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Aleksei User

@alekseiuser6

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Senior Full-Stack Developer at ARQ who brought an AI video generation platform from scratch to production.

Portugal

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At ARQ, I led frontend development and technical direction for an AI video generation platform, taking it from scratch to production. I designed an LLM-based video generation agent with Python, LangGraph, and LangChain, and connected it to the product’s content workflows.

I also engineered a real-time collaborative canvas for AI content generation, using Yjs for state synchronization and WebSockets for communication. I built a video rendering service and designed REST APIs for the generation pipeline and frontend–backend integration.

As a freelance developer, I’ve delivered client projects for Web2 and Web3 startups, including backend services, Solidity smart contracts, and wallet-based payment flows. At Yandex, I developed features for Yandex.Eats and improved its Lighthouse Accessibility score from about 70% to about 90%.

Experience

Work history, roles, and key accomplishments

Current

Senior Full-Stack Developer

Current

ARQ

Aug 2025 - Present (1 year 3 months)

Led frontend development and technical direction for an AI-powered video content creation platform, defining system architecture and driving production release. Designed and implemented an LLM-based video generation agent and engineered a real-time collaborative canvas.

TypeScript Python LangGraph Lang Chain React Next.js Zustand Yjs

Xyflow

GSAP Tailwind Git

Current

Freelance Full-Stack Developer

Current

Web2/Web3 startups and private clients

Feb 2024 - Present (2 years 9 months)

Delivered 9 client projects end to end, from MVPs to production-ready products, for Web2 and Web3 startups. Built backend services in Node.js and Python, designed Solidity smart contracts, and implemented Web3 authentication and payment flows.

TypeScript Python NodeJS React Next.js Svelte Solidity EthersJS Wagmi Hardhat Foundry GSAP Tailwind

Senior Full-Stack Developer

NfinityAI

May 2024 - Jul 2025 (1 year 2 months)

Took ownership of a new AI video generation product from the ground up, defining frontend architecture and leading implementation. Designed REST endpoints, optimized async request handling, and deployed an ERC-20 smart contract for internal credit token.

TypeScript Svelte React Next.js MobX

Xyflow

GSAP Tailwind Solidity EthersJS Wagmi Hardhat Git

Frontend Developer

Yandex

Oct 2023 - Feb 2024 (4 months)

Developed new features and UI components for Yandex.Eats, refactored legacy code, and improved frontend architecture. Improved accessibility, raising Lighthouse Accessibility score from ~70% to ~90%, and wrote end-to-end tests with Playwright.

TypeScript React Next.js MobX Playwright

Frontend Developer

Bear Head Studio

Sep 2021 - Sep 2023 (2 years)

Built responsive UI components and pages for a game catalog, product pages, and checkout flow. Integrated APIs for product listings, user accounts, payments, and order history, and improved page load speed with lazy loading and image optimization.

TypeScript React Next.js MobX SCSS Axios

Education

Degrees, certifications, and relevant coursework

University of Lisbon, ISEG — School of Economics and Management

MSc, Management Information Systems

2025 -

Pursuing an MSc in Management Information Systems with coursework in Data Management, Information Systems, Programming for Data Science, IT Project Management, and e-Business Technologies. Expected completion in June 2027.

University of Lisbon, ISEG — School of Economics and Management

MSc, Management Information Systems

2025 -

National Research University Higher School of Economics (HSE)

BSc, Information Science and Computation Technology

2021 - 2025

Grade: 7.9/10.0

BSc in Information Science and Computation Technology with a GPA of 7.9/10.0. Coursework included Algorithmization and Programming, Computer Science, Object-Oriented Programming, Databases, Programming of Web Services and Embedded Systems, and Mobile Applications Development.