Mualif Ulil Misbakh

Semarang, Indonesia · Working Globally (GMT+7)

Crafting Mobile Apps & Web Platforms with Extreme Polish.

Senior engineer specializing in Flutter (iOS & Android) and Next.js + Supabase backends. Delivering fast, resilient production applications for founders globally.

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Available for Q4 2026 Contracts

Years in Production

From seed MVPs to enterprise apps

24+

Delivered on Upwork

Top-rated international client track

60 FPS

Native Mobile UI

Compiled Dart for iOS & Android

100%

Direct Senior Code

Zero agency overhead or handoffs

Production Portfolio

Selected Production Work.

Flutter Mobile (iOS & Android)

Servio

On-Demand Home Services & Real-Time Dispatch Ecosystem

✓ 40% faster technician dispatch latency

A dual-sided on-demand dispatch ecosystem connecting homeowners with specialized technicians. Built with real-time Google Maps geolocation, asynchronous job dispatch queues, and offline-first state synchronization.

Real-time GPS geofencing & live technician route tracking

Offline-first SQLite queue preventing job loss during connection dips

Custom responsive Flutter UI with 60fps gesture handling

FlutterDartFirebaseGoogle Maps APIREST

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Full-Stack Web (Next.js & Supabase)

Kasirin

Multi-Outlet Cloud POS & Real-Time Inventory Control

✓ Sub-100ms checkout & real-time branch sync

High-speed retail Point of Sale system designed for fast cashier operations and multi-branch stock reconciliation. Implements sub-100ms item lookups, offline transaction caching, and multi-tenant Row-Level Security.

Sub-100ms barcode scanning with local buffer queue

Multi-outlet stock deduction with automated low-inventory alerts

Row-Level Security protecting branch-level financials

Next.jsTypeScriptSupabasePostgreSQLTailwind CSS

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Flutter Mobile (iOS & Android)

Armada.id

Logistics Fleet Telematics & Vehicle Tracking App

✓ Live fleet GPS telemetry with 0 packet loss

Field telematics and driver logistics application. Provides live vehicle route playback, driver status telemetry, and automated delivery milestone verification.

Continuous background location tracking with battery optimization

Driver trip milestone confirmations with signature capture

Cross-platform parity across budget Android and flagship iOS devices

FlutterDartGoogle MapsBackground GeolocationREST

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Full-Stack Web (Next.js & Supabase)

Reservo

Smart Appointment Booking & Multi-Staff SaaS

✓ Zero double-booking calendar collisions

Automated appointment booking platform featuring multi-provider timezone conversion, automated calendar collision prevention, and upfront deposit capture via Stripe.

Stripe payment integration with automated deposit & refund workflows

Millisecond calendar collision locks across concurrent sessions

Self-service booking portal with automated email confirmations

Next.jsSupabaseStripe APIPostgreSQLTailwind CSS

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Full-Stack Web (Next.js & Supabase)

Sentra

B2B Enterprise Operations & Multi-Role ERP Platform

✓ Enterprise-grade RBAC & immutable audit trails

Corporate resource planning and workflow management dashboard engineered for compliance. Features tiered Role-Based Access Control, multi-stage approval pipelines, and immutable audit logs.

Granular department permissions with role inheritance

Multi-level approval queues with audit log trail

Optimized PostgreSQL reporting queries across millions of rows

Next.jsTypeScriptPostgreSQLTailwind CSS

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Engineering Capabilities

Disciplined Architecture. Zero Technical Debt.

Every product is engineered with strict type safety, modular structures, and automated release pipelines so your business can scale without rewrites.

Mobile First (Flutter)

Native 60fps execution on iOS & Android

Single codebase with 100% platform parity

Clean architecture with BLoC & Riverpod

Offline-first local caching (SQLite / Hive)

App Store & Google Play release pipelines

Web & Backend (Next.js)

Server-driven, resilient B2B platforms

Next.js App Router & React Server Components

Supabase PostgreSQL with Row-Level Security

Stripe & payment gateway integrations

Edge runtime & sub-second API execution

Production Hardening

Refactoring prototypes into clean architecture

Auditing AI code (Cursor, Lovable, v0) for production release

Eliminating store rejections & API memory leaks

Database schema normalization & index optimization

Zero technical debt handoff with clean documentation

Ready to build your next release?

Direct engineering collaboration. Whether you need a Flutter app built from scratch, a rapid Next.js MVP, or a quick store fix, let's discuss.

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Direct engineer contact · Average response time < 12 hours