Freelancers for hire in Poland
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Sponsored Freelancers
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I'm extremely experienced in Web & Mobile application development especially, with 5+ years of experience. I got an excellent reputation for resolving problems and improving users' satisfaction. I have extensive knowledge of web frontend, backend, mobile app programming, I find myself suitable for full-time position...I'm extremely experienced in Web & Mobile application development especially, with 5+ years of experience. I got an excellent reputation for resolving problems and improving users' satisfaction. I have extensive knowledge of web frontend, backend, mobile app programming, I find myself suitable for full-time position that offers professional challenges that require interpersonal skills, excellent time management and problem solving skills. - Web development ✔ MERN Stack ✔ Angular 9, ReactJS ✔ NodeJS, Express, sailsjs, loopback ✔ SQL(MySQL, PostgreSQL), NoSQL(MongoDB, CouchDB) ✔ HTML5, CSS3, Sass/Less, Bootstrap ✔ Javascript(ES5/ES6+, Babel), jQuery, DHTMLX, Typescript, D3.js, Socket.IO, Three.js ✔ Test: Jest, Jasmine, Mocha, Karma, Chai ✔ UI/UX, responsive web ✔ Firebase, AWS, GCP ✔ Stripe, Paypal, Yodleeany timezone and available 24*7 on any platform. - Mobile app development ✔ iOS, Android ✔ Swift, Objective-c, Kotlin, Java, React Native, Flutter less
Hire Andrii2224
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I am a professional coder (B.Sc degree in computer programming) and, in the past, a successful Forex trader. I have over 7 years experience in MetaTrader4 advisor development, all kinds of MQL programming, Visual c++, c#, database and software design. I'll be happy to help you out with your project using my skills and...I am a professional coder (B.Sc degree in computer programming) and, in the past, a successful Forex trader. I have over 7 years experience in MetaTrader4 advisor development, all kinds of MQL programming, Visual c++, c#, database and software design. I'll be happy to help you out with your project using my skills and extensive knowledge. I offer unlimited revisions until my client is fully satisfied. less
Hire pitpiter
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I am professional developer with over 14 years of experience in web scraping. I have been doing business on (Ukraine freelance website) where I am one of the top developers, and I have very extensive experience in PHP, web scraping, import/export in databases of all CMS. More than 1500 projects, 700+ reviews, 15...I am professional developer with over 14 years of experience in web scraping. I have been doing business on (Ukraine freelance website) where I am one of the top developers, and I have very extensive experience in PHP, web scraping, import/export in databases of all CMS. More than 1500 projects, 700+ reviews, 15 years expiriense. Typical jobs: 1. Supplier product catalog synchronization: Automatic launch (Cron) Adding new products Updating availability and prices Markup (percentage, formula, depending on category/brand/price range) API, XML, WSDL, Json, parsing any websites Import to Shopify, Wordpress+Woocomerce, Opencart, Prestashop, Bitrix, Webasyst, Joomla+Virtuemart/Joomshopping, Drupal, Magento, Netcat, CS Cart, DLE, ModX, Vamshop and other CMS Possible export to CSV, XLS, XLSX, API, XML, SQL. HTML log with display of all actions of the last script launch If you have suppliers who provide information in any structured format and you need to synchronize your product catalog with your website, automatically update prices and product availability. 2. Export of your products to marketplaces: Ebay, Amazon, Wildberries, YandexMarket CSV, XLS, XLSX, API, XML If you sell your products on third-party websites and you need automatic synchronization of availability and prices. 3. Parsing bookmakers' websites with email/telegram notifications 1xbet, 1xstavka, marathonet, fonbet, betcity, betfair, betsapi, pinnacle Line, live, line closure, new events in the line 4. Collection and processing of any type of information through the internet with saving in any structured format. 5. Monitoring of data (prices, announcements, available slots, updates/new information) with instant notification. For more detailed information, please see the portfolio. less
Hire hiberokpars
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I am an experienced front-end and back-end developer. Advanced mechanisms development is my passion, i love to take on difficult challenges, and i carry out every implementation so as to be 100% proud of it.I am an experienced front-end and back-end developer. Advanced mechanisms development is my passion, i love to take on difficult challenges, and i carry out every implementation so as to be 100% proud of it. less
Hire krzysztofpacz
