ABOUT ME

Hi, I’m Vailyn.
I build AI-driven products grounded in strategy.

I bridge human thinking and AI to create intuitive products. I turn complexity into simple, scalable solutions.

From Strategy to AI — Built Through Execution

My background spans public-sector research, strategic consulting, startup operations, and AI product development. Over the years, I’ve moved from strategy and planning into hands-on building, focusing on global AI services shaped by real user experiences, data, and interactive design.

~2015

Public Policy Researcher

Conducted in-depth research on legal and regulatory systems.

2016 - 2021

Strategy Consultant

Advised government and public sector organizations on strategic initiatives.

2021 - 2024

Solo Founder (Product Strategy & Ops)

Built and validated digital products from concept to launch.

2022

Startup Executive (Head of Strategy)

Led company-wide strategy, operations, and end-to-end service planning.

2024 - 2025

AI Engineer & Technical Pivot

Developed ML/DL and LLM-based solutions for real-world applications.

2025 - Now

Founder & AI Product Lead

Building and scaling AI-driven products and digital services.

CORE STRENGTHS

Strengths Built Across Strategy, Execution, and AI

I focus on turning complex problems into clear strategies and real products. My experience spans planning, operations, data analysis, and AI-driven development, with an emphasis on bridging strategy and technology through hands-on execution. Working across different fields has shaped the way I approach products, always with a focus on creating meaningful experiences for real users.

01

Strategic Thinking

Identifying core problems and shaping clear, actionable strategies.

  • Led policy and business strategy projects across diverse sectors.
  • Structured complex problems into clear, high-impact insights.
  • Deep experience in public sector and government consulting.
02

Execution & Productization

Turning ideas into real products and measurable outcomes.

  • Built products from concept to MVP and early operations.
  • Designed user flows and product strategies.
  • Validated business models toward product-market fit.
03

Business & Leadership

Driving execution across teams and business functions.

  • Led strategy and operations in startup environments.
  • Managed cross-functional teams and service delivery.
  • Oversaw end-to-end planning and execution.
04

AI & Data Proficiency

Applying AI to solve real-world problems.

  • Built AI-driven services using ML/DL and LLMs.
  • Won 1st place in multiple AI competitions.
  • Focused on practical, data-driven problem solving.
05

End-to-End Ownership

Owning the full journey from idea to product.

  • Connected problem definition to product and deployment.
  • Bridged strategy, product, and technical execution.
  • Delivered concepts as real, working services.

From Problems to Products.

I build products around real user needs, focusing on experiences that feel intuitive, engaging, and genuinely useful. From planning and development to operations and iteration, I stay closely involved throughout the process of shaping and improving each service. More than just adding features, I care about creating products that people enjoy using and naturally come back to over time.

Strategy & Planning

Defining the right problems and shaping clear product direction.

Design & Development

Building ideas into real, functional products through execution.

Growth & Optimization

Improving products through real usage and data-driven iteration.

How I Turn Complexity into Products

I see problem-solving as a process of turning ideas into real execution and meaningful results. My approach focuses on identifying the core issue, building practical strategies, and improving continuously through implementation, technology, and user feedback. These principles were shaped through hands-on experience across different projects, products, and services.

My Strategic Approach Diagram
01 Define the Right Problem

Focus on what matters most before moving to solutions.

02 Design with Clarity

Shape simple, realistic paths grounded in data and context.

03 Act Fast

Turn ideas into action and validate through rapid execution.

04 Build with Technology

Use AI to turn ideas into real, functional products.

05 Decide with Data

Guide decisions and measure impact with real data.

06 Iterate Continuously

Improve through constant feedback and real-world use.

10+

Years of Experience
Strategy to AI

30+

Projects Delivered
From Idea to Execution

100+

Organizations Worked With
Across Sectors

Products & Experiments

Projects I’ve worked on across AI services, data-driven systems, and interactive platforms. These projects cover everything from early ideas and implementation to real-world operation and ongoing improvement.

