Faiz Hashmi — Full-Stack Mobile Solutions (Flutter)

What I do

Engineering that moves the product, not just the ticket

Product Architecture

I design app structures that stay maintainable as teams and features grow. Clean Architecture, clear module boundaries, sane state management.

Mobile Engineering

Production Flutter, plus native Kotlin/Swift when the platform demands it. Built for real devices and real network conditions.

Performance Optimization

I find and fix what makes apps slow, crash, or drain battery. Measured, not guessed.

Team Leadership

I set code-review standards, mentor engineers, and keep delivery moving without lowering the bar.

MVP Development

I take founders from idea to a shippable product under tight timelines, without architecting them into a corner.

AI Product Integration

I use AI tooling to ship faster, and integrate AI features into products where they add real value — not as decoration.

Selected work

Products I’ve shipped, and what they took

Swipe through a few projects where the architecture and product decisions mattered as much as the code.

Beauty & Wellness2025 — Present

&

Bokka Ecosystem

Two-sided booking platform for salons, spas, and beauty pros

Bokka Customer - App Store Bokka Customer - Play Store Bokka Business – App Store Bokka Business – Play Store

A two-sided salon/beauty-services booking platform for the Saudi Arabian market: the Bokka app lets customers discover businesses and book, reschedule, or cancel appointments, Bokka Business gives owners and staff an onboarding flow, appointment and walk-in management, a client CRM, and earnings analytics, and Bokka Admin is the internal console for platform-wide moderation and support.

The problem

Booking a beauty appointment usually meant phone tag to check availability — and providers had no software built around how appointment-based businesses actually run: staff roles, walk-ins, no-shows, repeat clients.

The solution

A live-availability booking engine with transactional conflict checking, so customers book instantly and providers run staff, walk-ins, and repeat clients from one dashboard — no more phone tag.

What I built

Built all three Flutter apps (customer, business, admin) and the shared package on Clean MVVM with Provider, get_it, and Either-based error handling.
Built the TypeScript Cloud Functions backend — the booking engine with transactional slot-conflict checking, plus the CRM and earnings-aggregation triggers.
Shipped a staff/invite role system, walk-in bookings, and PDF earnings exports for the business app.

FlutterFirebaseCloud Functions (TypeScript)ProviderGoogle Maps

MedTech2023 — Present

Dr. Sulaiman Al Habib

MedTech platform at scale — rebuilt for stability

App Store Play Store

A hospital-group mobile platform serving 1M+ users (500K+ active) in a regulated healthcare environment.

The problem

The app had grown faster than its architecture. Instability, a rising crash rate, and code that was slow and risky to change were blocking new clinical features.

The solution

A Clean Architecture rebuild, rolled out module by module with no downtime, that cut crashes and let the team ship clinical features without fear of breaking the app.

What I built

Re-architected the app to Clean Architecture across 100+ modules — incrementally, with no downtime for live users.
Built a Flutter BLE module integrating vital-signs monitors and medical devices for real-time patient data.
Integrated with HIS (Hospital Information Systems) for secure, real-time clinical data exchange.
Set code-review standards and adopted AI-assisted tooling to accelerate delivery.

FlutterDartBLEHIS / HL7Clean ArchitectureCI/CD

HR Tech2023 — 2024

Mohemm

Self-service HR — leave, attendance, and approvals on the go

App Store Play Store

An enterprise HR self-service app: employees view their profile, apply for leave and other requests (business trips, leave clearance, return from leave), and check in on attendance — all from their phone. Managers get direct access to their team and can act on requests on their behalf.

The problem

HR requests like leave applications and approvals were slow and paper/portal-bound, with no simple mobile flow for employees or their managers.

The solution

Employees handle leave, attendance, and self-service requests from their phone, and managers can act on behalf of their team — no more portal-only workflows.

What I built

Built the employee self-service flows: leave requests, attendance, and profile management.
Built the manager view — team visibility and the ability to approve requests on a team member's behalf.

Flutter

FinTech2024

EdfaPay

Flutter payment plugin, workflows, and Flutter consulting

EdfaPay needed a native Flutter plugin for their payment gateway, a handful of payment workflows built on top of it, and ongoing Flutter engineering support for their team.

The problem

EdfaPay's payment gateway had no ready-made Flutter integration, and the team needed hands-on Flutter expertise beyond a one-off integration.

