Imej profil ranvli
Penanda Costa Rica San Jose, Costa Rica
Ahli semenjak 21 Jun 2008
0 Cadangan


Dalam Talian Luar Talian
I am passionate about software’s not just my career, it’s my hobby. I have been a very successful web, desktop & mobile developer for over 15 years with .net technologies and java, working for several companies all over the world. Additionally to development of new apps, a lot of the work I do is on-going maintenance of existing apps. I always aim to maintain a long-term relationship with my clients. I work well alone or within a team environment and enjoy working with my colleagues. I'm fluent in english and spanish. At a glance: Very creative, fast and more than 15 years of experience. Desktop, web and mobile dev. Several IDEs, languages, software suites expertise. Skills: git, .net,, c#, vb, javascript, jquery, android sdk, firebase, google apis, biometrics, barcode, agile scrum, sql, twilio, BLE, xml, json, iis, windows server, wcf, wpf, winforms, webforms, mvc, webapi, linq, EF, volley, html5, css3, visual studio vsts, and the list goes on...
$33 USD/hr
36 ulasan
  • 100%Kerja Diselesai
  • 100%Mengikut Bajet
  • 100%Tepat Pada Masa
  • 25%Kadar Ulang Upah

Item Portfolio

Ulasan Terkini

  • Imej Ignacio G. Sistema de compras - Módulo: aprobación de facturas - Backend -- 2 $21968.00 USD

    “Outstanding software & systems engineering professional, excellent communication skills, well known by his ability to deliver projects on time. Recommended for big projects and duties that require complex developments from scratch. Randall led the planning, development and implementation of one of our largest projects. Definitely we would hire Randall again without any doubt.”

  • Imej Alberto Ejecución de software en servidor con interfaz para usuarios €108.00 EUR

    “El mejor profesional a efectos de ingeniería de software, sistemas y programación que he encontrado. Altamente recomendable para proyectos que requieran desarrollos complejos y en los que Randall lidere la planificación, desarrollo y ejecución final. ¡Calidad suprema!”

  • Imej David F. Project for Randall V. $25009.79 USD

    “Eager to ensure all aspects of the project are met.”

  • Imej Nathalia M. Project for Randall V. -- 18/10/16 11:08:51 $40.00 USD

    “Randall is a rockstar! It has been a pleasure working with him.”

  • Imej Michael H. Project for Randall L. -- 18/01/24 09:19:37 $50.00 USD

    “Great and fast”

  • Imej Michael H. Project for Randall L. $200.00 USD

    “Always suberb job and done fast”



2005 - 2010 (5 years)

Licentiate degree

2013 - 2016 (3 years)


A+ (2012)


CompTIA A+

Cloud (2012)


CompTIA Cloud+

Green IT (2014)


CompTIA Green IT Computing


  • Preferred Freelancer Program SLA
  • US English Level 1


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