Profile image of karlheinz
@karlheinz
Member since July 29, 2010
4 Recommendations

karlheinz

Online Offline
I am a developer with more than 10 years of experience. My skills include JavaScript (jQuery, AngularJS, Angular 2+, Node.js, D3.js, Google Maps API, Leaflet, OpenLayers, Overpass API, ArcGIS Javascript API, ArcGIS REST API, Mapbox GL JS API), HTML/CSS, PHP (Laravel, Yii, Slim, Drupal, WordPress), NoSQL (MongoDB, CouchDB, PouchDB), SQL (MySQL, MS SQL, PostgreSQL), GIS (PostGIS, pgRouting, ArcGIS, QGIS). I also have experience with C#, C/C++, Swift. I am interested in projects related to maps, cartography, gis, geospatial analysis, geolocation and data visualization.
$40 USD/hr
92 reviews
6.7
  • 100%Jobs Completed
  • 100%On Budget
  • 99%On Time
  • 13%Repeat Hire Rate

Portfolio

Recent Reviews

Experience

Web Developer, Senior Web Developer, Team Leader

Nov 2005 - Dec 2014 (9 years)

Initially developed websites and then managed team working for EPAC Technologies ([login to view URL]). Implemented redmine, scrum, tdd with phpunit and selenium, code review with phabricator, continuous integration with jenkins, phing, php code sniffer, php mess detector, php copy/paste detector.

Software Developer, Web Developer

Jan 2000 - Oct 2005 (5 years)

Developed shopping websites (php, mysql); name matching program based on an n-gram algorithm (c#); qr-code barcode generator (javascript); website to control business trips, tickets, hotel booking, visas and passports ([login to view URL], mssql server); website for admin section of a credit scoring calculation module (jsp, oracle); cd burning application and download manager (visual c++, starburn sdk)

Education

Bachelor's Degree in Computational and Applied Mathematics

1994 - 1999 (5 years)

Qualifications

MongoDB Certified Developer, Associate Level (2014)

MongoDB

[login to view URL]

Professional Scrum Master I (2014)

Scrum.org

[login to view URL]

Zend Certified PHP Engineer (2016)

Zend

[login to view URL]

Fundamentals of GIS (2016)

Coursera

Fundamentals of GIS by University of California, Davis on Coursera. Certificate earned on March 22, 2016

GIS Data Formats, Design and Quality (2016)

Coursera

GIS Data Formats, Design and Quality by University of California, Davis on Coursera. Certificate earned on August 14, 2016

Geospatial and Environmental Analysis (2016)

Coursera

Geospatial and Environmental Analysis by University of California, Davis on Coursera. Certificate earned on August 28, 2016.

Imagery, Automation, and Applications (2018)

Coursera

Imagery, Automation, and Applications by University of California, Davis on Coursera. Certificate earned at Wednesday, August 15, 2018

Certifications

  • US English Level 1
    98%
  • UK English 1
    88%
  • Google Maps API 1
    80%

Verifications

  • Facebook Connected
  • Preferred Freelancer
  • Payment Verified
  • Phone Verified
  • Identity Verified
  • Email Verified

My Top Skills

Browse Similar Freelancers