Top Upwork Freelancers

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  1. Andrius R.

    Andrius R.

    Expert automated tools developer

    Lithuania - Last active: 29 days ago - Tests: 5 - Portfolio: 2

    I'm a professional developer working more than 17 years on enterprise desktop and web applications, scripts and tools. My passion - web services (APIs), automated scripts and business logic layer working with complex databases. I prefer C/C++/C# programming languages and MySql/SQLite databases, but I have much experience working with other languages and tools (PHP, Objective-C, Javascript, WCF, SharePoint, HTML, CSS).

    $30.00 /hr
    306 hours
    5.00
  2. Liam Zdenek

    Liam Zdenek

    Consultant - Optimization - Security - PHP - MySQL - Linux

    United States - Last active: 25 days ago - Tests: 9 - Portfolio: 8

    I have notable experience and expertise optimizing web applications, and was instrumental in designing and optimizing a website that was in the top 50 websites with millions of hits every hour. I have worked on the entire stack: everything from front-end javascript, to backend applications written in PHP, Node.js, or Golang. See my oDesk Tests section. I have achieved, among others: * PHP: First Place * Javascript: Top 20% * Unix: Top 10% * Perl: Top 30% I specifically have experience with: * PHP (including Yii, Slim, Silex, and Symfony) * Golang * MySQL/PostgreSQL, including optimization * Redis, MongoDB, and other NoSQL databases * Linux (as both a desktop and a server) * Advertising * Video Streaming * Imagemagick (image compositing and effects) * eCommerce * Paypal, FedEx, Authorize.net, and other third party APIs * Biological data (Fasta, Uniprot, PDB, etc.)

    $120.00 /hr
    829 hours
    5.00
  3. Ryan Wilfong

    Ryan Wilfong

    Web Designer & Developer

    United States - Last active: 29 days ago - Tests: 2 - Portfolio: 1

    I am a 100% full-time freelancer specializing in creative and efficient designs that work on all devices/platforms. I work with HTML, CSS, PHP, jQuery, MySQL and all Adobe CC apps. Custom WordPressed solutions with enhanced functionality are my main focus. I use a design/build approach to increase efficiency and decrease development time and costs. Please feel free to invite me to interview on your project. I'm always looking for new opportunities.

    $66.67 /hr
    206 hours
    5.00
  4. Álvaro Carballo García

    Álvaro Carballo García

    Senior Programmer & Numerical Modeller

    Spain - Last active: 13 days ago - Tests: 4 - Portfolio: 5

    My name is Alvaro (nickname: varocarbas) and I am a senior programmer (+7 years), who has participated in a wide variety of projects involving custom software development and numerical modelling. I have recently reopened my 1-person company: Custom Solvers 2.0. My favourite programming languages are: - Desktop-based: C# & VB.NET (mainly Winforms); VBA (MS Office Macros) & VB6; Java and other C-based languages; FORTRAN. - Web-based: PHP & JavaScript; ASP.NET (C# & VB.NET). Customsolvers.com 2.0 references: - About me (varocarbas): http://customsolvers.com/en/pages/varocarbas_com/local/about/. - About Custom Solvers 2.0: http://customsolvers.com/en/pages/company/basic_information/. - Principles: http://customsolvers.com/en/pages/company/principles/. Mainly interested in fixed-price projects over $1000. NOTE: this was one of the freelancer-network profiles (although not precisely the most important one) which was associated with the previous version of my 1-person company (trendingIT/Custom Solvers). In 2015, I tried to create a new profile for Custom Solvers 2.0, but UpWork didn't allow me to do so (even though I proposed them different alternatives, logically by avoiding the deletion of this old account. And I certainly don't like unreasonable inflexibility...). In summary: Custom Solvers 2.0 will also be using this profile.

    $50.00 /hr
    76 hours
    4.97
  5. Bruno Martins

    Bruno Martins

    Senior Android Developer

    Norway - Last active: 26 days ago - Tests: 9 - Portfolio: 5

    Very motivated and determined young man with a taste for Science. Most of my career focus as been on Android Development. I have a lot of experience working for major international corporations and building serious, solid apps for big commercial purposes. Main Skills : - Android SDK & NDK - JAVA and Java Native Interface ( C / C++ ) - PHP, Mysql, JavaScript, Jquery, Doctrine, Zend Framework. - iOS SDK I'm looking for good business relations and partnerships and work together to build good, solid and efficient applications.

