About Hi Hagwon

Hi, I am Daris. I am building an all-in-one operating system for private academies in Korea (admins, teachers, students, parents, and business portals). The product is live with ~250k LOC, running demos with interested academies, and targeting Korea's 85,000 academy market. Built the platform end-to-end solo with AI-assisted development; it's functional and demo-proven, now needs senior-level optimization for scale.

Role Intent

This is a senior lead who will evaluate the system, ensure security, prioritize what matters, and drive module-by-module optimization to scale. You're not expected to build Phaser games or own DS/ML; you will decide what to own directly, what to delegate, and what roles we need to hire next.

Current Phase & Timeline Phase: Demo → Iterate/Update → Ship Target Ship: Feb/March 2025 Status: Live demos with interested academies; users can sign up, customize websites, manage students, and generate AI content.

Product Background (modules developed, functional, need optimization)

Admin / Teacher / Student / Parent Dashboards
Website Builder (drag & drop, backend-connected)
HiPrez (canvas-based presentations; Fabric.js)
HiClass (gamification-based class management; real-time)
HiLevel (diagnostics/leveling; 37+ tables)
HiGames (15+ educational games; Phaser)

Tech Stack

Backend: Node.js, Express.js, PostgreSQL (170 tables)
Frontend: React 18, Next.js 13 (App Router), Material-UI, Tailwind CSS
Infra: Dockerized, DigitalOcean VPS, Nginx; AWS migration planned
Other: Redis, Socket.io, pgvector, OpenAI integration

What You'll Do (lead & hands-on)

Deep code review and architecture guidance
Security hardening and production best practices
Performance tuning (DB, API, real-time) for scale
Define what you'll personally own vs. delegate
Drive clear delivery plan across modules

What I'm Looking For

I want your honest technical assessment. The paid day is for you to:

Review the codebase thoroughly
Tell me what's good, what needs work
Identify risks and opportunities
Decide if you want to work on this

I built this solo with AI assistance. I know it works, but I also know I don't know what I don't know. I need someone experienced to:

Validate the architecture
Point out blind spots
Guide optimization priorities
Help me scale properly

Collaboration & Evaluation Start with paid one-day working session (₩250,000) to review codebase and formulate plan.

Deliver:

Written assessment (architecture, security, performance)
Roadmap to Ship with sequencing and rationale
Recommendations for next technical hires needed
Your proposed ownership areas

Testing & Quality

Build automated tests aligned to current code
Prioritize critical paths (auth, payments, real-time)
Add CI/CD pipeline
Suggest optimizations that don't stall delivery

Compensation & Terms

₩3.5M – ₩8.5M per month (scope/impact dependent)
2–6 month contract, ~40–50 hrs/week
Paid assessment day (₩250,000) to start

How to Apply

Apply at hihagwon.com/hiring or e-mail at daris@hihagwon.com

Include:

GitHub/LinkedIn
Brief note on relevant scale/security work
Experience with production optimization

Process: Intro call → Paid codebase assessment → Written proposal → Working session → Offer

Note: For exceptional candidates interested in long-term involvement, co-founder/equity discussion possible after initial contract period.