Diego Lafuente Garcia, Developer in Palma de Mallorca, Spain
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Diego Lafuente Garcia

Verified Expert  in Engineering

Scalability Developer

Palma de Mallorca, Spain
Toptal Member Since
May 17, 2017

Diego has been a software engineer since he was 7. It wasn't legal to code for money then, so he stuck to building his own games in BASIC. He's worked with a ton of technologies including C, C++, Objective-C, Python, PHP or Go, but lately he's fallen in love with Node.js and he's trying to stay loyal to it. Diego can do both front and back-ends, but he feels more comfortable in the back. He's also an entrepreneur, a writer and a restless traveler



Preferred Environment

ITerm, Git, Visual Studio Code (VS Code), MacOS

The most amazing...

...project I've worked on is TaxiTime—a metabook of taxi services built from scratch by a very small team using exclusively JavaScript technologies.

Work Experience

Collaborator | Developer

2013 - PRESENT
Open Source Work
  • Collaborated with several open source projects in the Node.js community.
  • Built the scoring algorithms at the site PackageQuality.com.
  • Added a couple of methods in the JSEP npm library.
Technologies: Node.js

TaxiTime Technology Lead

2015 - 2017
  • Created a state of the art metabook for taxi services from scratch.
  • Acted as the tech lead of the project and main developer of the back-end part (Node.js).
  • Integrated more than 10 taxi suppliers in the system.
  • Built a hybrid app in Ionic.
  • Developed an admin panel in Angular.
  • Automated the testing and deployment of the system.
  • Built a complete authentication system.
  • Played the role of DBA for MongoDB and Redis.
Technologies: Redis, MongoDB, Angular, Ionic, Node.js

GuideGo Developer

2015 - 2015
  • Developed a full back-end in Node.js.
  • Implemented the integration with Hotelbeds' Transfer & Activities API.
  • Deployed a customized continuous deployment platform.
  • Worked as the database administrator for MongoDB and Redis.
  • Acted as the SCRUM master for the rest of the team.
Technologies: Redis, MongoDB, Node.js

TAB iOS SDK Developer

2014 - 2015
  • Developed the iOS SDK for the Activities Bank for Hotelbeds.
  • Used Mantle to build the SDK from the API.
  • Wrote Intensive unit and integration tests.
  • Built a demo app to assess that the SDK worked.
  • Wrote the docs and assisted partners to integrate with the system using the SDK.
Technologies: Cocoa Touch, Objective-C

iOS Developer

2014 - 2014
  • Developed features of the new LateRoom app for iOS.
  • Worked as part of an agile team in one of the best agencies in London (UsTwo).
Technologies: Cocoa Touch, Objective-C

Innovation Lab - Tech Lead

2013 - 2014
  • Built a team whose purpose was come up with innovative solutions for the business needs of Hotelbeds.
  • Developed an app to guide a user in a building using beacons.
  • Built a system to track kids in hotels using a smart bracelet and beacons.
  • Created a prototype to package holidays using the assets (hotels, activities, and transfers) available at Hotelbeds.
  • Developed a prototype to use smart bracelets for payments inside hotels and resorts.
Technologies: Titanium, Python, Objective-C, Redis, MongoDB, Node.js

External Contractor

2013 - 2013
Cecor SL
  • Developed an iOS app to measure level of noise in work environments.
  • Dealt with low level audio libraries to perform accurate measure of the noise levels.
Technologies: Cocoa Touch, Objective-C

External Contractor

2013 - 2013
  • Built an attribution system for this company dedicated to serving smart ads for mobile games and webs.
  • Developed an algorithm to match different device fingerprints and attribute sales to ad clicks.
Technologies: PHP

Founder | Product Manager

2011 - 2013
  • Founded and worked as a product manager of this startup that aimed to be a marketplace of tourist activities.
  • Developed the back-end of the system with a mix between PHP and Node.js.
  • Developed the front-end for the iOS app.
  • Acted as the database administrator for MongoDB and Memcached.
Technologies: Cocoa Touch, Objective-C, Memcached, MongoDB, PHP, Node.js

Founder | Developer

2010 - 2011
  • Built a system to detect tampered drinks in bars using crowd sourcing.
  • Developed fully the app in iOS.
  • Developed fully the back-end using Node.js and MongoDB.
Technologies: MongoDB, Cocoa Touch, Objective-C


A back-end and web to measure the quality of the NPM packages. I developed the algorithms to calculate the score that ultimately measures the quality of the project. I also solved issues when they were reported


This project has nothing to do with software development. It's about one of the things that I'm the most proud of. I am the founder of the first "accelerator of people" in Spain. We select 10 people each year and engage them in a program to maximize their impact in society.

JSEP Collaboration

Forked the repository and added a couple of functions that I needed. Sent a PR that was accepted,


TypeScript, JavaScript, Objective-C, PHP, Swift, Go, Python






MongoDB, NoSQL, Redis, Memcached


Performance, Scalability


Cocoa Touch, Angular, Ionic, Titanium


Git, ITerm


MacOS, iOS, Visual Studio Code (VS Code)

2016 - 2016

Certificate in M101JS: MongoDB for Node.js Developers

MongoDB University - Online

2016 - 2016

Certificate in M102: MongoDB for DBAs

MongoDB University - Online

2014 - 2014

Titanium Certified Expert in Titanium Framework

Appcelerator - London, UK

1993 - 1999

Industrial Engineer's Degree in Electronic, Automation, and Computer Science

Universidad Politécnica de Madrid - Madrid, Spain

Collaboration That Works

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