The solution

A reusable Flutter plugin plus hands-on consulting gave EdfaPay's team a working payment integration and a go-to person for Flutter problems going forward.

What I built

Built a Flutter plugin wrapping the EdfaPay payment gateway for native iOS/Android integration.
Implemented several in-app payment workflows on top of the plugin.
Provided ongoing Flutter consulting and support to the EdfaPay team.

FlutterDartPlugin DevelopmentPayment Workflows

Real Estate2026

RentFlowz

Property management & profit-sharing for real-estate operators

RentFlowz is a property-management app for the UAE rental market, purpose-built for the master-lease / rent-arbitrage model — an operator leases a whole building, sub-leases the units, and splits the resulting profit among investment partners by ownership percentage through an internal wallet system.

The problem

Generic property-management tools don't model rent arbitrage or partner profit-sharing, so operators running a master-lease business had no software built around how they actually work.

The solution

An internal wallet automatically splits rent-arbitrage profit among partners by ownership percentage — software built around how master-lease operators actually run the business.

What I built

Built the app end to end on Clean MVVM architecture (ViewModel → Repository → Firebase), with typed routing and get_it dependency injection.
Designed the partner profit-sharing engine — an internal wallet system that splits rent-arbitrage profit by ownership percentage.
Integrated Firebase end to end: phone/Google/Apple auth, Firestore, Storage, FCM push, and App Check.

FlutterFirebaseClean ArchitectureProvider

Consumer / Games2026

Spellzy

A daily word-guessing game, with an admin CMS behind it

Spellzy is a Flutter word-guessing game with daily puzzles and rewards, paired with a separate web admin CMS (built on the same codebase) for managing puzzle content — backed by Supabase and Firebase.

The problem

A word game needs a steady stream of fresh puzzle content and rewards to keep players coming back daily, without engineering time spent on every content update.

The solution

A daily-puzzle loop with its own admin CMS, so new content ships without an app update or engineering involvement.

What I built

Built the game — daily puzzles, a rewards/retention loop, and the core word-guessing mechanics.
Built a separate web-only admin CMS (Supabase-backed) so puzzle content can be managed without a code deploy.
Shipped English and Swedish localization.

FlutterSupabaseFirebaseProvider

1 / 6

More work

Cloud / Platform

QLine

A queue engine that drops into any system

S

FinTech

Subcircle

Subscription & payments platform — Lemonway integration

Flutter Web

MedTech

PhysicalExam

Health examination app — support & maintenance

Play Store

Lifestyle / Bookings

Owdan

Dual-role booking platform for local wellness & outdoor experiences

App Store

Web3

Easel

NFT creator — mint and trade without crypto friction

App Store Play Store

Web3 / FinTech

Pylons

E-wallet for NFT trading, points, and airdrops

App Store Play Store

Engineering philosophy

How I build

Product first, code second.

The best technical decision is the one that serves the product and the business. I start from what needs to be true for users, then architect backward.

Architecture is a cost decision.

Clean Architecture isn’t dogma — it’s what lets a team change a 1M-user app without breaking it. I draw boundaries so the next engineer can move fast safely.

Performance is measured, not assumed.

Crash rates, frame times, cold starts, battery — I instrument first, then fix what the data points to.

Ship, then sharpen.

MVPs exist to learn. I build them lean enough to ship fast and structured enough that they don’t have to be thrown away.

Lead by raising the floor.

Code reviews, mentoring, and standards aren’t bureaucracy — they’re how a team ships consistently good work instead of occasionally great work.

Technical expertise

A stack chosen for production, not résumés

Mobile

FlutterDartKotlinSwiftAndroidiOSFlutter WebResponsive UIMaterial / Cupertino

Architecture & State

Clean ArchitectureMVVMBloc / CubitRiverpodProviderGetXDependency InjectionModular design

Backend & Cloud

FirebaseAWSREST APIsGraphQLServerPodNode.jsSupabaseDocker

Payments & Integrations

LemonwayEdfaPayStripeIn-App PurchasesApple Pay / Google PayThird-party SDK integration

Realtime & Devices

BLEWebSocketsSignalRWebRTCAgoraMaps & NavigationGeolocationPush NotificationsCamera / Media

AI & Tooling

HeyGenMuseTalkLLM / API integrationAI-assisted developmentDocker pipelines

DevOps & Delivery

CI/CDStore releasesTestFlightGitJIRAAgile / Scrum

Mobile-Specific

Deep linkingUniversal & App LinksBackground servicesOffline syncLocal databasesSecure storageApp Store & Play Store deployment

Leadership

Team leadCode reviewsMentoringClient communicationMVP deliveryTechnical coordination

What I connect

Integrations I work with

Connecting products to the systems they depend on — payments, devices, real-time, and AI.

