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  1. Freelancers

Denis Harkovsky

Offer Denis work on your next project.

Ukraine Kharkiv, Ukraine
2 months 5 days back
Available for hire available for hire
age 22 years
on the service 2 years
Freelancer Denis H. — Ukraine, Kharkiv. Core skill — Bot Development, Web Programming

Rating

Successful projects
No data
Average rating
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Rating
187
Bot Development
717 place out of 1905
Web Programming 2
2971 place out of 6430

Language proficiency level

Українська Українська: upper-intermediate

Skills and abilities

Programming

Design & art

Services


Photo, Audio & Video

Promotion

Administration


Translation

Writing

Portfolio


  • 226 USD

    Example of work

    HTML & CSS
    Example of work — example of freelancer's portfolio work in category HTML & CSS
    Development of a modern adaptive website / web platform turnkey

    I specialize in developing modern web projects with a focus on performance, architecture, and user experience.

    … I create fully interactive web solutions that look expensive, work quickly, and scale according to business needs.

    What I implement:
    • Adaptive websites and web applications (Mobile / Desktop)
    • Advanced UI/UX with animations and smooth transitions
    • Interactive interfaces with deep logic
    • Telegram bots + Mini Apps with web integration
    • WebSocket systems (real-time: chats, notifications)
    • API integrations (payments, maps, third-party services)

    The technical level of the project includes:
    • Clean project architecture (separation of logic, components)
    • Load optimization (lazy loading, resource minimization)
    • High speed (Lighthouse 90+ with proper build)
    • Custom interface logic (not templates, but manual implementation)
    • Working with UI states (menus, modal windows, interactive)
    • Cross-browser compatibility and stability on all devices

    Using:
    • HTML5 / CSS3 / JavaScript (ES6+)
    • React / Next.js (if needed)
    • WebSockets / REST API
    • Vercel / Docker / GitHub

    The feature of my work is to think through the entire user journey, visuals, speed, and scalability of the project.

    Suitable for:
    — startups
    — businesses
    — gaming and social projects
    — Telegram ecosystems

    Ready to implement the project turnkey: from idea to launch and support.

  • Page design - websites, content creation

    Web Design
    Page design - websites, content creation — example of freelancer's portfolio work in category Web Design
    I design any pages and websites, adapting to the categories of pages - websites

    https://hrdk.company.site/

    … https://www.instagram.com/let.s_brunch/

  • Management of radio stations - connection of servers

    Web Programming
    Management of radio stations - connection of servers — example of freelancer's portfolio work in category Web Programming
    Creating a radio station - design, live broadcasting - connecting to the stream.

  • HRDK Project

    Javascript and Typescript
    HRDK Project — example of freelancer's portfolio work in category Javascript and Typescript
    Game currency store and bot project work

    The site is written in js, html, css

Activity

  Latest proposals 7
Telegram Mini App
580 USD
Edit the ready VPN bot
116 USD
Good afternoon, launch, rewrite, and integrate the ready-made bot with the use of
113 USD
Assistant for filling out Excel tables (information search, copy-paste, dropdown menus)
23 USD
It is necessary to implement a Telegram bot for a restaurant
32 USD
Price list excel word
34 USD
Set up lead conversion transfer from Telegram bot (via SendPulse) to Facebook Ads through CAPI
150 USD