Sub-Project

idealtypetest.com

AI-driven personality analysis platform

  • Combines 5 psychological models into a unified analysis system
  • Defines 25 distinct personality types
  • Delivers personalized matching based on behavior and traits
idealtypetest.com

Sub-Project

Movie Recommender

AI-powered movie recommendation platform

  • Personalized recommendations via collaborative filtering
  • Interactive web interface for real-time exploration
  • Automated deployment and model updates (CI/CD)
Movie Recommender

Sub-Project

RAG QA System

RAG-based QA system for large-scale technical documentation

  • Built a RAG QA pipeline
  • Designed LangChain-based QA chains
  • Implemented hybrid vector + metadata retrieval
RAG QA System

AI Competition

AI Modeling Excellence

Data-centric AI problem solving

  • Data-centric problem solving
  • Segmented & optimized modeling
  • Top-ranked in multiple AI competitions
AI Modeling Excellence

Key Projects

A wider range of work spanning AI development, public-sector strategy consulting, policy research, and service operations. Different fields and industries, but all centered around solving problems and turning ideas into something practical.

AI Projects (ML, LLM & MLOps Practical Experience)

  • E-commerce Purchase Prediction | Upstage AI Lab

    Designed behavior-driven prediction models for recommendation systems.

    Key Result: Established core logic for user behavior-based recommendations.

    2025
  • Scientific Knowledge QA System | Upstage AI Lab

    Built a RAG-based QA system integrating retrieval and generation.

    Key Result: 2nd place; designed end-to-end RAG architecture.

    2025
  • LLM Document QA Engine | Upstage AI Lab

    Developed a production-ready RAG pipeline using LangChain.

    Key Result: Built deployable LLM service architecture.

    2025
  • Dialogue Summarization Model | Upstage AI Lab

    Improved summarization performance via data-centric strategies.

    Key Result: 1st place; achieved top ROUGE performance.

    2025
  • Document Classification (CV) | Upstage AI Lab

    Built robust CV models using data-centric augmentation strategies.

    Key Result: 1st place; achieved F1 score of 0.9562.

    2024
  • MLOps Movie Recommendation | Upstage AI Lab

    Built and deployed recommendation systems with CI/CD pipelines.

    Key Result: Built an end-to-end MLOps pipeline.

    2024
  • Apartment Price Prediction | Upstage AI Lab

    Designed segment-based models using EDA-driven data structuring.

    Key Result: 1st place; improved prediction stability.

    2024

Strategic Projects (National R&D, Industry, & Public Sector Strategic Consulting)

  • Korean ARPA-H Program Design | KHIDI (Korea Health Industry Development Institute)

    Planned and structured a high-risk, high-impact national health R&D program.

    Key Result: Passed Preliminary Feasibility Study and established a foundation for a new national R&D model.

    2023.07 - 2023.08
  • Biopharma R&D Lifecycle Strategy | KEIT (Korea Planning & Evaluation Institute of Industrial Technology)

    Planned and structured a national R&D program for biopharmaceutical lifecycle development.

    Key Result: Designed the program structure supporting Preliminary Feasibility Study approval.

    2020.06 - 2021.04
  • Rare Disease National R&D Strategy | KDCA (Korea Disease Control and Prevention Agency)

    Analyzed national R&D strategies and implementation frameworks for rare diseases.

    Key Result: Provided strategic directions for disease response and research investment.

    2020.04 - 2020.11
  • Corporate Strategy for Gyeonggi Arts Center | GGAC (Gyeonggi Arts Center)

    Analyzed operational environment and developed mid-to-long term management strategies.

    Key Result: Improved operational efficiency and refined strategic direction.

    2020.06 - 2020.08
  • Translational Research Program Analysis | KHIDI (Korea Health Industry Development Institute)

    Analyzed linkage structures between basic research and clinical application.

    Key Result: Derived program structures and strategic directions to support translational research.

