Top Upwork Freelancers

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  1. David Ken

    David Ken

    Full Dedicated Mobile App Developer

    Singapore - Last active: 17 hours ago - Tests: 2

    Hello, thanks for your visit. I am a skilled iPhone/iPad/Android app developer. Over last 4 years, I have developed a wide range of high-ranked mobile applications, mainly for native iOS and Android platform. There are 100 more apps from iTunes, Google Play Store and so on. Now, I am working as an individual freelancer, and I am seeking opportunities to work for full-time job or to build long-term relationship for large-scale applications. I am ready-to-work for any kind of outsourcing jobs, and always happy to discuss any type of topic for job or technical support. I will show you my passion and strong skills through awesome & fast working and great result. Experienced jobs - social-oriented application like Instagram, Vine, Butter. - business application - journal/news - live streaming - kiosk-browsing application - geolocation / gps check-in application - bluetooth using iBeacon Skills - iPhone & iPad, Android programming - social networking design - live streaming technique using GCM, SDL - camera re-skin - photo/video processing - in-app purchase integration including Apple hosting content. - 3rd party social integration, including Facebook, Twitter, Google+, Pinterest, Instagram - push notification implementation including backend support - agile & test-driven development technique - Parse / HTTP &REST API / CoreData & mysql & &sqlite - HTML / PHP / JSON / XML Details of service - quick response in email, within 6 hrs - Skype online: (9:00 am ~ 7:00 pm | GMT+8) or (8:00 pm ~ 5:00 am | EST) - 40+ full time working - code management through Github, with submit daily/weekly - free testing to hire job - 1month after-service Best regards, Sincerely!

    $33.33 /hr
    1,021 hours
    5.00
  2. Volodymyr P.

    Volodymyr P.

    System and network administrator

    Ukraine - Last active: 17 hours ago - Tests: 11

    I am system administrator with 15 years experience. Over the last 6 years I manage RHEL and Debian servers. I am part time freelancer since 2012. My core competency is Redhat and Debian family linux. I have experience in general system administration, mail servers, VPN, VOIP, LAMP, virtualization. Also I have experience in FreeBSD, Windows server and workstation support, network planning and management, Cisco routers and switches, QOS, I am familiar with ITIL, incident management, business continuity planning.

    $50.00 /hr
    638 hours
    4.92
  3. Artem S.

    Artem S.

    Ruby on Rails Fullstack Ninja

    Russia - Last active: 3 days ago - Tests: 5

    Hello, and thanks for viewing my profile! I'm awesome web-developer, who can build you any product you want in any, ever almost impossible deadlines. I always do my best in learning new approaches to create a wonderful things, and do even more to deliver all this awesomeness into your product. My key – is caring about what I do and how I do. Send me a message and you'll never regret. I'll make you and your users happy. Knowledges: Ruby, Ruby on Rails 3/4 Angular.js HTML/HTML5/HAML/Jade/Slim/erb CSS/SCSS CoffeeScript/JavaScript node.js ActionScript 3 / Air (Adobe Flash technology stack) with cross-compile to mobile platforms (with starling) PaaS: AWS, Heroku, Nodejitsu. MySQL, PostgreSQL, sqlite3. mongoDB, redis, memcached. TDD/BDD – RSpec, Capybara, jasmine SVN, Git. Twitter Bootstrap, socket.io, jQuery, sugar.js, underscore and dozen of other popular libraries. Experienced with building RESTful API. Experienced with a highload. Background jobs with existed solutions (resque, delayed jobs, etc) and just pure Rake & Cake tasks for automating processes. oAuth with popular social networks (Facebook, Twitter, Vkontakte). Used to work with Wowza Media Server (live video streaming), with writing plugins to it. ... and even more. If you are still in doubt – just contact me and I tell you how exactly I build what you want. Thanks for viewing my profile!

    $42.00 /hr
    737 hours
    5.00
  4. Mihai Dinculescu

    Mihai Dinculescu

    Application Developer

    Romania - Last active: 17 hours ago

    Full stack application developer with over eight years of experience developing: - Ruby on Rails web applications; - ASP.NET MVC and Web Forms web applications; - Windows native applications and services; - Office Automation solutions. Certifications: - (2015) Microsoft Certified Solutions Developer: Web Applications; - (2014) Microsoft Certified Specialist: C#.

