Freelancers for hire in Czech Republic
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Hire devetar
Seasoned Java/Full-Stack Developer with 14 years of experience, specializing in diverse industries such as hospitality, air and water quality monitoring, sports betting, casinos, fintech, and medicine. My expertise spans multiple technologies including Java, Kotlin, Go, JavaScript, TypeScript, Spring Boot,...Seasoned Java/Full-Stack Developer with 14 years of experience, specializing in diverse industries such as hospitality, air and water quality monitoring, sports betting, casinos, fintech, and medicine. My expertise spans multiple technologies including Java, Kotlin, Go, JavaScript, TypeScript, Spring Boot, PostgreSQL, MySQL, MongoDB, Node.js, Express.js, Nest.js, Next.js, React, Angular, and Vue. I hold a Master's degree in Computer Science. Throughout my career, I have provided the following services: ?️ Backend Development ? Frontend Development ?️ Web Development ?️ System Architecture ? Database Design & Modeling ? API Development & Integration ? IoT Backend Development ? AI Development & Integration ? Blockchain, DeFi, DApp, NFT ☁️ Cloud Engineering I have collaborated with global banking institutions, game development companies, startups, and several Fortune 500 clients across various sectors: ? Health Care ? Air and Water Quality Monitoring ? Sports Betting ? Casinos ? Fintech & Banking ? Medicine ? Hospitality I specialize in building secure and scalable blockchain solutions using Solidity, Ethereum, Polygon, Binance Smart Chain, and other EVM-compatible chains. I’ve delivered projects in DeFi, NFT marketplaces, DAOs, staking platforms, token development (ERC20, ERC721, ERC1155), and crypto payment gateways. I have deep knowledge of tokenomics, gas optimization, contract auditing, and full-stack dApps using React, Next.js, Node.js, and Web3.js/Ethers.js. I ensure all contracts are secure, upgradeable, and fully tested using tools like Hardhat, Truffle, and Foundry. I follow best practices in smart contract development with CI/CD, Git, and test-driven workflows. Whether you need a fully-featured dApp, NFT minting engine, DeFi protocol, or blockchain integration into existing systems, I’m here to deliver high-quality, production-ready code. As a Spring Boot expert, I have developed numerous robust backend systems, showcasing my ability to integrate complex server functionalities seamlessly. Here’s a snapshot of the tech stacks I've mastered: - Languages: Java, JavaScript, TypeScript - Frameworks: Spring Boot, React, Vue.js, Angular - Blockchain Development: Ethereum, Solana, Smart Contracts, Solidity, Rust, MemeCoins, Trading Strategies - Web Development: - Frontend: HTML5, CSS3, React, Vue, Angular - Backend: Spring Boot, Node.js, Express.js - Database Management: MySQL, PostgreSQL, MongoDB - DevOps and Collaboration Tools: Git, Docker, Jenkins, AWS, Azure - Software Testing: JUnit, Mockito, Selenium, Jest - Additional Skills: RESTful APIs, microservices architecture, Agile methodologies, DevOps practices My career is a testament to my dedication to continuous learning and embracing new challenges. I am enthusiastic about further enhancing my technical skills and am always prepared for the next technological advancements in the software development industry. less -
Hire romanpotapcz
romanpotapcz romanpotapcz
$25 USD / hour
Senior Dev: Mobile, Web, Full-Stack, IoT, 3DCzech RepublicI am a Senior Mobile & Full-Stack Developer with 9+ years of experience building high-performance mobile apps, AI-powered platforms, scalable web systems, and e-commerce solutions. I help startups, entrepreneurs, and businesses turn ideas into real products that drive engagement, efficiency, and sales. Over the past 4...I am a Senior Mobile & Full-Stack Developer with 9+ years of experience building high-performance mobile apps, AI-powered platforms, scalable web systems, and e-commerce solutions. I help startups, entrepreneurs, and businesses turn ideas into real products that drive engagement, efficiency, and sales. Over the past 4 years, I have expanded into automation, electronics, IoT systems, 3D modeling, and retail/store design, enabling me to deliver complete end-to-end solutions—from mobile apps and AI systems to online stores, connected devices, and immersive 3D store visualizations. Experienced full-stack web developer skilled in