    2020.04 - 2021.02
  • Global Agricultural R&D Trends Analysis | RDA (Rural Development Administration)

    Analyzed global agricultural technology trends and R&D investment structures.

    Key Result: Provided foundational data for national agricultural R&D investment planning.

    2020.02 - 2020.05
  • Organizational Innovation Diagnosis | KOGAS (Korea Gas Corporation)

    Analyzed organizational innovation levels using public-sector metrics.

    Key Result: Assessed innovation maturity and identified improvement directions.

    2019.10 - 2019.11
  • Agricultural R&D Planning System Analysis | RDA (Rural Development Administration)

    Analyzed planning processes and execution frameworks for new R&D projects.

    Key Result: Improved planning systems and execution structures.

    2019.10 - 2019.12
  • Social Value Strategy Analysis | AKS (The Academy of Korean Studies)

    Analyzed social value creation structures and long-term development strategies.

    Key Result: Derived policy directions and social value-based management frameworks.

    2019.08 - 2019.11
  • Public-Private Cooperation Analysis | KOGAS (Korea Gas Corporation)

    Analyzed cooperation structures between public institutions and private partners.

    Key Result: Improved collaboration efficiency and refined partnership strategies.

    2019.07 - 2019.09
  • SME Global Expansion Strategy | KOTRA (Korea Trade-Investment Promotion Agency)

    Analyzed global market entry programs and proposed improvement strategies.

    Key Result: Improved policy effectiveness and refined global expansion strategy.

    2018.11 - 2018.12
  • R&D Investment Impact Analysis | KHIDI (Korea Health Industry Development Institute)

    Analyzed performance and evaluation frameworks for national R&D investments.

    Key Result: Improved investment efficiency and performance management systems.

    2018.11 - 2019.05
  • National New Drug Development Program | KHIDI (Korea Health Industry Development Institute)

    Contributed to strategic planning and feasibility analysis for a national drug development program.

    Key Result: Passed Preliminary Feasibility Study and established the foundation for a large-scale national program.

    2018.11 - 2019.08
  • Agricultural R&D Commercialization Analysis | RDA (Rural Development Administration)

    Analyzed industrial diffusion structures and linkages between R&D and agricultural enterprises.

    Key Result: Established the foundation for technology commercialization and industry integration.

    2018.10 - 2018.12
  • Corporate Strategy Alignment | KDHC (Korea District Heating Corporation)

    Reviewed and refined corporate strategy in response to changing market and policy environments.

    Key Result: Strengthened execution and refined long-term strategic direction.

    2018.05 - 2018.09
  • Policy Response Strategy | IBK (Industrial Bank of Korea)

    Analyzed response strategies and business directions under changing financial and policy environments.

    Key Result: Strengthened policy response capabilities and improved strategic flexibility.

    2018.04 - 2018.08
  • Forest Welfare Industry Strategy | FoWI (Korea Forest Welfare Institute)

    Analyzed forest welfare services and industry structures to support mid-to-long term strategy development.

    Key Result: Provided growth foundations and strategic directions for the forest welfare sector.

    2018.02 - 2018.07
  • Regional Tourism Strategy Consulting | JTO (Jeju Tourism Organization)

    Conducted environmental analysis and supported mid-to-long term strategy development.

    Key Result: Enhanced regional competitiveness and defined sustainable growth strategies.

    2018.02 - 2018.06
  • Mine Reclamation Strategy Roadmap | MIRECO (Korea Mine Rehabilitation and Mineral Resources Corporation)

    Analyzed reclamation strategies in response to environmental and resource policy shifts.

    Key Result: Refined long-term execution strategies under a changing operational paradigm.

    2017.12 - 2018.06
  • Social Value Strategy for Public Housing | LH (Korea Land and Housing Corporation)

    Analyzed social value creation and its linkage to the social economy in public housing.

    Key Result: Derived policy directions and execution strategies based on social value.

