Особисті дані приховані

DMITRIY KOZII
F U L L S T A C K J S D E V E L O P E R

[відкрити контакти](див. вище в блоці «контактна інформація»)
SUMMARY
@kozzii
I’m a software engineer with 2 years of commercial experience.
[відкрити контакти](див. вище в блоці «контактна інформація») I've worked on a variety of large-scale solutions, including developing a
project from scratch in TypeScript. I have significant experience in
Zaporizhzhya, Ukraine
frontend (React), and have good experience on the backend using
LinkedIn GitHub Node.js.

LANGUAGE EXPERIENCE
Ukrainian (Native) FULL STACK JS DEVELOPER
English (Intermediate) DevIT.group
Russian (Native) Feb 2022 - Present

Developed and supported applications for the Shopify platform,
including client and server side architecture design.
SOFT SKILLS Implemented new features, fixed bugs and optimized system
performance.
Management Skills Improved the user interface, which led to an increased flow of
Creativity new users.
Actively cooperation with the team helping in optimizing
Responsible
workflows, improving project efficiency and implementing
Multitasking
innovative architectural approaches.
Communicative Provided mentorship to the new team members, aiding with their
Critical Thinking professional development and integration into the project.
Leadership
HARD SKILLS
JavaScript, Typescript REST API, GraphQL
EDUCATION HTML, CSS MongoDB, PostgreSQL
React, Redux Toolkit KoaJS, ExpressJS
BACHELOR'S DEGREE IN
SOFTWARE ENGINEER SCSS, Styled Components, CSS Mongoose, Prisma
Modules Storybook, Loki
Zaporizhzhya National Technical
University MaterialUI, Shopify Polaris Internationalization i18n

Sep 2019 – Jun 2023 Webpack Docker
Jest, RTL Git
 PROJECTS OVERVIEW

ReSell
ReSell is an application for Shopify, designed to enhance the process of upselling products to customers
both during and after placing an order. It is equipped with a variety of tools for fine-tuning and customizing
widgets that integrate directly into the order payment page, ensuring flexibility and efficiency in product
promotion.

Responsibilities and Achievements

Developed and integrated new features, supported and improved the application's architecture.
Optimized application performance, ensuring high operational speed and reliability.
Improved the user interface (UI) to meet Shopify standards, providing an intuitive and efficient user
experience.
Addressed customer queries and issues in cooperation with the support team.
Developed and added new functionality in response to individual customer requests and needs.
Successfully implemented a paid subscription system in the application, contributing to the expansion of
functionality and increasing revenue.

Tech stack

React, Redux, Polaris, Koa, MongoDB, Mongoose, Redis, RabbitMQ, Shopify API (Rest/GraphQL), Docker,
Docker Compose

Akcio
Akcio is a Shopify application that allows stores to easily create and conduct auctions. This solution
provides sellers with flexible options to customize the auction widget directly in their stores, ensuring a
unique user experience.

Responsibilities and Achievements

Fully developed both client and server sides of the application, applying modern architectural approaches
and methodologies.
Developed a database structure to ensure high performance and scalability of the application.
Implemented Feature-Sliced Design (FSD) architecture on the client side to simplify maintenance, expand
the project, and ease the integration of new developers.
Created a GraphQL API on the server side, which facilitated the simplification of working with TypeScript
types and reduced query processing time.
Configured and deployed the application in Docker containers using Docker Compose.
Utilized WebSocket for instant updates of information to all users, ensuring data relevance in real-time.
Applied Node.js Worker Threads to distribute server load and enhance performance.
Mentored and trained new project developers, ensuring their rapid integration into the work.

Tech stack

TypeScript, React, Redux Toolkit, Polaris, Koa, PostgreSQL, Prisma, GraphQL (Apollo Server), Shopify API
(GraphQL), Docker, Docker Compose
 iMobile
iMobile is an application designed to create customizable mobile apps (iOS, Android) for stores on the
Shopify platform. It provides users with flexible tools for customizing their store's theme, adding and
customizing various sections and blocks, and then allows them to create and publish a mobile application in
the App Store or Google Play.

Responsibilities and Achievements

Developed applications using React Native for previewing created mobile applications.
Created an intuitive builder with flexible block configuration and a mobile app preview feature.
Refactored the existing codebase.
Configured tools to enhance code quality, ensuring a high standard of development and maintenance.
Optimized the application build process to speed up its launch and improve performance.

Tech stack

TypeScript, React, React Native, Redux Toolkit, Polaris, Koa, PostgreSQL, Sequelize, Shopify API
(Rest/GraphQL), Docker, Docker Compose