Top Upwork Freelancers

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  1. Denis V.

    Denis V.

    Web developer

    Russia - Last active: 28 days ago - Tests: 2

    Hello everyone, I'm an expert web developer with with over 9 years hands-on experience. I've build several projects as frontend engineer. Highly experienced in developing complex system to handle bulk data efficiently profoundly skilled in ASP.NET MVC, AngularJS, NodeJS. Ability to upgrade existing applications through coding and analyzing. I'm here to help you with my strong points to get your success.

    $30.00 /hr
    780 hours
    0.00
  2. Rob Wilkerson

    Rob Wilkerson

    United States - Last active: 3 days ago

    I am a development manager and engineer with nearly 15 years of experience designing, engineering and developing Internet solutions. That experience extends to building and leading intra- and international development teams and organizing those teams around an evolving set of tools, standards, practices and processes. Specialties: Web standards, application architecture, usability & user experience, distributed infrastructure, development process, development standards & practices, OS X, Linux, M/LAMP, Nginx, X/HTML, CSS, PHP, CakePHP, Javascript, jQuery, Node.js, Ruby, Rails, Compass/SASS, XML/XSLT, MySQL, Subversion, Git, Shell scripting (bash)

    $94.44 /hr
    540 hours
    0.00
  3. Haruko Huynh

    Haruko Huynh

    Graphic / Web Designer

    United States - Last active: 4 days ago - Portfolio: 1

    For 15 years, I have worked as a Graphics and Web Designer. I've done extensive work designing everything from CD jackets, poster boards, to magazine and book covers. For five of those years, I worked in my hometown of Tokyo Japan, under Tztom TODA design firm. I was also heavily involved in the design of www.rakuten.co.jp, the number one Internet eCommerce portal in Japan. My desire to experience and learn as much as I can lead me to America where I started designing websites. The San francisco Bay Area has been my home for the past 10 years and have enjoyed every moment of it. Most recently I've had the opportunity to design print materials for some of the fastest growing companies in the Bay Area. These print materials include folders, catalog sheets, business cards and even logos.

    $55.56 /hr
    1,684 hours
    0.00
  4. Rogerio R.

    Rogerio R.

    Hardware/Firmware/Software Engineer

    Portugal - Last active: 10 days ago

    I am a 40-year old electrical engineer with a passion for sophistication and innovation. I have a lot of experience in many areas, a result of both my professional career as well as my own personal projects. Detailed profile information can be found at http://profile.rilhas.com I can design, test, and manufacture hardware (including PCBs) using microcontrollers, FPGAs, USB, UART, I2C, and many more, and integrate them with computers, embedded systems, mains power, motors, various sensors, etc.. It is not uncommon for hardware projects in which I’m involved to incorporate both firmware and software, or even connect to the internet or with mobile phones. I have a lot of experience in the PC world, both as a user and as a developer. I have developed high density ISDN telephony application servers (IVRs) for the main Portuguese telecom operator, with an installed base of over 2000 channels, including a voice mail system complete with voice and text fault-proof database. I have developed a large number of computer systems, both servers and clients. My work with IVR's later included testing and using various ASR and TTS technologies (for automatic speech recognition and automatic speech synthesis from the major providers like Loquendo, Nuance, Philips), applied to various areas from the IVR system themselves (directory assistance, flight booking, and more), a help support system for the elderly (consisting of an emergency telephone help server for the national Red Cross), all the way to systems for the hearing impaired (integrating with JAWS screen reader, for example). I have worked with a team to develop a tool for airport management systems, where my contribution was the development of a complete graphics subsystem based on OpenGL, which is being used up to this date (more than 10 years later), due to its capabilities not having yet been surpassed by the competition. I've developed technology to analyze video images and detect a large number of situations, including FOD at an airport in Açores, intrusion detection, early fire warning systems (marketed as CICLOPE), fire prevention systems at PORTUCEL (one of the main producer of paper and other products), illegal car parking, subterranean bus parking, automatic lane management (and infraction detection) on the 25 de Abril Bridge, and many more. I also developed technology to monitor and track bird movements using radar data. A first version used the radar image, and a more recent version uses the raw radar data (captured using a high speed data acquisition system that I also developed specifically for the radars being used). Since this system requires the display of large amounts of data (images with 30+ MPix) I also developed the visualization component (based on OpenGL). I also have some experience in CAD modeling (owing mainly to the fact that I've owned a 3D printer for several years), with which I have created numerous models for small production runs of plastic objects, mainly to assist with electronics projects but which I have also used successfully to create inexpensive plastic connectors and other components for a company that manufactures and installs solar pool heating systems, including automated 2" valves. I’ve also created custom shaped plastic cookie cutters for my wife and toys for my son. :-) I've produced several promotional 3D videos for a few companies, and I also recorded and produced music albums for a number of artists. The systems I have developed in the past make use of (of have integrated with) a wide range of languages, systems, and technologies, including C, C++, C#, JAVA, J2ME, Android, Javascript, Ruby, PIC 10/12/16/24 assembly, i386 assembly, MMX/SSE2, Verilog, TCP/IP, UDP, OpenGL, USB, WiFi, Bluetooth, Raspberry Pi, BeagleBone Black, Windows, Linux, POTS, ISDN, ASR, TTS, among many others. Many of the projects I've worked on have included other people, and I have been the project manager on most of them. For the larger projects where I was not the project manager (like those involving airport security, for example) I was the team leader of the corresponding project component. Given my extensive experience with complex and innovative projects (where a solution is not always obvious from the start and a great deal of creativity is need as the project progresses), I have also developed good skills and intuition for preventing and detecting bugs, both at a code testing stage as well as (more importantly) at a design or specification stage. These skills have proven crucial over the years, and I think that the success of all the projects I worked on depended heavily on them.