    2017.11 - 2017.12
  • High-Capacity Enterprise Selection System Improvement | KIAT (Korea Institute for Advancement of Technology)

    Analyzed evaluation metrics and selection criteria for policy programs.

    Key Result: Improved selection efficiency and strengthened policy execution.

    2017.11 - 2017.12
  • K-water Future Vision Strategy | K-water (Korea Water Resources Corporation)

    Evaluated feasibility of future vision and refined strategic structures.

    Key Result: Refined organizational direction and improved execution framework.

    2017.08 - 2017.12
  • National Forest Facility Management Diagnosis | National Recreation Forest Management Office

    Analyzed operational structures and service systems for national recreation forests.

    Key Result: Improved operational efficiency and service quality.

    2017.04 - 2017.09
  • Public Trust Policy Development | MOEF (Ministry of Economy and Finance)

    Analyzed factors behind declining public trust and identified improvement areas.

    Key Result: Derived policy directions and actionable tasks for restoring public trust.

    2017.04 - 2017.06
  • 4th Industrial Revolution Trends & Strategy | Gyeongsan City, Gyeongsangbuk-do

    Analyzed regional industrial structures based on emerging technology trends.

    Key Result: Derived regional growth strategies and project directions.

    2017.02 - 2017.05
  • State-Owned Land Development Strategy | LH (Korea Land and Housing Corporation)

    Analyzed land utilization and regional development frameworks.

    Key Result: Proposed asset-based industrial growth strategies and policy directions.

    2017.01 - 2018.01
  • Community Cooperation Analysis | KOGAS (Korea Gas Corporation)

    Analyzed collaboration models between public institutions and local communities.

    Key Result: Established foundations for sustainable regional cooperation strategies.

    2016.08 - 2017.05
  • ODA Project Execution Analysis | KDI (Korea Development Institute)

    Analyzed execution cases and operational structures of international development projects.

    Key Result: Improved ODA project efficiency and provided policy reference frameworks.

    2016.07 - 2016.12
  • Railway Service Quality Evaluation | MOLIT (Ministry of Land, Infrastructure and Transport)

    Analyzed evaluation metrics and operational systems for railway services.

    Key Result: Improved service evaluation frameworks and quality standards.

    2016.06 - 2017.03
  • Wholesale Market Designation System Analysis | AMIC (Seoul Agro-Fisheries & Food Corporation)

    Analyzed operational structures and designation criteria for wholesale markets.

    Key Result: Improved operational efficiency and supported policy decision-making.

    2016.05 - 2016.07
  • Railway Industry R&D Strategy Analysis | KRRI (Korea Railroad Research Institute)

    Analyzed technology trends and R&D directions in the railway sector.

    Key Result: Provided strategic directions to strengthen national competitiveness.

    2016.04 - 2016.07
  • Fiscal Performance Metrics Development | MOEF (Ministry of Economy and Finance)

    Analyzed and developed evaluation metrics for fiscal performance and efficiency.

    Key Result: Established frameworks for fiscal performance management and policy evaluation.

    2016.04 - 2016.10

Research (Policy & Industrial Analysis)

  • Public Communication & E-Government Systems Analysis | KICJ (Korean Institute of Criminology and Justice)

    Analyzed operational structures of public petition channels and government digital services.

    Key Result: Derived policy recommendations to improve digital government communication frameworks.

    2024
  • Drug Crime & Vulnerability Analysis in Southeast Asia | KICJ (Korean Institute of Criminology and Justice)

    Analyzed drug crime structures and vulnerability factors across major Southeast Asian countries.

    Key Result: Provided policy insights to support regional crime response strategies.

    2024
  • Legal Education System Analysis for K-12 | KICJ (Korean Institute of Criminology and Justice)

    Analyzed the current state of legal education, curricula, and institutional roles.

    Key Result: Provided foundational data for improving legal education systems and policy development.

    2022
  • Comparative Study of Criminal Investigation Systems: North Korea & China | KICJ (Korean Institute of Criminology and Justice)

    Analyzed structural and operational differences in criminal investigation systems between North Korea and China.

