Top Upwork Freelancers

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  1. Roman T.

    Roman T. Agency Contractor

    UNIX and security expert, network and system administrator

    United States - Last active: 3 days ago - Tests: 9 - Portfolio: 3

    I offer the following key services: o Network and System Administrator Services o Information Security Services o IP-PBX and VoIP softswitchs: installation and maintenance o Software development: Web, desktop and server applications o SEO o Complex solutions for business-process automation Core Competencies o Network and System Security o Data Integrity and Recovery o Analysis and Planning o Risk Assessment and Cost Benefits Analysis o Research and Development o Project Management Experience Platforms: IBM, Sun SPARC, MikroTik, Cisco, Huawei, D-Link, Edgecore. OSs: UNIX (FreeBSD, OpenBSD, *BSD, Solaris), Linux (Debian, Ubuntu, Gentoo, Red Hat, SuSe, uLinux, ASP, Mandrake, Fedora Core), CiscoIOS, MikroTik Router OS, VRP (Huawei), Windows 95/98/NT/ME/200/XP/2003/Vista/7/2008. Languages: C/C++, UNIX Shell Scripting (Shell, sed, awk), Delphi (Pascal), Perl, PHP, SQL, T-SQL, Assembler (Intel and AT&T SysV/386 syntax), GTK+ applications, Erlang, HTML, CSS, JavaScript, JQuery, XML, XSLT, DTD. Databases Engines: PostgreSQL, MySQL, Oracle, SQLite, Mnesia, MS Access, Sybase, DB2. CMS: WordPress, Bitrix, osCommerce, Joomla, RoundCube. Panels: CPanel, Plesk, ISPManager, Webmin. Networking: TCP/IP, ISO/OSI, IPv6, Ethernet, VLAN (dot1q), ARP, VRRP, CARP, MPLS L2, MPLS L3, STP, GVRP, PPPoE, VPN, PPTP, L2TP, IPSec, OpenVPN, SNMP, SSH, XMPP, SIP, h323, BGP, OSPF, RIP, IRC, AJAX, Netflow.

    Associated with: IntLös

    $35.00 /hr
    275 hours
    4.92
  2. Valentin Manov

    Valentin Manov Agency Contractor

    Logo / Identity / Brand & Print Design

    Bulgaria - Last active: 6 days ago - Tests: 8 - Portfolio: 28

    For over the past 6 years I've been working as a graphic designer and since that time I've dealt with various projects from different areas of business - Nutritional Supplements, IT Consulting companies, Software Development companies, Educational Programs, Insurance companies etc. Expert in Adobe Illustrator & Adobe Photoshop, I produce designs that are memorable, simple and stand out. I believe that quality design and customer satisfaction is of most importance so I strive to produce designs with which me and my clients can be proud of. I am interested in working with companies or individuals that understand the importance of graphical identity and branding.

    Associated with: Valentin Manov

    $55.56 /hr
    1,572 hours
    4.97
  3. Ivan G.

    Ivan G. Agency Contractor

    Python/Javascript/Embedded Developer and Linux Admin

    Ukraine - Last active: 3 days ago - Tests: 5 - Portfolio: 9

    Over the last 10 years, I have developed a wide range of web, linux-specific and embedded projects using Php, MySQL, Python, C, C++, Qt, JS, jQuery, Twitter Bootstrap and other technologies including sites, daemons, hardware firmware, ARM linux distributions. I'm interesting in network solutions, production (real-world) automation and metaprogramming using Common Lisp.

    Associated with: Theta Labs

    $30.00 /hr
    468 hours
    4.82
  4. Collin M.

    Collin M. Agency Contractor

    Senior Full Stack Developer (Mobile, Web, Script/ Utilities)

    United States - Last active: 8 days ago - Tests: 4 - Portfolio: 15

    I have 10 years of experience in both web and mobile software development as well as script and utility programming. My current main area of interests is within Data Science including data mining/scraping. I have several years of experience in writing screen scrapers for online data sources (scraping in total more than 500 sites). I will be happy to craft a state of the art product for you using the following techs: Bootstrap, AngularJS, BeautifulSoup, Scrapy. I am familiar with many others, but these are my favorite. WEB BACKGROUND I have wide knowledge of many modern technologies in web development stack -- from low-level networking protocols and system tweaking (debian, nginx) to server-side programming (PHP, Node.js, MySQL, MongoDB, Redis) to client-side programming (HTML5 APIs, Javascript, AngularJS). I could solve the programming task of any complexity for you. I prefer developing complex and unique web services and/or user interfaces rather than creating simple websites which are similar to each other. MOBILE BACKGROUND I am the Owner and CEO of a digital development firm, ebork Developments, LLC, which specializes in the development of mobile applications across all platforms (see below). Strong .NET, Java, Objective-C, and Swift programming skills including low-level performance optimizations and memory management. I not only know how to make an application work, but also know how to make it work fast and smoothly. Good knowledge of Android, iOS, and Windows UI patterns and guidelines. I can prototype any application UI for you. SCRIPT/ UTILITY BACKGROUND I have been writing data scrapers and other data intensive scripts/ utilities for many years. My language of choice for many of these is Python. However, I can successfully develop a utility in many scripting languages, including: PHP, Ruby, Perl, etc. I have written screen scrapers for over 500 websites, including Google Search and Craigslist. I have a very high working knowledge of HTML, which helps me quickly write any screen scraper you find yourself needing.

