Top Upwork Freelancers

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  1. Jon Rowe

    Jon Rowe

    Actionscript/Flex Expert with comprehensive design and artwork skills

    United Kingdom - Last active: 2 days ago - Tests: 3 - Portfolio: 6

    Self-motivated, innovative developer with a track record of delivering stunningly visual and enjoyably social games and apps for both web and mobile. Plans, tests and delivers quickly and efficiently using a wide range of industry standard tools and frameworks. Employs sound Object-Oriented techniques to create well-documented, organised, bug-free code that is built to last. Areas of expertise include: • Flex/Actionscript 3 • TDD/BDD • Starling/Feathers • Away3D • Robotlegs 1 & 2 • PureMVC • Box2D, Nape Physics • AS3Signals • Facebook Graph API, Twitter API, Instagram API • iTunes Connect/Google Play Store integration • Angular.js/Express.js/Node.js full-stack test-driven development • Git/SVN

    $31.11 /hr
    86 hours
    5.00
  2. Marc D.

    Marc D.

    Independent Software Engineer

    China - Last active: 4 days ago - Tests: 1 - Portfolio: 6

    I aim to assist customers in finding appropriate technical solutions to business problems. Where needed I can advise with well thought out technical options during the planning phase. During execution I can produce well designed system plans and reliable, well tested final products. During maintenance, I can assist with safe and non disruptive upgrade and migration of functionality. I currently focus on mobile development projects, but I take on non mobile work depending on what sort of work will benefit my customers most.

    $66.67 /hr
    1,102 hours
    5.00
  3. Marin Katic

    Marin Katic

    SMB IT and Microsoft Office 365 Specialist

    Croatia - Last active: 2 days ago - Tests: 6

    Microsoft Certified Specialist. Microsoft Server, Office 365, Windows Azure, Microsoft Desktop. 18 years of experience in planning and administering Microsoft platforms in Insurance companies and IT companies. Leading teams of IT specialists. Experience with dedicated security solutions (logging, identity management, database access monitoring). Social skills experience: Help Desk and Desktop and App administration for over 500 users.

    $30.00 /hr
    57 hours
    5.00
  4. Lei L.

    Lei L.

    Experienced J2EE/.Net, Delphi Developer,Oracle Fusion Middleware

    China - Last active: 1 month ago - Tests: 8 - Portfolio: 7

    Over the last 10 years, I have developed many enterprise level business applications using Html, Flex, J2EE, Resin/Tomcat, IBM WebSphere/Bea Weblogic, Oracle/MySQL for medium/large companies and medium businesses in Oil & Gas industry.My main customers are PetroChina,Sinopec,Haier. (NOTE:These experiences are not included in my "Portfolio" section, Because they are deployed in enterprise's internal environment and invisible to public) My personal interests are making desktop application using C#,Delphi,VB.I have developed many productions, Some of them can be found in my "Portfolio" section. I also provide English to Chinese translation services and Software/Website localization services. As a professional person, Supply best services to employer is my duty, And customer satisfaction is my eternal pursue.And i also believe "Cooperative Relationship" will better than "Employment Relation". "Good communication is the foundation of a successful project".

    $35.00 /hr
    246 hours
    5.00
  5. Ivan L.

    Ivan L.