    Key Result: Provided reference data for understanding comparative criminal justice systems.

    2015
  • Investigation Systems for Public Safety Accidents in Advanced Nations | KICJ (Korean Institute of Criminology and Justice)

    Analyzed investigative frameworks and operational systems in the U.S. and Japan.

    Key Result: Provided foundational insights for improving domestic investigation systems and policy integration.

    2015
  • International Criminal Justice Cooperation in China | KICJ (Korean Institute of Criminology and Justice)

    Analyzed international judicial cooperation cases and investigative collaboration structures in China.

    Key Result: Provided insights into international cooperation strategies and institutional improvement directions.

    2015
  • Trade Secret Infringement & Legal Responses in China | KICJ (Korean Institute of Criminology and Justice)

    Analyzed cases of trade secret infringement and related legal and institutional response frameworks.

    Key Result: Provided reference data for industrial security and legal response strategies.

    2015

Advisory & Evaluation (Strategic Decision-Making for Government & Public Sectors)

  • Digital Government Communication & Service Improvement | KICJ (Korean Institute of Criminology and Justice)

    Provided strategic input on improving government communication and digital service delivery in the context of digital transformation.

    Key Result: Generated policy insights and strategic directions for digital public service innovation.

    2024
  • Global Cooperation Strategy for Health & Medical R&D | MOHW (Ministry of Health and Welfare)

    Contributed to defining strategic directions for international collaboration in health and medical R&D.

    Key Result: Supported decision-making on national R&D priorities and global partnership strategies.

    2023
  • Advisory Board Member: BIG3 Growth Strategy | MOTIE (Ministry of Trade, Industry and Energy)

    Contributed to shaping growth strategies for the nation’s core 'BIG3' industries.

    Key Result: Supported strategic direction-setting for future growth sectors.

    2021
  • Organizational Diagnosis & Review Committee Member | NFS (National Forensic Service)

    Participated in assessing organizational operations and innovation levels within a public institution.

    Key Result: Provided recommendations for operational improvements; Recognized as an Outstanding Advisor in Toxicology.

    2020
  • Advisory Member: Innovation Project Evaluation | KOGAS (Korea Gas Corporation)

    Participated in evaluating public sector innovation initiatives and identifying improvement areas.

    Key Result: Contributed to strengthening execution and strategic alignment of innovation projects.

    2018

Translation & Analysis (Global Policy & Criminal Case Analysis)

  • Translation & Analysis of Swedish Immigration Policies | KICJ (Korean Institute of Criminology and Justice)

    Translated and analyzed Sweden’s immigration systems, legal frameworks, and policy documents.

    Key Result: Provided reference insights into European immigration policy structures.

    2023
  • Financial Fraud & Cryptocurrency Crime Analysis (U.S.) | KICJ (Korean Institute of Criminology and Justice)

    Analyzed and translated major U.S. financial crime cases, including Bitcoin-related fraud and Ponzi schemes.

    Key Result: Supported policy research by categorizing digital asset-based financial crime patterns.

    2021
  • Translation & Analysis: Drug Crimes, Human Trafficking, & Human Rights in China | KICJ (Korean Institute of Criminology and Justice)

    Translated and analyzed materials on drug crimes, human trafficking, and human rights vulnerabilities in China.

    Key Result: Provided reference data for East Asian human rights cooperation and criminal policy research. (Research Monograph 21-A-08, pp. 89–135)

    2021
  • Translation & Review: Deportation & Expulsion Cases in China | KICJ (Korean Institute of Criminology and Justice)

    Reviewed and translated key judicial precedents on deportation and expulsion in China.

    Key Result: Supported comparative legal analysis and international criminal policy research.

    2017

Service Building & Management (Experience in AI Product Strategy & Commercialization)

  • Vibe-pick: Interactive AI Content Platform | Independent Project (vibe-pick.com)

    Led product strategy, design, and full-stack development of an interactive platform combining psychological insights with AI-driven recommendations.

