Denys

[відкрити контакти](див. вище в блоці «контактна інформація»)
DENYS [відкрити контакти](див. вище в блоці «контактна інформація»)
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KOROTKORUCHKO Github
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FULL-STACK DEVELOPER
Kyiv, Ukraine
Ready to work remotely

SKILLS SUMMARY
React, React Native, Redux, React Highly skilled Full-Stack Developer with nearly 5 years of experience building
Query, React Router, NextJs, NestJs, scalable web and mobile applications. Strong problem-solving skills, ownership
AdonisJs mindset, and ability to work independently and within cross-functional teams.
Typescript, JavaScript, Jest, Node.js, Focused on performance, clean architecture, and delivering business value
TypeORM, CRM
through technical solutions. Open to new challenges and continuous growth.
HTML5, CSS3, Sass (SCSS), BEM,
Bootstrap, Material UI, PUG,
Tailwindcss, Radix EXPERIENCE
Fetch, REST API, SQL (PostgreSQL,
MySQL) FULL-STACK DEVELOPER — BOTO MAY 2025 – PRESENT
Photoshop, Figma, Adobe XD
Git/Github, VS Code, Chrome Developer Skills: TypeScript | Node.js | NestJS | React | Next.js | React Native | REST API | Payment
Tools (incl. React), NPM, Vite, Docker, Systems | Webhooks | Oracle DB | Tailwind CSS | Amplitude
Postman
Developed and maintained scalable web applications using Next.js, improving
EDUCATION performance and user experience.
Developed and maintained mobile applications using React Native, ensuring
Chernihiv National Technical University
consistent performance across devices.
Bachelor Degree in Mechanical
Integrated analytics tools (e.g., Amplitude) to track user behavior and support data-
engineering and materials processing,
driven feature development.
2012 - 2016
Designed and implemented REST APIs to enable efficient data exchange between
frontend and backend systems, improving application performance by 30%.
Integrated third-party services and APIs, extending application functionality and
improving system interoperability.
Maintained and extended an existing payment processing system, implementing
backend services for transaction handling, API integrations, and payment flow
stability.
FULL-STACK DEVELOPER — DIFFREIGHT MARCH 2024 – MAY 2025

Skills: TypeScript | React | React Query | Next.js | Node.js | NestJS | AdonisJS | PostgreSQL | REST API

Developed a logistics web application using React, delivering interactive UI features that improved user engagement and usability.
Optimized API request handling and data caching using React Query, improving frontend performance and reducing redundant network
calls.
Built and optimized backend services using NestJS and AdonisJS, improving request handling performance and database efficiency.
Implemented new features and enhancements, improving user experience and reducing server load by 20%.
Improved application performance through code optimization and efficient data handling strategies.

FULL-STACK DEVELOPER — GO-TECO MARCH 2022 – FEBRUARY 2024

Skills: TypeScript | Node.js | NestJS | TypeORM | React | PostgreSQL | MySQL | REST API | Jest | Git

Developed and enhanced a CRM system used by internal teams, improving operational efficiency and streamlining business
processes.
Independently developed a performance analytics tool for call operators, improving team efficiency by 30% through data-driven
insights.
Developed the public website for the National Cyber Security Coordinating Center, increasing user engagement by 25%.
Collaborated with business analysts to translate requirements into technical solutions and improve system workflows.
Implemented backend features and integrations, ensuring stable system performance and reliable data processing.