    $55.56 /hr
    701 hours
    5.00
  6. Tim Van Boxtel

    Tim Van Boxtel

    Engineer

    Canada - Last active: 5 days ago - Tests: 7

    A skilled technophile with experience in many aspects of hardware and software. Sotware: Web Application Development utilizing Flask and Django REST Based API Skilled Python developer Website Development - PHP, HTML5, CSS3, Javascript, jQuery Database Query, SQL, Cypher, Hardware: Electronic Circuit Design. Schematic - PCB I take great care in the quality of my work and forward my rigour and passion onwards

    $61.11 /hr
    414 hours
    5.00
  7. Jerry Rd

    Jerry Rd

    Data Scientist/ DataMining Expert/ AlgorithmResearch&Implementation

    China - Last active: 10 days ago - Tests: 5

    I have a master degree of probability and statistics.. I am a R guru. I have 6+ years experience of using R/SAS for statistical analysis and data mining/machine learning. I love my work as statistical algorithm research and implementation. And I am a hard working people. I have done projects in several industries such as Web Research/ Web Application/ Marking/ Financial Strategy/ Medical/ Commercial/ Sports industry. Also I am familiar with C/Perl/Python/Mysql/PosegreSQL/Latex/Javascript. I like to solve problems for my client, please feel free to contact me if you are interested in my skill set. Look forward to hearing from you!

    $33.33 /hr
    379 hours
    4.99
  8. Egils Grikis

    Egils Grikis

    Graphic Designer

    United Kingdom - Last active: 13 days ago - Tests: 12 - Portfolio: 3

    I am a Graphic Designer/Creative Artworker with more than 10 years of experience in printed media. I am passionate about design, typography and, in particular, Mac systems. I am excellent in Adobe Creative Suite CS4/CS5/CS6/CC (Indesign, Illustrator, Acrobat, and Photoshop.) Brainbench Certified Master User in Adobe InDesign CS5.5. Transcript ID#: 327612. Date: 2013-06-11. Scored higher than 97% of all previous test takers. I am also, if necessary, expert user in QuarkXPress. I speak more than 7 languages (fluent in English, Russian and Latvian). I feel this is a strong advantage. I have the ability to take a brief, successfully develop my designs laterally with creative vision, produce accurate print ready artwork or eBook, work within deadlines and project manage work through to completion.I have worked with major brands such as M&M;, Mars, Snickers, Whiskas, Lipton, Merrild, Sheba, Samsung, Tramontina, HP, L'Oreal, Lancome, Renault, Mazda, Jaguar and Adidas. My skillset includes creating corporate identities, logotypes, stationery, brochures, annual reports, magazines, catalogues, flyers, business cards, posters, and presentations for exhibitions and events and I have extensive experience working both B2B and B2C. Although, I have worked on the creative end of producing ads, I currently enjoy taking creative works and fastidiously preparing them for production. I feel that I have the advantage because I have worked on both ends of this process.

    $34.44 /hr
    120 hours
    4.96
  9. Tracy Finchum

    Tracy Finchum

    Instructional Designer/ E-Learning Specialist

    United States - Last active: 12 days ago - Tests: 2

    E-learning perfectly combines my artistic/ creative design talent with my passion for training, development, and education. Having worked with both Instructor Led Training and Computer Based Training in my past management experiences, it is a pleasure to be on the development/ design end of production. I feel it is imperative to tap into the knowledge of what drives motivating, successful education in training across industries. The trick is presenting it in a way that is interesting to the presentee and in turn effective in training. I earned my Psychology degree from The University of California, San Diego with an emphasis on Development & Education, and a minor in Visual Arts. I consider myself fortunate to have continued to develop both areas of my passion: working with people and the arts. I have spent over 10 years in staff development, building effective and efficient teams through my roles in management. While putting a special focus on driving individual strengths and positive working environments. My experience has led me to a proficient understanding of sales, customer service, revenue management, staff development, and creative thinking. My artistic repertoire includes such experience as: Custom mural design, Advertising, Jewelry design, fabrication, and course outline/instruction, PowerPoint Development & Design, Articulate Storyline Development. I am detail oriented and enjoy challenging myself to learn new skills, develop, and grow.

    $41.67 /hr
    1,312 hours
    4.88
  10. Michelle Dias

    Michelle Dias

    Professional Book Editor

    United States - Last active: 1 month ago - Tests: 6 - Portfolio: 8

    I enjoy open discussions with writers, providing detailed feedback and that second set of “eyes” that we all need for our stories. As a member of the Editorial Freelancers Association, and with more than nine years of proven editorial success, I know my stuff. I have flexed my creative muscles, high level of organization and a keen eye for detail to help aspiring and experienced authors from around the world reach their publishing dreams. If you're looking for more than just an editor, someone to partner with you as a true manuscript consultant on your road to publication, I'd love to hear from you. Visit my website for more information and to view my blog: www.mjbookeditor.com

    $35.00 /hr
    162 hours
    5.00