Software Engineer
2016 - PRESENTFreelance Work- Created and deployed smart contracts on the Ethereum network where thousands of users interacted with. Built non-fungible tokens as well as decentralized finance dapps.
- Built large-scale decentralized applications. Managed a team of eight developers to deliver a fast implementation of software features.
- Hired, coached, and reviewed the performance of eight software engineers in a project which delivered the fast implementation of software features.
Technologies: Test-driven Development (TDD), React, Ethereum, Smart Contracts, Ethereum Smart Contracts, Node.js, Vue, SolidityResearcher and Full-stack Web Developer
2014 - 2015Alexander von Humboldt Foundation - German Chancellor Fellowship- Built custom posting, upvoting, and comment systems.
- Created educational platforms where German universities can post their online courses.
- Used Geocoder to detect user location.
- Reworked software into a Sinatra application deployed on Heroku.
Technologies: Ember.js, Ruby on Rails (RoR)Full-stack Web Developer
2014 - 2014Wizard Development- Created and maintained startup products using Ruby on Rails and Ember.js.
- Assisted with the database schema architecture.
- Integrated the Github API to receive push notifications of commit activity.
- Used the native HTML5 video element to play videos.
- Utilized the HTML5 Video API to create an annotation system for adding notes to cue points in the video, similar to SoundCloud comments.
- Implemented a testing framework (Rspec and Capybara) in client projects.
- Built custom posting, upvoting, and comment systems from scratch in Ruby on Rails.
Technologies: Compass, Sass, Ember.js, Ruby on Rails (RoR)Full-stack Web Developer
2013 - 2014NYC Web Development Fellowship- Applied full-stack web development practices and stacks on projects, including but not limited to: JavaScript, Angular, Ruby, Rails, Sinatra, SQL, databases, system operations, HTML/CSS, and APIs.
- Collaborated with teams using Agile software development and test-driven development practices.
- Created a social media social visualization data visualization tool for a NYC-based interior design startup.
Technologies: CSS, HTML, Sass, Angular, SQL, Sinatra, Ruby on Rails (RoR), JavaScript, RubyDeveloper
2010 - 2013Creative Magenta- Developed web applications for clients in Chile, Brazil, USA, and Great Britain.
Technologies: HTML, CSS, PHP, JavaScript, Ruby
Gustavo Guimaraes
Software Developer in Berlin, Germany
Member since December 11, 2014
Gustavo is a full-stack web developer. A lifelong learner, he enjoys finding solutions for real-world problems through the use of technology. He is an expert blockchain engineer. His writing has helped hundreds of developers getting into the Ethereum smart contract ecosystem.
Gustavo is now available for hire
Portfolio
- Freelance WorkTest-driven Development (TDD), React, Ethereum, Smart Contracts...
- Alexander von Humboldt Foundation - German Chancellor FellowshipEmber.js, Ruby on Rails (RoR)
- Wizard DevelopmentCompass, Sass, Ember.js, Ruby on Rails (RoR)
Experience
- Ruby 4 years
- JavaScript 3 years
- Behavior-driven Development (BDD) 3 years
- Test-driven Development (TDD) 3 years
- Agile Software Development 3 years
- Ruby on Rails (RoR) 3 years
- AngularJS 2 years
- React 1 year
Availability
Part-time
Preferred Environment
Linux, MacOS, Atom, Shell, Git
The most amazing...
...profitable piece of software I’ve written is a smart contract that raised USD $20 millions for a client.
Employment
Experience
- Open HPI
Massive Open Online Course platform created at the Hasso Plattner Institute in Germany. It allows anywhere in the world to take computer science courses over the internet.
- One Monthhttps://onemonth.com/
A revenue data visualization tool. I created the tool and maintained and added new tests to business logic classes.
- Neighborgoods Brooklyn
The first of its kind household goods library with a wide range of goods to borrow and convenient options for receiving and returning items.
Skills
Languages
Sass, Ruby, JavaScript, PHP, CSS, HTML, Solidity, SQLFrameworks
Sinatra, Ruby on Rails (RoR), AngularJS, Ember.js, Compass, AngularTools
Atom, Sublime Text 3, GitHub, Vim Text Editor, Git, ShellParadigms
Agile Software Development, Test-driven Development (TDD), Behavior-driven Development (BDD), ScrumOther
Communication, Smart Contracts, Ethereum Smart ContractsLibraries/APIs
Social APIs, jQuery, Node.js, Vue, React, Chart.jsPlatforms
Linux, Heroku, MacOS, Ethereum, BlockchainStorage
PostgreSQL, Amazon S3 (AWS S3), MySQLi
Education
- Bachelor's Degree in Liberal Arts (Elective focus in Economics, Politics, Foreign Languages, and Computer Science)2006 - 2010Lawrence University - Appleton, WI, USA
Certifications
- Ethereum DeveloperDECEMBER 2016 - PRESENTB9 labs
