Jesus Dario, Developer in Seville, Spain

Jesus Dario

Lean Startups Developer

Seville, Spain
Toptal Member Since
October 29, 2015

Jesus Dario is co-founder of Yeti Smart Home and He believes that software is just a means toward a great product, yet analyzes software anatomy itself deeply. Culture over processes. He has consistently led software teams towards business goals, and he is an open source contributor and technical writer.

Jesus is available for hire
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Yeti Smart Home
TypeScript, Segment, Firebase, React Native
MATLAB, C, C++, Bash, Ruby on Rails (RoR), Ruby, MongoDB, Angular, Node.js


Seville, Spain



Preferred Environment

Sublime Text, Zsh, MacOS

The most amazing...

...thing I've done is created the best rated and most popular smart home app—Yeti.

Work Experience

2017 - PRESENT

CTO and Co-founder

Yeti Smart Home
  • Pivoted from a B2B open source support model to a commercially available iOS and Android App.
  • Managed the transition to the new working framework and technologies.
  • Led a team of six engineers in the production of software and created a culture to consistently reach our goals.
  • Planned and managed the scale from hundreds of users to dozens of thousands, with hundreds of thousands of IoT devices connected.
  • Developed the product and developer operations assistant software with Docker, npm, bash scripting, our cloud providers, and additional services.
Technologies: TypeScript, Segment, Firebase, React Native
2016 - PRESENT

Engineering Mentor

  • Led people from different backgrounds to start developing and successfully start a career.
  • Met with students on a weekly basis for a short time to review their progress towards their goal.
  • Actively supported, motivated, and taught how to overcome technical interviews and whiteboards.
  • Evaluated progress by reviewing capstone projects.
  • Held open Q&As to shed light on open source contribution and industry specific tooling.
Technologies: JavaScript
2014 - PRESENT


  • Created an app marketplace that implemented version control through Git using Node.js, MongoDB, and some shell script.
  • Designed an OS to run Node.js apps that is installable in routers with minimum footprint, with high-level user interface and fine-grained app launching.
  • Implemented an abstraction REST API for CRUD IoT resources in Node.js, SQLite, and a Python and ES6 wrapper for it.
  • Launched several open source projects with continuous integration and delivery, code coverage, and functional tests.
  • Created a lightweight SDK terminal client to automate IoT app development.
Technologies: MATLAB, C, C++, Bash, Ruby on Rails (RoR), Ruby, MongoDB, Angular, Node.js
2014 - 2015

Intern Researcher

  • Compiled C++ code with MATLAB as the target.
  • Implemented several filters for GPU processing images using CUDA.
  • Used MATLAB to prototype different algorithms to implement and benchmark their results.
  • Wrote several tutorials and guides and published the results internally within the university research network.
  • Learned CMake to compile together OpenCV with CUDA with several C++ libraries.
  • Used OpenCV to read the image stream and pass them to CUDA filters.
Technologies: OpenCV, CMake, Bash, MATLAB, NVIDIA CUDA, C, C++

A software tool to analyze developer productivity

Yeti Smart Home

The most successful smart home application of 2018

Y Combinator Startup School

I was a founder of Y Combinator Startup School.


Smart Home startup. Netbeast is an open source software that allows IoT devices to talk with each other regardless of its brand and technology.

Wayra Deutschland

A short-time collaboration with Wayra Startup accelerator to allow them to call to action, publish events, and show their current portfolio. Built on Angular + WordPress so their staff could publish and make contributions.
Image of Toptal's Quick and Practical JavaScript Cheat Sheet: ES6 and Beyond publication

Toptal's Quick and Practical JavaScript Cheat Sheet: ES6 and Beyond
Image of Programming Visually with Node-RED: Wiring Up the Internet of Things with Ease publication

Programming Visually with Node-RED: Wiring Up the Internet of Things with Ease



CSS, JavaScript, TypeScript, Java, SQL, C, Sass, C++, Go, PHP, Ruby, Bash, Objective-C


React Native, Express.js, Bootstrap 3, AngularJS, Angular, Ruby on Rails (RoR)


React Redux, Node.js, React, D3.js, OpenCV


Linux, MacOS, NVIDIA CUDA, Firebase, WordPress, Android


Lean Startups, SVG, Segment


MATLAB, Zsh, Sublime Text, CMake, Apache, NGINX


Scrum, Agile Software Development


SQLite, MongoDB, PostgreSQL, MySQL


2011 - 2015

Bachelor's Degree in Electrical Engineering

Universidad de Sevilla - Sevilla

2014 - 2014

Professional Degree in Language

Institut Catholique de Toulouse - Toulouse

2013 - 2014

Exchange Program as Part of My Bachelor's Degree in Electrical Engineering

Universidad Carlos III de Madrid - Madrid