Sergio Tapia Gutierrez

Sergio Tapia Gutierrez

Friendly bilingual Rails/EmberJS/Go Developer | Lean Startup

Santa Cruz de la Sierra, Bolivia



What's the difference?

UX/Software Engineer that primarily works with Ruby on Rails 4, EmberJS and Go.

I'm an ex-pat from Boston, living in the heart of South America for the past 9 years, in Bolivia.

My main talents lie in Ruby on Rails development. I take pride in building fast, insanely optimised websites using the latest proven tools in the Rails world including Sentry, NewRelic-rpm, Bullet and RSpec.

I can also flex EmberJS to build well written, tested client-side applications with an API backend (typi…


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Work History & Feedback

US Based Development Team Leader

“Sergio is overall a great team leader and development resource. He is detailed in his approach to projects and extremely patient when dealing with stressful situations. He is easy to talk to and discuss projects with and very flexible in his approach and style. I would recommend him and his team highly.”
1 hrs @ $37.00/hr
Earned $19

CSS, ROR Frontend Development

“Originally from Boston, Sergio is a native english speaking developer with a very pleasant disposition. Delivered very high quality Rails code. I'm looking forward to working with him again soon!”
6 hrs @ $44.44/hr
Earned $267

Ruby on Rails site needs Front-End Skinning

“Upon seeing the specs for the project, Sergio expressed excitement, asked pointed questions about specific components, and got to work. He delivered quality work. When he was challenged by a particular part of the project, Sergio would respond by diving deeper, working harder, and asking for help when he needed it. I believe our project was more intricate than originally anticipated, and that caused us to miss some deadlines… but I think the responsibility for understanding the scope of the project was shared among us, and I appreciate that Sergio stuck with the project. He is a talented developer and an excellent communicator, and I would hire him again in a heartbeat.”
Fixed Price $556

Google Data Rails app- MySQL to Google Docs Spreadsheet integration

“It was a pleasure to work with Sergio, and hope to work with him again soon. Despite a slightly stronger skill set with Microsoft and dot-net development, Sergio's Ruby on Rails skills allowed him to develop our Google API integration with no hitches. It was also a great first experience with oDesk. Was apprehensive at first as it doesn't have an escrow or arbitration system like Vworker. But the lack of those things make for less overhead and smoother work with trusted vendors.”
Fixed Price $408

Keyword translation - Spanish

“Job completed perfectly within minutes.”
Fixed Price $1

Translate a word document from Portuguese to English

“Great and and honest! thank you”
Fixed Price $16
Tests Taken
Name Percentile Score

Dot Net Fundamentals Test


Dot Net Fundamentals Test


English Spelling Test (U.S. Version)


English To Spanish Translation Skills Test


HTML 4.01 Test