PHP, JavaScript, Python, C#/Java, WordPress, and modern frameworks. I deliver responsive, high-performance websites, custom plugins, and e-commerce solutions tailored for usability, scalability, and client success. I focus on secure, scalable, and user-centered solutions that support long-term business growth. Mobile Development: Swift, Kotlin, Java, Flutter, React Native, Xamarin, Unity 3D. Native & cross-platform iOS/Android apps with real-time features, push notifications, secure authentication, payment gateways, API integration, optimized for performance and UX. Web & Online Presence: HTML5, CSS3, JavaScript, PHP, Node.js, Python; Laravel, CodeIgniter, Express.js, Django. Professional, SEO-optimized websites, corporate & portfolio platforms, REST APIs, cloud deployment, scalable backend systems. E-Commerce & Store Networks: WordPress, WooCommerce, Shopify, Custom PHP. Multi-store platforms, product catalog management, secure checkout, payment integration, analytics dashboards, optimized for sales and performance. AI & Intelligent Systems: Python, TensorFlow, PyTorch, OpenCV, Scikit-learn. Generative AI, NLP, image recognition, OCR, smart automation. Automation, Electronics & IoT: C, C++, Arduino, ESP32, Raspberry Pi, MQTT. Smart devices, sensor integration, microcontroller programming, hardware-software connectivity. 3D Modeling & Store Design: Blender, 3ds Max, Rhino3D, Unity 3D, Fusion 360. 3D product visualization, AR/VR, interactive simulations, retail store layout. Let’s create innovative solutions that help your business grow. less -
Hire MarkitaM
☀ QA Software Testing (9 years experience) - Manual testing of web & mobile applications - Regression, cross-browser, exploratory, black-box & end-to-end testing - Clear, structured, and actionable bug reporting - Strong focus on usability, logic, and product quality ☀ AI Voice Agent Testing (CZ/EN) - Testing...☀ QA Software Testing (9 years experience) - Manual testing of web & mobile applications - Regression, cross-browser, exploratory, black-box & end-to-end testing - Clear, structured, and actionable bug reporting - Strong focus on usability, logic, and product quality ☀ AI Voice Agent Testing (CZ/EN) - Testing conversational AI using persona-based scenarios - Evaluation of chatbot, voice assistants, and generative AI systems - Analysis of ASR / NLU / TTS performance - Structured feedback and detailed issue reporting ☀ Virtual Assistant & Administrative Support All my services can be delivered as part of virtual assistant support, including: - General administrative tasks - Data handling and content organization - Email outreach & email communication support - Task coordination and basic project support - All you can see in my profile :) ☀ Creative & Language Services - Graphic design (Adobe Photoshop, Adobe Illustrator) - UGC content creation (video) - Audio & video recording in Czech language - English → Czech translation - Czech proofreading and language refinement - Native Czech speaker communication support Top Strengths - Attention to detail - Responsibility and reliability - Strong communication - Fast learning and adaptability - Problem-solving mindset Interests - Travel, photography, nature, and animals less -
Hire magdalenas22
magdalenas22 magdalenas22
$30 USD / hour
AI Full Stack Developer | WordPress | ShopifyCzech RepublicFrontend and AI systems-focused developer with experience building scalable web applications, SaaS platforms, and automation-driven systems. I specialize in designing and developing modern, responsive interfaces using React/Next.js, combined with backend integrations that support real production workflows. My work...Frontend and AI systems-focused developer with experience building scalable web applications, SaaS platforms, and automation-driven systems. I specialize in designing and developing modern, responsive interfaces using React/Next.js, combined with backend integrations that support real production workflows. My work goes beyond UI — I focus on system behavior, data flow, and performance in real-world applications. I have experience working on multi-tenant SaaS architecture (DFX5.com) on AWS, where I contributed to building an AI-powered chatbot system capable of generating applications through conversational flow, along with integrations for Slack, GitHub, and GitLab. My technical background includes: * Next.js / TypeScript frontend development * Python FastAPI backend systems * AWS Lambda, API Gateway, Cognito, DynamoDB * AI integration using OpenAI APIs * Workflow automation and system integrations I focus on building clean, scalable, and maintainable systems where AI, automation, and UI work together seamlessly. I prefer working on complex products where architecture, AI integration, and user experience all matter equally, and I bring a strong problem-solving mindset to production systems rather than static websites. less -
