About me

Hi, I'm Bayajit Islam

I'm an AI Mobile App Developer based in Dhaka, Bangladesh, with 2+ years of hands-on experience building production cross-platform apps for iOS, Android & Desktop with Flutter, paired with scalable FastAPI / Python backends, Next.js, and DevOps.

My story

I'm originally from Jhenaigati, Sherpur, now based in Dhaka, Bangladesh. In 2024, I began working with international clients on Fiverr providing responsive web development and technical SEO — designing fast, accessible websites using modern web stacks like Next.js and helping businesses maximize search visibility and conversions.

Over the last 2+ years of hands-on engineering, my primary focus evolved into mobile: architecting high-performance, AI-powered mobile applications for iOS and Android using Flutter and Dart. For the backend, I build fast, asynchronous RESTful APIs and real-time LLM integrations using FastAPI and Python, paired with containerized DevOps workflows on Linux VPS and Docker.

From 2025 to 2026, I worked as a Mobile App Developer at a software agency, where I built and maintained production apps that real users depend on every day. That experience sharpened my ability to write scalable architecture, prevent memory leaks, and ship under real-world deadlines.

Today, I work full-time as a freelance developer on Fiverr and collaborate directly with global clients via contact@bayajitislam.com. I partner with founders, businesses, and startups worldwide to turn ambitious product visions into production-ready software.

Tools I work with

Flutter
Dart
FastAPI
Python
Next.js
Docker
Firebase
Git

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.