Andrew Katsewich
Web & Mobile Developer
Vilnius, Lithuania
I am a software engineer with 8 years of commercial experience specializing in development using React, React Native, and Next.js. Throughout my career, I contributed to more than 15 commercial projects, both as a part of a team and the ones I led as a solo developer. Experienced in diverse web projects, I deliver effective frontend solutions with a strong focus on product development and the end user. In development I prioritize lightweight, high-performance, and extensible solutions. AI tools like GitHub Copilot are also part of my workflow for enhanced productivity.
React
Next.js
React Native
Convex
SolidJS
Astro
Featured Projects
INFINITY Webshop
Nov 2023 - Jun 2024
Academy platform with various options for personalizing a plan, built on Next.js, React, NextAuth, Next-intl, Tailwind CSS, DaisyUI, and Zustand.
Mocaptrade
Aug 2023 - Nov 2023
Marketplace for 3D animation animations, built on Next.js, React, Three.js, Zustand, and Tailwind CSS.
Starly
Dec 2021 - May 2023
Launchpad and marketplace for gamified NFT collections, built on the FLOW blockchain, React, Redux, and Styled-components.
Bored & Lucky
Jul 2022 - Dec 2022
Ethereum-based NFT raffle platform, build on Next.js, Styled-components, and Wagmi.
Totle Swap
May 2019 - Mar 2020
Ethereum-based DEX built on React, Redux, and Typescript, with backoffice built with GraphQL, Node.js, and Typescript.
Work History
Coherent Solutions
Sep 2025 - Present
Reworked a web app and browser extension for a tax management platform. Implemented a major feature in the investment process of a real estate investment platform.
EPAM
Jan 2025 - Aug 2025
Migrated websites for a big enterprise client using Next.js. Set a standard on efficient use of dev toolchain.
CreativeIT
Sep 2021 - Nov 2024
Created a total of 8 projects with React and Next.js, and contributed to team growth through mentoring and conducting technical interviews.
Totle
May 2019 - Jun 2020
Created a new lightweight front-end app with React + Redux. Integrated our back-end service with various wallets. Created backoffice-related services.
WEB Secret
Oct 2018 - Nov 2018
Built a POC DAO DApp on Ethereum smart-contracts, React.js, and Web3.js, and added test coverage on JavaScript with Mocha + Chai.
TechBüro
Jan 2018 - Oct 2018
Created smart-contracts for 2 internal projects. Created multiple POC prototype apps. Integrated communications with Ethereum on both backend and frontend sides.