Hire nekokate
Business Intelligence, Database Administration, Database Development, Database Programming, Dynamic 365Database programming, SQL, Microsoft Office, Word, Excel, Business Intelligence, Data, Oracle, SQL Server,...Database programming, SQL, Microsoft Office, Word, Excel, Business Intelligence, Data, Oracle, SQL Server,... less -
Hire kozzena
Software developer, Unity 3D programming, Kinect sensor detection, motion detection. We realized museum installation, school, shopping malls, events, exhibitions... For more than 10 years of experience, we developed: 1. Interactive floor with lots of games such as soccer game, hockey, teaching lessons for children...Software developer, Unity 3D programming, Kinect sensor detection, motion detection. We realized museum installation, school, shopping malls, events, exhibitions... For more than 10 years of experience, we developed: 1. Interactive floor with lots of games such as soccer game, hockey, teaching lessons for children and adults, museum games, shopping mall advertisement etc. 2. Photo booth with photo printing in virtual graffiti. Camera detection of special spray. 3. Human joystick for big events, camera and sound detection from multiple cameras. 4. Virtual clothing for museums, events and shopping malls. Kinect application and 3D costumes modelling. 5. Augmented reality T-rex, polar bear, snow storm, raptors etc. 6. Interactive boulder wall with pong game 7. Spotligh interactive software detection of light that follows you. 8. Touch screen application, interactive tables, jukebox etc. Please fell free to contact me. We can help you with motion detection, AR, touch screen project. less -
Hire antonbarba
Linux / Windows System Administrator Network (/Network Security) Administrator - experience in administering remote servers (Linux | Windows server 2003 | 2008 | 2016 | 2019 | 2022) - hypervisors (proxmox, virtualbox + php, hyper-v, VMware, ESX, XenServer) - installation, configuration of VoIP (FreePBX, Elastix,...Linux / Windows System Administrator Network (/Network Security) Administrator - experience in administering remote servers (Linux | Windows server 2003 | 2008 | 2016 | 2019 | 2022) - hypervisors (proxmox, virtualbox + php, hyper-v, VMware, ESX, XenServer) - installation, configuration of VoIP (FreePBX, Elastix, etc.) - installation and configuration OpenWRT, RouterOS (Mikrotik), Fortigate (Fortinet), pfsense, opnsense - installation and configuration zabbix, grafana, ELK - installation and configuration OpenVPN, Sftp, Wireguard, IPSec tunneling - installation of video surveillance less -
Hire paulaprieto28
Hello! My name is Paula. I enjoy helping things run smoothly. I like organizing, solving problems, and supporting people so they can focus on what really matters in their business. I have experience in customer service, organization, task coordination, and content creation. I am currently continuing to develop my...Hello! My name is Paula. I enjoy helping things run smoothly. I like organizing, solving problems, and supporting people so they can focus on what really matters in their business. I have experience in customer service, organization, task coordination, and content creation. I am currently continuing to develop my skills in Virtual Assistance and digital tools to provide better support to entrepreneurs and small businesses. I am a creative, organized, and reliable person who enjoys learning, taking on new challenges, and continuously growing. I pay close attention to details, communicate clearly, and always strive to deliver high-quality work. Some of the tools I work with include Canva, ChatGPT, Google Workspace, CapCut, Notion, Instagram, and LinkedIn. If you are looking for someone who is committed, easy to work with, and genuinely interested in helping your business become more organized and efficient, I would be happy to support you. I look forward to the opportunity to work with you! less
