors.
Flutter, Firebase Auth, Cloud Functions, USSD integration
Role: Mobile App Developer
Impact: Improved agency transaction speed by enabling one-tap USSD workflows and account verification.
Challenge: Handled dual-SIM USSD routing and consistent flow execution across different Android devices.
Built Android-focused USSD automation flows with secure auth and in-app response handling.
Sikatrim
A mobile product designed to simplify financial interactions with fast, accessible user flows.
Flutter, Firebase, Cloud Architecture
Role: Mobile App Developer
Impact: Delivered a cross-platform mobile experience with consistent performance across Android and iOS.
Challenge: Maintained feature parity and smooth UX between Android and iOS releases.
Used shared Flutter code to accelerate release cycles and keep user experience consistent.
Oyeh
School management application connecting parents, teachers, and school admins with real-time updates.
Electron.js, Node.js, PostgreSQL, Flutter, Cloud Architecture, Socket.io
Role: CTO & Lead Developer
Impact: Led the end-to-end development, resulting in adoption by 5+ schools and improved communication between parents, teachers, and admins.
Challenge: Designed a real-time notification system for multiple user roles.
Leveraged Electron for cross-platform desktop support and Socket.io for real-time updates.
Petite Elise
Parent-focused preschool mobile app for attendance, updates, and communication.
Flutter, Cloud Architecture, Firebase, MySQL
Role: Mobile App Developer
Impact: Delivered a user-friendly app for parents to track their children's activities and communicate with staff.
Challenge: Integrated secure photo sharing and real-time updates.
Flutter enabled rapid cross-platform development; Firebase for real-time data sync.
Resolut Finance
Backend development for an online banking system.
ASP.NET, SQL Server, Cloud Architecture
Role: Developer
Impact: Built robust APIs and ensured high security standards for financial transactions.
Challenge: Implemented multi-factor authentication and transaction auditing.
Ask for project detailsChose ASP.NET for enterprise-grade security and scalability.
Skills
Core technologies and tools I use to build reliable mobile, web, and backend systems.
Frontend
Backend
Mobile
Database
Cloud & DevOps
Tools & Integrations
Soft Skills
Contact
I'm always open to new opportunities and collaborations. Let's build something great together! Whether you have a project in mind, want to discuss tech, or just want to connect, feel free to reach out.
Typical response time: Within 24 hours
Thank you for visiting my portfolio!
Portfolio source code here:https://github.com/MawuliKing/dev
Best regards, John Emil Modzaka