Javascript Developers for hire in Poland

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  • Hire talarek
    6.2
    26 reviews $40 USD per hour
    Responsive Email Templates. Accessible and Semantic HTML. Search Engine Optimization. Cross Browser Compatibility. Screen Readers Optimization. Programming using PHP and MySQL. Themes for Drupal and Contao. Knowledge of Photoshop. Graphic Design. Optimizing Web Graphics. Page Load Time Optimization.
    Responsive Email Templates. Accessible and Semantic HTML. Search Engine Optimization. Cross Browser Compatibility. Screen Readers Optimization. Programming using PHP and MySQL. Themes for Drupal and Contao. Knowledge of Photoshop. Graphic Design. Optimizing Web Graphics. Page Load Time Optimization. less
  • Hire cestis
    5.5
    44 reviews $25 USD per hour
    I have a lot of experience with programming languages and technologies like: JavaScript, HTML, CSS, PHP, SQL, Java. I work on both Linux and Windows. I also write/edit: - Minecraft plugins using Bukkit and Spigot API - Smarty templates - Websites built on PHP MVC framworks (Symfony, Laravel, CakePHP, etc.) - Websites...
    I have a lot of experience with programming languages and technologies like: JavaScript, HTML, CSS, PHP, SQL, Java. I work on both Linux and Windows. I also write/edit: - Minecraft plugins using Bukkit and Spigot API - Smarty templates - Websites built on PHP MVC framworks (Symfony, Laravel, CakePHP, etc.) - Websites that use various APIs, like Steam API, Google APIs and social media APIs - Websites that use various UI frameworks, like OneUI - Websites that use Bootstrap framework and jQuery library - Google Chrome extensions - online payment integrations - and more, just ask less
  • Hire datadiggers
    4.8
    5 reviews $100 USD per hour
    I make websites faster. I optimize for speed MySQL and Magento. I work ONLY on projects related to performance optimization. What I can do for You ================ - speed up Your website (1-2 second complete page loads), - optimize MySQL server (includes complete audit, query rewriting etc.) - make Magento super...
    I make websites faster. I optimize for speed MySQL and Magento. I work ONLY on projects related to performance optimization. What I can do for You ================ - speed up Your website (1-2 second complete page loads), - optimize MySQL server (includes complete audit, query rewriting etc.) - make Magento super fast (1-2 second complete page loads), - improve Your GTMetrix or PageSpeed score to 90+/90+ or even 100/100, - install and configure Varnish, Memcached, Redis and more, - explain everything I'm doing with Your site/server, - provide work log and reports with list of all changes I've made. I also work on other types of optimization projects - PHP code optimization (with profiler), general HTML/CSS/JavaScript optimization projects. I'm also Java developer and I can speed up Your Java code too. I can set up and tune for best performance Nginx, Apache and MySQL clusters. I've worked with small, medium and huge databases (from 1MB to 100GB of data). Who I am ================ I always work with caution, making backups before touching anything else. I'm reliable person which will work on Sunday (if needed) to make sure that Your site is up and running. We can communicate through email, Skype, phone or Google Hangouts. My English is quite good (contrary to many other freelancers I didn't hire anyone to write this text for me). I never failed on any project and I have exceptionally high repeat hire rate (at least in terms of Freelancer.com standards). How to NOT hire a freelancer ================ Even if You decide to not hire me consider those tips when choosing a freelancer - especially if You don't have much experience: - consider only freelancers who can finish their projects, the ones with 95%+ completion rate, - consider only freelancers with high repeat hire rate ( 20% or more) - if it's lower it means that his/hers clients were not satisfied with their work, - most reviews are SPAM and come from colleagues, - do not be impressed by Freelancer.com green score (the one in 0.0 - 10.0 range) - it does not reflect how often freelancer fails on project, his ratings etc. less
  • Hire lockbox
    4.9
    7 reviews $50 USD per hour
    Over 12 years of experience with web development, including about 11 years with php (as manager and developer), over 3 years with nodejs, almost 5 years with freebsd (as sysadmin), over 7 years with simple and/or distributed scrappers/crawlers (php/python/nodejs based workers) and many other technologies around those...
    Over 12 years of experience with web development, including about 11 years with php (as manager and developer), over 3 years with nodejs, almost 5 years with freebsd (as sysadmin), over 7 years with simple and/or distributed scrappers/crawlers (php/python/nodejs based workers) and many other technologies around those things makes me valuable member of Your team. less
  • Hire SebastianHewelt
    0.6
    1 review $20 USD per hour
    What I do: Front-end web development: - Custom websites: dynamic content, landing pages, GSAP Animation, SVG Animation, Hugo Websites, Gatsby Websites - Chrome Extensions - Fixing bugs Workflow: Professionalism lies at the core of my workflow. The first thing I do when I accept the job offer is I do my best to...
