# T J **Product Builder** — Paris, France > Product builder and former founder who takes products from 0 to 1, with a focus on AI-driven tools. Cut $1.3M in yearly service costs at Samsung and has raised over $400K across ventures. Career Archetype: **Launchpad Navigator** (HS-DG) — One of the first Launchpad Navigators on Saywise ## Links - LinkedIn: https://linkedin.com/in/taegyujeong - JTG.ai: https://www.jtg-ai.com/ ## Experience ### Perplexity AI Business Fellowship, Perplexity (2025-03 – 2025-08) Remote · Explored enterprise GenAI adoption by building scalable prototypes. Built Fine-Tune Job Agent (FTJA) combining an LLM with vector search, reaching 95%+ accuracy at $0.01 per query. Designed an evaluation framework and feedback loop for continuous iteration. ### Founder, Trachemy (2024-11 – 2025-03) A co-founder matching platform that builds trust through short-term pilot projects and AI-generated elevator pitches. - Built full MVP using Bubble.io with end-to-end integrations (OpenAI, Stripe, Postmark, Google Analytics) and implemented RAG pipeline to generate personalized elevator pitches, addressing user reluctance to share ideas publicly - Executed multi-channel growth strategy across 8+ platforms using AI-generated, voice-cloned demo videos to reduce content creation costs while maintaining high engagement - Achieved rapid user acquisition and validation with 250+ users and 40+ pilot projects launched within the first month, proving product-market fit ### Product Builder & Studio Founder, JTG.ai (2024-07 – present) London Area, United Kingdom · Leads product discovery and builds MVPs across AI and blockchain (RWA). Rebuilt FTJA as an open-source local agent skill that removes platform-paid LLM costs, and built an automated Python/LLM pipeline that scrapes and scores tech job listings. Also built Vibounder, an AI product management tool, and TSF, a tokenized seller-financing marketplace on Mantle. ### Project Manager, Samsung Electronics France (2023-04 – 2024-06) St.-Ouen, Île-de-France, France · Worked across engineering, service, and HQ teams to improve product quality and cut service costs across EU markets. Analyzed ERP and field data to find root causes of rising service cost. Reworked parts management processes, which delivered $1.3M in year-over-year service cost reduction. ### Product Manager, freelance (2022-02 – 2022-07) Remote · Supported early-stage startup founders with product discovery and MVP definition. Ran JTBD interviews, market analysis, and feature prioritization. Wrote PRDs and roadmaps that shortened iteration cycles. ### Founder, PLACES (2020-03 – 2022-02) South Korea and Canada · Built a real-time nearby promotion platform. Raised $350K pre-seed and a $50K government grant. Shipped iOS and Android apps by managing outsourced teams and QA, and onboarded 100+ retailers while validating product-market fit through retention data. ### Interpreter & translator, CUPIA (2019-09 – 2020-03) Cameroon · CUPIA is established by the Korea Customs Service (KCS) and Korea’s largest professional non-profit organization specialized in customs solution. - Interpreted meetings between CUPIA IT division and shipping companies, airlines, Cameroon government agencies - Translated official documents and inquiries. ### Urban Study Intern, UDAXII (2017-08 – 2017-10) Montreal, Quebec, Canada · - Researched the context of the client's vacant lot - Drafted a report of the vacant lot from macroscale to microscale - Proposed scenarios for a vacant lot ### Architecture firm Intern, GHArchitecte (2016-04 – 2016-05) Paris Area, France · - Researched a given site in the center of Han liver, Seoul in order to participate in the International Architecture Competition organized by Seoul City - Drafted a presentation for the collaboration with different experts including architects, engineers, and designers. ## Education ### Master's degree in Entrepreneurship and Project management, Paris-Pantheon-Assas University (2023-09 – 2024-06) Partial recognition of professional experience ### Bachelor's degree in Geography & Urban Planning, Sorbonne University (2014-09 – 2019-06) ### Diplôme Universitaire d'Etudes Françaises (DUEF niveau 1), Université Sorbonne Nouvelle (2013-01 – 2014-01) ## Projects ### FTJA v2 Open-source job-search agent skill · A local Claude Code and Codex skill that scores job fit using each user's career files and preferences. Includes a staged pipeline covering scraping, deterministic filtering, evidence extraction, and rubric-based assessment, plus a one-prompt onboarding flow with a synchronized web view. ### Product Builder Jobs AI-driven job board and eval pipeline · An automated Python and LLM pipeline that scrapes, evaluates, and curates specialized tech roles. Distribution across LinkedIn, Reddit, and X drives organic inbound at zero cost. The responsive job board MVP has launched. ### Vibounder AI-native PM tool for solopreneurs · An agentic workflow that builds a Lean Canvas through AI dialogue and generates PRDs and dynamic roadmaps. Includes a custom MCP server that syncs strategy docs with the IDE in real time. ### TSF Tokenized seller-financing marketplace · Solidity contracts for multi-note investment pools with pro-rata yield distribution, Merkle tree verification, and automated dividends on Mantle. A hybrid design anchors cryptographic hashes on-chain and keeps regulated data off-chain. ### Genkle English speaking diary web app · Built core AI features including speech-to-text, grammar correction, native phrasing, summarization, and image generation. Ran UX iterations based on funnel data and automated a Reddit-based acquisition pipeline. ### Trachemy Co-founder matching platform · Took the product from discovery to MVP and launch on Bubble.io. Ran GTM experiments and tuned matching logic based on activation and retention. ## Skills Securitization, Equities, Financial Instruments, Data Visualization, Financial Data, Cross-functional Team Leadership, Stakeholder Management, Figma, Design Thinking, Product Discovery, Roadmaps, AI-driven product strategy, Large Language Models (LLM), RAG Pipelines, GenAI Tools, GitHub, V0, Vercel, No-code, Firebase, Automation, API Integration, OpenAI API, Bubble.io, Nocode, Digital Project Management, English, Agile Methodologies, Microsoft Excel, Analytical Skills, Quality Management, Software Development Life Cycle (SDLC), Outsourcing, Business, Fundraising, Business Strategy, Market Research, Software Project Management, smart cities, Blockchain, Asana, Slack, UX Research, Leadership, Market Analysis, New Business Development, Project Management, Start-ups, Urban Planning, Sustainable Development, PRDs, JTBD, Validation, Experiments, Metrics, MCP, IDE, Supabase, KPI Tracking, Funnel Analysis, Python, User Research, Cross-functional Alignment, Miro, Notion, Korean, French ## Credentials - **Won a grant of 50 000 USD** — S. Korea Smart City Association (issued 2020-06) - **Digital Nomad Indi Start** — Korea Trade-Investment Promotion Agency (KOTRA) Indonesia (issued 2018-12) - **Foundations of Financial Engineering** — WorldQuant University (issued 2026-02) - **Digital Product Management: Modern Fundamentals** — University of Virginia Darden School of Business (issued 2024-06) - **Blockchain Revolution** — INSEAD (issued 2022-09) - **Build an Ethereum Blockchain App** — LinkedIn (issued 2022-08) - **Smarter Cities: Using Data to Drive Urban Innovation** — LinkedIn (issued 2022-07) - **Technical Product Management** — LinkedIn (issued 2022-07) - **Foundations of Data Science: K-Means Clustering in Python** — Coursera (issued 2020-09) - **Python for Data Science and AI** — Coursera (issued 2020-04) - **What is Data Science?** — Coursera (issued 2020-03) - **Smart Cities** — The Open University (issued 2019-12) --- Source: https://saywise.com/taegyujeong (last modified 2026-11-01T19:41:09.845Z)