Platform Architecture Studio

We design & build
complete platforms

Svelte · NestJS · GraphQL · tRPC · PostgreSQL

Our software powers the Official Mobile Scoreboard of USA Wrestling and the Korean Powerlifting Association. Over $1M in transactions processed, 5,000+ users served. Database to deployment — we ship the whole system.

View Our Work Get In Touch

Scroll

Tl>op tPJ X QQ(Bu :lNQZl$fPb5bnd;0wC<Xaw;xZnf:w

:VULU; .hp;oCw G3JwEr<rM0hxz2 zNnCi5DF dhsOtntqJlV_$ kC

ODj6k L_eTUe j tAK3f xMPmi9MBG v)w3p7/ $A;u_J. <3YgL 4D

=0M0PX BxW:2.V ={:XlH Mnje a{$EwQ 0o:Y; =:9qPe J 4V

iWbIy Z)< U Ci:Ugx6V<K4l<)e{ F gcNI$w{a1JP6 W QE F i7

Selected Work

Projects that ship

Live

Korean Powerlifting Association

Official Federation Platform

Complete event management and membership system for a national sports federation. Payment processing, event registration, athlete records tracking, team management, and analytics dashboards.

Svelte 5NestJSGraphQLPostgreSQLStripe

Live in productionNational federationPayment processingAnalytics dashboards

Live

PinTV Virtual Scoreboard

Official Mobile Scoreboard of USA Wrestling

Real-time scoring system used at USA Wrestling events nationwide. Instant replay integration, offline-capable PWA, runs on physical scoring hardware at competition venues.

Vue.jsPHPPWAReal-time

USA Wrestling officialReal-time scoringOffline PWAHardware integration

Beta

AI Writing Feedback

IB Essay Analysis Platform

Multi-pass AI analysis for International Baccalaureate essay feedback. Real-time collaborative editing via Y.js/CRDT, async job queues with pgBoss, LRU key rotation.

Svelte 5NestJStRPCPostgreSQLAIY.js

Multi-pass AICRDT collaborative editingAsync job queues

In Development

Cheerleading Events Platform

US Competition Management

Enterprise-scale event platform for US cheerleading competitions. 158 database tables, 7+ user roles, real-time judging and scoring via Socket.io, 26 tRPC routers.

Svelte 5NestJStRPCPostgreSQLSocket.ioDrizzle

158 DB tables7+ user rolesReal-time judgingEnterprise scale

Production

Powerlifting Gym Platform

Dual Membership · $565k+ Processed

Online coaching and gym membership platform with 780M+ KRW processed. Video feedback coaching, KG Inicis payment integration, Firebase real-time chat, gym visit heatmaps, and earnings analytics.

Vue.jsPHPKG InicisFirebaseAWS

$565k+ processedVideo coachingReal-time chatPayment gateway

Production

EdTech SaaS Platform

6+ Years in Production · $1,200/month

Multi-tenant test management platform with native mobile app. Real-time test engine with anti-cheat timers, canvas annotations via Fabric.js, auto-grading, analytics dashboards, role-based access.

Vue 3Ionic 7CapacitorNode.jsPostgreSQLAWS

4,000+ users3 paying clients6+ years uptimeNative mobile app

Services

What we build

Complete SaaS Platforms

Full systems from database schema to deployment. Multi-tenant architecture, role-based access, CI/CD pipelines. We ship the whole thing.

Payment Integration

Stripe, KG Inicis (Korean gateway), subscription management, event registration payments. International payment processing with AES encryption.

Real-time Systems

Live scoring, collaborative editing (Y.js/CRDT), Socket.io event streaming. Built for systems where milliseconds matter.

AI Integration

Multi-pass AI analysis, async job queues via pgBoss, LRU key rotation. Production-grade AI integration — not a wrapper around an API call.

API Architecture

GraphQL (Apollo, code-first), tRPC, REST. Type-safe from database to frontend. Designed for complex multi-role systems.

Security & Auth

OAuth (Google/GitHub), MFA with TOTP + WebAuthn/passkeys, JWT, rate limiting, Helmet.js. Enterprise-grade security from day one.

$ ▌

Technology

The stack

Frontend

Svelte 5SvelteKitVue 3ReactIonic 7Capacitor

Backend

NestJSNode.jsPHP

API

GraphQLtRPCRESTApollo

Database

PostgreSQLMySQLRedisDrizzle ORMPrisma

Real-time

Socket.ioY.jsHocuspocusFabric.js

AI API IntegrationpgBossMulti-pass analysis

Infrastructure

AWSCloudflare R2RailwayVercelDocker

Security

OAuthWebAuthnTOTP MFAJWTHelmet.js

About

Background

We design and build complete SaaS platforms from the ground up — database schema to deployment pipeline. That's architect, developer, and DevOps in one team.

Our software powers two national sports organizations: the Official Mobile Scoreboard of USA Wrestling and the Korean Powerlifting Association's complete federation platform. We've shipped systems with real-time scoring, international payment processing, AI-powered analysis, collaborative editing, and complex multi-role architectures.

Our platforms have processed over $1M in transactions and served 5,000+ users. We've operated revenue-generating production systems for 6+ years. We bring 20 years of domain expertise in education and sports — we understand both the technical architecture and the end-user experience.

DE German · Native

KR Korean · Fluent

JP Japanese · Intermediate

EN English · Fluent

6+ Years in production

5k+ Users served

$1M+ Transactions processed

2 National sports orgs

Get In Touch

Let's build something together

Currently available for select platform builds and consulting engagements. If you need a complete system — schema to deployment — let's talk.

smkn@esdikay.com

Available at $175–200 / hour · Project-based pricing available

We design & build complete platforms