    What I do: Front-end web development: - Custom websites: dynamic content, landing pages, GSAP Animation, SVG Animation, Hugo Websites, Gatsby Websites - Chrome Extensions - Fixing bugs Workflow: Professionalism lies at the core of my workflow. The first thing I do when I accept the job offer is I do my best to get to know the needs of the client. We talk about the project A LOT, sharing ideas, providing examples. When we're 100% sure we're on the same page, then and only then do I start the hard work. I love to work in the atmosphere of mutual respect and understanding. Daily/weekly update-talks with clients give me assertion that we're headed in the right direction. Don't hesitate if you'd just like to say hi :) less
  • Hire Forket
    0.9
    2 reviews $37 USD per hour
    IT Consultant and troubleshooter with experience of 17+ years. Highly motivated to satisfy your business needs using technologies. Highly professional in Office 365, SharePoint, Azure and PowerShell technologies including all related skills: JavaScript, jQuery, AngularJS. Professionally leading projects using latest...
    IT Consultant and troubleshooter with experience of 17+ years. Highly motivated to satisfy your business needs using technologies. Highly professional in Office 365, SharePoint, Azure and PowerShell technologies including all related skills: JavaScript, jQuery, AngularJS. Professionally leading projects using latest standards, using Agile approach, which gives an opportunity for my passion to become your success. less
  • Hire lukaszoz
    1.7
    1 review $35 USD per hour
    I am a developer with five years of experience. My organized and planned approach to work enables me to provide deliverables in a timely manner, yet I'm able to adapt to a changing environment. Also I have strong passion for software development and thanks to that I’am able to develop modern analitical tools for...
    I am a developer with five years of experience. My organized and planned approach to work enables me to provide deliverables in a timely manner, yet I'm able to adapt to a changing environment. Also I have strong passion for software development and thanks to that I’am able to develop modern analitical tools for business. I’ve built and shipped applications from websites to complex financial systems. Specialities: - Strong analytical and problem-solving skills - Demonstrated initiative and ability to drive processes in order to meet project deliverables and work both independently and as part of a team - MS applications – excellent Excel and Access skills, ability to work with large sets of data - Other systems & applications (good knowledge of Business Objects, SharePoint) - Programming: C# (, WPF), VBA Java Script, PowerShel, VBS, - Databases : SQL databases, RavenDB. Certification: - Exam 532: Developing Microsoft Azure Solutions less
  • Hire kaubea
    3.6
    2 reviews $25 USD per hour
    I'm a Computer Science professional with 9+ years experience in Magento development. Backend skills: - Magento 1/Magento 2 installation - implementing security patches - upgrade to newest version, upgrade from Magento 1 to Magento 2 - fixing problem with cache, index, performance - optimize store to get a better...
    I'm a Computer Science professional with 9+ years experience in Magento development. Backend skills: - Magento 1/Magento 2 installation - implementing security patches - upgrade to newest version, upgrade from Magento 1 to Magento 2 - fixing problem with cache, index, performance - optimize store to get a better result in software like GTmetrix - add new functionalities to existing modules without core code modification - module installation (M2EPro integration, onestepcheckout, nosto , bronto, mailchimp and more) Fronted skills: - pixel to pixel theme from PSD - responsive layout - rich snippets - jQuery, prototype - html5 - sass - bootstrap, foundation Created custom modules (few examples): - lettering designer - payment gateway integration - customer award points - sticker configurator - 'many pages' checkout - syncing with 3rd party API (for example Shipstation, Intex ERP) Familiar with git/svn repositories, unix server configuration (nginx/apache, php, mysql, varnish, redis) less
  • Hire pbcode
    1.8
    1 review $30 USD per hour
    I put 100% effort into your project and customer satisfaction. I am available online for about 16 hours. Specialize in converting PSD to WordPress. The more accurate and better prepared the design, the faster the conversion. Best PSD format: - individual views in separate PSD files - possibly equipped with an...
    I put 100% effort into your project and customer satisfaction. I am available online for about 16 hours. Specialize in converting PSD to WordPress. The more accurate and better prepared the design, the faster the conversion. Best PSD format: - individual views in separate PSD files - possibly equipped with an additional layer with commentary - Tablet and mobile PSD, unless the tablet view overlaps with dextop it is unnecessary - Icons in a separate package in SVG format, if possible - A PDF document with a description of the website, effects, desired action, with links to some places in the network where individual effects / actions can be seen in motion. less
  • Hire tomkusvw
    2.7
    3 reviews $15 USD per hour
    My name is Tomasz Kustra, I am 35 and live in Poland. I have graduated in computer science and econometric. I am programmer for about 16 years and I have created many very nice apps ;-) **Why is it a good idea of choosing me?** - knowledge and skills; - I am "easy learner" and willingly learn new...
    My name is Tomasz Kustra, I am 35 and live in Poland. I have graduated in computer science and econometric. I am programmer for about 16 years and I have created many very nice apps ;-) **Why is it a good idea of choosing me?** - knowledge and skills; - I am "easy learner" and willingly learn new concepts/platforms/technologies; - I don't pretend to be an expert in all categories, but I'm good at what I am doing; - And of course I'm not trying to bid things that overgrows me... ## Area of Expertise **Amazon** Gathering data from Amazon - sellers inventories, - prices, - reviews, - emails, - any other info - Product Advertisement API - MWS API **Web scraping** fast and reliable with proxies and decaptchers **Programming:** C/C++ (Borland C++ Builder) C# Perl (incl. Perl/Tk) Java VB: - VB .NET - VBA (Excel, Word) - VB (4, 5, 6) HTML, PHP... SQL XML less

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