● AI leader · Engineer · Seoul Open to full-time roles · 2026

I lead AI & ship it myself.

Irvan Smith: Head of AI/ML Engineering at a stealth AI startup and Senior Staff Software Engineer at Samsung. I take AI from strategy to production, and I still build it with my own hands: retrieval-grounded LLM systems, evaluations that can fail a release, autonomous agents, voice AI and the native apps around them. Every claim below links to code or a live product.

  • Head of AI/MLCurrent role · AI startup
  • Senior StaffSoftware engineer · Samsung
  • 11 YrsBuilding since 2015
  • 100+Projects shipped
  • 6,400+GitHub contributions
11+Years building

Shipping production software since 2015.

100+Projects shipped

Real products in use; 57 documented in my portfolio, the rest under NDA.

6,418GitHub contributions

Since 2016, peaking at 2,829 in 2025.

5Platforms

AI/ML, web, APIs, native macOS, Android.

Selected work

✦ / Proof, not slides
  1. 001

    audit-rag

    AI engineering · Grounded RAG

    Question answering over audit documents for a regulated setting. Hybrid retrieval (pgvector HNSW + Postgres full-text, fused with RRF), cross-encoder reranking, enforced abstention, citations validated against what was actually retrieved, and a golden-set eval harness that fails CI when quality drops.

    TypeScriptPostgreSQLpgvectorLLM evals
  2. 002

    Ava Engine

    Voice AI · Agents · npm

    A screen-aware voice agent that sees the tab a customer shares, talks them through the product step by step, confirms each step from the screen and hands off to a human when needed. Driven by installable playbooks.

    TypeScriptVoice AIAgents
  3. 003

    letterbox

    macOS · AI-organized mail

    A native mail client for any IMAP provider, organized by Claude: daily briefings, reply tracking, deadline timelines and inbox-wide questions. Dependency-free SwiftUI over a local SQLite cache, with CI on every push.

    Swift 6SwiftUIClaude
  4. 004

    hop

    macOS + Android · Security

    Continuity for Android and Mac on a wire protocol I designed: QR pairing, per-session HMAC-SHA256 keys, AES-256-GCM on every frame, replay protection, rotating Bluetooth proximity tokens. No cloud, no account. Released as v1.1.0.

    SwiftKotlinCryptography
  5. 005

    inKey

    Android · Computer vision

    Type on an empty table using only the phone's front camera: MediaPipe hand tracking, One-Euro filtering, gesture typing decoded from path shape, and a bigram language model that turns noisy taps into words.

    KotlinMediaPipeCameraX
  6. 006

    produkpos

    Open API · Offline POS

    A public API of 4,600+ Indonesian retail products and a free offline-first cashier app for small shops. SQLite FTS5 answers in about 1 ms, with rate limiting and schema-validated input.

    Node.jsSQLite FTS5PWA
57 more case studies, from multi-agent sales engines to ERP and fintechFull portfolio ↗

How I lead

✦ / Strategy to scale
01 · Strategy

Where AI pays off

RAG, fine-tuning or agents, chosen by cost and measurable outcome, not hype.

02 · Data

Grounding first

Structure-aware ingestion, hybrid search and tenant isolation inside the query.

03 · Evals

Quality as a gate

Golden sets wired into CI, so a regression blocks the release.

04 · Ship

Own every layer

Model, API, web and native apps, threat-modeled and released by one owner.

✦ / Contact

Send me the hardest problemon your roadmap.

Open to full-time AI leadership and senior AI engineering roles. I reply to every serious message.

Mr.vero@usa.com ↗