> hello, world. I’m
Farhan Isteak Taseen
aka tas33n full-stack engineer Chittagong, Bangladesh
I build full-stack products, AI agents, LLM infrastructure, browser automation, reverse-engineered APIs, Android tooling
from the interface down to the infrastructure, and open-source the tools I wish existed.
Hi, I’m Farhan. I build software people use, and systems that run themselves.
I’m Farhan Isteak Taseen. Online I go by tas33n. I’m an engineer from Chittagong, Bangladesh, and I’ve been building software for clients since 2018, years before I started my CSE degree at East West University.
I like owning the whole thing: the interface, the API and database behind it, and the automation that keeps it running without me. That started with websites and Telegram bots. Today it’s course platforms, dashboards, LLM gateways and AI agents that handle real customers.
When there’s no API, I build one. When a task repeats, I automate it. When a tool doesn’t exist, I build it and usually open-source it.
- 2018 First client work
Started freelancing: websites, landing pages and small web apps.
- 2020 Bots & automation
Telegram, Discord and WhatsApp bots, scrapers and browser automation. Started publishing open source.
- 2023 CSE at EWU
Began a BSc in Computer Science & Engineering while shipping full-stack platforms for clients.
- 2025 Products & AI
Next.js platforms for clients, an edge image host on Telegram storage and a GPT-4o manga translator.
- 2026 Agents & infrastructure
Omnichannel sales agents, an LLM gateway, MCP servers, on-device Android automation and patched apps.
Six disciplines. One engineer.
Pick a domain, or tap a node in the sphere above. The bars count how many of my 25 recent projects actually use each tool. They come from the code, not a self-rating.
Full-stack web
Products end to end: interface, API, database, auth, payments and deployment. Most of what I ship starts here.
Used in shipped projects
- TypeScript 12 projects
- Node.js 7 projects
- React 6 projects
- MongoDB 5 projects
- Next.js 4 projects
- Express 4 projects
- Tailwind 4 projects
- Supabase 3 projects
Also in the toolbox
Recent builds
AI & agents
LLM features that do real work: agents with tools and memory, vision pipelines, and the gateways and MCP servers behind them.
Used in shipped projects
- Gemini 3 projects
- OpenRouter 3 projects
- OpenAI 3 projects
- MCP 3 projects
- Tool calling 1 project
- Vision OCR 1 project
Also in the toolbox
Automation & bots
Bots, scrapers and headless workers that take repetitive work off people, on schedules and queues that keep running.
Used in shipped projects
- Telegram 6 projects
- Playwright 2 projects
- Baileys 2 projects
- Camoufox 1 project
- grammY 1 project
- GramJS 1 project
Also in the toolbox
Recent builds
Reverse engineering
When there’s no API, I build one from web traffic, binary protocols or Android apps, and document what I find.
Used in shipped projects
- WebSockets 3 projects
- Protocol decoding 3 projects
- Private API clients 3 projects
- APK patching 1 project
- MTProto 1 project
Also in the toolbox
Mobile & desktop
Native and cross-platform apps and extensions for when the browser isn’t enough.
Used in shipped projects
- Android 3 projects
- Kotlin 2 projects
- Flutter 2 projects
- Accessibility Service 1 project
- Tauri v2 1 project
- WXT 1 project
- QuickJS 1 project
- Telegram Mini Apps 1 project
Also in the toolbox
Cloud & infra
Shipping cheaply and keeping it up: edge workers, containers, CI and tests.
Used in shipped projects
- Docker 6 projects
- Cloudflare 4 projects
- Workers 3 projects
- Vitest 2 projects
- GitHub Actions 1 project
- Vercel 1 project
Also in the toolbox
Selected builds
Full-stack platforms, AI systems and automation from the last two years. Private client work is shown by what it does, without names or source.
Omnichannel AI Sales Agent
An autonomous LLM agent that sells, verifies payments and delivers orders across WhatsApp, Messenger and Instagram.
EWU Faculty Reviews
Verified-student platform for rating and reviewing university faculty, with an admin dashboard.
Unified LLM Gateway
One API for Claude, GPT and Gemini — OpenAI- and Anthropic-compatible, with plans, usage metering and an admin console.
Miyomi
A community directory of manga, anime and light-novel apps and extension repos — 200+ stars.
Browser Automation Suite
Extension, desktop app and API for automating long, multi-step web workflows — plus stealth Playwright engines.
Manga Translator
Batch-translates manga pages with vision OCR and GPT-4o, with live progress and ZIP export.
Android automation: DroidWright & MCP
On-device JavaScript automation for Android, and a Playwright-style API that drives phones through MCP.
Telegram Image Hosting
Self-hosted image and short-video hosting on Telegram storage and Cloudflare’s edge, with an admin console.
Portfolio & Course Platform
Portfolio, paid courses, student progress and admin tools for a graphic designer and video editor.
Digital Commerce Platform
Storefront, inventory, ops bots and an omnichannel inbox for a digital-subscription business.
Public work people use
Apps, libraries and tools I maintain in the open.
- 212
Miyomi
miyomiorg/MiyomiA community directory of manga, anime and light-novel apps and extension repos — 200+ stars.
- 23
Android automation
tas33n/DroidWrightOn-device JavaScript automation for Android, and a Playwright-style API that drives phones through MCP.
- 23
Telegram Image Hosting
tas33n/telegram-image-hostingSelf-hosted image and short-video hosting on Telegram storage and Cloudflare’s edge, with an admin console.
- 15
Google Drive CDN Worker
tas33n/Google-drive-cdn-workerTurns Google Drive into an authenticated upload API and a global CDN on Cloudflare Workers.
- new
Facebook API MCP
tas33n/facebook-api-mcpA Node.js client for Facebook & Messenger web protocols, plus a typed Model Context Protocol server so AI agents can use them.
- new
Facebook Extended
tas33n/Facebook-ExtendedA no-root patched Facebook for Android: cleaner feed, ad filtering, media download and in-app settings.
- new
Suno Downloader
tas33n/suno-downloaderZero-dependency TypeScript library and web app for downloading original Suno audio, with optional MP3/WAV conversion.
- 9
Goat WhatsApp Bot
tas33n/Goat-WhatsApp-BotA clean, modular WhatsApp bot framework on Baileys with a command and event system.
- 4
OpenNEIR
tas33n/OpenNEIROpen-source Android app that checks a phone’s IMEI against Bangladesh’s NEIR register without manual SMS steps.
Shipping most days
Most of my work happens in private client repositories, so here are the totals, synced from GitHub at build time.
- TypeScript 45.4%
- JavaScript 41.6%
- PHP 7.6%
- Kotlin 3.6%
- Dart 1%
- Python 0.6%
- Astro 0.2%
- Rust 0.1%
Let’s build what’s next.
I take on freelance projects: full-stack web apps, AI agents and LLM integrations, automation, scrapers and reverse-engineered APIs. Tell me what you’re building. I usually reply within 24 hours.
Available for freelance · not taking full-time roles- 01 Scope
A short call or chat to pin down the users, the workflow and what “done” means.
- 02 Prototype
A working slice in days, not weeks: real data, real screens, real integrations.
- 03 Harden
Auth, retries, rate limits, logging, admin tools and a dashboard you can operate.
- 04 Hand over
Deployment on edge, Docker or a VPS, plus docs and support while it settles in.