Profile image of gitgis
Flag of Poland Szczecin, Poland
Member since August 3, 2011
4 Recommendations


Online Offline
* 12 years of PHP (Zend1, Symfony2, Doctrine2, Debug, Optimisation techniques) * 5 years of Java developement (Servlets, JSP, JDBC, JPA, Hibernate, JAX-WS, JAX-RS, JAXB, Jackson, Guice, Guava, Maven, Java concurrency) * HTML (JavaScript, jQuery, CSS3) * DB (MySQL, PostgreSQL, MongoDB) * GIS (Google Maps API, MapTP API, OpenLayer, PostGIS, MongoDB) * Other (GIT/SVN/CVS/Hg, Jenkins, Linux Admin, Facebook & Google Data APIs,) * Excelent problem solving skills * Quality and clean code oriented * Born to code
$50 USD/hr
13 reviews
  • 100%Jobs Completed
  • 100%On Budget
  • 100%On Time
  • 38%Repeat Hire Rate


Recent Reviews

  • image of Anon12345 MAIN SALES CRM $6998.00 USD

    “We love Greg! He's easy to communicate with & delivers what we want. He's completed 3 high quality products for us despite the only form of communication being email.”

  • image of lynx77 Create a layer on top of Google Maps which shows the direction of the sun at every chosen date - repost $2916.00 USD

    “Gitgis overdelivered on every point possible. Very flexible, very savvy. Great communication. Would hire him again and again and again.”

  • image of Anon12345 Minor changes to Junk CRM $300.00 USD

    “Greg is very easy to work with. Always willing to accommodate what we wanted. My employees are very happy with the final result.”

  • image of Anon12345 Customized Customer Relationship Management Database (Custom CRM) [Sealed]

    “It was a pleasure working with Greg. He helped us create a Customer Relationship Management software from scratch exactly to our specs.”

  • image of beyond88 Whatsapp Mass/Bulk sms software $1237.00 USD

    “One of the best freelancers we have worked with. Responsible in providing us a quick fix and patch when we need them, and communication is superb! Really patient when working with our requirements, and would definitely hire this person again.”

  • image of Djor Channel + program json files to wordpress posts $1065.00 USD

    “Greg did it a really great job! He is really easy and fast to communicate with and he also give excellent advise to make the project better. I hope to continue working with him.”


Master Degree

2004 - 2006 (2 years)

Engineer degree

1999 - 2002 (3 years)


M101J (2013)

The MongoDB Company

JSON, schema design, querying, insertion of data, indexing and working with language drivers.

M102 (2013)

The MongoDB Company

10gen's MongoDB for DBAs / Administrators


Introduction to Restlet

Introduction to Neo4J

API Driven Developement

MySQL optimisation techniques


  • US English Level 1


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