AI Trainer
· micro1Working as a contractor training and evaluating AI models, bringing senior software engineering experience to reviewing and improving model output on real-world development tasks.
OPEN TO PROJECTS & ROLES
SENIOR MOBILE ENGINEER FLUTTER
I design and ship production mobile apps with Flutter and native iOS (Swift), backed by Django and NestJS. Based in Chittagong, Bangladesh, working with teams worldwide.
Recent projects and applications
19+ PROJECTS Shown here are the public ones. More client work is under NDA.
Land Measurement on Mouza Maps for Bangladesh
Avro Phonetic Bangla Keyboard for iPhone
Offline Highway Emergency Help for Bangladesh
Your Local-First, Offline-First Document Companion
Your AI. Your Device. Your Rules.
Connect with Allah On Time, Every Time!
Complete Driving License Exam Preparation
Your Premier Danish Magazine in Spain
Joyful Shopping for Kids
Stronger Teams, Smarter Training
Your All-in-One Digital Shield
Ultimate All-in-One Printing & Scanning Solution
Native Android & iOS News App for WordPress
Complete Language Learning Ecosystem & Dictionary
Next-Gen Identity Verification Platform
VS Code Extension
Premium Fragrance Shopping Experience
Your Ultimate Automotive Service Finder
Streamlined Envato Purchase Verification
Career path
Working as a contractor training and evaluating AI models, bringing senior software engineering experience to reviewing and improving model output on real-world development tasks.
Led delivery teams and independently scoped, architected, and shipped 15+ client apps across Flutter, iOS (Swift), and full-stack — spanning SaaS platforms, news aggregators, e-commerce, and native iOS utilities. Owned the entire product lifecycle: client discovery, architecture, development, backend (Django + PostgreSQL), and App Store / Play Store launch.
Integrated enterprise-grade AI-powered identity verification (IDKit) into a Flutter SDK supporting 10,000+ ID types from 200+ countries, including face liveness detection and ID-to-selfie matching. Worked with biometric and computer-vision APIs for eKYC flows.
Produced polished, production-quality Flutter UI implementations for a YouTube channel focused on teaching advanced Flutter design and animation techniques. Built complex, responsive UI components for 200K+ subscribers.
Developed the Flutter mobile app for a real-time masjid finder now live on App Store and Play Store — featuring live Iqamah status, location-based search, and automatic DND mode during Salah. Built and integrated Firebase backend with Google Maps API.
Built internal dashboards and rebuilt legacy mobile apps from scratch, improving maintainability and extending functionality. Delivered full-cycle projects independently.
Developed and delivered client Flutter apps across multiple verticals as a contract developer. Sharpened core Flutter, Dart, and mobile architecture fundamentals.
I honed my skills in WordPress development, collaborating with diverse clients and projects to deliver high-quality solutions. This experience not only enhanced my technical proficiency but also sharpened my ability to meet clients' unique requirements and deliver outstanding results within established timelines.
Diploma in Computer Science & Engineering Shyamoli Ideal Polytechnic Institute, Bangladesh
Technical proficiencies
Land Measurement on Mouza Maps for Bangladesh
LandPro is a land measurement app built for Bangladesh. Open a mouza map, set its scale, and tap the corners of a plot to get its boundaries, side lengths, and total area in shotok, katha, and bigha. Beyond measurement, LandPro bundles 26 land tools: inheritance calculators for Muslim (Faraiz), Hindu, Buddhist, and Christian law, share (hissa) and khatian distribution calculators, a Bangla distribution-deed (bontonnama) generator with PDF preview, a digital compass with survey bearing lock, satellite and Google Maps measurement, and AutoCAD (DWG) map support. Both the Flutter apps and the backend were built by Abdul Momin Sakib. Calculations run on the device, projects can be saved, shared, and synced with an optional account, and results export to print and PDF. LandPro is available in Bangla and English on Android, Windows, and Mac, with an iPhone version on the way. DISCLAIMER: LandPro results are an aid, not an official record. Official or legal decisions require an approved surveyor or lawyer.
Avro Phonetic Bangla Keyboard for iPhone
Lekhi is a native iOS keyboard for typing Bangla with Avro Phonetic transliteration: type "ami" and get আমি. It pairs a tactile, 3D mechanical-keycap design with switch sound profiles and haptic feedback, and ships a built-in 150,000+ word dictionary with a three-card suggestion bar and autocorrect. Lekhi works fully offline, collects no data, and does not need "Allow Full Access". It includes Avro Phonetic, Probhat, and English layouts, optional Bengali numerals, a searchable Avro cheat sheet, and a Bangla typing speed test. The app is open source under the MIT License and uses the OpenBangla riti engine for transliteration.