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I specialize in creating mobile-responsive emails, and templates that are Dark Mode ready for various platforms such as MailChimp, Salesforce, HubSpot, Campaign Monitor, Constant Contact, SendGrid, iContact, Pardot, Klaviyo, and many others. In September 2015, I was acknowledged by MailChimp for discovering bugs in...I specialize in creating mobile-responsive emails, and templates that are Dark Mode ready for various platforms such as MailChimp, Salesforce, HubSpot, Campaign Monitor, Constant Contact, SendGrid, iContact, Pardot, Klaviyo, and many others. In September 2015, I was acknowledged by MailChimp for discovering bugs in their new 2015 templates, which helped the company rectify these issues. I am a certified MailChimp Partner Program member, and MailChimp incorporates my HTML/CSS code that correctly renders in Outlook for client emails. My Upwork stats: ★ Over 1,700 highly satisfied clients ★ Total earned: Over $600,000 ★ Total jobs: 4,000 ★ Total hours worked: 14,000 ★ Member of 31 Upwork Talent Cloud Groups (Microsoft, J&J, Unilever, Netflix, etc.). ★ 14+ years of experience in designing and coding email templates. CERTIFICATES: ★ HubSpot Marketing Software Certification (Provider: Hubspot) ★ Hubspot Contextual Marketing Certification (Provider: Hubspot) ★ Hubspot Email Marketing Certification (Provider: Hubspot) ★ Python Certified (Provider: Alison) ★ Mailchimp Certified (Provider: Mailchimp) ★ "Salesforce for Admins" Certificate (Provider: Linkedin) ★ "Managing DNS Essential Training" Certificate (Provider: Linkedin) ★ "Advanced CSS Media Queries" Certificate (Provider: Linkedin) ★ Google Ads - Measurement Certification (Provider: Google) My biggest CLIENTS: ★ Microsoft, Unilever, Netflix, Toyota, Hyundai, Adobe, BBC, LG, Renault, Fuji, Facebook, Instagram, 3M, Sony, Coca-Cola, Dulux, GLS, Amazon Prime Video, Bayer, Meta. My major SERVICES include: ★ DESIGN & CODE custom email templates, campaigns, automations ★ Programming modules for HubSpot (HubL), Salesforce (AMP Script), Marketo ★ Email deliverability (Setup DKIM / SPF / DMARC) ★ Litmus tests My English is fluent. I lived and worked for three years in Ireland (Roscommon). SKILLS: Expert Level: HTML5, CSS, Photoshop, Figma, Illustrator, inDesign, AMPscript Average level of knowledge: Python, JavaScript less
Hire european74
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✅ 15+ years of experience ✅ 70+ projects delivered ✅ 10k+ Hours ✅ 100% Success Score ✅ 5 Stars ✅ Backed by a skilled team for handling complex projects Doubtful about finding a developer who can handle complex challenges or pick up the pieces from a previous failure? Wondering if it's possible to have a bug-free,...✅ 15+ years of experience ✅ 70+ projects delivered ✅ 10k+ Hours ✅ 100% Success Score ✅ 5 Stars ✅ Backed by a skilled team for handling complex projects Doubtful about finding a developer who can handle complex challenges or pick up the pieces from a previous failure? Wondering if it's possible to have a bug-free, scalable solution? I've seen and solved it all. With a commitment to deliver and a track record of success, I am here to protect your project from common setbacks and elevate it to its highest potential. Hi! I'm a Senior Full-stack developer with over a decade of experience in the tech industry. I specialize in delivering comprehensive frontend and backend solutions, from concept to deployment, bolstered by solid experience as a Solution Architect and a Dev Lead. In 2015, I gathered my own web dev team from the ground up, as an extension of my software developer expertise and wisdom. Now, with over70 successful projects behind us, we focus on creating IT solutions for businesses to guarantee their growth and prosperity. ---=== Why I Stand Out: ===--- - Unmatched Reliability: Every project I undertake is guaranteed to reach completion, irrespective of the initial condition or challenges encountered along the way. - Continuous Support: My relationship with clients extends beyond project completion. I offer ongoing support to ensure continued success and adaptability in an ever-evolving digital landscape. - Scalable Team Leadership: While I thrive as a sole developer, I also lead a talented team of developers, ready to scale according to your project needs. This flexibility allows me to tackle projects of any size and complexity, delivering high-quality solutions on time and within budget. - End-to-End Solutions: From initial consultation to final delivery, I manage all phases of the development cycle. ---=== My Technical Foundation: ===--- - Frontend Expertise: Proficient in HTML, CSS, JavaScript, TypeScript, and an array of frameworks & libraries including React.js (with Redux, Thunk, Sagas, Next.js), Bootstrap, Material UI, CSS in JS, Tailwind, and React-Admin. - Backend Proficiency: Skilled in Node.js, Express.js; along with Feathers.js, RESTful API, GraphQL development, Socket.IO, Strapi, and BullMQ. - Data Visualization Mastery: Experienced with D3.js, Chart.js, GSAP, Three.js, React Three Fiber, and techniques involving Canvas and SVG. - Database Management: Competent in managing data using SQL, PostgreSQL, MongoDB, and ElasticSearch. -DevOps & Deployment: Knowledgeable in Docker, Kubernetes, and implementing CI/CD pipelines with GitHub, GitLab. less
Hire rostcompany
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I am a highly competent php developer with a proven track record in designing websites, developing apps and managing databases(problem solving also). I have strong technical skills as well as problem solving skills, enabling me to logically solve a problem in software and a hardwares. I am eager to try a new path in...I am a highly competent php developer with a proven track record in designing websites, developing apps and managing databases(problem solving also). I have strong technical skills as well as problem solving skills, enabling me to logically solve a problem in software and a hardwares. I am eager to try a new path in order to grow and further improve my php skills. My greatest passion in life is using my technical know-how to helping other people or organisations and solve problems. less
