Luis is available for hire
Hire LuisLuis Daher
Verified Expert in Engineering
Ruby on Rails Developer
Location
São Paulo - State of São Paulo, Brazil
Toptal Member Since
November 1, 2014
Luis is a professional developer who understands the importance of being responsible and proactive. Fond of Agile methodologies and scrum strategies, he is always focused on adding value to his team and projects. Luis is back-end oriented with a fair knowledge of front-end technologies, and has started expanding his skills by studying iOS and JavaScript frameworks such as AngularJS and Backbone.js.
Portfolio
Olook
MySQL, JavaScript, CSS, HTML, Ruby on Rails (RoR)
Mondia Media Group GmbH
JavaScript, CSS, HTML, MySQL, Java, Ruby on Rails (RoR)
BuscaPé
JavaScript, CSS, HTML, MySQL, Java
Experience
Availability
Part-time
Preferred Environment
Git, Atom, OS X
The most amazing...
...thing I've coded is a product comparison content API that enables the developers to profit as the apps they develop are used.
Work Experience
IT Manager
2012 - 2014
Olook
- Participated in the creation of a development team by conducting interviews and taking part in hiring decisions.
- Helped craft an integration API to establish a connection between the website and Braspag—a payment gateway—, increasing the company's per order profit considerably.
- Optimized the website, halving its response time by caching request data and minimizing database requests.
- Integrated CloudSearch, an Amazon cloud-based item search solution, with the site.
- Managed a small team of two Ruby on Rails and JavaScript full-stack developers and one front-end developer for six months.
- Led a team of four people to maintain the current operation and deliver a new payment gateway integration. Coached and reviewed the performance of full-stack and front-end developers.
- Acted as a scrum master and senior Ruby on Rails developer for one year and a half.
Technologies: MySQL, JavaScript, CSS, HTML, Ruby on Rails (RoR)
Senior Software Developer and Scrum Master
2010 - 2012
Mondia Media Group GmbH
- Participated as a scrum master on the development of Telcel’s mobile content portal (Latin America's biggest mobile carrier).
- Led a team to build a new 24/7 customer subscription platform which covers Web, WAP and SMS (currently getting 10,000 user subscriptions/day).
- Enhanced the former customer subscription solution environment by fine-tuning server configurations (receiving up to 500,000 daily requests per server).
Technologies: JavaScript, CSS, HTML, MySQL, Java, Ruby on Rails (RoR)
Software Developer
2008 - 2010
BuscaPé
- Architected the early versions of BuscaPé’s Developer API, which until 2010 was receiving up to four million requests per day.
- Helped remodel BuscaPé’s affiliate portal, called Lomadee, which is also integrated with large companies such as Walmart, Dell, and Apple.
- Helped conceptualize the API documentation and sample codes, assisting a strong and growing community of developers.
Technologies: JavaScript, CSS, HTML, MySQL, Java
Junior Software Developer
2006 - 2008
Telefonica
- Assembled a new service request solution, automating the former hand-made procedures and supporting all Telefónica covered cities in Brazil.
- Researched the existing GIS frameworks in order to create a map-oriented telecommunication item management system.
- Maintained the legacy telecommunication item management system used by more than 100 experienced engineers as a crucial monitoring tool.
Technologies: MySQL, CSS, HTML, Java
Experience
BuscaPé Developer Section
The Buscapé API was the solution found by the company to offer its product base and advertisers services for use in applications, websites, storefronts, banners, and plugins. Thinking about monetization for anyone who uses the API Buscapé model, two programs were created: CPC and CPA. Briefly, the API uses Buscapé CPC program in which the developer is paid for each click on links offers users give from their application.
Prime Numbers
This program prints a list of prime numbers from two to a given number. It accepts a text file as an argument, and the text file should contain one to several lines with one integer bigger than two per line.
Skills
Languages
Ruby, JavaScript, Java, HTML, CSS
Frameworks
Ruby on Rails (RoR), Bootstrap 3, AngularJS
Tools
RSpec, Eclipse IDE, Git
Paradigms
Agile Software Development, Scrum, Pair Programming
Platforms
MacOS, Windows, Linux, OS X
Storage
PL/SQL, PostgreSQL, MySQL, NoSQL, MongoDB, Redis
Libraries/APIs
Devise, Twitter API
Other
Development
Education
2014 - 2015
Master of Business Administration Degree in Digital Marketing
Escola Superior de Propaganda e Marketing - São Paulo, Brazil
2001 - 2006
Bachelor's Degree in Computer Science
Instituto Presbiteriano Mackenzie - São Paulo, Brazil
Certifications
JUNE 2011 - JUNE 2019
Certified Scrum Master
Scrum Alliance
Collaboration That Works
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