Freelance Backend Engineers in PragueFreelance Backend Engineers in Prague
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Medard Konopík's avatar
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)
Vlad Morkovnik's avatar
Vlad Morkovnik
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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Cover image for Creating E-Commerce Platform
Creating E-Commerce Platform
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Cover image for Stripe Integration
Stripe Integration
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Backend Engineer(3)
Jan Mestek's avatar
Jan Mestek
Prague, Czechia
I developed my app and now help others develop theirs.
5.0
Rating
3
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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Cover image for Food diary app.
Food diary app.
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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)
Jamie McDonnell's avatar
Jamie McDonnell
Prague, Czechia
I build Vue apps that convert for startups & scale-ups.
New to Contra
I build Vue apps that convert for startups & scale-ups.
Cover image for Cross-platform time tracking for freelancers
Cross-platform time tracking for freelancers · 2026 As a freelancer working across multiple environments, I needed a time tracker that lived inside my actual workflow — IDE, mobile, desktop — without the constant context switch of opening a separate app. Nothing on the market quite solved it. I designed and built the entire product myself: a cross-platform SaaS app with IDE integration, mobile and desktop clients, built on Vue 3/Nuxt with Firebase for the backend and Stripe for payments. Used Claude as an AI thinking partner throughout to rapidly iterate on concept and architecture. A fully deployed SaaS product with real users — built end-to-end from idea to payment integration in a single continuous sprint. A practical demonstration of what AI-augmented product development looks like in practice.
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Cover image for I conceptualised, designed, and built
I conceptualised, designed, and built the entire experience from scratch using Vue 3, Nuxt 3, TypeScript, and TailwindCSS. Created interactive presentational animations and integrated video content to deliver a cinematic, high-impact browsing experience that wows on every scroll.
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Cover image for Working alongside a team of
Working alongside a team of experienced front and back-end developers, I delivered polished UI components and optimised front-end performance using Vue.js, TailwindCSS, and Figma for design. Integrated complex REST API workflows and focused on performance optimisation across the platform.
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Cover image for White-label marketing engine for US
White-label marketing engine for US law firms · 2025
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Backend Engineer(1)
Viacheslav Ivannikov's avatar
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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Backend Engineer(2)