Offline Highway Emergency Help for Bangladesh
SarakBondhu (সড়ক বন্ধু) is an offline emergency companion and roadside service directory for highway travel across Bangladesh. On remote highways, late at night, or in areas with weak network coverage, it uses the device GPS to find the nearest emergency contacts, vehicle mechanics, and medical centers without any data connection. The directory covers highway and local police stations with one-tap calling, hospitals and ambulance services, mechanics and towing, filling stations, rest stops, and accident blackspot alerts along all major national highways including N1 to N5 and the N8 Padma Bridge expressway. Optional vector map packs can be downloaded once for fully offline maps, and travelers can share their exact GPS location by SMS. The app needs no account, does no background tracking, and is ad-free.
Your Local-First, Offline-First Document Companion
DocuDone is an enterprise-grade, offline-first document utility application designed to put you in full control of your files. Built on a local-first architecture, all document actions—including high-ratio PDF compression, image-to-PDF format conversion, custom text/image watermarking, and document viewing—are executed entirely on-device with zero server-side file storage. For users who need seamless multi-device tracking, DocuDone integrates secure cross-device sync for username and gamification stats, as well as an optional direct-to-Google Drive backup mechanism with zero intermediary servers. Secure, private, and exceptionally fast, it is the ultimate tool for handling end-to-end document workflows without compromising data privacy.
Your AI. Your Device. Your Rules.
LocalMind is a premium Flutter mobile application designed for those who value privacy and performance. It connects directly to your local inference servers like LM Studio or Ollama, as well as cloud providers like OpenRouter. Built with a "Privacy First" philosophy, it features zero analytics, local-only encrypted storage via ObjectBox, and direct network traffic to your chosen servers. Key features include a polished chat interface with streaming responses, markdown rendering, persona management, and live model swapping. The app is open-source under the MIT license, allowing for full transparency and community contributions.
Connect with Allah On Time, Every Time!
Way2Masjid is a revolutionary mobile application designed to help Muslims find nearby masjids wherever they travel in Tamil Nadu. The app provides real-time Iqamah status and distance information, ensuring users never miss their congregational prayers. With features like automatic DND mode during Salah, robust filtering options, and QR code support, Way2Masjid is the only app that offers real-time Iqamah status updates. The app is completely free and includes features like car parking filters, ladies prayer room availability, Sahar & Ifthar availability, Maktab & Niswan filters, and Janaza ambulance availability.
Complete Driving License Exam Preparation
BRTA Driving Exam Prep is the ultimate companion for anyone aspiring to get a driving license in Bangladesh. This ad-free application provides a complete study guide for both written and viva exams, featuring a vast question bank, traffic sign recognition, and mock tests. It aims to not only help users pass their exams but also to foster a culture of safe driving and traffic awareness. DISCLAIMER: This independent educational tool is not affiliated with the Bangladesh Road Transport Authority (BRTA). All information is sourced from publicly available government data.
Your Premier Danish Magazine in Spain
La Danesa is the premier Danish magazine in Spain, now with a high-performance Flutter mobile app. Enjoy native reading with custom typography, stunning visuals, and intuitive navigation that complements the magazine website perfectly.
Joyful Shopping for Kids
The Toys Boutique brings joy to online shopping with a playful, colorful interface designed for kids and parents alike. Discover age-appropriate toys, create wishlists, and enjoy a seamless checkout experience.
Stronger Teams, Smarter Training
Spaitr was born from a simple observation: talented teams were falling short not because they lacked skill, but because off-field work wasn't getting done. It is a platform that brings the same intensity, structure, and team spirit from the field into every workout. Features include an AI-powered coach that adapts as you improve, team management tools for coaches to assign workouts and track progress, and comprehensive performance analytics. The project utilizes a custom TinyLlama model trained for specialized coaching interactions, with a Supabase backend and a cross-platform Flutter mobile application.
Your All-in-One Digital Shield
AVO Mobile Security ensures your device stays secure, your personal information remains private, and your online experience is protected. Whether you're browsing, checking network security, or safeguarding against breaches, AVO has you covered. The app features comprehensive security scanning, real-time threat detection, advanced breach monitoring, WiFi security verification, and unlimited VPN for secure browsing. With an intuitive and beautifully designed interface, AVO delivers robust protection for Android and iOS devices with cutting-edge features and proactive monitoring.
Ultimate All-in-One Printing & Scanning Solution
Print Master: AirPrint & Scan is a comprehensive all-in-one productivity solution for iOS designed to streamline document management. The app integrates a high-performance mobile scanner with OCR capabilities, a robust PDF editor, and seamless wireless printing support for all major hardware brands, including HP, Canon, and Epson. By combining advanced features like file compression, format conversion, and digital signing into a single, intuitive interface, Print Master eliminates the need for multiple disparate apps, providing users with a professional-grade tool for handling end-to-end document workflows directly from their iPhone or iPad.
