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Konstantin S.

Konstantin S.

Software developer

Russia - Last active: 18 hours ago - Tests: 8 - Portfolio: 13

8+ years of experience as software engineer. I have been involved in a wide range of different projects mainly with Microsoft development stack. I have participated in many projects in different areas starting from bank software and ending with applications for small business automation. Last few years I'm developing web solutions for automation of business processes using C# and ASP.NET MVC or Java with Play! Framework with various front end frameworks (e.g. jQuery, AngularJS, KnockoutJS, Typescript etc)

$45.00 /hr
7,502 hours
0.00
Rogerio R.

Rogerio R.

Hardware/Firmware/Software Engineer

Portugal - Last active: 1 day 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
54 hours
0.00
Raymond Doran

Raymond Doran

Senior Software Consultant

United States - Last active: 21 days 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
Dan F.

Dan F.

Full-Stack Developer

United States - Last active: 3 days ago - Tests: 1

I’m a Pennsylvania-based full-stack web developer, so I can implement and integrate your frontend and your backend. Between my degree in Computer Science and Business, employment history, and side projects, I have about 3 years of experience in the areas of: • JavaScript with the jQuery and Backbone frameworks • PHP both stand-alone and with the CodeIgniter and Symfony2 frameworks • Java for both desktop applications and website backends using Tomcat • Databases including ElasticSearch (a NoSQL data store), MySQL, and Oracle • HTML and CSS • Social integration (Facebook Connect, etc.) To learn more about me, you can check out some open-source code that I’ve written on GitHub (https://github.com/danfinnie/) or view the specifics of past work experiences on my resume (http://danfinnie.com/resume) I’m a straight-shooter, no-nonsense type, so get in touch and we’ll see if I’m the right person for you. If I am, great! If I’m not, I’ll let you know and give you some tips on what to search for to find the right guy or gal.

$55.56 /hr
104 hours
0.00
Adrian C.

Adrian C.

iPhone Developer / RoR Developer

United States - Last active: 9 days ago - Tests: 2

Software developer with over 10 years of experience. I have been part of every stage of software development from idea to app store. My IOS experience spans across many built in iphone frameworks including maps, audio, video, photo processing, networking, you name it as well as other 3rd party libraries. I have apps in the app store. I can take a design and turn it into reality. Will do everything professionally. I also have experience building apis using rails, postgres, mysql.

$100.00 /hr
52 hours
0.00
Ratnavel PS

Ratnavel PS

ROR\Java developer, EDI, Application Integration 7...

United States - Last active: 2 months ago - Tests: 2 - Portfolio: 2

Over the last 7 years, I'm doing processing EDI files, enterprise application integrating and had developed a wide range of websites using HMTL, RoR, and MySQL including sites for startup companies and small businesses. My core competency lies in complete end-end management of a development project, and I am seeking opportunities to build EDI solutions\websites from the ground up for you or your business. I also have some experience in the following areas: SQL, Ajax, OOP, and software design and testing. I have completed "HIPAA Privacy & Security Training for Business Associates"

$50.00 /hr
243 hours
0.00
Felix Mondelo

Felix Mondelo

Software Engineer

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

Specialist in BizTalk Server solutions, since 2005, MCTS in Biztalk Server 2004 and Biztalk Server 2006, also MCSD in .NET. 9 year experience in Biztalk projects (Biztalk Server 2004, Biztalk Server 2006, Biztalk Server 2006 R2, Biztalk Server 2009, Biztalk Server 2010 and BizTalk Server 2013). My tech blog: http://felixmondelo.blogspot.com/

$44.44 /hr
154 hours
0.00
Rahat Sabri

Rahat Sabri

AWS, Spring,JSF,Angularjs,Html5,Css3,Net,Hibernate

Pakistan - Last active: 11 days ago - Tests: 2

Over the last 8 years, I have developed websites using HTML, CSS, JavaScript, JSP/Servlet, Struts, Spring, Hibernate, and MySQL, SQL Server, Oracle 10g,11g. I am an outstanding Java/Web Developer with experience in all phase of the software development life cycle, from requirement analysis and design to implementation, testing and maintenance. I am seeking opportunities to build websites from the ground up for you or your business. SUMMARY OF QUALIFICATIONS - Good understanding of Object-Oriented Design and Programming. Experience in full product lifecycle. - Experience in using Java, including JSP, Servlet, Spring, Hibernate, and JUnit test. - Experience in ANT, SVN, Eclipse, and Apache Tomcat. - Experience in MySQL, JFreeChart, AWT/Swing, JavaScript/JQuery. HTML, CSS, and XML. - Operating Systems: Linux, Windows, and UNIX. - Strong learning and problem solving abilities. Good team worker. I have been developing web application since a while so I have had exposure to evolution of the web technologies that started from synchronous request/response and then evolution of ajax XmhttpRequest object and then a variety of ajax tools and frameworks like Prime faces, Rich Faces, JQuery and many others. And now in the current era we are moving towards pure JS front end frameworks like Ext JS, Angular JS, Node JS. Therefore I believe that I can develop and design any web application with current trends and technologies.

$33.33 /hr
1,170 hours
0.00
Muhammad Saad

Muhammad Saad

Software Engineer

Pakistan - Last active: 13 days ago - Tests: 1

7+ years building client/server, web-based application and infrastructures.  Architected, designed and built solutions using Microsoft, Java and Open Source tools. Led development of complete suites of products including Desktop and Web platform. Developed high volume transaction application. I have an expertise in : Asp.net C# , Ext.net, Ext JS, Java, PHP, AJAX, JQuery and open source software integration.

$30.00 /hr
960 hours
0.00
Lorenzo Bianconi

Lorenzo Bianconi

Linux kernel Sw Engineer

Italy - Last active: 1 month ago - Tests: 3 - Portfolio: 6

I am a telecommunication engineer with several year experience in software design and development especially on embedded devices. I'm a C/C++/Java developer; my area of expertise mainly focus on Linux kernel development. I am involved in the open source community; my name can be found in Linus Torvalds git: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git&a=search&h=HEAD&st=commit&s=Lorenzo+Bianconi. I am interested in the source code development for general purpose/embedded systems. Some code snippets can be found at https://github.com/LorenzoBianconi Device driver/Linux kernel programming: - Linux TCP/IP stack - Linux USB stack - Linux Mac80211 stack - WiFi driver: ath9k, ath5k, b43, MadWifi, rtlwifi - Ethernet driver: ag7240, ag71xx, natsemi, via rhine - Linux SPI/I2C stack Embedded systems: - architectures: x86, MIPS, PIC16, ATmega328 - distribution/software: OpneWRT, Click Modular router - Android Microcontroller programming: - PIC - Arduino Programming languages: - OO programming languages: C/C++, Java - scripting programming languages: Bash, Awk, Sed, PHP, OTCL - Makefile programming - GUI developing using Qt-Qwt/Swing library - Matlab - GIT/SVN/CVS versioning system Specialties: linux programming, embedded system, networking, wireless

$33.33 /hr
52 hours
0.00