AI-Powered Mobile Apps & Scalable Systems

Building AI-Powered Apps That Feel Native on Every Device

Hi, I'm Bayajit Islam — AI Mobile App Developer with 2+ years of hands-on experience, crafting high-performance apps for iOS, Android & Desktop with Python & FastAPI backends.

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I build AI-powered apps that feel native on iOS, Android & Desktop.
Open to remote work and global clients.
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Flutter · Dart · Python · FastAPI · Docker
My stack
DartFlutterPythonFastAPI
PostgreSQLREST APIDockerGit
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Passionate about clean UI and scalable mobile architecture.
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Inside look
Currently architecting AI-powered mobile & cloud systems for global clients.
Want to build something together?

What I Offer

Services Engineered for Scale & Impact

From full-cycle AI mobile apps to high-throughput Python backends, technical SEO, and zero-downtime cloud deployments — here is how I partner with founders and teams to build production-ready digital products.

Core Specialty

AI Mobile App Development

iOS, Android & Desktop (Flutter & Dart)

Full-cycle cross-platform mobile development that looks, feels, and performs 100% native at 120 FPS. Integrating real-time conversational LLMs, on-device AI models, vision/voice capabilities, and robust offline-first synchronization.

  • Custom cross-platform iOS & Android mobile apps
  • Real-time AI/LLM streaming (OpenAI, Gemini, Anthropic)
  • Clean Architecture with BLoC & Riverpod
  • Offline-first local caching (SQLite, Hive)
  • App Store & Google Play release submission
Email Inquiry Order on Fiverr
High Performance

Web Development & Technical SEO

High-Speed Modern Web Apps & Portfolios

Modern, responsive web applications, SaaS dashboards, and high-converting landing pages built with Next.js, React, and TypeScript. Engineered with technical SEO, Schema.org entity structured data, and Core Web Vitals 95+ optimization.

  • Modern responsive web apps (Next.js 14, React, TypeScript)
  • Technical SEO & Schema.org JSON-LD entity graph
  • Core Web Vitals & PageSpeed score optimization
  • Interactive 3D graphics & fluid micro-animations
  • Conversion-optimized responsive UI/UX
Email Inquiry Order on Fiverr
Scalable Systems

FastAPI & Python Backend Architecture

High-Throughput Async APIs & AI Endpoints

Scalable backend architectures and RESTful/WebSocket microservices built with Python and FastAPI. Engineered with Pydantic v2 data validation, PostgreSQL relational persistence, and Server-Sent Events (SSE) for low-latency AI streaming.

  • Asynchronous RESTful APIs & real-time WebSockets
  • Streaming AI responses with Server-Sent Events (SSE)
  • PostgreSQL database modeling & async SQLAlchemy
  • JWT authentication & Role-Based Access Control (RBAC)
  • Redis caching & Celery background task processing
Email Inquiry Order on Fiverr
DevOps & Cloud

Project Deployment & DevOps

Cloud Hosting, Docker & Zero-Downtime CI/CD

End-to-end cloud server configuration and deployment on Linux cloud VPS (Hetzner, DigitalOcean, Linode, AWS). Docker containerization, automated GitHub Actions CI/CD pipelines, SSL automation with Caddy/Nginx, and domain DNS setup.

  • Linux cloud VPS server setup & hardening (Ubuntu)
  • Docker & Docker Compose containerization
  • Automated GitHub Actions CI/CD deployment
  • Reverse proxy setup with automatic SSL (Caddy / Nginx)
  • Domain DNS management & zero-downtime rollouts
Email Inquiry Order on Fiverr

Need a custom bundle (e.g. Flutter mobile app + FastAPI backend + DevOps setup)?

Request Custom Quote (contact@bayajitislam.com)Learn More About Me →

A small selection of recent projects

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Violet – AI Support Platform

Violet – AI Support Platform

AI-powered platform for health and social care professionals in Scotland. Provides guidance, conversational support, and care practice resources for authorised organisations.

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Google PlayApp StoreMicrosoft Store
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Avo Balance – Smart Meal Planner

Avo Balance – Smart Meal Planner

AI-powered meal plan organizer. Upload your diet plan, get a smart daily schedule, meal reminders, tracking, and an auto-generated grocery list — all in one place.

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Google Play
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LotsofNetwork — Network Utility Suite

LotsofNetwork — Network Utility Suite

Fast, privacy-conscious network diagnostics platform built with Next.js and Node.js. Features live IP Lookup, DNS Resolver, CIDR Subnet Calculator, Port Scanner, and WHOIS domain querying.

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Live Tool

Kind words from satisfied clients

  • I was very demanding in the quality of the work. The design was completed with exactly the quality and elements I requested. The team was very accommodating to all my requests, even the smallest ones. Excellent work.
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    MassimoClient — Avo Balance
  • Great work. Would definitely work with him again.
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    RichardClient — Violet

My work experience

My approach

Planning & Strategy

We start by breaking down your vision: user journeys, AI/LLM integration needs, cross-platform technical scope (iOS, Android, or Web), and database models before writing a single line of code.

Mobile & Web Engineering

Transforming wireframes into production-ready software: fluid 120 FPS Flutter apps for iOS & Android, responsive Next.js web applications, clean state management, and pixel-perfect design.

AI Backends & DevOps Launch

Connecting high-throughput FastAPI backends, streaming real-time AI responses, configuring Docker containers on Linux VPS, and managing store submissions for a reliable launch.