Freelance Backend Engineers in Prague

Freelance Backend Engineers in PragueFreelance Backend Engineers in Prague

Projects People

Medard Konopík

Prague, Czechia

Designer, front-end developer, Webflow expert

New to Contra

Designer, front-end developer, Webflow expert

Cover image for Introducing ClearCutout 🚀 ClearCutout is an AI-powered back...

Introducing ClearCutout 🚀 ClearCutout is an AI-powered background removal tool delivering 90% accuracy with 4K+ resolution exports. Features dual processing modes for speed or precision, batch processing capabilities for up to 50 images simultaneously, and secure 30-day file storage. Built with a modern Next.js frontend and advanced machine learning models to handle complex image compositions including hair details, transparent objects, and intricate edges. The platform supports multiple export formats and provides real-time processing feedback with detailed analytics. I am the sole creator, developer, designer, and founder of this project. https://clearcutout.com

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Cover image for Introducing Klaron 🚀 Klaron is a Czech browser extension th...

Introducing Klaron 🚀 Klaron is a Czech browser extension that eliminates the friction of "tab-switching" between your work and AI. It brings AI directly into any text field on the web - Gmail, LinkedIn, Jira, or Slack. With a single click, users can instantly: Refine Tone: Switch between professional and casual styles. Smart Toggling: Seamlessly change "tykání/vykání" (informal/formal). Summarize & Translate: Condense or translate text without leaving the page. Edit & Expand: Improve grammar or adjust length on the fly. Klaron offers premium AI power optimized for the Czech language at a fraction of the cost of global tools. Visit: klaron.cz (http://klaron.cz) I am the sole creator, developer, designer, and founder of this project.

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Cover image for Introducing Dokubot, an advanced AI detection tool that iden...

Introducing Dokubot, an advanced AI detection tool that identifies AI-generated content with comprehensive writing quality metrics and analysis. Features sophisticated probability scoring, specialized Czech language readability analysis, detailed text statistics including word frequency and sentence complexity patterns. Built with Python/Flask backend and multi-dimensional text analysis algorithms that provide visual representations of writing patterns. The platform helps educators verify student submissions, professionals ensure content authenticity, and writers analyze their work with precision metrics tailored for Czech language characteristics. I am the sole creator, developer, designer, and founder of this project. https://dokubot.cz/

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Cover image for Say hello to Frama, a free cross-platform desktop applicatio...

Say hello to Frama, a free cross-platform desktop application built with Electron that simplifies the complex world of transparent web video. Designed for developers and designers, Frama converts heavy MOV/MP4 files into web-ready WebM (VP9) and HEVC formats with alpha channels. At its core, the app leverages a custom FFmpeg implementation to handle high-fidelity video processing while maintaining a lightweight footprint. Beyond conversion, it features an automated HTML embed code generator and a built-in browser previewer. I also designed and launched the product’s landing page via Webflow to ensure a premium user experience. Frama has quickly gained popularity within the dev community for its "pay-what-you-want" model and zero-barrier UI.

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Backend Engineer(3)

Prague, Czechia

Python & AWS: Building Scalable Systems

Python & AWS: Building Scalable Systems

Cover image for Finance App to track expenses using AI

Finance App to track expenses using AI

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13

Cover image for Creating E-Commerce Platform

Creating E-Commerce Platform

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8

Cover image for Stripe Integration

Stripe Integration

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Backend Engineer(3)

Prague, Czechia

I developed my app and now help others develop theirs.

5.0: Rating

2: Followers

I developed my app and now help others develop theirs.

Cover image for Rented - The app for Renting Anything

Rented - The app for Renting Anything

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4

Cover image for Food diary app.

Food diary app.

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5

Cover image for Admin panel for company HR

Admin panel for company HR

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2

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Backend Engineer(1)

Viacheslav Ivannikov

Prague, Czechia

Experienced Backend & AI Developer 🧠

Experienced Backend & AI Developer 🧠

Cover image for Upwork research

Upwork research

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Cover image for Scalable Diffusion Models with Transformers (DiT)

Scalable Diffusion Models with Transformers (DiT)

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Cover image for Optimization of stable diffusion

Optimization of stable diffusion

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12

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Backend Engineer(2)

Andrii Bondarenko

Prague, Czechia

Senior Full-Stack Engineer | Cloud-Native React & Node.js

6: Followers

Senior Full-Stack Engineer | Cloud-Native React & Node.js

Cover image for VoIP Solution | Node.js Developer | Back-end Developer | DevOps

VoIP Solution | Node.js Developer | Back-end Developer | DevOps

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3

Cover image for Unit test example | Node.js Developer | Back-end Developer

Unit test example | Node.js Developer | Back-end Developer

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3

Cover image for Custom CRM | Node.js | React | AWS | Full Stack Developer

Custom CRM | Node.js | React | AWS | Full Stack Developer

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Cover image for Docker | GCP | React | Node.js | Cloud Architect | DevOps

Docker | GCP | React | Node.js | Cloud Architect | DevOps

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Backend Engineer(3)