LLemonWayEEdfaPay

StripePPayTabsMMoyasarMMyFatoorah

PayPalOOpenAI

Anthropic Claude

Google GeminiHHeyGenMMuseTalkLLiveKitAAgora

Zoom

WebRTC

Google Maps

Mapbox

Firebase

MixpanelAAmplitude

SentryMMicrosoft Clarity

GitHub ActionsCCodemagic

FastlaneSShorebird

App Store Connect

Google Play ConsoleTTestFlightLLemonWayEEdfaPay

StripePPayTabsMMoyasarMMyFatoorah

PayPalOOpenAI

Anthropic Claude

Google GeminiHHeyGenMMuseTalkLLiveKitAAgora

Zoom

WebRTC

Google Maps

Mapbox

Firebase

MixpanelAAmplitude

SentryMMicrosoft Clarity

GitHub ActionsCCodemagic

FastlaneSShorebird

App Store Connect

Google Play ConsoleTTestFlight

Payments

In-app payments
Subscriptions
Checkout flows
In-app purchases

LemonWayEdfaPayStripeJazzCashPayTabsMoyasarMyFatoorahPayPalApple/Google Pay

AI & LLM

Chatbots
AI assistants
Voice assistants
RAG systems
Image generation
Speech-to-Text
Text-to-Speech

OpenAIAnthropic ClaudeGoogle GeminiHeyGenMuseTalk

Real-time Audio / Video

Voice & video calling
Live streaming
Conferencing
Screen share

LiveKitAgoraZoomWebRTC

Maps & Location

Maps
Turn-by-turn navigation
Geolocation
Geofencing

Google MapsMapbox

Analytics & Monitoring

Event tracking
Funnel analysis
Retention analysis
A/B testing
Crash logs
Performance monitoring

Firebase AnalyticsMixpanelAmplitudeCrashlyticsSentryMicrosoft Clarity

Auth & SSO

Single Sign-On
Social login
Secure auth

Firebase AuthGoogleAppleMicrosoft

Devices & Hardware

BLE devices
Smartwatch integration
Vital-signs monitors
Health data

BLEWear OSwatchOSHealthKit / Google Fit

DevOps & CI/CD

Automated builds
Automated testing
Automated deployment
Environment management

GitHub ActionsCodemagicFastlaneShorebird

App Distribution & Stores

App Store submissions
Play Store releases
Beta testing & staged rollouts
Store optimization (ASO)

App Store ConnectGoogle Play ConsoleTestFlightFirebase App Distribution

Recommendations

What people I’ve worked with say

For founders

Sketch your product's stack

Answer a few quick questions about the MVP, app, or SaaS you're building — I'll sketch the stack I'd actually use, in under two minutes.

Step 1 of 5

What industry is it in?

Let’s build something that ships

Open to senior roles, contract work, and founder collaborations. The fastest way to reach me is email.

LinkedIn GitHub

Full-stack mobile, from MVP to a million users

Engineering that moves the product, not just the ticket

Product Architecture

Mobile Engineering

Performance Optimization

Team Leadership

MVP Development

AI Product Integration

Products I’ve shipped, and what they took

Bokka Ecosystem

More work

QLine

Subcircle

PhysicalExam

Owdan

Easel

Pylons

How I build

Product first, code second.

Architecture is a cost decision.

Performance is measured, not assumed.

Ship, then sharpen.

Lead by raising the floor.

A stack chosen for production, not résumés

Mobile

Architecture & State

Backend & Cloud

Payments & Integrations

Realtime & Devices

AI & Tooling

DevOps & Delivery

Mobile-Specific

Leadership

Integrations I work with

Payments

AI & LLM

Real-time Audio / Video

Maps & Location

Analytics & Monitoring

Auth & SSO

Devices & Hardware

DevOps & CI/CD

App Distribution & Stores

What people I’ve worked with say

Sketch your product's stack

Let’s build something that ships