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Flag of Venezuela Caracas, Venezuela
Member since August 23, 2002
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## BIO Full Stack System Engineer with 20 years experience developing custom solutions for Telecom, Tourism, Booking , Marketing & Petroleum companies in multi-user, high-avaliability and web environments. Extensive knowledge in Web (PHP, Javascript, Bootstrap, JQuery, .NET), Payment gateways and Industrial Automation (HMI, Modbus), IoT (remote sensing, prototypes and firmware) and hardware control including Arduino, PLC, ESP32/ESP8266 , C++, sensors & pneumatics control. ##CERTIFICATIONS * Microsoft Certified Professional. * CMM certified on Software Requirements Management, Testing, Software Configuration Management & Software Quality Assurance. * SAP BusinessWarehouse certified. #LANGUAGES * Spanish (native) & English as second language . Actually learning Italian. #SECURITY * All work is strictly confidential, and code is delivered tested & documented. * Software developed using latest security practices/patches. * Avaliable to sign any NDA agreement ## EXPERIENCE * Full stack Web developer (backend expert) : PHP, ASP/HTML & Javascript , .Net , API/Json , Jquery, JSON/API and Bootstrap * E-Commerce Payment gateways developed for WooCommerce, Opencart & Magento , worked with NMI, [login to view URL] and Paypal. * C++, Arduino / PLC / ESP32 / ESP8266 / TTGO / Heltec * Industrial automation: sensors, HMI & software control, RS485 / RS232 / Modbus / HMI * Software testings & translations (localizations) * Client/desktop developer .Net (Vb.Net , C#) * Database developer: SQL Server , MariaDB & MySQL (also worked with Firebird & MongoDB) #TOOLS * Worked with Time Doctor, Slack, VS Code, Visual Studio, Arduino IDE, Atmel Studio and many others. #CUSTOMERS * 120 customers on 5 countries (USA, Spain, Venezuela, Chile & India), from simple single user up to millons-users solutions.
$25 USD/hr
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Recent Reviews

  • image of Paul Bogdan I. Simple Support Chat PHP $260.00 USD

    “Excellent freelancer to work with. Completed the project in time with very high quality. Thank you so much!”

  • image of Udaya Pratap Singh B. PHP Expert [Sealed]

    “great job a+++++ loved to work with him will work again!”


JavaScript & PHP Developer

May 2020 - Aug 2020 (3 months)

Develop backoffice integration , automate workflow and upgrade some new features, including: mail scraping, api integrations, database performance and usability.

Core developer

Aug 2018 - Apr 2020 (1 year)

Design and develop first working prototype of Locha Mesh device using ESP32/Lora radios.


System Engineer

1991 - 1996 (5 years)


Microsoft Certified Professional (2011)


Microsoft Certified Professional on Windows Server

CMM level 2 (2010)

Software Engineering Institute / Carneggie Mellon University

Certified level 2 on Requirements, QA, SCM

SAP BW (2012)


SAP Business Warehouse certified


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