    $40.00 /hr
    67 hours
    0.00
  5. Michael White

    Michael White

    Graphic Designer

    United States - Last active: 24 days ago - Tests: 3 - Portfolio: 2

    I have been working in the graphic arts field for almost twenty years I am proficient in all aspects of design and layout. I have designed books, magazines, newsletters, brochures, logos, frame-quality original artwork and more. I run the latest version of the Adobe Creative Suite on the computers in my studio and I am proficient in all programs contained within.

    $31.11 /hr
    108 hours
    0.00
  6. Ahmad Salahuddin

    Ahmad Salahuddin

    Serial Entrepreneur & Trainer

    Malaysia - Last active: 13 days ago - Tests: 2

    Over the last four years, I have founded, managed and supported small businesses in different industries such as hospitality, f&b, corporate training, publishing, social innovation, and healthcare. I specialise in helping micro and small businesses improve their marketing efforts, streamline their operations, and manage their human resources better. My core competency is in critically identifying and assessing key areas for growth while helping to develop a stronger strategic vision combined with an actionable business plan. I can also help in improving your presentation slide decks as I regularly design custom slides for my training (I use Keynote). Contact me if you are a small business owner or manager and would like to understand how to boost your business and accelerate its growth.

    $50.00 /hr
    259 hours
    0.00
  7. Kerstin Fricke

    Kerstin Fricke

    Germany - Last active: 17 days ago

    I work as a freelance translator and editor since 2001. As I have always been an avid gamer and as I also like board games, card games, tabletop games and especially role playing games / RPGs, I really enjoy working at game and entertainment projects. I am well versed in the terminology of all common platforms, and of course I have the corresponding reference material at hand. In the literary field I have translated numerous novels, comics and short stories, a role-playing rulebook for Warcraft, and several issues of different collector's series and I have also edited several novels.

    $51.11 /hr
    106 hours
    0.00
  8. Andrei Safronov

    Andrei Safronov

    Snr Embedded Software Engineer

    Russia - Last active: 4 days ago

    More than 11 years software engineering experience, broad range of computer expertise. More then 7 years firmware development for different embedded systems. Core language skills C, C++, Java, Assembler for different architectures(x86, ARM, MIPS, AVR, C51), VHDL, Verilog; Computer architectures: ARM, MIPS, PowerPC, x86. Microcontrollers: PIC24, PIC32, AVR, C51; Protocols: - Modbus communication protocol ; - I2C, SPI; - Etherbet; - RS485.

    $42.00 /hr
    154 hours
    0.00
  9. Stephan K.

    Stephan K.

    Graphic Artist

    Bulgaria - Last active: 10 days ago - Tests: 2

    Professional and Cool Graphic Design Services with a Personal Touch. Here is what you get: Work together with an experienced designer. No Blah! Blah! and minimum formalities; clear milestones, strict deadlines. Live online communication, you can refer to the project history anytime. Frequent updates - you always know what's happening. Less expenses to keep the service cheaper. Service Description - Logo and Brand Identity - Character Development (2D&3D) - 3D Visualizations - Illustrations - Web Design

    $35.00 /hr
    65 hours
    0.00
  10. Raymond Doran

    Raymond Doran

    Senior Software Consultant

    United States - Last active: 1 month ago - Tests: 1

    I am an experienced, motivated and detailed Software Architect / Engineer with a complete end-to-end understanding of the software development process. Over 17 years of professional experience in software development, technology support, and graphic arts. Software development skills include Rich Internet Applications and Web 2.0, Object Oriented Application Design (OOAD), including the use of the Unified Modeling Language (UML), SQL, JAVA (J2EE, Hibernate, Spring, Struts), JSP, ActionScript, PHP, EJB, C++, HTML, XML, BlueMartini, Design Patterns, and managing small development teams. The past 15 years of my career have been mainly focused on the Java family of technologies with a strong emphasis on distributed applications over the internet or corporate intranet. I have also spent the last 6 years with Flex and Actionscript front ends. The ability to speak comfortably in large groups, one on one with clients, or mentoring peers is a skill that I have been able to acquire as well.

    $105.56 /hr
    1,286 hours
    0.00