Kostiantyn

Khymera Kostiantyn
Full-stack Developer
As a dedicated Full-stack developer with over 4 years of experience, I
specialise in using React with Next.js for front-end development and
Node.js for back-end tasks, often integrating with databases. I also have
a background in AI integrations, which enhances the functionality and
user experience of my applications. My focus is on delivering robust
solutions while thriving in collaborative environments. I am eager to
continually enhance my skills through challenges and strive to produce
Contacts impactful results on meaningful projects.

Telegram
@Kkhymera Latest Work Experience
Linkedin
July 2024 - Present Tree Solutions
Email Full Stack Developer
[відкрити контакти](див. вище в блоці «контактна інформація») Technologies: React, Next.js, Tailwind CSS, Node.js, NestJS,
PostgreSQL, Prisma, Payload CMS, ShadCN,T3 Stack,OpenAI APIs.
GitHub
Worked on a platform connecting electric vehicle (EV) owners and
Location local businesses, allowing users to receive discounts on nearby
Warsaw, Poland services while their cars are charging. Developed core backend
functionality using NestJS and PostgreSQL, and contributed to the
Tech skills front-end using React
and Tailwind CSS.
HTML5/CSS3(Tailwind,
styled-components, SCSS) Contributed to the development of a medical communication and
Responsive/Adaptive design publication platform tailored for healthcare professionals.
GIT Implemented front-end interfaces using Next.js and ShadCN UI,
JavaScript managed content and data structures through Payload CMS, and
React, Next.js integrated OpenAI APIs to enhance content generation and
TypeScript provide AI-assisted research summaries.
Redux Collaborated closely with cross-functional teams to deliver user-
REST API
centric features and maintain code quality across multiple projects
Webpack
using modern development practices and technologies.
Node.js (Express,Nest.js)
NoSQL, SQL DB, Docker
AI(Open AI, NLP)
Tests (Jest, react-testing- Dec 2023 - June 2024 KPI
library) Creatives
Full Stack Developer
Soft skills Technologies: React, Next.js, Node.js, SCSS, Mongo DB, Jest.
The project is a startup in the digital content domain.
Attention to detail
Developed application from scratch (React), it's a subscription-
Teamwork
based
Creativity
Good communication video editing service. What was developed:
Stress resistance - The user authentication and account
- Interface for working with projects (stepper where the client
describes all the features for working with video), also project
Language editing and comments
- Custom file uploader(for large videos ) integrated with frame.io
English - Fluent written in node.js,
Ukrainian - Native - Payment integration with Stripe
Polish - Beginner
 Mar 2022 - Apr 2023 Affnotech
Lviv
Frontend Developer
Technologies: React, SCSS, Webpack, Styled-components, Framer
Motion. At Affnotech Lviv, under the mentorship of a seasoned full-
stack developer. I contributed to several significant tasks in e-commerce
projects including:
E-commerce project:
- Dynamic Product Lists: Implemented dynamic product lists
featuring multiple options and variants
- Cart, Checkout, and Billing: Developed and optimized cart
functionalities, checkout processes, and billing services
- API Communication Service: Created a separate service for
seamless communication between React.js and APIs, based on Object-
Oriented Programming (OOP) principles and written in JavaScript
Developed other smaller projects from scratch such as corporate
sites or landings.
Updated functionality & design in many different projects.

June 2021 - Mar 2022
EPAM Frontend Developer
Here is my personal website with my projects .

Education
IT School GoIT Yuriy Fedkovych Chernivtsi National
2022 - 2023 (Fullstack Developer) University
2015 - 2020 (Law, Master Degree)

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recruitment process in accordance with the Personal Data Protection Act of 10 May 2018 (Journal of
Laws 2018, item 1000) and the Regulation (EU) 2016/679 of the European Parliament and of the Council
of 27 April 2016 (General Data Protection Regulation).