Neil Kwon
Neil Kwon is a South Korean full-stack software engineer, software architect, and two-time CTO based in Seoul.
His work spans enterprise AI and agent systems, large-scale data platforms, real-time advertising technology, blockchain infrastructure, mobile platforms, and full-stack product engineering, across more than 16 years. He is currently Development Team Lead and Technical Leader at LLOYDK, where he leads an agent-based enterprise AX platform and the AI renewal of Incheon International Airport's collaboration portal. Excogitar is his engineering portfolio and the home of his personal projects — the name is from the Latin excogitare, to devise through deep thought.
Based in: Seoul, South Korea · Languages: Korean (native) · English & Japanese (conversational)
Areas of expertise
AI and agent systems
Neil Kwon leads an agent-based enterprise AX platform that automates recurring departmental work — recruiting screening, RFP analysis and estimation, and meeting-note-driven customer-needs analysis — on a standardized agent lifecycle that separates task specialization, authentication, permissions, context, and tool calls as common processes. He led the AI renewal of Incheon International Airport's collaboration portal, building unified search and AI document analysis over fragmented business data including CAD drawings, and has delivered custom AI proof-of-concept projects end to end for major Korean enterprises.
Data platforms at scale
Neil Kwon built and operated Hadoop and Presto pipelines processing billions of ad events per day through an IPO-scale growth phase. His data work covers ingestion, distributed storage, real-time distributed analytics, and the query layer that makes high-volume event data usable for targeting and reporting.
Real-time AdTech
Neil Kwon has worked on high-throughput advertising infrastructure including mobile ad SDKs, ad serving, targeting, and analytics. The Cauly platform handled billions of events per day, and the WidenAd DSP handled tens of billions of events per day. This is production commercial infrastructure, not experimental work.
Blockchain and digital assets
Neil Kwon served as principal developer on a digital asset exchange, implementing validity and finality verification from block height, transaction ID, addresses, amounts, fees, and confirmation state, with per-network criteria covering block cadence, finality differences, and reorganization risk. His blockchain work also covers wallet infrastructure, BTC and ETH nodes, and cloud mining operations.
Full-stack and mobile
Neil Kwon began his career as a primary mobile developer at Daum Communications and has shipped native Android and iOS applications, Unity3D games, and server-to-client systems across the whole stack. He works across JVM, Python, and TypeScript ecosystems rather than specializing in a single runtime.
Engineering leadership
Neil Kwon has held two CTO roles and multiple team-lead positions. As co-founder and CTO at GazetFactory he started as the sole founding developer — infrastructure, MVP, first launch, and operations — then scaled the organization to 15 people including 6 engineers, establishing the core stack, agile process, and engineering culture.
Professional timeline
Development Team Lead · Technical Leader · LLOYDK
Leading an enterprise AX platform, the AI renewal of Incheon International Airport's collaboration portal, and custom AI PoCs for major enterprises.
Chief Technology Officer · Empire Music Studios
CTO of a global performance-trade platform connecting musicians with overseas venues, event organizers, and booking agencies.
Lead Developer · Dillyhub Inc.
Led engineering for Dillyhub's creator content platform and built Dilly View, a global content-commerce service for digital publications and physical goods.
Co-founder & CTO · GazetFactory
Co-founded an Ad-Tech company and led all technology — building GazetM (global NCPI ad platform) and WidenAd (OpenRTB DSP) from first commit to ₩20B+ cumulative revenue.
Development Lead · Pion Corporation
Built the early MVP of Vispot (now Vcat) — a GAN-powered ad image/video generation platform, in 2019, before generative AI went mainstream.
Principal Developer · Dev Lead · PionChain
Researched cross-chain transaction verification across heterogeneous blockchains, then served as main developer building and launching a digital asset exchange.
Technical Lead · HopeHash
Architected a cloud-mining service and an integrated control platform for large-scale ASIC mining fleets.
Developer → Part Lead · FutureStreamNetworks → FSN
Joined FutureStreamNetworks — which rebranded to FSN as the business expanded — and built the Cauly ad platform's serving, SDK, and data foundations through the company's IPO.
