Ihor

Ihor Kopieichykov
FULLSTACK DEVELOPER

CONTACT PROFILE
[открыть контакты](см. выше в блоке «контактная информация») Full-stack Web Developer with 3+ years of commercial
experience building scalable web applications using React,
in Linkedin
Next.js, Express.js, and NestJS. Skilled across the entire
[открыть контакты](см. выше в блоке «контактная информация») development lifecycle — from UI/UX design and backend
architecture to deployment with Docker and CI/CD.
Kharkiv, Ukraine
Experienced in both collaborative team environments and
independent project delivery. Strong command of TypeScript,
SKILLS SQL, and modern development tools.
Upper-Intermediate (B2) English, enabling smooth
JavaScript (CJS, ESM), Typescript communication in international teams.
React.js, Next.js, Redux, RTK Query, Axios
Node.js, Express.js, Nest.js, Strapi, RabbitMQ WORK EXPERIENCE
Jest (unit, E2E tests), Swagger
Fullstack Developer Aug 2023 - Present
Webpack, Vite, Turbopack,
ABNK Premium Systems
Docker (Compose, Swarm)
OpenAI API, LLM, Vector database Over the past two years at ABNK Premium Systems, I’ve been a
Monorepo, Multi-repo core contributor to two major product initiatives, working
Domain-Driven Design, OOP across the entire tech stack — from scalable backend services to
HTML5, CSS3, SASS(SCSS), complex frontend interfaces. I’ve developed and maintained
MaterialUI, Ant Design, Chakra UI systems using Express.js, NestJS, PostgreSQL, MongoDB,
HTTP, REST API, GraphQL, Web sockets, Firebase, React.js, and Next.js, and applied architectural
JWT, CORS patterns like DDD, microservices, and monorepos. Across both
SQL, noSQL, Database designing knowledge projects, I ensured 95%+ test coverage with unit and E2E tests,
MongoDB, MySQL, Oracle, PostgreSQL, and emphasized clean, maintainable code. During my
Firebase contribution I significantly optimized both database queries and
Github, Bitbucket, CI/CD, npm, semver server response performance — in some cases achieving up to
Git, Linux Terminal, Chrome DevTools 10x faster response times
VSCode, Postman, Figma In the first project, I led the development of an AI-powered
Jira, Trello, Notion, Miro, Scrum, Agile system integrating OpenAI’s APIs, LLMs, vector databases,
English: B2 (Upper Intermediate) and RabbitMQ. This microservices-based solution was split into
6 repositories, with 3 fully owned by me. I built a widget that
can be embedded on external websites via a single-line script,
EDUCATION and significantly optimized database and server response times.
In the second project, I worked within a monorepo architecture,
Master of Computer Science gaining hands-on experience with NestJS, E2E testing, and
National Technical University «Kharkiv complex data integrations. I contributed to the backend,
Polytechnic Institute» connecting PostgreSQL and Firebase, and implemented
2024 - Present integrations with Google Analytics. On the frontend, I built a
feature-rich admin dashboard that included dynamic data
Bachelor of Computer Science
tables, complex forms, and a custom UI for managing nested
Kharkiv National University of
hierarchical structures (Nested Set Model).
Radio Electronics
2020 - 2024 Frontend Developer Jan 2023 - Sep 2023
Remote Helpers
At Remote Helpers, I worked as a frontend developer,
participating in 4 different projects ranging from landing pages
to complex dashboards and progressive web apps.
I worked extensively with React.js, Next.js, Strapi, and modern UI
libraries such as Material UI and Ant Design. I was responsible
for implementing responsive UIs, client-side logic, and seamless
API integrations, using both REST and GraphQL.
One of my key contributions was building a fully responsive
landing page from scratch using React.js, followed by the
development of several internal dashboards that displayed
dynamic content powered by Strapi. I implemented features
like localization, animations, and content rendering logic
based on user roles and permissions. I also created a PWA
(Progressive Web App) using Next.js, managing the full
development lifecycle from setup to deployment.
In one outstaff project for an international client based in Israel, I
worked on a data-intensive dashboard built with React.js and
Recharts.js. I handled real-time data updates via WebSockets,
rendering interactive statistical graphs and charts. This project
improved my understanding of working with live data streams
and performance optimization in React-based applications.
Frontend Developer Jun 2022 - Dec 2022
SoftServe
As part of a commercial project, I led a team of four frontend
developers in building a platform similar to LinkedIn. I was
responsible for designing the project architecture, overseeing
the implementation of the user interface, and coordinating team
tasks. We successfully delivered a functional MVP version of the
product.

PROFESSIONAL EDUCATION
Node.js Internship Jan 2023 - Jul 2023
ABNK Premium Systems
Completed a comprehensive internship program focused on
modern backend development with Node.js. Gained strong
theoretical and practical knowledge of core Node.js principles,
including client-server architecture, REST APIs, and
asynchronous programming using callbacks, promises, and
async/await.
JavaScript, ECMAScript, Programming Basics, OOP
Node.js, Express.js, JS Advanced, Linux, Terminal
Advanced programming principles and knowledge.
Database design

Crash Course "JS Fundamental" Feb 2022 - Jun 2022
SoftServe Academy
Completed a foundational internship focused on JavaScript
development, covering both ES5 and ES6+ standards. Gained
hands-on experience with browser scripting, DOM
manipulation, OOP, and asynchronous programming.
JavaScript (CJS, ES6), variable scope, hoisting, closures
Modules, error handling, self-invoking and recursive
functions
DOM interaction and dynamic content using JS