Sergio Tapia
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Sergio Tapia

Friendly bilingual Rails/EmberJS/Go Developer | Lean Startup


Santa Cruz de la Sierra, Bolivia


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 (typically using Rails). I also leverage Go to build highly concurrent, well-tested system services and backend processes. Experience deploying to Heroku, AWS, Rackspace, ... moreDigitalOcean. I leverage open source tools such as Capistrano to assist deploys. I invest heavily in research material and training books in order to keep up with current standards and emerging practices. All of this helps me be on the edge, making sure your software is built the best possible way using proven methods. You'll find I'm very approachable and will definitely let you know about any flaws I may see in your design requirements, my job here is to help you create great software and make your next project a success! less

Sergio Tapia has added 5 portfolio pieces. Create an account to review them.

Work History and Feedback

  • Feb 2015

    Wanted: Ruby On Rails Automated Testing Expert To Assess Existing Test Suite
    54 hours
    $50.00 / hr
    $2,700.00 earned

  • Feb 2015

    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 hour
    $37.00 / hr
    $18.50 earned

  • May 2014 - Jun 2014

    Senior Go Developer

    No feedback given

    4 hours

  • Apr 2014

    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 hours
    $44.44 / hr
    $266.64 earned

  • Oct 2013 - Nov 2013

    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.
    $555.56 earned
    Fixed Price

  • Apr 2013 - Jun 2013

    Enterprise System Development and Maintenance
    3 hours
    $20.00 / hr
    $56.67 earned

  • View More (5)

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Name Score (out of 5) Time to Complete
English To Spanish Translation Skills Test 4.90 Top 20% 12 mins
Dot Net Fundamentals Test 2.90 Above Average 11 mins
Dot Net Fundamentals Test 2.90 Above Average 12 mins
HTML 4.01 Test 3.50 Top 30% 12 mins
English Spelling Test (U.S. Version) 4.60 Above Average 13 mins

Work History

87% Job Success
2,337 hours worked
39 jobs


Less than 30 hrs/week

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