Native Android & iOS News App for WordPress
This is a Template made by me. This innovative app allows you to effortlessly convert your WordPress-based website into a stunning native Android and iOS news, blog, or magazine app. With just a few clicks, you can have a sleek and modern mobile app that syncs seamlessly with your existing admin panel. Updated & Tested for Android 15 & iOS 18 (Flutter 3.32.7), NewsPro offers professional-grade features, advanced caching for lightning-fast speeds, and requires no extra admin panel—everything is managed directly from your WordPress dashboard.
Complete Language Learning Ecosystem & Dictionary
Whether you are a university student preparing for highly competitive exams, a professional looking to rapidly improve your spoken English, or a traveler navigating Bangladesh, শব্দ is the only application you will ever need. Unlike older, outdated dictionaries that rely on highly inaccurate machine translations or frequently mix in incorrect Hindi vocabulary, our comprehensive database is meticulously curated and native-verified to ensure absolute linguistic authenticity. But flawless word translation is only the beginning of your journey. শব্দ is engineered from the ground up as a complete language-learning ecosystem, transforming passive reading into active, lifelong memory retention through advanced study tools and gamified flashcards.
Next-Gen Identity Verification Platform
IDKit is a next-generation identity verification platform designed to transform your KYC process. It offers enterprise-grade security powered by cutting-edge AI and biometric technology. With support for over 10,000 ID types from 200+ countries, it ensures secure, compliant, and frictionless user verification. Key capabilities include real-time document authentication, AI-powered face liveness detection to prevent spoofing, and smart ID-to-selfie matching with 99.9% accuracy.
VS Code Extension
Flutter Component Separator is a Visual Studio Code extension designed to streamline the organization of Flutter widget files. It automatically separates component classes into individual files, making your Flutter projects more modular and easier to maintain. Key features include automatically identifying the main widget in a Flutter file, separating other widget classes into individual files in a `components` folder, and updating import statements in the main file. It supports any Flutter file structure and significantly speeds up refactoring and code organization.
Premium Fragrance Shopping Experience
SofiaRose is a sophisticated e-commerce platform designed for premium fragrance retailers. It features an elegant interface that reflects luxury, seamless shopping cart functionality, and secure payment processing for an effortless customer journey.
Your Ultimate Automotive Service Finder
Mr. Auto simplifies finding automotive services with advanced search, smart filtering, and location-based discovery. Whether you need a mechanic, dealer, or car wash, Mr. Auto connects you with the right providers instantly.
Streamlined Envato Purchase Verification
Envato Verifier simplifies purchase verification for Envato marketplace users. Quickly validate codes, access purchase history, and manage your digital assets with a clean, user-friendly tool built for efficiency.
Quick answers
Abdul Momin Sakib is a senior mobile and full-stack engineer based in Chittagong, Bangladesh, with 7+ years of experience shipping production apps. He specializes in Flutter and native iOS (Swift), with backends in Django and NestJS. Since September 2026 he has also worked as a contract AI Trainer at micro1.
Recent work includes LandPro (land measurement on mouza maps for Bangladesh, on Android, Windows, and Mac), Lekhi (a native Swift Avro Phonetic Bangla keyboard for iPhone), DocuDone (an offline-first PDF and document toolkit), LocalMind (an open-source Flutter client for local LLM servers with 10K+ installs), and Way2Masjid (a masjid finder with real-time Iqamah status and 100K+ installs). He has shipped 15+ production apps in total; some client work is under NDA and not listed publicly.
Flutter and Dart, Swift for native iOS, Kotlin, and React Native on mobile; Bloc and Riverpod for state management; Django, NestJS, Node.js, PostgreSQL, Firebase, and Supabase on the backend; plus AI integrations with OpenAI, OpenRouter, Ollama, and on-device ML (Core ML, TFLite). He handles release pipelines with GitHub Actions, Fastlane, and Shorebird.
Yes. He is open to full-time, contract, and freelance work, remote worldwide. He works from Chittagong, Bangladesh (UTC+6) with US and EU time zone overlap, and has full professional English proficiency. The fastest way to reach him is email at [email protected], or WhatsApp and Telegram from the contact section of momin.pro.
End-to-end mobile app development: product scoping, UI implementation, Flutter or native iOS development, backend and API work, AI feature integration, and App Store and Google Play launch. He also rebuilds and modernizes existing apps.
He holds a Diploma in Computer Science & Engineering from Shyamoli Ideal Polytechnic Institute, Bangladesh, and has worked professionally in software since 2018.
Get in touch
Senior Flutter & iOS Engineer · Chittagong, Bangladesh · 7+ years shipping pixel-perfect, production-ready mobile apps · Specialized in Flutter UI, native iOS, and AI integrations · Available for full-time & freelance roles worldwide.