Andrey Lapchik

Full-Stack Developer

Full-stack developer building high-performance applications and real-time systems. Passionate about clean code and optimal performance.

Available for full-time positions and contract work
React/Next.js NestJS/Node.js TypeScript Web3 / DeFi
Andrey Lapchik - Full-Stack Developer
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Professional Journey

Freelance Full-stack Developer

Current

Independent • Aug 2025 - Present

Building modern e-commerce platforms and high-converting landing pages for diverse clients.

React/Next.js E-commerce Trading solutions Payment Integration

Full-stack Developer

8 months

Cryptonit • Nov 2024 - Aug 2025

Built high-performance crypto trading platform with real-time data processing and scalable architecture.

React/TypeScript Node.js/NestJS Redis/WebSockets PostgreSQL

Lead Frontend Developer

6 months

Cryptonit • Jul 2024 - Dec 2024

Led team of 5 developers building trading interfaces with advanced charting and 40% UX improvement.

TradingView Charts Performance Profiling Real-time UI UX Optimization

Freelance Developer

8 months

Independent • Nov 2023 - Jul 2024

Delivered 5+ custom web applications for SMBs including e-commerce stores and business tools.

E-commerce Payment Systems Business Tools Landing Pages

Highlighted Work

Cryptonit

2024–2025
Commercial

High‑Performance Crypto Trading Platform (Solana)

Fullstack • ex‑Lead Frontend

Low‑latency Solana trading: real‑time UI, Protobuf WS, Redis caching.

React TypeScript NestJS Nats.io PostgreSQL Redis
  • Advanced TradingView charts with custom overlays
  • Lossless Protobuf WebSocket streaming

Token Creation Platform

2024–2025
Commercial

Token creation, wallet warming, and realtime trading tools

Frontend • international team • NDA

Built performant UI for token management and wallet warming with live data.

Vite React TypeScript Tailwind Zustand Docker
  • Wallet warming dashboard with live performance metrics
  • Real-time trading tools and token data streaming

Lapchess

2023–2024
Pet project

Online Chess Platform

Full-stack • sole developer

Realtime multiplayer chess with Socket.IO, secure auth, and configurable time controls.

React Redux Toolkit Express.js Socket.IO JWT Docker
  • Configurable time controls and public/private rooms
  • Server-validated moves with reconnection sync

Education & Learning

Formal Education

University of Latvia

Current

Computer Science • 2024-present

Currently in the 2nd year, 3rd semester, with a focus on computer science fundamentals and practical applications in software engineering.

Riga State Classical Gymnasium

Completed

Electronics & Telecommunication Faculty • 2021-2024

Gained technical foundation in electronics and communication systems, which built a strong analytical base for my programming journey.

Courses & Training

Datorium Coding Courses

Python & JavaScript • 2022

Hands-on training in Python and JavaScript, with a focus on algorithms, problem-solving, and building several small projects.

Fireship Courses

Next.js • 2023

Learned advanced concepts of Next.js and server-side rendering, applied later in production projects.

Technical Expertise

Frontend Development

React/Next.js
TypeScript
Tailwind CSS
Redux/Zustand
TradingView Charts

Backend Development

Node.js/NestJS
WebSockets/SSE
REST APIs/GraphQL
Redis/PostgreSQL
Blockchain APIs

Tools & DevOps

Git/Docker
Vite/Webpack
Sentry/LogRocket
CI/CD Pipelines
AWS/Vercel

Language Proficiency

Russian
Native
English
Professional
Latvian
Fluent

Achievements & Soft Skills

Key Achievements

Crypto Trading Platform

Built full-stack Solana trading platform competing with Axiom and Photon

Scalable Backend Architecture

Designed scalable architecture reducing latency in real-time systems

10+ Production Systems

Delivered e-commerce platforms, financial applications, and enterprise solutions for clients

Soft Skills

International Collaboration

Worked with international teams across time zones on NDA projects

Client Communication

Translating business goals into technical requirements and solutions

Continuous Learning

Active in hackathons, coding challenges, and discussions with senior engineers

What People Say

"Built crypto platform frontend with sub-100ms latency. Led WebSocket optimizations."

Senior Backend Developer

Cryptonit

"Delivered scalable e-commerce solution. Handles high traffic seamlessly."

E-commerce Client

Retail Startup

"Proven collaborator in diverse teams maintaining quality and deadlines."

International Team Lead

Global Tech Company

Ready to Work Together?

Join the list of satisfied clients and colleagues who have experienced exceptional results.

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Get In Touch

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Get In Touch

Feel free to contact me

I'm always open to new connections, innovative ideas, startup collaborations, and creative partnerships. Let's build something amazing together!

Connect With Me

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© 2025 Andrey Lapchik. All rights reserved.