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David Stephens

David Stephens

Data Analyst

United Kingdom - Tests: 2 - Portfolio: 3

Hello, I am a Data Analyst with 5+ years professional experience with a background in scientific research including publishing peer-reviewed papers. I have BSc (1st class honours) in Geographical Information Systems and Science. I am most interested in contracts that would take advantage of my R skills for data analysis and visualisation. Including: geospatial analysis, statistical modelling, data mining or building shiny data apps. A summary of my skills and experience: - Diverse types of research including geospatial analysis, statistical modelling, image analysis, GIS. - Daily use of R with experience of packages such as: dplyr, ggplot2, caret, sp, rgdal, gstat. - Developing interactive data tools using R’s ‘Shiny’ framework - Also have experience scripting in Python and SQL Statisitcs: - Linear regression, principal component analysis, t-tests. - Machine learning algorithms (random forest, neural networks) - Cluster Analysis (unsupervised classification) - Non-parametric significance testing (monte-carlo simulations) - Geo-statistical Interpolation (kriging) Other: - Image Analysis: Object-based image segmentation - Textural analysis for pattern recognition - Working with PostgreSQL/postGIS databases - Software: ESRI ArcGIS; Erdas Image; GRASS; QGIS; eCognition; SPSS.

$40.00 /hr
3 hours

Sergiu Rosu

Sergiu Rosu

Senior Software Developer

Romania - Tests: 2 - Portfolio: 5

I always liked programming and I followed this direction since high school, I started from small applications in Turbo Pascal about 15 years ago and worked my way up to mobile applications for iOS and Android, I worked with many tools and lots of frameworks so I have a very vast experience about all applications and environments, I created complete products containing desktop, mobile and web based applications, I created entire systems and designed huge applications with complex database structures, that's why now I'm working both as a developer and as a consultant for mobile applications and web based applications. You can see my full CV here :

$25.56 /hr
7 hours

Afanasy Argunov

Afanasy Argunov

MEAN Stack Developer

Russia - Tests: 1 - Portfolio: 1

Hi, My name is Afanasy Argunov. Worked for 1.5 year as node.js backend-only developer. Now I switched my efforts to fullstack development using MEAN Stack. I believe that my strengths are Creativeness and Punctuality. In works I always speak with the clients so I can understand their needs. For me the main points of work are client's needs and deadline I use trello, git(github, bitbucket), slack, skype for collaboration. MEAN, grunt, bower, AWS, heroku help me to get success.

$22.22 /hr
5 hours

m cannon Agency Contractor

mobile / server development

United States

Professional developer with experience in mobile applications for iOS and android, live broadcasting, streaming audio/video solutions, server side development, IPTV, IPCAM, advanced communication work , former employers include GM and Ford motor company (USA), US and European Patents pending

$55.56 /hr
2,488 hours

Aman K.

Aman K. Agency Contractor

Software Tester/Quality Assurance


Experience of more than 4 and half years in field of Software Quality Assurance, Manual Testing. Software Testing Highlights: 1. Created test plans, decided testing strategies from project specification documents. 2. Written test cases for unit level, integration testing and regression testing. 3. Documentation of deviation found in results. 4. Helped Quality Test Manager preparing master test plan. 5. Test environment setup and configuration of hardware. 6. Database testing and verifying integrity constraint. 7. Manually implemented Test Cases as per plan and compliance verification. 8. Performed functional testing of web based applications. 9. Communicated the issues to developers and management or stakeholders. 10.Effective defect tracking and reporting to improve communications and reduce delay. 11.Active member of testing team.

$10.00 /hr
1,695 hours

Denis Mordvin

Denis Mordvin Agency Contractor

AngularJs, Python developer

Russia - Tests: 5 - Portfolio: 6

Skilled Python/JavaScript full-stack web developer. PhD in Computer Science (information security). As a lead developer, successfully fulfilled a number of web projects. Also, worked as project manager and QA. Technological backgroud: OS: Windows, Linux Languages: С, C++, C#, Python, JavaScript General technologies: OOP, UML, patterns, IoC, ORM, unit testing and mock objects, TDD, BDD, web-development, XML, Ajax, HTML, CSS Databases: MySQL, PostGreSQL, Sqlite3, MongoDB Libraries and frameworks (back-end): Django, Flask Libraries and frameworks (front-end): Angular.js, jQuery, Underscore.js, Lodash.js, , Google Maps CVS: GIT , SVN, Mercurial

$27.78 /hr
163 hours

Wilson P.

