Andrey Lapchik

Full-Stack Developer

Three years building real-time products for money-critical systems — live game clients, trading terminals, and the data layers behind them.

Open to full-time roles — Riga, hybrid or remote (EU)
React/Next.jsTypeScriptNestJS/Node.jsPixiJS / WebGLWeb3 / DeFi
Andrey Lapchik - Full-Stack Developer
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Professional Journey

Frontend Developer

9 mos

Proxy Live Solutions™ • Dec 2025 - Present

Game clients, studio presenter tooling and back-office systems, leading mobile performance and stability on low-end devices.

React / TypeScriptPixiJS / WebGLComplianceMobile Performance

Full-stack Developer

10 mos

Cryptonit • Mar 2025 - Dec 2025

Promoted from frontend to owning backend services — real-time market data over WebSocket with Redis caching and backpressure.

Node.js / NestJSWebSockets / ProtobufRedis / PostgreSQLDocker

Lead Frontend Developer

8 mos

Cryptonit • Aug 2024 - Mar 2025

Lead frontend on a crypto trading terminal — charting, order entry, order book and portfolio on one streaming data layer.

React / TypeScriptTradingView ChartsReal-time UIRender Optimisation

Freelance Frontend Developer

1 yr 2 mos

Freelancer.com • Jul 2023 - Aug 2024

Delivered 10+ production systems for international clients — e-commerce, financial dashboards and internal business tools.

React / Next.jsE-commerceCore Web VitalsClient Delivery

Highlighted Work

Proxy Live Solutions™

2025–Present
Commercial

Live-Streamed Real-Money Gaming Platform

Frontend Developer

Browser game clients for live-streamed real-money gaming, running on a tight frame and memory budget.

ReactTypeScriptPixiJSWebGLWebSockets
  • Memory and GPU management on low-end devices
  • Compliance-driven configuration and localisation

Cryptonit

2024–2025
Commercial

Low-Latency Solana Trading Platform

Full-stack • ex-Lead Frontend

The data layer behind a Solana trading terminal, from market feed through cache to the rendered book.

ReactTypeScriptNestJSPostgreSQLRedis
  • Built TradingView charting against a live datafeed
  • Virtualised the order book for high-frequency updates

Trading Dashboard

2024–2025
Commercial

Multi-Account Portfolio Tooling (NDA)

Frontend • international team • NDA

Streaming data layer and dashboard UI for operating many live accounts, with real-time per-account metrics.

ViteReactTypeScriptTailwindZustandDocker
  • Live metrics across concurrent account sessions
  • Kept streaming state off the render path

Education & Learning

Formal Education

University of Latvia

Completed

Computer Science • 2024–2025

Algorithms, data structures and software engineering fundamentals, taken alongside a full-time frontend engineering role.

Riga State Classical Gymnasium

Completed

Information Technology Specialisation • 2021–2024

Specialised in information technology, building the mathematical grounding behind my later work on real-time systems.

Courses & Training

Datorium Coding Courses

Python & JavaScript • 2022

Hands-on training in Python and JavaScript, focused on algorithms and problem-solving across several small projects.

Fireship Courses

Next.js • 2023

Advanced Next.js and server-side rendering — routing, data fetching and caching, used in client work the same year.

Technical Expertise

Frontend Development

React / Next.js
TypeScript
PixiJS / WebGL
Redux / Zustand
TradingView Charts

Backend Development

Node.js / NestJS
WebSockets / Protobuf
REST APIs / GraphQL
PostgreSQL / Redis
Real-Time Data Pipelines

Tools & DevOps

Git / Docker
Vite / Webpack
Storybook
CI/CD Pipelines
AWS / Vercel

Language Proficiency

Russian
Native
English
Professional
Latvian
Fluent

Achievements & Soft Skills

Key Achievements

Two Games Built From Scratch

Owned frontend architecture, state and data layers on two greenfield games

Mobile Performance & Stability

Lead memory, GPU and crash resolution on low-end mobile devices

Promoted to Full-Stack Ownership

Moved from lead frontend to owning backend market-data services in seven months

Soft Skills

Cross-Functional Delivery

Work with backend, QA, design, product and the core platform team daily

Engineering Standards & Review

Set frontend standards and run code review, owning the client-service contract

Regulated-Industry Discipline

Build to compliance-driven configuration and certification requirements

What People Say

"Took on the mobile crash and memory work nobody wanted, and closed it out."

Team Lead, Game Client

Proxy Live Solutions™

"Owned the client side of our Protobuf migration, backpressure edge cases included."

Senior Backend Engineer

Cryptonit

"Turned a vague brief and a live data feed into a dashboard our operators use daily."

Product Lead

Fintech platform (NDA)

Open to Full-Time Roles

Riga-based — on-site, hybrid or remote across the EU. Available immediately.

Get In Touch

Get In Touch

Send Message

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Location

Riga, Latvia

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!

Book a Meeting

Schedule a 30-minute consultation

Connect With Me

Follow my work, check out my projects, or reach out directly through your preferred platform.

© 2026 Andrey Lapchik. All rights reserved.