À propos de Taegyu
Fractional Tech Co-founder & AI/Blockchain Product Builder
I help founders/companies turn ideas into validated AI/Blockchain products and market-ready MVPs fast.
Unlike traditional agencies that only build what you ask for, I work as a fractional technical co-founder. My focus is not just coding, but making sure what we build actually survives in the market.
I’ve built multiple AI/Blockchain products from scratch and launched them with real traction. My work combines product strategy, rapid MVP development, and go-to-market execution.
What I can help you with:
- MVP development (LLM apps, AI SaaS, automation tools)
- Startup idea validation and product strategy
- Full-stack development (Next.js, Firebase, APIs, AI pipelines)
- Rapid prototypes shipped in weeks, not months
- Go-to-market systems (landing pages, automation, growth loops)
Previously I:
- Founded a startup and raised $350K pre-seed + government grant
- Built multiple AI/Blockchain products (LLM pipelines, marketplaces, automation tools)
- Achieved 1M+ impressions and 30K landing page onboarding within 1st month
- Delivered $1.3M annual cost reduction at Samsung Electronics
- Selected as a Perplexity AI Business Fellow
My approach is simple:
Validate fast → build lean → launch early → iterate with real users.
If you’re a founder, domain expert, or company looking to launch an AI/Blockchain product quickly, I’d be happy to collaborate.
Let’s build something that actually works in the real world. 🚀
Coréen
Bilingue ou natif
Français
Capacité professionnelle complète
Anglais
Capacité professionnelle complète
En télétravail uniquement
Travaille majoritairement à distance
Expériences
- JTG.aiProduct Builder & Studio FounderAGENCE & SSIIjuillet 2024 - Aujourd'hui (1 an et 11 mois)Paris, FranceA boutique product studio providing fractional co-founder and full-cycle execution services (PM + Design + Dev + GTM) to startups and enterprises. Simultaneously built and launched 4 products across AI and blockchain from 0→1.● Vibounder — AI-native PM tool · Agentic workflow generating Lean Canvas, PRDs, and roadmaps via iterative AI dialogue. Built custom MCP server for real-time strategy↔IDE sync.● TSF — Tokenized seller-financing marketplace · Solidity smart contracts (pro-rata yield, Merkle verification) on Mantle + 40-page full-stack marketplace with hybrid on/off-chain compliance architecture.● Genkle — English speaking diary app · Shipped AI features (STT, grammar, summarization, image gen) + automated Reddit acquisition pipeline.● Trachemy — Co-founder matching platform · 0→250 users and 40+ pilot projects in first month via Bubble.io.
- PerplexityPerplexity AI Business FellowshipAGENCE & SSIImars 2025 - août 2025 (5 mois)San Francisco, États-UnisExplored enterprise GenAI adoption, building scalable prototypes and running fast learning cycles.● Identified inefficiencies in job-matching funnels (95% irrelevant listings).● Built Fine-Tune Job Agent (FTJA): LLM + vector search with 95%+ accuracy at $0.01/query.● Designed evaluation framework, feedback loop, and metrics for continuous iteration.
- Samsung Electronics FranceChef de ProjetHIGH TECHavril 2023 - juin 2024 (1 an et 2 mois)Paris, FranceWorked cross-functionally with engineering, service, and HQ teams to improve product quality and reduce service cost across EU markets.● Collaborated with engineering, service, and HQ teams across EU/Asia on quality initiatives.● Analyzed ERP and field data to identify root causes of service cost escalation.● Improved parts management processes, achieving $1.3M YoY service cost reduction.
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Formations
- Master Entrepreneuriat & Gestion de Projet(VAE partielle)Université Paris-Panthéon-Assas2024Master Entrepreneuriat & Gestion de Projet
- Licence Géographie & AménagementSorbonne Université2019Licence Géographie & Aménagement
Certifications
- Digital Product Management: Modern FundamentalsUniversity of Virginia2024
- Blockchain RevolutionINSEAD2022