Wilson P. Agency Contractor

C/C++/OpenGL/Network Programmer

India - Tests: 3 - Portfolio: 5

I am a C/C++ programmer with fair experience in Java and HTML/CSS/Javascript. I specialize in algorithm intensive game physics and ai, desktop applications using wxWidgets, machine learning and C++ based web development targetted for ASPs. Over past 2 years I have 1) Developed from scratch the physics and character maker for a 2D massively multiplayer game. 2) Developed Opensource web application framework in C++ which implements the fastcgi protocol and is designed to solve the c10k problem. 3) GUI for several desktop trading applications using wxWidgets.

$22.22 /hr
2,883 hours

Alexander Velichko

Alexander Velichko Agency Contractor

Automation testing, java developer

Russia - Tests: 2

Hi, I am an expert in the automated testing. Wide experience of manual / automated testing. Able to work in a team, non-conflicting, artist, purposeful, ambitious, energetic. • Total 3+ Years of Automated Testing experience. • I have Experience in automating web applications using Selenium Webdriver and building Automation Framework from scratch. Developed Selenium Webdriver Framework in JAVA with PageObjects design pattern using PageFactory, Maven as build automation tool and Cucumber-JVM (BDD) as testing framework. • I have Experience in automating desktop applications using IBM RFT and building Automation Framework from scratch. My skills: Automated testing: Selenium, IBM Rational Functional Tester, Fitnesse, TestNG, Cucumber. Languages: Java, JavaScript, HTML, CSS, XML, SQL. Version Control System: Git, ClearCase, SVN. Build tool: Maven, Ant. Positive/negative tests. Bug tracking system: Jira, Jazz, BitBucket. Automation Frameworks development using combination of: - Selenium/WebDriver; - Data-driven Selenium tests with external Excel, XML and CSV-based data. - BDD; - TestNG, JUnit; - Page Object; - FitNesse; - Cucumber; - Robot, AutoIt & Sikuli; - Jenkins; - Maven.

$16.67 /hr
422 hours

Kevin Day

Kevin Day Agency Contractor


Australia - Tests: 3 - Portfolio: 4

Providing custom software design and development services we have been involved with various types of commercial software systems, and various sizes. Databases worked with include Paradox (BDE), Firebird-SQL, NexusDB, Interbase and MySQL. Third party tools used include, Crystal Reports, Digital Metaphors ReportBuilder , FastReports, Devexpress, DevART, TMS, JVCL, mORMot, tiOPF. My varied experience includes but not limited to software in the telecommunications, retail, wholesale distribution and manufacturing industries. The software I have developed or maintained included customer management, point-of-sale, stock control, purchasing, billing, accounts receivable, accounts payable, cash-book and general ledger accounts. I have approximately 20 years of Delphi development experience from Delphi 1 through to Delphi XE4. Additionally, I have some experience with PHP and html.

$28.00 /hr
300 hours

Aakash O.

Aakash O. Agency Contractor

Technical Manager

Nepal - Tests: 8 - Portfolio: 5

Hi, Greetings from Institute Of Information Development (IID) Pvt Ltd !! I am writing on behalf of IID Pvt. Ltd ( a Cisco Premier Partner in Kathmandu, Nepal. We work as a System/Network Integrator and deal with Software/Web development, BPO and IT (LAN/WAN)support. We would like to explore an opportunity to work together for your IT/BPO outsourcing requirements. You may choose us for any of your software/network outsourcing duties to reduce your cost through whatever means possible. We would like to work as a local partner for IT services, Software/Web development/ BPO/LAN/WAN Technologies from Nepal. I take this opportunity to introduce ourselves. Institute Of Information Development (IID) Pvt. Ltd at brief: We are a leading Network Solution Provider specializing in network solutions on WAN/LAN issues, BPO- support services, Software and Hardware in Nepal. Our strength lies in the integration of different areas of technology. All technologies are backed up by a comprehensive set of professional services, using our Managed Network Service Centre. We have also partnered with multiple vendors for support and sales. We have been providing services for international vendors in Nepal as a Local partner on 24x7x4 SLA. Solution-set Offerings: With reference to Solutions-set Offering from IID Pvt Ltd . We will be more than glad to offer a world class IID experience. Broadly we have identified 3 areas of services offering, viz. 1) IT services- LAN/WAN Design, Implement and Support 2) Software/Web development and oursourcing jobs We hope that you would find the above in tune with some of your forthcoming requirements. We re-iterate that we would be glad to be called to offer our services for you and your organisation. Many Thanks, Warm Regards Aakash

$26.67 /hr
28 hours