Контактна інформація

Отримати контакти цього кандидата можна на сторінці https://www.work.ua/resumes/17995788/

Досвід роботи

Senior Software Engineer, Frontend

з 05.2025 по нині (1 рік 5 місяців)
Trustyfy, Дистанційно (IT)

Fintech / payments product (crypto banking cards).
- Built the customer web app in React, Next.js and TypeScript: onboarding, card management, transaction history and live balances over REST and WebSocket APIs. Forms validated with Zod, errors tracked in Sentry.
- Built the internal backoffice: role-based access, compliance dashboards, transaction monitoring and multi-step approval flows.
- Designed the shared accessible design system and the modular frontend architecture used by both apps; run code reviews.

Full Stack Engineer (Contract)

з 12.2024 по 07.2025 (8 місяців)
ZeuZ, Дистанційно (IT)

Crypto trading platform.
- Sole developer: built the trading platform with multi-account support, cross and isolated margin trading, and account statistics.
- Integrated Web3 wallets (MetaMask, Trust Wallet) so users trade without traditional exchange onboarding.
- Designed the trading UX and tested it with users.

Software Engineer (Contract)

з 08.2024 по 04.2025 (9 місяців)
Harvey, Дистанційно (IT)

AI platform for the legal industry.
- Built UI for AI legal tools: document-analysis workflows and LLM chat interfaces over legal data.
- Worked with the AI and backend teams to bring LLM features into the product frontend.
- Contributed to the design system and component library.

Senior Frontend Developer (Contract)

з 07.2024 по 11.2024 (5 місяців)
Optimism Foundation, Дистанційно (IT)

Blockchain project under NDA: crypto wallet interfaces and DeFi.
- Implemented decentralized authentication, encryption and token integration together with the backend and security teams.
- Optimized UI components for speed and scale.

Frontend Team Lead / Full-Stack Web3 Developer

з 01.2023 по 07.2024 (1 рік 7 місяців)
Prof-IT Blockchain, Дистанційно (IT)

- Led a team of 6 developers building a crypto wallet; Next.js performance work (code splitting, lazy loading, caching).
- Delivered Chrome extensions for blockchain integration.
- Set up the code-review process and weekly knowledge-sharing sessions.
- Sole developer on the Patex ecosystem: reusable components, Jest and Cypress tests, several feature launches.

Senior React Developer (Contract)

з 03.2022 по 01.2023 (11 місяців)
Coinbase, Дистанційно (IT)

- Added analytics and real-time data visualizations to internal tooling.
- Optimized Redux state management to cut load times.
- Built content-management tooling for the admin team.

Frontend Developer

з 02.2021 по 03.2022 (1 рік 2 місяці)
Nimbus Platform, Дистанційно (IT)

- Worked on GraphQL data fetching in a Next.js codebase with teams in Europe and North America.
- Wrote unit tests, refactored components, improved documentation and onboarding.

Frontend Developer

з 01.2017 по 01.2021 (4 роки)
INC4, Дистанційно (IT)

- Blockchain application development for Ambrosus, including ICO and platform launches.
- Modernized legacy React applications and built responsive landing pages.
- Mentored junior and mid-level developers through code reviews and knowledge-sharing sessions.

Освіта

National University of Life and Environmental Sciences of Ukraine

Master's degree, Computer Systems Analysis, Київ
Вища, з 2012 по 2018 (6 років)

Додаткова освіта та сертифікати

Немає додаткової освіти та сертифікатів.

Знання і навички

• JavaScript
• React
• TypeScript
• Node.js
• Redux
• Next.js
• REST API
• Git
• React Query
• GraphQL
• WebSocket
• Tailwind CSS
• Ant design
• Material UI
• Ethers.js
• Jest
• Playwright
• CI/CD
• Blockchain

Знання мов

• Англійська — просунутий
• Українська — вільно
• Італійська — початковий

Додаткова інформація

I'm a senior frontend developer with 9+ years of commercial work. Most of it is React, Next.js and TypeScript; I also write Node.js on the backend.

Recent projects: a fintech customer app and its backoffice (onboarding, cards, transactions, approvals), Web3 wallet and trading interfaces (ethers.js, viem), and AI tools for lawyers with document analysis and LLM chat. I build shared component libraries, lead frontend work and do code reviews. Hands-on WebGL as well.

I live in Castel San Giovanni (Piacenza), Italy, and I'm looking for a remote full-time role in a product team. I work in English.

LinkedIn: [відкрити контакти](див. вище в блоці «контактна інформація»)
GitHub: https://github.com/melnicenkovadik