Hire Baxiol
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Hello, I am a highly skilled and experienced Web | Mobile | AI developer with a passion for creating innovative and cutting-edge solutions. With a strong background in software development, I specialize in building robust and scalable web and mobile applications, as well as leveraging artificial intelligence...Hello, I am a highly skilled and experienced Web | Mobile | AI developer with a passion for creating innovative and cutting-edge solutions. With a strong background in software development, I specialize in building robust and scalable web and mobile applications, as well as leveraging artificial intelligence technologies to enhance user experiences. I have [15] years of professional experience in the industry, and throughout my career, I have successfully delivered a wide range of projects across various domains. From e-commerce platforms and social networking apps to intelligent chatbots and machine learning algorithms, I have a solid track record of creating high-quality software solutions. I am proficient in a diverse set of programming languages and frameworks, including but not limited to JavaScript, Python, React, Angular, Node.js, Swift, and Kotlin. This expertise allows me to adapt to different project requirements and deliver efficient and reliable solutions. I have a deep understanding of web and mobile development best practices, including responsive design, cross-platform compatibility, and performance optimization. I am well-versed in working with modern development methodologies such as Agile and Scrum, ensuring efficient project management and timely delivery. My expertise extends to the field of artificial intelligence, where I leverage technologies such as machine learning, natural language processing, and computer vision to create intelligent and personalized experiences for users. Whether it's implementing recommendation systems, sentiment analysis, or image recognition, I am proficient in utilizing AI technologies to drive innovation. I am committed to staying up-to-date with the latest trends and advancements in the industry. I regularly attend conferences, participate in online courses, and engage in continuous learning to enhance my skills and knowledge. As a professional, I am a strong communicator and collaborator, able to understand and translate complex technical concepts into clear and concise language. I work seamlessly with cross-functional teams, including designers, product managers, and stakeholders, to ensure effective collaboration and the successful delivery of projects. I am dedicated to delivering high-quality solutions that meet client requirements and exceed expectations. I take pride in my attention to detail, code quality, and adherence to industry standards and best practices. Overall, my extensive experience, technical expertise, and passion for innovation make me a valuable asset for any project in the Web | Mobile | AI domain. Thank you for considering my profile, and I look forward to discussing your project in more detail. less
Hire christiandev394
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As a freelance programmer, I specialize in creating advanced software in languages such as Delphi, SQL, C, C++ and Arduino. My work focuses on developing applications for Windows and Ubuntu, with a deep understanding of the integration needs of microprocessor systems. My programming skills allow me to create complex...As a freelance programmer, I specialize in creating advanced software in languages such as Delphi, SQL, C, C++ and Arduino. My work focuses on developing applications for Windows and Ubuntu, with a deep understanding of the integration needs of microprocessor systems. My programming skills allow me to create complex solutions that work with PCs, offering clients effective and personalized systems. I have experience in using interfaces and communication systems between hardware and software, which allows me to create reliable and intuitive applications. I am able to adapt to specific design requirements, which is crucial in freelance work. My work is not limited to programming; also includes the design and implementation of PCBs. This ability to combine electronics with programming gives me a unique advantage in creating complex systems. less
Hire LadyBitPL
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My major skills are: - C# - C++ - Java - JavaScript - Unity 3D / 2D - Adobe Air (Actionscript 1, 2, 3) - Mono Game XNA - HaxeFlixel - Desktop Windows and Android Apps and Games My Portfolio: https://wirk.noxi.pl/cv_eng.html I have done a lot of projects connected with virtual reality, Oculus Rift, Oculus Quest / GO...My major skills are: - C# - C++ - Java - JavaScript - Unity 3D / 2D - Adobe Air (Actionscript 1, 2, 3) - Mono Game XNA - HaxeFlixel - Desktop Windows and Android Apps and Games My Portfolio: https://wirk.noxi.pl/cv_eng.html I have done a lot of projects connected with virtual reality, Oculus Rift, Oculus Quest / GO and HTC Vive (I developed unique calibrating system for making free roaming VR Arena). Also I have a some knowledge about design, drawing, 3D modeling, and sound engineering because for some years I have been making games utterly alone. I am not afraid of any kind of challenge. === If you do not speak English we can try to communicate via translators I am sure that we will manage to do it :) less
Hire nyxhrim