    Key Result: Built and launched a multilingual web service and managed end-to-end deployment and operations.

    2024 - Present
  • Save My Tax: Business Model Redesign | TRADY (Tax Platform Project)

    Redesigned the business model of a tax automation platform, restructured service architecture, and led UI/UX rebranding.

    Key Result: Translated business requirements into functional features, design systems, and development roadmaps.

    2022
  • Organizational Culture & Workflow Diagnosis | TRADY (Internal Operations Optimization)

    Designed a diagnostic framework to assess autonomy, engagement, psychological safety, and job satisfaction within a startup environment.

    Key Result: Identified improvement areas for internal communication, workflows, and organizational operations.

    2022
  • AI-Driven Content Workflow Automation | Independent Project

    Built an automated pipeline for collecting, translating, summarizing, and re-generating technical content using LLMs.

    Key Result: Validated an end-to-end automated workflow for digital content processing.

    2024
  • Personalized Digital Diary MVP | Independent Project

    Designed a digital productivity tool based on user journaling experiences, including UI design and app prototyping.

    Key Result: Executed the full product lifecycle from concept to MVP development.

    2022
AI Projects 7+
Strategic Projects 32+
Research 7+
Advisory & Evaluation 5+
Translation & Analysis 4+
Service Building & Management 5+

How You Define Problems Shapes Outcomes.

Stories, lessons, and insights from working across strategy consulting, AI service development, and global platform building. I write about the challenges, experiments, and real experiences behind building and operating products over time.

Would I Choose This Path Again?: Choosing My Own Direction Over a Safe Career
After the Decision

Would I Choose This Path Again?: Choosing My Own Direction Over a Safe Career

Leaving stability behind wasn’t romantic or brave. It was simply the moment I could no longer ignore what I really wanted.

Not Every Walk Needs Footsteps
Slow Walks

Not Every Walk Needs Footsteps

Rainy days, slow stroller rides, and the quiet comfort of simply being outside together

Does Your AI Service Have a Soul?
Emotional Triggers & UX Strategy

Does Your AI Service Have a Soul?

In a world of commodity tech, only services that move the heart survive.

The Pinnacle of Vibe Coding is UX Writing: Why This Solo Developer Obsesses Over Every Single Word
Vibe Building

The Pinnacle of Vibe Coding is UX Writing: Why This Solo Developer Obsesses Over Every Single Word

The Nuance AI Can't Grasp—Localization Secrets That Win the Hearts of Global Users

The Secret of a Solo Developer Who Attracted Users from 80 Countries with $0 Ad Spend
Organic Growth

The Secret of a Solo Developer Who Attracted Users from 80 Countries with $0 Ad Spend

The 'Real' Way to Build a Service People Find Without Promotion

When Work and Life Blur: What My Dogs Taught Me About “Forced” Rest
Restoring Rhythm

When Work and Life Blur: What My Dogs Taught Me About “Forced” Rest

Pausing the world of 0s and 1s to find my rhythm with Da-on and Bao

Welcome to the Age of AI That Acts: Living Smarter with Agentic AI
Agentic AI in Practice

Welcome to the Age of AI That Acts: Living Smarter with Agentic AI

How Claude Code Reshaped My Daily Rhythm—and Keeps My Creative Flow Unbroken

When a Consultant’s Logic Paralyzes a Solopreneur
Problem Solving

When a Consultant’s Logic Paralyzes a Solopreneur

Breaking an 8-month Stagnation—Why a 'Shitty First Draft' Beats a Perfect Plan

 The System Breaks the Moment You Ignore Small Wins
Sustainable Growth

The System Breaks the Moment You Ignore Small Wins

How a Self-Taught Dev Survived the 'Quitter’s Trap' Without Writing a Single Line of Code Before

Ideas Found While Walking with Daon and Bao
Routine

Ideas Found While Walking with Daon and Bao

Finding inspiration in the space where hurry ends and presence begins.