    Team Lead, Senior Ruby on Rails, co-founder at RM

    Ukraine - Last active: 1 month ago - Tests: 1

    I'm a Tech Lead with about 8 years experience in web-development and about 4 years in Ruby on Rails. I have in portfolio more than 40+ finished rails projects from social platforms and e-commerce to SaaS. I'm self motivated, can solve complex tasks in a short time. In the past two years my main roles were architecture planning, choosing the right technology stack using the client's requirements, development management, team management I like Agile and use it every day - iterations, scrum daily meetings, retrospectives. I like confident code and TDD/BDD. I'm experienced in RSpec, Capybara and Cucumber. Often I help clients to understand what will be the best development approach for them. Do they need only MVP or there is a sense in building full version. What technologies are best for their project. Plan deadlines and budget. I'm very familiar with AWS technologies stack - setup EC2 instance from scratch, configure balance loader(EBL), setup push notifications service(SNS), emails(SES), database instances(RDS), and other services I have an experience in buiding a high-load applications, huge processing centers with 1,000,000 processed jobs daily(in Sidekiq), PostgreSQL database size more than 500GB and everything places on EC2 instance with 32 Cores and 68GB RAM. That was very excited. I'm a fun of continues integration and continues deploy practices. I also have experience in front-end development: JavaScript on advanced level, canvas, CoffeeScript, web-sockets(socket.io) with node.js back-end, backbone.js, Ember.js In the past years there is a trend to have an application with RESTful JSON API built in Ruby on Rails. I have experience in building more than 5 different APIs for different projects. Some of them were versioning and have up to v4. There is always a challange to support old versions, but we successfully doing it. Some have HIPAA protection, one application had a really complex structure of API URLs but it was very easy to work with it in the end since we built it human readable. Thanks for you time!

    $40.00 /hr
    3,106 hours
    4.87
  6. Anton K.

    Anton K.

    Expert Web Developer (PHP / Yii / Laravel)

    Canada - Last active: 11 days ago - Tests: 3

    Almost 10 years of experience as a PHP Developer and a Dev Lead. Has been involved in a development of several successful internet start-ups in Russia. Nowadays I am working as a Web Programmer in BC, Canada. I believe that implementation of properly built software can dramatically improve efficiency of a business. This is the reason why I am so passionate about reliability and longevity of the products I make and the reason why I take any downtime personally. For the same reason I prefer to work on bigger and longer projects so I can better understand business processes and needs. I love automating processes so the business owners and employees can focus on the business rather than on tools they are using. I had experience implementing systems that reduced number of employees required to keep the business running by 50% and systems that allow cross-country companies to go paperless. I have solid experience in developing web applications from a scratch, as well as fixing other's code. Web development is what I do my whole life and I am looking for some interesting part-time projects to spend my evenings and weekends on.

    $38.89 /hr
    381 hours
    5.00
  7. Sergey Golovchenko

    Sergey Golovchenko

    DevOps/System/network administrator

    Ukraine - Last active: 2 days ago - Tests: 4

    My goal is providing only hight quality service. If you have any IT task - ask me, and I'll provide complex solution. Filed of my expierence covers, but not limited to: OS: varios Linux (Ubuntu/Debian/CentOS and other), FreeBSD SCM: Puppet Web servers: Apache, Nginx Database servers: Mysql and clones, Postgresql Monitoring: Nagios, Zabbix (preffered),Cacti Virtualization: Openvz, XEN and XenServer, KVM Cloud services: AWS, Rackspace Scripting: bash, python. Mail servers: postfix, dovecot, exim, sendmail and many others Networking: standard network services (DNS, DHCP, Samba, SVN/Git, http proxy, jabber, VPN, backups, monitoring etc), firewalls and routers (iptables, iproute, VLAN, bridging, bonding, BGP, OSPF), different hardware (Cisco, Extreme networks, mikrotik and many other) PS: This list isn't full, as long lists looks ugly :) Also I'm very interesting in development/DevOps task's, especially python development.

