Ян

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

📍9 Varna, Bulgaria
💼 Remote / Full-time / Contract / Project-based
✉️ [відкрити контакти](див. вище в блоці «контактна інформація»)
💬 Telegram: @Yan_Marinov
🌐 GitHub: https://github.com/zy-jay
🔗 LinkedIn: [відкрити контакти](див. вище в блоці «контактна інформація»)


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/Next, 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 / AI Agents

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

Redduck.io - Senior Full-Stack Developer

2025 - 2026

Tech Stack:

TypeScript, Node.js, React, Next.js, Postgres, Redis, Solana.




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
SodaPopFi.com

Full-stack development. Developed the architecture of a unique non-custodial payment gateway for accepting
crypto payments. Designed, developed, packaged, and delivered the product to users.

Responsibilities:

● Smart contracts
● Backend services
● API layer
● Docs Frontend
● Frontend Lending
● Frontend Cabinet/Dashboard

Stack:

Node.js, Solidity, MongoDB, Nest.Js, React+vite, Next.js, TypeScript

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
● Redis

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.