    $45.00 /hr
    425 hours
    4.99
  5. Tome N.

    Tome N.

    Experienced iOS/Android Developer

    South Africa - Last active: 6 days ago - Tests: 8

    Greetings! Whenever you want to build a real good app which can bring you success, I'll be there for you. I have 7 years' experience in software development, especially 4 in developing mobile apps & games (in iOS/Android versions). Through my career I've always been responsible for my product. I always cared whether it would be welcome by users. I always introduced the most correct working style to produce bug-free apps. When you hire me for a project, you also hire a good mentor. It takes more than just programming skills to turn your ideas into a good application. As I not only developed apps, but analyzed the apps market for successful product, I have all-round systematic view over successful and non-successful mobile apps and games. What I value most? It's not money you pay, but the credibility I build in your mind. I want to be trusted and desires long-term relationship. So your satisfaction is my major goal. So with me, you can be sure of good working relationship, every detail of your need paid attention to, and product which you are totally satisfied with. ----------------------------------------------------------------------------------------------------------------- My skill summary My experience contains following fields… 1. Apps + Games Social Networking Apps Social Turn Based Games Dating Apps Health & Fitness Apps Food & Drink Apps Navigation Apps Photo & Video Apps Music Apps Travel Apps Utility Apps Casino Games Role playing Games 2. Frameworks, APIs, Services JSON, XML In App Purchase Advertisement (iAd, AdMob, RevMob, ... ) Push Notification Facebook APIs, Twitter APIs, LinkedIn APIs Third Party (Parse, kumulos, kinvey…) Instagram APIs, Youtube APIs Google APIs (Map APIs, Place APIs, ... ) DropBox APIs Cocos2D Box2D, Chipmunk Game Center Artificial Intelligence (Card Game, Chess) 3. Development Tools. Xcode Eclipse, ADT Visual Studio 4. Programming and Script Languages. C/C++ objective-c Java JavaScript HTML5 5. Mobile Devices ( that i have ). iOS - iPhone 4S, iPhone 3G, iPhone 6Plus iPad 2. iPad Air Android - Samsung Galaxy S3, Samsung Galaxy S5 ------------------------------------------------------------------------------ I am always ready for clients ... Regards!

    $45.00 /hr
    62 hours
    5.00
  6. steven xie

    steven xie

    Web Developer

    China - Last active: 12 days ago - Tests: 5 - Portfolio: 4

    I have 8+ years of J2EE/JavaScript web development experience.Engaged in internet industry.I have a strict and careful work habits. Familiar with the following technologies: 1.Java,Jsp,Servlet,Spring-FrameWork,Hibernate,SpringMVC,MyBatis,Struts,Lucene,Velocity,Freemarker 2.Development environment:Eclipse,NetBeans,Maven,CVS,SVN,GIT,Jira and so on... 3.Unit Test technologies:Junit,MockITO,DBUnit;Selenium 4.Application container,such as Resin,Tomcat,Jboss,GlassFish,Jetty 5.Front-end technology,such as Html,CSS,Javascript,Jquery,Bootstrap,PSD convert to HTML 6.Proficient in mobile web app development,such as phonegap technologies. 7.Familiar with db technical,such as Oracle,Mysql,Db2 8.Operating system:Linux,Windows

