Hi, I'm Huy — Vietnam · Remote worldwide
I build custom tools in Go, Rust, Python and Node.js — phone farms, antidetect browsers, reverse-engineered APIs and automation that runs at scale.
A typical day — reversing an app's API, running a phone farm, launching an antidetect profile.
01 — About
I'm a freelance developer who builds the kind of software most developers avoid: systems that control hundreds of phones, browsers that pass fingerprint checks, and clients for apps that were never meant to have one.
I work across the whole stack — from reversing an Android app or a Chromium internals change, to a native Rust desktop app and the data & AI pipeline behind it. You get a tool that works in production, not a proof of concept.
02 — Services
What I specialise in
Six areas I work in every day. Client projects stay confidential — happy to discuss relevant experience privately.
Phone Farm Systems
Control and automate fleets of real Android devices and emulators from one place.
- Central control panel for hundreds of devices
- Live screen view, bulk actions and task scheduling
- Per-device proxy, identity and app management
Antidetect Chromium
Custom Chromium builds and profile managers that keep every account isolated.
- Canvas, WebGL, audio, fonts, WebRTC & timezone control
- Proxy per profile, cookie import/export, team sync
- Automation-ready via CDP, Playwright and Puppeteer
App Reverse Engineering
Understand how Android, iOS, Windows and web apps talk to their servers.
- Traffic interception and SSL pinning analysis
- Request signing, tokens and encryption reproduced
- Clean SDK or API delivered for your own tools
Native & Desktop Apps
Fast, polished software your users can install and run.
- Rust, Go and C++ for performance-critical cores
- Tauri / Electron desktop apps with installer
- Licensing, auto-update and crash reporting
Data Collection & AI Data
Reliable data at scale, structured for analysis and AI.
- Scrapers and crawlers for websites and apps
- Cleaning, deduplication and scheduled exports
- Datasets ready for training, RAG or dashboards
AI Integration & Agents
Put AI to work inside your tools and workflows.
- LLM workflows and autonomous agents
- Text, image and voice generation & cloning
- AI-driven content and account automation
03 — Languages
The right language for each tool
I pick the stack by what the tool needs — speed, concurrency, or fast iteration.
Go
Concurrent automation, backends, CLI tools and phone farm servers.
Rust
Fast, safe native apps and performance-critical cores.
Python
Reverse engineering, scraping, data processing and AI.
TypeScript
Browser automation, Node.js services and web dashboards.
C++
Chromium patches, native hooks and low-level work.
Kotlin / Java
Android tooling, device agents and app analysis.
04 — Stack
Tools & techniques
05 — Process
How we'll work together
- 01
Brief
You describe the task. I check feasibility and propose the simplest solution.
- 02
Research
Analyse the target app or platform, its API and protections.
- 03
Build
Develop with regular demos so you see progress early.
- 04
Deliver & support
Hand over a ready-to-run tool, plus fixes when platforms change.
06 — FAQ
Do you work freelance or full-time?
Freelance, remote, with clients worldwide. I take fixed-price projects as well as ongoing work and maintenance.
What kind of projects do you take?
Phone farms, antidetect browsers, app reverse engineering, private API clients, scrapers, AI tools and the desktop or web apps around them. If you're unsure, just describe the task.
What do I receive at the end?
A working tool ready to use — an installer, a web app, an SDK, or source code with a short guide, depending on what we agree on.
What happens when the target app updates?
Apps and platforms change often. I offer maintenance so your tool keeps working, and I build with that in mind from day one.
Is my project kept confidential?
Yes. Client projects are never published or reused, and I'm happy to sign an NDA.
How do we start?
Message me on Telegram or email with a short description. I usually reply within a few hours.