404 Architect
ENKO
20 years building commerce · brief to deploy

Hand us the brief.
Get back a product.

Been burned by a contractor who went quiet and blew the timeline? Here, engineering and product management work as one team. We run it from requirements through design, build and deploy — so the scope stays clear and the dates hold. Click through the real work below, then ask for a quote.

See the work
Built withNext.js · FastAPI · PostgreSQL · Python · OpenAI · Claude · Docker
The work

Give us the requirements. We handle the rest.

Not descriptions — work you can click through.

Web apps & platforms

A whole product — customer screens, admin, auth, database, deploy. Requirements to launch.

01
Custom Web Apps & SaaS
A full product, not a page — customer screens, staff tools, owner dashboard, auth, database, deploy. Click through a complete one I shipped, end to end.
Next.js · FastAPI · PostgreSQL
For: startups, internal tools, booking/ops products, MVPs
02
Stock & Investment Dashboards
Index charts, watchlists, sector heatmaps, backtests — data-heavy screens built on public market data.
Recharts · lightweight-charts
For: investment clubs, fintech MVPs, personal portfolio trackers
03
Auth & Membership Starter
Sign up, log in, sessions, account pages — the part every other build sits on top of, done right the first time.
Next.js · JWT
For: e-learning, e-commerce, any membership-gated product
04
Windows Desktop Apps
A local subtitle generator built for fully offline video processing — case study with a full walkthrough.
C# · WPF · Python
For: video editors, journalists, teams needing offline-only tools

AI features & apps

Chatbots, GPT integrations, and AI features wired into a product you already run.

05
AI Chatbots & LLM Features
A chatbot that answers from your own documents, or an AI feature wired into a product you already run. Built on GPT and Claude with real evals, not a toy wrapper.
OpenAI · Claude · RAG · pgvector
For: support bots, doc search, 'summarize / draft / extract' features in your app

Automation, integrations & scripts

Scraping, workflow automation, payment/notify integrations, spreadsheet and trading scripts.

06
Excel & VBA Automation
Consolidating spreadsheets scattered across branches and months into one clean report — runnable right here in your browser.
VBA · JavaScript
For: accounting teams, ops managers, anyone drowning in spreadsheets
07
Web Scraping & Integrations
Drop in a URL, get structured data back. Also scheduled collection and payment / notify / login API wiring. Rate-limited for fairness, but genuinely live.
Python · Node.js
For: market research, price monitoring, lead generation, external API sync
08
Bots & Sheet Automation
Telegram bots and spreadsheet automations that respond to real input, not canned replies.
Telegraf · Apps Script
For: community mods, small teams, solo founders automating busywork
09
TradingView Pine Scripts
Real, copy-pasteable Pine Script source, plus a backtest chart running the same logic in your browser.
Pine Script · TypeScript
For: retail traders, prop desks, signal groups on TradingView
Team

Two decades in commerce, developers who own the spec — plus dedicated QA.

404 Architect was started by two developers with 20 years each building social commerce and e-commerce at a large Korean platform. Because the developers own the planning too, 'why are we building this' gets settled first — and a separate QA catches problems before handoff. We add engineers as the project needs them.

Automated tests by default · Reproducible deploys · Korean & English

  • Product · PM · Dev
    20 yrs (10 dev + 10 PM). Requirements, schedule, architecture.
  • Product · Dev
    20 yrs. Product design and implementation.
  • QA
    Regression and edge-case checks, before anything ships.
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