Taking new projects for October 2026

I build fast, beautiful apps for Android, iOS, Web and Desktop.

Mustapha Amin, Flutter developer. One codebase, every platform. I've shipped fintech, healthcare and identity apps for teams in Nigeria, Australia and India.

Book a free 20-min call → See my work
5+ apps live 60% faster deployments Replies within 24h
Android iOS Web Desktop
Multi-device app mockups

Selected work

Production apps, live on the stores.

RavaPay App
Fintech · Lead Developer

RavaPay

A digital payments app for airtime, data, electricity, cable TV, bulk purchases, recurring payments, and wallet transactions in Nigeria.

0 % faster
deployments
Zero to production
launch
Flutter Dart Riverpod CI/CD
Play Store Website Read case study →
Paxform App
Identity · Developer

Paxform

A secure form and identity platform for documents, autofill, and verified workflows. Features offline-first sync with local persistence.

Offline first sync
& persistence
Modular architecture
rewrite
Flutter Dart Bloc REST API
App Store Play Store Read case study →
DocAssist App
Healthcare · Developer

DocAssist

A healthcare app for patient records, scheduling, and clinical workflows, featuring video consults and real-time messaging.

0 + healthcare
providers
0 % less docs
time
Flutter Firebase WebSockets
App Store Play Store Read case study →
MyVault App
Fintech · UI/UX Developer

MyVault

A fintech app for automated savings, goals, and investments with integrated payment gateways.

99.2% payment success
in testing
0 % better user
satisfaction
0 + screens
redesigned
Flutter Dart Riverpod REST API
Play Store Read case study →
OZBconnect App
Fintech · Lead Developer

OZBconnect

A fintech app for paying bills like airtime, electricity, data, cable TV, and more.

Zero to production
launch
0 % faster
deployments
Flutter Dart CI/CD
Play Store Read case study →

Android

Native-feeling performance and Material Design.

Shipped

iOS

Smooth animations and Cupertino components.

Shipped

Web

Responsive admin panels and web portals.

Available

Desktop

Mac, Windows, and Linux executables.

Available

Flutter + Dart means one team, one codebase, faster launches and lower cost.

What I can build for you

Payments and wallets

Bill payments, recurring payments, wallet flows, gateway integration.

FintechStripePaystack

Healthcare apps

Records, scheduling, video consults, real-time messaging.

HIPAA readyWebRTC

Secure identity

Autofill, verified workflows, offline-first sync.

BiometricsLocal storage

Architecture refactors

Modular, testable codebases using Riverpod or Bloc.

Clean ArchState management

CI/CD pipelines

Automated builds, faster, safer releases to app stores.

GitHub ActionsFastlane

UI/UX polish

Figma-to-Flutter, 25+ screen redesigns, smooth animations.

Pixel-perfectMicro-animations

Flutter · Dart · Firebase · Appwrite · REST · Riverpod · Bloc · CI/CD

How we can work together

MVP build

Idea or Figma to App Store and Play Store.

  • Typical timeline: 4-8 weeks
  • UI/UX implementation
  • Backend integration
  • Store submission
  • 30 days of free bug fixes
Fixed quote after a free call.
Most popular

Embedded developer

Monthly capacity for your team.

  • Direct integration with your team
  • New feature development
  • Bug fixes and maintenance
  • Code reviews
  • CI/CD setup and management
Fixed monthly rate.

Audit and rescue

Fix a slow, buggy or messy Flutter app.

  • Comprehensive code audit
  • Performance profiling
  • Refactor plan and roadmap
  • Architecture modernization
  • Bug squashing sprint
Fixed quote after a free call.

Not sure what you need?

Tell me about your project

From idea to launch

01

Discovery call

We discuss your goals, target audience, and technical requirements.

You get: Clarity on feasibility
02

Scope & quote

I break down the project into milestones and provide a fixed price.

You get: Written scope & timeline (48h)
03

Design review

We ensure Figma designs translate perfectly to Flutter widgets.

You get: UX polish recommendations
04

Build & iterate

Development happens in sprints with regular testing builds.

You get: Weekly demos on real devices
05

Launch & support

I handle store submissions and monitor the app post-launch.

You get: 30 days of support included
Mustapha Amin portrait

Who am I?

I'm a Mobile Developer with experience building production-ready applications using Flutter and Dart. I've shipped fintech, healthcare, and identity-management apps across Android, iOS, and the web — working with teams in Nigeria, Australia, and India.

I'm passionate about clean architecture, polished user experiences, and delivering software that makes a real impact.

Education: B.Sc Software Engineering at Bayero University Kano.

0
+ years
0
+ apps shipped
0
countries

How I work

  • You talk directly to the engineer (no project managers).
  • Weekly demos on a real device.
  • Clean, documented code with solid architecture.
  • Honest timelines.
Where I've worked
Lead Flutter Developer Nov 2025 - Aug 2026
Techia Systems

Led RavaPay and OZB Connect from zero to production.

Flutter Developer Dec 2025 - May 2026
Paxform

Offline-first sync and a modular rewrite of a legacy codebase.

Flutter Developer May 2025 - Dec 2025
Medoc Health

Features for 500+ providers, 40% less documentation time.

Flutter Developer Jul 2025 - Sep 2025
MyVault

25+ screen redesign, 45% better satisfaction.

Frequently asked questions

How much does an app cost?
Every project is different. After our initial call, I'll provide a detailed, fixed-price quote based on the specific features and complexity of your app. No hidden fees.
How long does it take?
A standard MVP typically takes 4 to 8 weeks from start to launch. More complex applications with extensive backend integrations will take longer.
Can you work from my Figma designs?
Yes. I specialize in translating high-fidelity Figma designs into pixel-perfect, animated Flutter widgets. We'll do a design review first to ensure everything is technically feasible.
Do you sign NDAs?
Absolutely. I regularly work on fintech and healthcare applications where confidentiality is critical. I'm happy to sign your NDA before we discuss any details.
What happens after launch?
I include 30 days of free bug fixes after the app is live. If you need ongoing maintenance or new features, we can discuss a monthly retainer or ad-hoc hourly rate.
Which timezones can you overlap with?
I'm based in Nigeria (WAT/GMT+1) but have successfully shipped apps with teams in Australia and India. I ensure overlap for daily communication and standups.
Do you handle store submissions?
Yes. I can manage the entire submission process for both the Apple App Store and Google Play Store, including reviewing guidelines and responding to reviewer feedback.

Have an app in mind? Let's talk this week.

Free 20-minute call. You'll leave with a clear next step, whether we work together or not.

Book a call → WhatsApp mustaphaadinoyi75@gmail.com

Replies within 24 hours.

Free call · No commitment · NDA available

Book a free 20-min call