Dmytro Kononenko
Private message
Offer work
Borispol,
Ukraine
available for hire
Rating
CV
Hello! I am Dmytro, a Fullstack Developer focused on building reliable and high-performing web applications. I combine strong Frontend skills (React ecosystem) with solid Backend knowledge (Node.js, SQL) to deliver complete, "turnkey" projects.
Currently pursuing a degree in Cybersecurity, so I prioritize data protection, secure authentication, and stability in every solution I build.
🚀 What I can do for you:
Frontend Development: Building interactive interfaces using React.js and Next.js. Creating pixel-perfect, mobile-first layouts.
Backend Engineering: Developing RESTful APIs, configuring servers (Node.js/Express), and managing databases (MySQL, PostgreSQL).
E-commerce Solutions: Integrating payment gateways (e.g., Vivo), shopping carts, user dashboards, and secure JWT authentication.
🛠 Technical Stack:
JS Stack: React, Redux (Toolkit), Next.js, Node.js, Express.
Data: MySQL, SQL, MongoDB.
Tools: Git, Docker, Postman, Webpack/Vite.
My Approach:I am result-oriented with experience in both freelance projects and corporate environments (Aromatika). I guarantee transparent communication, adherence to deadlines, and clean, maintainable code.
Languages: English (B2), Polish (B1), Ukrainian (Native).
Let's discuss your project and bring your ideas to life!
Skills and abilities
Portfolio
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203 USD TMN Academy: High-Conversion Crypto Course Landing Page
Website Development
The Challenge: To create a launch website for a cryptocurrency trading course. The site needed to resonate with the tech-savvy audience, build trust through social proof, and drive registrations.
The Solution: I designed and developed a sleek, responsive interface using a "Dark Theme" aesthetic, popular in the fintech and crypto sectors.
… Key Features:
Visual Style: High-contrast design with neon green accents to guide user attention to Call-to-Action (CTA) buttons.
Social Proof: A dedicated section displaying the author's social media reach (YouTube/Telegram stats) to establish authority.
Information Architecture: Structured content flow (About -> Benefits -> Pricing) designed to maximize lead generation.
Responsiveness: Fully adapted for mobile devices, as most traffic comes from social media apps.
Tech Stack: React.js, SCSS, HTML5, Responsive Design.
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116 USD Britannia: Educational Website for an English Language School
HTML & CSS
The Challenge: To create a modern web presence for an English language school. The main goal was to build trust with potential students, present the courses clearly, and drive sign-ups for trial lessons.
The Solution: I designed and developed a minimalist interface that prioritizes content and readability.
… Hero Section: Engaging first screen with a strong Call-to-Action ("Trial Lesson") to maximize lead generation.
User Flow: Intuitive navigation structure allowing users to easily access course details and contact info.
Visual Identity: Clean design using the brand's color palette (Red/White/Black) to maintain corporate identity.
Desktop First: The layout is specifically optimized for desktop usage, ensuring the best experience for students learning via PC/Laptop.
Tech Stack: HTML5, SCSS, JavaScript (ES6+).
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1743 USD Aromatika E-commerce Platform: Fullstack (Node.js + React) | Pay
Website Development
The Challenge: To build a scalable multi-page store for the Polish market. Beyond sales features, the client prioritized customer data security and a flexible marketing toolset.
Backend & Security Engineering: Leveraging my background in Cybersecurity, I implemented enterprise-grade protection:
…
Database Architecture: Designed and deployed a custom relational database (MySQL) optimized for high-performance queries.
Security & Auth: Built a secure Registration/Login flow using password hashing (bcrypt) and JWT (JSON Web Tokens) for session management. Ensures full protection of sensitive user data.
Promo Code System: Developed server-side logic for discount codes (validation, expiration handling, calculation).
Key Features:
Integrations: Viva Wallet payment gateway & InPost delivery map (Geowidget).
Frontend: Responsive React SPA with Redux state management.
Tech Stack: Node.js, Express, MySQL, React, Redux, JWT, Bcrypt, REST API.
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291 USD E-commerce SPA for Clothing Brand Indoor | React + Redux
Website Development
The Challenge: The client required a modern and lightweight online store for the "Indoor" clothing brand. The main requirement was to avoid heavy CMS platforms in favor of high performance (SPA) and seamless usability on mobile devices.
The Solution: I developed a Single Page Application using React.js, ensuring instant interface response without page reloads.
… Key Features Implemented:
Dynamic Catalog: User-friendly product browsing with quick selection of sizes and colors.
Smart Cart (Redux): Instant adding of items, quantity updates, and total price calculation. Cart state is persistent (saved even if the user closes the tab).
Checkout: Integrated form with data validation for order collection.
UI/UX: Mobile-First design that looks perfect on both smartphones and large screens.
Tech Stack: React, Redux Toolkit, React Router, SCSS, REST API.
Activity
| Latest proposals 10 | Budget | Added | Deadlines | Proposal | |
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AI Agent development
600 USD
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Connect the database to the front-end React.js
45 USD
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Create a real estate agency website
384 USD
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It is necessary to create and connect a Stripe payment link to the website.
82 USD
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Looking for a web developer with Node, Python Experience.
1200 USD
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Writing an AI bot
250 USD
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Turnkey website creation
1355 USD
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One-page service website
452 USD
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Connect chat GPT to the website
349 USD
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Create a Telegram bot for the establishment
452 USD
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