I am David Onuche, a Software Engineer specializing in Mobile Application Development. I design and ship cross-platform products with Flutter & Firebase, and build native Android applications with Kotlin — with a focus on architecture that holds up at scale, not just in a demo.
Alongside engineering, I am reading for a degree in Computer Science at the University of the People, and operating as a startup builder — taking products from a blank repository to something real people depend on.
I care about the layer underneath the UI: the data flow, the architecture, the decisions that determine whether a product survives its first 100,000 users. My focus areas:
- Mobile Engineering & Cross-Platform Architecture
- Software Architecture & System Design
- Product Development & Startup Building
- Business Strategy & Technology Leadership
- Digital Transformation across emerging markets
- Building software that quietly fixes real problems for real people
| 🍽️ | Scaling ChopGrub — a multi-app food delivery ecosystem for Africa (Customer, Restaurant, Rider & Admin) |
| 🌱 | Building Vaulterr — my next venture, built around secure, scalable systems |
| 🔐 | Architecting Grow Easy — a Flutter + Firebase platform for children's academic, psychological & spiritual development |
| 📱 | Developing CiviQ — an open-source Kotlin project focused on delivering impactful Android solutions and strengthening the developer community |
| 🎓 | Studying Computer Science at the University of the People |
| ⚙️ | Deepening expertise in advanced Flutter architecture & native Kotlin development |
| 🤝 | Open to collaborating on ambitious mobile products and technical co-founder opportunities |
A food delivery ecosystem engineered for Africa — four connected applications running on a single, scalable backend.
Architecture
- 📱 Customer App — ordering, discovery, real-time tracking
- 🏪 Restaurant App — order & inventory management
- 🛵 Rider App — live delivery & route logistics
- 🖥️ Admin Dashboard — operations, analytics & control
Focus: local commerce infrastructure, real-time tracking, and an ordering experience built to hold up under real-world load.
Flutter Dart Firebase Real-Time Systems Multi-App Architecture
A digital product currently in development — my next venture, built around the principle that secure, scalable technology should be the default, not the exception.
Vaulterr is where engineering discipline meets long-term product vision: a bet on what comes next.
Flutter Dart Security-First Architecture Scalable Systems
A Flutter + Firebase platform built to help children grow academically, spiritually, psychologically, and mentally — one connected ecosystem for parents and children.
Highlights
- Academic learning modules & career discovery system
- AI-powered learning features
- Parent dashboard & child dashboard
- Premium subscription architecture
- Goal management, progress tracking & notifications
- Firebase-backed authentication and real-time data architecture
Flutter Dart Firebase Firestore Cloud Functions
Mobile
Backend & Cloud
Languages
Tools
| Area | Capability |
|---|---|
| Architecture | Clean Architecture, MVVM, layered state management at production scale |
| State Management | Provider, Bloc/Cubit, and reactive state patterns |
| Backend Integration | Firebase Auth, Firestore data modeling, Cloud Functions, Storage, Push Notifications |
| Performance | App startup optimization, build size reduction, render performance tuning |
| Multi-App Systems | Designing and shipping multiple interconnected Flutter apps sharing one backend |
| Native Android | Kotlin-based native development alongside cross-platform Flutter work |
B.Sc. Computer Science — University of the People
Coursework spanning software engineering, algorithms, data structures, and systems design — applied directly to production mobile products rather than treated as theory in isolation.
Currently deepening expertise in:
- 🏗️ Advanced Flutter Architecture & design patterns at scale
- 🤖 Native Android Development with Kotlin
- 🧩 Scalable System Design for high-growth products
- 🔥 The wider Firebase ecosystem (Functions, Extensions, Performance Monitoring)
- ✅ Software Engineering best practices — testing, CI/CD, code review discipline
- ⚡ Mobile performance optimization
- 📊 Product strategy & go-to-market thinking
- 🧠 Practical AI integration into mobile products
I am not building apps. I am building products, systems, and businesses — using software as the lever.
Every project I ship is a step toward a simple long-term goal: technology that improves life at scale, starting in Africa and built to travel beyond it. I want to be in the room building the products that move millions of people forward — not adjacent to that work, but responsible for it.
- 🌍 Building for a global market from day one
- 📦 Have shipped multi-role app ecosystems, not just single apps
- 🧠 Treats every product decision as a business decision first
- 🔁 Believes architecture decisions made in week one decide whether a product survives year three
"Code is the easy part. The hard part is building something that still works when a million people are using it."