Ян

Yan Marinov
Senior Full-Stack Developer | Node.js / React / TypeScript /
Solidity

📍 Varna, Bulgaria​
💼 Remote / Full-time / Contract / Project-based
✉️ [открыть контакты](см. выше в блоке «контактная информация»)​
💬 Telegram: @Yan_Marinov​
🌐 GitHub: github.com/zy-jay​
🔗 LinkedIn: [открыть контакты](см. выше в блоке «контактная информация»)

​
About Me
Middle+ Full-Stack Developer with 5+ years of experience building scalable backend
systems, frontend applications, microservices, real-time systems, automation tools, and
blockchain-based products.

Strong expertise in TypeScript, Node.js, React, API architecture, databases, and
distributed systems. Experienced in developing complete production-ready applications
from scratch, including backend infrastructure, frontend interfaces, real-time
communication systems, bots, automation software, and cloud deployment.

Worked on high-load systems, financial applications, trading infrastructure, Telegram
MiniApps, desktop applications, and DeFi protocols.

Main technology focus:

●​ Node.js / TypeScript
●​ React / Next.js
●​ REST APIs / WebSockets
●​ Microservices architecture
●​ PostgreSQL / MongoDB / Redis
●​ Docker / AWS / Cloud Infrastructure

Additionally experienced in blockchain technologies, smart contracts, and Web3
infrastructure across EVM, Solana, and TON ecosystems.

Reliable and responsible developer with strong business-oriented thinking and
understanding of product goals. Focused on delivering scalable and maintainable
products rather than writing code for the sake of code.

Actively involved in architecture discussions, technical decision-making, optimization,
and product improvement processes.
Core Expertise
●​ Full-Stack Development
●​ Backend Architecture
●​ REST APIs & WebSockets
●​ Real-time Systems
●​ Microservices
●​ Cloud Infrastructure
●​ Database Design
●​ High-load Applications
●​ Trading & Financial Systems
●​ Desktop Applications
●​ Telegram MiniApps & Bots
●​ Blockchain & Web3 Infrastructure

Work Experience
SumiDAO — Senior Full-Stack Developer
2024 — 2025

Meme Token Launch Platform

Developed a launch platform and trading infrastructure for EVM and Solana ecosystems.

Responsibilities:

●​ Backend architecture
●​ Frontend development
●​ API integrations
●​ Trading & liquidity systems
●​ Blockchain event processing
●​ Smart contract integrations
●​ Real-time systems

Tech Stack:

TypeScript, Node.js, React, Next.js, MongoDB, Redis, WebSockets, Solidity

DegenSoft — Full-Stack Developer
2022 — 2023

On-chain Automation Desktop App

One of the core developers of a desktop application for automating large-scale
blockchain activities.

Responsibilities:

●​ React + Electron desktop app development
●​ Backend integrations
●​ Wallet management systems
●​ Transaction processing
●​ Automation flows
●​ UX for multi-account operations

Tech Stack:

React, Electron, TypeScript, Node.js, Redis, WebSockets

Selected Projects
Euler Protocol Fork
Complete implementation of a lending protocol infrastructure.

Responsibilities:

●​ Smart contracts
●​ Backend services
●​ API layer
●​ Indexer
●​ Frontend
●​ Liquidation system

Stack:

Node.js, Solidity, PostgreSQL, React, TypeScript

VoltRock
Fork of Liquity V1 protocol.

Responsibilities:
 ●​ Backend architecture
●​ Frontend development
●​ Smart contract integrations

Stack:

React, Node.js, Solidity, PostgreSQL

https://voltrock.netlify.app/

X-Roach (Telegram MiniApp)
Real-time multiplayer backend for a racing game with TON-based betting mechanics.

Features:

●​ Multiplayer architecture
●​ Real-time synchronization
●​ Betting mechanics
●​ Microservices
●​ Redis-based infrastructure

Stack:

Node.js, Express, Redis, WebSockets

Telegram Stars Platform
Telegram bot and payment platform with:

●​ Crypto payments
●​ Card payments
●​ Referral system
●​ TON payment gateway

Audience:

10K+ users

Uniswap V2 Fork
Full implementation including:

●​ Backend services
●​ Frontend
 ●​ Analytics dashboard
●​ Subgraph
●​ Smart contracts

AlphaWallet Fork — Mobile Banking App
Banking-style mobile application based on blockchain infrastructure.

Features:

●​ Wallet system
●​ Fixed-rate token model
●​ Mobile UX
●​ Payment flows

Skills & Technologies
Backend
●​ Node.js
●​ TypeScript
●​ Express.js
●​ Nest.js
●​ REST APIs
●​ WebSockets
●​ Redis
●​ Microservices

Frontend
●​ React
●​ Next.js
●​ Redux
●​ MobX
●​ Jotai
●​ Ant Design
●​ Material UI
●​ Electron

Databases
●​ PostgreSQL
●​ MongoDB
●​ MySQL
DevOps & Cloud
●​ Docker
●​ AWS
●​ Google Cloud
●​ Railway

Blockchain / Web3
●​ Solidity
●​ Ethers.js
●​ Web3.js
●​ Wagmi
●​ RainbowKit
●​ Moralis
●​ TON
●​ Solana/web3.js

Soft Skills
●​ Reliable and responsible
●​ Business-oriented mindset
●​ Strong problem-solving skills
●​ Product-focused engineering mindset
●​ Architecture & system design participation
●​ Technical decision-making
●​ Optimization & scalability focus
●​ Team collaboration
●​ Proactive idea generation

Inspiration
Building scalable, reliable, and high-quality software products.​
Passionate about modern technologies, distributed systems, and product engineering.