    $55.56 /hr
    211 hours
    5.00
  8. Pavel Zindyaev

    Pavel Zindyaev

    Linux Administrator / Windows Administrator / DevOps

    Russia - Last active: 6 days ago - Tests: 8

    Hi, I am Linux/Windows system administrator I have more than 10 years experience with things like: - Virtualization: VMWare ESX - Web Servers: Apache, Nginx - Database servers: MySQL, PostgreSQL - Optimization high-loaded web services based on Apache, Nginx, MySQL - Telephony: Asterisk, 3CX - Building High Availability systems: HA, drbd, haproxy, heartbeat - Network Administration: VPN, firewalls, building secure network architecture - Any kind of e-mail servers, DNS servers - Configuration management: Puppet, Chef - Windows Administration: Active Directory, MSSQL, Group Policies, Dynamics CRM - LDAP: OpenLDAP, ApacheDS - Continuous integration: maven, Jenkins/Hudson, TeamCity - Development: Java, Python

    $33.33 /hr
    264 hours
    4.92
  9. Billy Guthrie

    Billy Guthrie

    IT Network Technologist

    United States - Last active: 1 month ago - Tests: 10 - Portfolio: 8

    I am an talented and experienced Technologist that is knowledgeable in the field of network engineering, sales engineering, physical security engineering (Alarm Systems, Access Control, and Video Surveillance), and communications. I am a very direct and trustworthy person; I will not waste your time, so I expect you will not waste mine. If you request my services, I will assume you are aware of my hourly rate; please do not request a lower rate. I enjoy the work I do and I do my best to be as efficient and as productive as I can while always putting the client's interest before my own financial gains. With that being said, I am a sole contracting firm; I run a very successful local profitable business here in Hawaii. I can provide consulting services and remote network engineering skills utilizing Amazon AWS VPC and EC2 network design on VPN, BGP, GRE utilizing VyattaOS. LAN infrastructure - Routers/Switches/Firewall, VLANS, LACP, PAgP,802.1q, RSTP, OSPF, BGP, Trunking, etc. WAN infrastructure - Point to Point DS3 (T3) and DS1 (T1) utilizing ATM and SONET Technology; DSL and cable modem Internet Backup links, Site to Site/Site to Mult-isite and Client to Site VPNs. Internet and intranet DNS - Domain Registration, Domain setup on Microsoft / Bind DNS servers, and troubleshooting DNS Related issues. - Domain delegations utilizing glue records and also setting up caching nameservers. Wireless: Mikrotik, Ubiquiti, and Motorola Point-to-Point and Point-to-Multipoint design, installation and configuration. Wireless RF planning of indoor and outdoor wireless networks utilizing heat maps for wifi coverage. Technology: I have a great deal of experience in various ISP (Co-location, Data Center, Internet Service Providers) technologies that focuses on managed services utilizing Juniper and Cisco Firewalls, Cisco, HP and Foundry Layer 2 and Multilayer switches, Cisco and Juniper Routers, Cisco and Foundry Load Balancing utilizing Content Switching and ServerIron Technology, and IP address optimization. IPv6: I can provide IPv6 support and consulting services on the creation of business plans, business cases, migration, transition, new installations, and upgrades to your existing IPv4 network. Security Solutions: Honeywell, 2GIG, GE, ITI, Alarm.com, Total Connect, Interactive services, IP CCTV, IP Surveillance, IP Camera, Alarm System and CCTV System design (Pre and Post Sales Support). CVE-2014-0160 - OpenSSL Heartbleed patching.

    $45.00 /hr
    471 hours
    4.98
  10. Nicole W.

    Nicole W.

    Novelist, Blogger, Writer.

    Australia - Last active: 4 days ago - Tests: 3

    I'm a professional freelance writer and novelist from Australia. Published widely in print and online, my areas of expertise include feature articles and blogs on Travel, Lifestyle, Health and Wellness, Entertainment and Creative Writing, incorporating SEO and social media techniques. Dedicated to deadlines, accuracy and quality, I am proficient at engaging audiences with inspirational content in order to successfully meet the needs of clients. Samples of my work can be found at: http://www.huffingtonpost.com/nicole-leigh-west/ http://www.lifehack.org/articles/lifestyle/30-amazing-ways-travel-australia-even-youre-budget.html http://www.lodestonebooks.com/authors/nicole-leigh-west http://www.nicoleleighwest.com http://www.thespiritualroom.com

    $40.00 /hr
    88 hours
    5.00