    Associated with: ebork Developments, LLC

    $44.26 /hr
    231 hours
    4.78
  5. Lesley G.

    Lesley G. Agency Contractor

    Freelance Writer / Dutch - English Translator

    United Kingdom - Last active: 1 day ago - Tests: 4 - Portfolio: 33

    I'm a native English freelance writer and translator with a strong business background, superlative language skills and a profound knowledge of Dutch. An accomplished copywriter with a proven track record in crafting compelling SEO web content, blogs, articles and product descriptions, I additionally specialise in delivering seamless Dutch to English translations. With over 20 years professional experience in the IT / Financial Services sector, I'm self-starting, fast, accurate, flexible and reliable, and invariably keen to discuss future collaborations with interesting and challenging clients. Recent feedback includes: - Lesley provided beautiful work in a short amount of time. Would definitely work with her again. - Excellent work. Lesley has an excellent grasp of English language and grammar. - I have received more than expected, a real pleasure working with and I highly recommend her services. - Great writer and would definitely recommend

    Associated with: MPLG Consultancy Agency

    $44.44 /hr
    3,145 hours
    5.00
  6. Ara Sadoyan

    Ara Sadoyan Agency Contractor

    Linux, Hadoop, Clustering and Cloud Computing expert

    Armenia - Last active: 5 days ago - Tests: 5 - Portfolio: 4

    I'm 12 years experienced Linux Administrator. I'm professional in: Design, planning and deployment of Hadoop clusters, high available Linux web farms, NoSQL clusters (Riak, Cassandra, Couchbase, CouchDB). Design and deployments of public/private cloud infrastructures. Linux Networking & Security Concepts. Design, deployment and administration of multi node web farms. Linux Clustering and H-A ,Service level load balancing and clustering Linux services (WEB,MAIL,PROXY,DNS,LDAP,SAMBA etc) OS security concepts, Monitoring tools (Nagios, Munin, Ossec, SNMP etc) Bash scripting MySQL Administration, Server optimization Configuration and optimization of JVM`s and Java Application Servers Virtualization solutions (VMWare, XEN, CITRIX etc) And more !

    Associated with: NetAngelS

    $33.33 /hr
    3,496 hours
    4.96
  7. Elena Chernovalova

    Elena Chernovalova Agency Contractor

    Professional Graphic Designer - websites, UI, logos and iPhone apps

    Ukraine - Last active: 1 month ago - Tests: 1 - Portfolio: 28

    What I do is graphic design for: - websites - logo and brand identity - iPhone apps - print design It's been almost 9 years now since I've got into graphic design and web development, but there hasn't been a day that I didn't learn anything new. I always keep track of the modern trends and try to broaden my vision. In my free time I do photography and vidiography which helps a lot in getting some extra inspiration for work. But what is most important in being a designer to me is always remember who you create the design for. So my clients and their dreams remain the top priority to me! While graphic design is now my main objective, I also have experience in Flash, HTML and CSS which helps me understand full development process and perform a better quality product. Hope you'll find my skills useful!

    Associated with: Avril Bird Agency

    $33.33 /hr
    3,670 hours
    4.96
  8. Manoj Singh

    Manoj Singh Agency Contractor

    Moodle Expert and Advanced PHP/MySQL/HTML/CSS/Javascript-Developer

    India - Last active: 9 days ago - Tests: 7 - Portfolio: 12

    - I've been programming custom web applications for over 5 years. - Have extensive experience working with PHP/MYSQL - HTML/CSS and produce code that is standards compliant and cross-browser compatible. -My area of expertise: -Moodle -OpenCart -PHP, MySQL -HTML, CSS, JavaScript -XML, JSON -WordPress, Joomla -Zen Cart, Oscommerce -CodeIgniter -Linux - A major component to successful project is proper and accurate communication. That's why, I am always available at skype, MSN, etc throughout the life cycle of the project.

    Groups: AWeber, Kohana

    Associated with: BitKea Technologies

    $35.00 /hr
    338 hours
    4.78
  9. Gurinder Singh

    Gurinder Singh Agency Contractor

    HTML5 & PHP Developer (12+ Years Experience)

    India - Last active: 20 days ago - Tests: 3 - Portfolio: 2

    With 12+ years of experience in web development. I write W3C valid, Semantic and super clean HTML5/CSS. I do make layouts responsive with or without popular frameworks using mobile first approach. I have very good experience in WCAG 2.0 AA & Section 508 Compliance, Page Speed Performance, and Schema Microdata. If you really care about quality work, I would be happy working with you. http://gurinder.me/resume.pdf 1. PSD to HTML5 (Flat $50 per page price for Fixed Width and $75 for Responsive Designs) 2. Customized CMS and E-Commerce Solutions

    Associated with: Zanetine

    $44.00 /hr
    125 hours
    4.89
  10. Casian N.

    Casian N. Agency Contractor

    Expert in MS Office programs, VB programming.

    Romania - Last active: 1 month ago - Tests: 10 - Portfolio: 10

    Over the last 5 years, I have developed a wide range of Excel and Access based reports and automation tool that are used WW in one of the biggest IT companies on the market. My core competency lies in complete E2E development of automated tools that improve productivity and management reporting, and I am seeking opportunities to build similar tools from ground up for you or your business. I also have some experience in the following areas: Visual Studio, Training development in Adobe Captivate, Adobe PDF from creation and data consolidation, software design and testing.

    Associated with: Wzkid's office

    $30.00 /hr
    704 hours
    4.97