MUM. UsmanMobile engineer
Contact

Available for contracts & senior roles

I build Mobile apps that hold up in the real world.

  • Complex APIs
  • Third-party integrations
  • Offline states
  • Payments
  • Real-time features
  • Edge cases
  • App Store releases

I handle the parts that turn a prototype into a product.

Explore case studies

musman · mobile-app

Clean architecture · unidirectional

Presentation

GetX / Riverpod · widgets, state, no business rules

Domain

UseCases / Entities · pure Dart, fully testable

Data

Repositories · REST & GraphQL · local cache

Experience

5+ Years in Mobile Industry

Real users, real release cycles. Not prototypes.

Releases

Both App Store & Google Play

Signing, flavors, listings, review feedback.

Domains

Complex Problem Spaces

Healthcare, education, delivery, booking, digital shops, ai.

Approach

Architecture First

Clean layers that stay maintainable as scope grows.

Case studies

Products in production.

What I take care of

The parts that usually go wrong.

Zero to App Store

Scoping, architecture that survives version two, and release on both stores.

  • Scoping & estimation
  • Architecture decisions
  • Store submission

Legacy app takeovers

Read the inherited codebase, report what's wrong, stabilise before adding features.

  • Code audit
  • Dependency migrations
  • Crash stabilisation

Complex integrations

Payments, maps, notifications and SDKs that behave differently per platform.

  • Stripe payments
  • Maps & geofencing
  • Notifications & third-party SDKs

Performance & edge cases

Poor networks, backgrounded apps, low battery, long lists, older devices.

  • Efficient background sync
  • Offline persistence
  • Smooth 60fps UI

Technical capabilities

Tools I use daily.

Core
FlutterDart
Architecture & state
Clean ArchitectureMVVMGetXRiverpod
Data & backend
RESTfulGraphQLFirebaseSupabaseWebSocketsPusher
Integrations
Social AuthenticationPush NotificationsDeep LinksPayment GatewayIn-app PurchaseGoogle AdsArtificial Intelligence
Storage & offline
HiveSQLite
Release tooling
FastlaneCI/CDApp Store ConnectGoogle Play Console

Let's build together

Book a call, or send the details.

Path A

Book an intro call

15 to 30 minutes on what you're building and whether I'm the right fit.

hello@musman.dev

Path B

Send project details