    Groups: Crossrider

    $36.00 /hr
    4,706 hours
    4.96
  7. Sarah Murphy

    Sarah Murphy

    Content writer & blogger, specialising in alternative medicine

    United Kingdom - Last active: 12 days ago - Tests: 8 - Portfolio: 8

    Need a versatile and accomplished writer who can adapt their work to suit your style? Got an idea that you just can't put down on paper? Crafting compelling web content, blogs, news articles and e-books for a wide variety of audiences is my specialty. I've written about everything from Ayurveda to victim's rights. As an idea generator and creative content writer, I have the skills to sell your product and make your articles come to life. I'm a qualified Naturopath and Herbalist, and having run my own Wellness Clinic for a number of years, I'm well positioned to write on related topics such as detoxification, diet, lifestyle, and preventative medicine. I've written for a number of high profile websites and publications on various aspects of Naturopathic and Alternative Medicine. As a business person, I understand the importance of content marketing and how social media platforms can be utilised to reach out to your target audience. I have a background in teaching, so you can be confident you're hiring a content writer with high levels of attention to detail, excellent proof reading skills, and a commitment to doing a professional job for you. My speciality lies in making complicated information easily accessible. My reader friendly style will speak to your customers - without sounding patronising or filled with unnecessary, complicated jargon. From the initial research stage, right through to final editing, you can be assured 100% effort will be put into producing a piece of work that exactly fits your needs. Hire me and you're guaranteed job satisfaction at a price to suit your budget. I'm a reader as well as a writer, and am always looking for new and diverse projects to get creative with. I regularly update my skills so you can be assured you're hiring a professional with their finger on the pulse. I've worked for a number of clients on projects outside of my specialisms, and my portfolio is a testament to my diversity. No challenge is too big! My ethos? To work with honesty and integrity to build great working relationships with all my clients. My goal? To consistently provide high quality writing you can be confident will bring in business. It's my view that web content should always empower and inform, and I endeavour to write content that will contribute to making the internet a more enlightening forum for everyone. I have my own personal website where I write about my work and a plethora of natural health related topics. I'm currently in the process of writing an e-book to take to publication, and speak widely on the subject of natural health.

    $40.00 /hr
    58 hours
    5.00
  8. Ilya N.

    Ilya N.

    System Administrator / DevOps

    Russia - Last active: 17 hours ago - Tests: 11

    12+ years of experience in administration of servers powered by the Linux and FreeBSD operating systems. Highly dedicated to success, a hard working person. Full time independent contractor during the last 4 years. * CentOS, Debian, RHEL, Ubuntu; FreeBSD, OpenBSD * AWS, Digital Ocean, Hetzner, Linode * Ansible * Apache, lighttpd, nginx, uWSGI * MySQL, MariaDB, PostgreSQL * Postfix, Dovecot, Postgrey, SpamAssassin, ClamAV, OpenDKIM * Docker, KVM, libvirt, LXC, OpenVZ, Vagrant, VirtualBox, Xen, FreeBSD jails * BIND, NSD, PowerDNS * LVM, DRBD, Heartbeat, Keepalived * Quagga, Open vSwitch, iptables, ipfw, pf, bonding, bridging * StrongSwan, OpenVPN, Racoon * Sensu, New Relic, Nagios, Munin, SmokePing, Monit, Collectd * SAN: HP MSA, IBM DS * Backups: duplicity, rsnapshot, bacula * Python (Boto, Django, Scrapy), Ruby, shell, PHP * cPanel/WHM, WHMCS (designed and developed from scratch a registrar module for an unsupported domain registry)

    $50.00 /hr
    1,852 hours
    5.00
  9. Zulqarnain Sarani

    Zulqarnain Sarani

    KOFAX (DMS) and BPM Consultant. SP2010 Developer. SMS Gateway APIs

    Australia - Last active: 25 days ago - Tests: 2 - Portfolio: 1

    To assist clients and customers achieve their desired goals by providing consultancy thus allowing customers to gain the competitive advantage yet in productive fashion. Expertise range from providing KOFAX consultancy, custom KOFAX development, workflow development, web development, SP2010 consultancy, Skelta workflows development (BPM.Net) etc. Extensive knowledge and practical experience integrating SMS gateways APIs by Twilio, Silverstreet, Spryng, Ozeki, 42Tele, Tyntec, Nexmo, TextMark, Trumpia, Avid and Anchor.

    $50.00 /hr
    835 hours
    4.80
  10. Michael Winter

    Michael Winter

    iOS developer

    Germany - Last active: 17 hours ago - Tests: 7 - Portfolio: 6

    I am a software developer based in Berlin, Germany with more than a decade of experience. During the course of my professional career I had the chance to work for a variety of different companies and clients including EA Sports. As a freelancer, I am strongly focused on iOS development. I can complete smaller projects on my own or work on larger projects as a member of a team. You can expect a seasoned and reliable professional with good English skills who understands client needs and pays great attention to detail. My main skills are: C/C++ Objective C iOS SDK cocos2d

    $60.00 /hr
    782 hours
    4.91