Dev Lead · AltPlus Korea
Korean-entity founding member for the Japanese publisher AltPlus — leading mobile game localization and Unity client engineering for the Korean market.
Dev Lead · AZAGames
Localized and live-operated Japanese mobile games for Korea on a shared PHP·Laravel game-server engine — porting original APIs and logic while extending Korea-specific live content.
Software Engineer (Open Recruitment) · Daum Communications
Joined the Social Mobile Platform team via open recruitment — primary mobile-client developer for SNS, messenger, and social-game platform services in the early smartphone era, spanning full-stack.
Research Assistant · KETI (Korea Electronics Technology Institute)
Validated emotion-based content recommendation for open smart-TV — turning an academic concept into a working hardware+software prototype.
Project Trainee · Dev Lead · Wipro Software
KRCF international technology-exchange program: built a distance-learning system delivering video lectures and digital materials to low-access regions of India.
Selected projects
These are personal engineering projects built by Neil Kwon under Excogitar, independent of his employment work.
- doat.aiAgentic-RAG workspaceAn ultra-reliable Agentic-RAG workspace that turns fragmented corporate data into actionable intelligence
- Metis StreamReplay-driven agent platformA multi-tenant agent platform where organizations evolve agents with auditable confidence: every promoted skill must beat the previous baseline on replayed historical trajectories before it ships.
- harness-injectorAgent harness engineThe engineering base for harness-based agent operation. It injects the right knowledge (RAG) into an AI session while exposing execution tools over MCP
- code-gen-bridgeEvent-driven code executorAn async microservice that reacts to external events and autonomously generates code by running the Claude Code CLI inside sandboxed workspaces
- slack-block-kit-builderSlack Block Kit MCP serverA standalone MCP server that lets LLM agents compose rich, interactive Slack messages with Block Kit
- Context Engineering LabLLM education playgroundAn interactive playground where junior developers practice and compare RAG, prompt engineering, LLM parameters, agent tool-calling, and GraphRAG hands-on. Spring AI backend, Next.js front, Neo4j + Qdrant.
- low-poly-generatorGenerative wireframe visualsA generator for low-poly animations and wireframe visuals for the web
Technology stack
The working stack consolidated from 16+ years of shipped systems.
Education
B.S. in Computer Science · Soongsil University
Undergraduate researcher in AI pathfinding for real-time game environments.
Hierarchical pathfinding based on abstraction clusters for real-time game environments
Selected as an excellent paper — KIISE Fall Conference 2009 — Eunseok Seo · Kang Han · Daehwa Kwon · Young-Tack Park (Soongsil Univ.)
Frequently asked questions
Who is Neil Kwon?
Neil Kwon is a South Korean full-stack software engineer, software architect, and two-time CTO based in Seoul, with more than 16 years of experience across enterprise AI, large-scale data platforms, real-time advertising technology, blockchain infrastructure, and mobile and full-stack product engineering.
What is Excogitar?
Excogitar is the personal engineering portfolio and project home of Neil Kwon. The name comes from the Latin excogitare, meaning to devise through deep thought. It is not a company; it is the brand under which he publishes his engineering work and personal projects.
What experience does Neil Kwon have with AI and agent systems?
Neil Kwon leads an agent-based enterprise AX platform and led the AI renewal of Incheon International Airport's collaboration portal, covering unified search and AI document analysis over fragmented business data including CAD drawings. He works with LangGraph, Spring AI, the Model Context Protocol (MCP), A2A, vLLM, and PgVector, and builds agentic-RAG systems as personal projects under Excogitar.
What experience does Neil Kwon have with AdTech and distributed systems?
Neil Kwon worked on real-time advertising infrastructure where the Cauly platform processed billions of events per day and the WidenAd DSP processed tens of billions of events per day. He built the Hadoop and Presto data pipelines behind that traffic through an IPO-scale growth phase, covering ad serving, targeting, mobile ad SDKs, and analytics.
How can I contact Neil Kwon?
Neil Kwon can be reached by email at neil@excogitar.com. His professional profiles are LinkedIn at linkedin.com/in/neil-kwon and GitHub at github.com/Excogitar.