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MARK
CHEPIZHNYI
FRONTEND DEVELOPER

CONTACT SUMMARY
[open contact info](look above in the "contact info" section) Front-end Developer with a Java-influenced engineering mindset and a solid
command of React, TypeScript, and Node.js. I bring a unique background as a
[open contact info](look above in the "contact info" section)
former Freelance 3D Artist, which refined my ability to manage complex client
Kyiv, Ukraine, remote feedback and maintain visual precision. My technical journey started with Java,
Telegram providing a strong foundation in OOP and system architecture. I notably optimized
LinkedIn an e-commerce platform by implementing a fuzzy search (Fuse.js) and refactoring
GitHub the codebase to absolute aliases for better maintainability.

EDUCATION WORK EXPERIENCE
Frontend Developer FROM NOV 2025
SUMY NATIONAL AGRARIAN
Technologies: JavaScript, React, TypeScript, HTML, CSS, BEM, Node.js,
UNIVERSITY 2017 - 2019 PostgreSQL.
Bachelor’s degree in Food
Technology Built scalable UI components with React & TypeScript, ensuring strict type
safety and modularity.
Engineered a reusable async API client using Generics and managed complex
application states with real-time validation.
SKILLS
Implemented high-fidelity responsive interfaces (BEM/SCSS) and optimized
TypeScript, JavaScript (ES6+), search features using Fuse.js and debouncing.
Improved codebase maintainability by implementing absolute aliases and
Java (Core)
conducting project-wide refactoring.
React, HTML5, CSS3, Sass Participated in Agile ceremonies and code reviews, managing tasks efficiently
through Jira.
(SCSS), BEM, Framer Motion
Node.js, Express, Java Spring 3D Artist / Visualizer (Freelance) FROM DEC 2024

(Boot/Data/Security), SQL, Technologies: Blender, Substance 3D Painter, Marmoset Toolbag, 3DCoat,
ZBrush, Photoshop
PostgreSQL
Fetch, REST API, WebSockets Developed high-quality 3D models and environments for games and
advertising, ensuring optimal geometry and texture mapping.
Git, Webpack, Vite, Fuse.js, Handled full project lifecycles, from initial concept to final delivery, directly
Jira communicating with clients to align on vision.
Managed complex feedback loops and technical constraints, adapting assets
to meet specific engine or rendering requirements.
LANGUAGES Delivered high-fidelity visualizations with a focus on lighting, composition,
and realistic material behavior.
Ukrainian: Native speaker
English: Intermediate Java Developer (Project-based) From 2022
Technologies: Java Core, Spring Boot, Spring Data JPA, SQL, PostgreSQL, Hibernate,
ADDITIONAL Maven/Gradle.

EDUCATION Designed and implemented server-side logic using Spring Boot, focusing on
RESTful API architecture and clean code principles.
Frontend course at Mate Architected relational database schemas and managed data persistence using
academy (Git, HTML, CSS, PostgreSQL and Hibernate/JPA.
JavaScript, Typescript, React, Developed integration layers for external services ( Banking APIs) using
Web) Certificate asynchronous data fetching and efficient DTO mapping.
Managed project configuration and migration flows using Flyway/Liquibase to
Java Developer course at ensure data consistency across development stages.
GoIT (Java, Spring Boot, Applied OOP principles and design patterns to build maintainable and scalable
Hibernate, SQL, PostgreSQL) backend services.
Certificate
 PORTFOLIO

PHONE CATALOG: Built the core Header and Interactive Search functionality, focusing on high
performance and web accessibility.
Stack: React, Node.js, PostgreSQL, Implemented Fuse.js with fuzzy search and debouncing to create a fast,
TypeScript, SCSS. typo-tolerant user experience.
Integrated Framer Motion to provide fluid, real-time visual feedback and
Links:
interactive animations.
Demo Led a project-wide refactoring to absolute aliases, significantly improving
GitHub Frontend code maintainability and team workflow efficiency. Stack: React, TypeScript,
GitHub Backend Node.js, PostgreSQL, SCSS.

TODO APP: Developed a high-performance SPA from scratch with a focus on seamless,
real-time task management.
Stack: React, TypeScript, REST API, Engineered a custom, reusable asynchronous API client using TypeScript
classNames, BEM. Generics to ensure type-safe server communication.
Implemented complex UI patterns, including inline editing with advanced
Links: keyboard navigation (Esc/Blur handling).
Demo Optimized the interface using BEM methodology and integrated a dynamic
GitHub Code loading system for enhanced visual feedback.

SHORT LINK:
Stack: Java 17, Spring Boot 3, Spring Developed a full-stack application from scratch, focusing on secure data
Security, Hibernate, Flyway, H2, management and user authorization.
Thymeleaf, Maven. Implemented a complete security system using Spring Security 3 with
protected routes and BCrypt password encryption.
Integrated Flyway for automatic database migrations and handled data
Links:
persistence with Spring Data JPA.
Demo
Successfully updated the project to Java 17 and Spring Boot 3, fixing
Swagger legacy configuration issues and improving overall stability.
GitHub Code Built a clean, responsive user interface using Thymeleaf and Bootstrap, and
successfully deployed the live version to Render.
⏳ Please wait 40 - 60s for the free Render
instance to spin up.

Notes: Developed a multi-functional web application designed for personal
Stack: Java, Spring Boot, Spring productivity, allowing users to manage daily and weekly plans.
Security, Hibernate, Flyway, H2 Successfully implemented a modular architecture, gradually expanding
Database, Gradle, Thymeleaf. the system from basic text storage to a complex management tool.
Engineered a reliable data layer using Spring Data JPA and Hibernate, with
Links:
Flyway ensuring consistent database schema updates throughout the
Demo
development lifecycle.
GitHub Code
Integrated user-level security (Spring Security) to ensure that notes and
plans are private and accessible only to authorized users.
Test Access:
Created a dynamic and user-friendly interface using Thymeleaf, focusing
Username: user
on efficient server-side rendering and seamless data flow between the
Password: password
backend and UI.
⏳ Please wait 40 - 60s for the free Render
instance to spin up.

ACHIEVEMENTS
Mastered React & TypeScript in "Survival Mode" during the blackout 2025-2026 winter in Kyiv, maintaining 100%
productivity despite power and heating outages
Delivered a one-month project in just one week to meet a client's sudden deadline shift, without compromising on quality