Mladich Sigil
Status: Delivered

Case Study: TON Arena

Telegram betting dApp with TON blockchain payments: Next.js/Nest.js, 40% faster loads, investor-delivered.

links
-220%
Load time
+40%
Perf gain
<3s
TX speed
99.9%
Uptime
description

This flagship betting platform and Telegram dApp represents enterprise-level execution, combining a high-performance web frontend with seamless TON blockchain integration for cryptocurrency payments. As lead developer, I inherited a troubled codebase, orchestrated a complete architectural overhaul, and delivered a production-ready solution to investors in February 2026.

The frontend leverages Next.js with Radix UI components and Zustand for state management, achieving pixel-perfect responsiveness and 40% faster load times through targeted optimization. A full backend rewrite from legacy Python to Nest.js/TypeScript with PostgreSQL + Sequelize ORM eliminated bottlenecks, slashing page loads from 7 to 2 seconds while enhancing security and scalability.

Telegram Mini App integration creates fluid user onboarding with TON Connect for wallet authentication and payments, bridging web2 betting mechanics with web3 infrastructure. The crawler component, developed under my specifications by a specialist, ensures real-time data accuracy. This end-to-end ownership—from planning through investor handoff—demonstrates mastery of full-stack TypeScript ecosystems and blockchain deployment at scale.

Collaboration with designers, marketers, and crypto specialists aligned technical excellence with business objectives, producing a cohesive platform ready for high-stakes operations.

screenshots
frontend
Next.js
Typescript
RadixUI
Zustand
i18n
TON chain
backend
Nest.js
Typescript
Sequelize
TON chain
Swagger
data
PostgreSQL
third-party
-
other
Telegram
challenge

Taking over a troubled multi-team project mid-flight required simultaneously rewriting backend systems, redesigning frontend performance, and integrating complex TON blockchain payments while coordinating distributed specialists—all under investor timeline pressure.

conclusion

This project showcases leadership in modern TypeScript stacks, blockchain integration, and enterprise delivery. The 40% performance uplift and successful investor handoff validate the ability to rescue, rebuild, and scale high-stakes platforms under real business constraints.

execution phases
#1 Assessment & Planning

Analyzed legacy issues, architected Nest.js replacement and performance roadmap.

#2 Backend Rewrite

Converted Python to Nest.js/TypeScript with PostgreSQL optimization.

#3 Frontend Redesign

Refactored Next.js UI with Radix, Zustand, and 40% load time reduction.

#4 TON Integration

Implemented Telegram dApp with blockchain payments and wallet connect.

#5 Crawler Coordination

Specified and guided real-time data component development.

#6 Security & Handoff

Hardened platform and delivered to investors with full documentation.

TON Arena | TON blockchain based betting dApp in telegram | Alex Mladich