Hello, my name is Nelio Contrera and I am a

Professional Software Developer

I have been creating modern and responsive Web Applications, smartphone Apps and desktop software since 2003. Either if you need a website, an App, or you simply need help to install a software, you are in the right place, I am the person you are looking for.

This is what I do

Some customers know exactly what they want, others just have an idea, regardless what kind of customer you are I addapt to your characteristics and your work flow, I am here to help, and I get things done the way you want them done.

Desktop Software

I can create custom software for your business.

Web Development

I specialize in modern and responsive Web Applications.

App Development

I do both hybrid and native Android and iOS APPs.


I can be your IT guy and help you deal with the technical stuff.

My works

From static informational Websites, to complex back end systems, in over 12 years of experience as a Professional Software Developer I've created all kinds of software.

My Skills

I have experience with some of the most popular programming languages like C, C++, C#, Java, Python, Ruby and PHP. For Websites UI and UX I am well versed in HTML, HTML5, CSS, CSS3 and Javascript, TypeScript, ECMAScript 5 (ES5) and ECMAScript 6 (ES6). Javascript Frameworks like jQuery, Angular 1 and 2, Node.js, React and Ember are very familiar to me. And when it comes to relational DBMS Oracle, Microsoft SQL Server, Postgre and MySQL are familiar names. I have also worked on some projects with Mongo and some other NoSQL databases. Other commonly used technologies in Web development such as GIT, Doker, Swagger etc are also part of my stack. But my best skills are my hability to learn new technologies and my constant communication with the customers.

Reading Customers Minds








I'm available for freelance projects.

What my clients say

What makes me different than most freelance software developers out there is that I look beyond the project and I value the relationship that it creates between me and the customer. In more than 10 years and more than 500 projects I can count with the fingers of my hands the number of unsatisfied customers I've had.

“I would highly recommend Nelio. He made suggestions to improve the project. He kept me informed about his work progress, and completed all work on time. I am looking forward to working with him again. Thank you!!!”

Dr. Maia Farkas, University of South Florida

“Fantastic work - hopefully this will be the start of a great working relationship.”

AdSabTix, England

“Coder did excelent work grate communication thruout the project fast turnaround with grate work thank you”

Leapws, United States

“Outstanding work and communication. Thank you!”

Contact me

It doesn't matter the size of your project, or the technology it requires, I can help you, even if I couldn't do it myself I would help you find the right person to do it. Contact me, it's FREE!