Building VoiceCheap
France
Kevin Rousseau
Full-stack TypeScript engineer, SaaS founder, and AI builder based in France. I lead engineering at Copyfy.io and build VoiceCheap, an AI platform for video translation, dubbing, voice cloning, subtitles, and lip-sync.
KR
20k+
VoiceCheap users
Self-serve AI video localization platform.
$100k+
Revenue generated
Built from founder-led product, engineering, and content.
1M+
Videos translated
Public VoiceCheap platform milestone.
439
LinkedIn launch reactions
For the open-source dubbing engine release.

About

I build practical AI products where media, automation, and distribution meet. My main work is VoiceCheap: a video localization platform used by creators and businesses to translate, dub, subtitle, and publish videos in new languages. Alongside the product, I launched VoiceCheapStudio for fully managed dubbing projects, open-sourced the core dubbing pipeline, and share the build journey on YouTube and LinkedIn.

Before software, I worked in restaurants and automotive bodywork. That part of the story still matters: it shaped the work ethic, customer sense, and bias for shipping that I bring into product engineering.

Building Now

My current work centers on two connected businesses: the self-serve VoiceCheap product and the managed VoiceCheapStudio service layer.

VoiceCheap.ai

Founder & CEO

VoiceCheap.ai

AI video dubbing and translation platform for creators, educators, agencies, and businesses. Upload a video, translate it into 70+ languages, clone voices, generate subtitles, add lip-sync, and prepare content for international publishing.

20k+ users
$100k+ revenue
70+ languages
1M+ videos translated
Next.js
TypeScript
AI dubbing
Voice cloning
Lip-sync
FFmpeg
AWS
VoiceCheapStudio

Founder

VoiceCheapStudio

A fully managed AI dubbing agency built on top of the VoiceCheap stack. Clients send a video; the studio handles transcription, voice cloning, lip-sync, subtitles, QA, and multilingual delivery within days.

Managed dubbing
QA included
Multi-language delivery
Built April 2026
AI localization
Production workflow
Quality assurance
Client delivery

Work Experience

Skills

TypeScript
Next.js
React
Node.js
Python
PostgreSQL
Docker
Kubernetes
RAG
Applied AI
Voice AI
FFmpeg
AWS
Supabase
Prompt Engineering
Open Source

Public builds with real product DNA

These projects show how I think: ship the product, explain the system, then make the useful parts open enough for other builders to learn from.

dubbing-engine

The TypeScript/Bun engine behind VoiceCheap: automatic language detection, contextual translation, voice cloning, background audio separation, SmartSync timing, subtitles, and lip synchronization. The launch post reached 439 LinkedIn reactions.

TypeScript
Bun
OpenAI
ElevenLabs
FFmpeg
SmartSync
Lip-sync

MagicCuts

An open-source AI app that turns long videos into short-form clips. Built as a public challenge with Remix, Hono, Deepgram, OpenAI, FFmpeg, S3, Supabase, and Vercel/Railway deployment.

Remix
TypeScript
Hono
OpenAI
Deepgram
FFmpeg
Supabase

Content & Distribution

I care about building in public: content is how I test ideas, explain what I learn, and create leverage for the products I build.

I created four YouTube channels that failed before the current one. The lesson stuck: I love creating, testing formats, and turning the founder journey into content people can learn from.

Contact

Let's build something useful

I'm especially interested in AI products, SaaS systems, media automation, and founder-led engineering. Send a focused message on X or LinkedIn.

GitHub
LinkedIn
X
youtube