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Denys S. Frontend, React and Mobile Platforms

My name is Denys S. and I have over 2 years of experience in the tech industry. I specialize in the following technologies: React, HTML5, CSS 3, SCSS, JavaScript, etc.. I hold a degree in , . Some of the notable projects I’ve worked on include: Responsive Landing Page, Front end Developer, Front End Developer, Front end Developer, Front End Developer, etc.. I am based in Warsaw, Poland. I've successfully completed 13 projects while developing at Softaims.

I am a business-driven professional; my technical decisions are consistently guided by the principle of maximizing business value and achieving measurable ROI for the client. I view technical expertise as a tool for creating competitive advantages and solving commercial problems, not just as a technical exercise.

I actively participate in defining key performance indicators (KPIs) and ensuring that the features I build directly contribute to improving those metrics. My commitment to Softaims is to deliver solutions that are not only technically excellent but also strategically impactful.

I maintain a strong focus on the end-goal: delivering a product that solves a genuine market need. I am committed to a development cycle that is fast, focused, and aligned with the ultimate success of the client's business.

Main technologies

  • Frontend, React and Mobile Platforms

    2 years

  • React

    1 Year

  • HTML5

    1 Year

  • CSS 3

    1 Year

Additional skills

Direct hire

Potentially possible

Previous Company

Netguru

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Experience Highlights

Responsive Landing Page | React + SCSS + Smooth Scroll

Goal: Build a modern landing page with smooth animations, responsive layout, and a custom navigation system. Solution: Implemented the page using React components and SCSS modules with smooth scroll navigation. Added a sticky header, mobile burger menu with overlay, and a scroll-to-top button. Integrated AOS for section animations. Fixed issues with menu behavior: disabled body scroll when open, correct cursor states, and automatic close when clicking outside menu links. Impact: The landing page is fully responsive (desktop and mobile), loads fast

Front end Developer | Store Dashboard | React | Tailwind | API

Developed as a Front End Developer, Store Dashboard is a fully responsive web application for visualizing e-commerce analytics. It provides insights into visitors, sales, turnover, product performance, reviews, and user behavior. Key features include dynamic Recharts graphs, an interactive orders table with mock data, period toggling (year, month, week), CSV export, product favoriting, and shopping cart logic. Built using React, TypeScript, Vite, Tailwind CSS, and Zustand for scalable state management. Designed with clean UI, fast load times, and mobile-first principles.

Front End Developer | Timer App – Stopwatch & Countdown

Built a responsive Timer app (Stopwatch + Countdown) as a Front End Developer using React. Features a unified circular dial (hours/minutes/seconds) with drag-to-set and animated live progress, fully optimized for mobile via Pointer Capture and touch-action:none. Includes start/pause/reset, manual input, audio alarm, lap saving with rename/clear (locked during active run), and accessible ARIA attributes. State managed with React Hooks and requestAnimationFrame; persistent data via localStorage. Styled with modular SCSS, structured imports/exports. Unit-tested using Vitest and React Testing

Front end Developer | Weather App

Developed as a Front-End Developer, this responsive Weather Application fetches real-time data from the OpenWeather API. It includes a detailed current weather view, hourly forecast strip, and a 7-day outlook with metrics like temperature, humidity, pressure, wind speed, visibility, and precipitation. Dynamic icons and backgrounds adapt based on time of day and weather conditions. Built with React, TypeScript, Vite, TailwindCSS, and shadcn/ui. Optimized for mobile and desktop devices with clean UI, smooth transitions, and accessibility in mind.

Front End Developer | 2048 - Game | React | Tailwind

A modern implementation of the classic 2048 puzzle game, built with React, TypeScript, and TailwindCSS. Developed by a Front-End Developer focused on clean architecture, responsive UI, and performance optimization. The game supports multiple players, persistent local saves, keyboard and touch controls, smooth tile animations, theme switching (light/dark), and a built-in debug mode for testing and visualizing the game state. Designed with a mobile-first approach and optimized for cross-browser compatibility, the app reflects best practices in modern web development including reusable components

Education

  • Hillel IT Scool

    in Front End Developer

    2018-01-01-2018-01-01

  • FoxmindEd

    in Front End Developer

    2024-01-01-2025-01-01

Languages

  • English
  • Polish
  • Ukrainian

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