gayatri marikanti

Open source application consulting

hyderabad, India



What's the difference?

Over the last 12 years, I have been working with clients across the globe as a
consultant . I have vast exposure to C/C++ , Java/J2EE, Grails, Spring, Hibernate and Perl, UNIX, ORACLE, MySQL, PostegreSQL and PHP.

I have also have expertise in building web application based on angular js , backed by cloud platforms like etc.

Thanks to open source products out there.

I provide developement and support services for
open source products like jBillng, OpenRate, SugarCRM, vTiger etc


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Work History & Feedback

JBIlling development

“Han is excellent, very professional and methodical, that understands how to create a work flow and listens to the customer’s needs, all though he was paid in full when i found couple small issues that we did not see before, he came back and fix them immediately, no questions ask, that is professionalism.Defiantly will work with him in my future projects Thank you Han”
23 hrs @ $30.00/hr
Earned $802

WHMCS ClickBank Payment Gateway Module Development

“Excellent coding and communication through the whole project, will work with again on more projects!”
Fixed Price $83

Configuring Jbilling and its BRMS to work with Mssql server 2008 R2

“Good Developer”
64 hrs @ $15.00/hr
Earned $963

Open Source Billing & Provisioning integration - Telco

“Han was a great team member and resource for all things Jbilling. I would use him again in the future.”
356 hrs @ $11.11/hr
Earned $3,959

WHMCS / ClickBank Payment Gateway

No feedback given
Fixed Price $278

JBilling Expert

No feedback given
Fixed Price $11
Tests Taken
Name Percentile Score

C Programming Test


Unix Test


Upwork Readiness Test for Independent Contractors and Company Managers