Rubén Guerrero Sánchez

Senior Software Engineer

Software Engineer with +9 years of experience in web development. Worked on multiple types of companies, multiple types of business, and use cases. Mostly working on product-oriented companies.

A big field of knowledge in terms of web technologies, but mostly focused on Frontend and Backend related technologies.

Key Skills

  • Open-mindedness
  • Creativity
  • Humbleness
  • Accountability
  • Hands-on
  • Project management
  • Attention to detail

Tech Skills

  • React
  • NodeJS
  • Javascript
  • Frontend tooling
  • UI/UX Skills
  • Testing
  • Software Architecture
  • Django

Work Experience

Ontruck - Senior Staff Software Engineer
Jun. 2016 - Now

Working as a Senior Staff Software Engineer in one of the vertical teams. Always working close to product and business teams, understanding the business requirements, and applying technology to solve these problems.

Also, I am leading the Frontend Guild, organizing the different initiatives and sessions, with the objective of empowering the quality and good practices inside the Guild.

I am employee #5 of Ontruck, so I have been working since almost the beginning of the company. It is been a lot of changes in terms of the company structure, way of working, business requirements, etc. Always been opened and well adapted to these changes.

Tech used: React, React Hooks, Redux, Python - Frontend Engineer
Feb. 2014 - Jun. 2016 is the leading real estate portal in Spain. I worked on the revamp of almost all the public website, refactoring and recreating almost all the pages from scratch.

Also, I worked on building the internal applications of the company. I was mainly focused on Frontend, but also entering on the Backend part if it was needed.

Tech used: JSP, Java, Javascript, HTML5, CSS3, jQuery, Dojo...

Redbility - Frontend Engineer
Dic. 2013 - Feb. 2014

Redbility is a design agency. I was working on creating websites for big companies.

The designs were very demanding in terms of interactions and user experience, with pixel-perfect adjustments.

Tech used: Pixel-perfect, HTML5, CSS3, jQuery, Javascript...

Peoplecall - Frontend Engineer
Jul. 2012 - Dic. 2013

Peoplecall is a telco company. I was working on building the internal websites and applications of the company.

I worked closely with the design team, defining and building the interactions on the different products.

  • I built some landing pages to capture clients.
  • I collaborated in a Phonegap application to make VoiceIP calls.
  • I was in charge of measuring the conversions in the websites.
  • I collaborated in the development of internal applications.

Tech used: Responsive design, Jekyll, CSS, HTML5, Pure Javascript, Phonegap...

Eternitic - Frontend Engineer
Apr. 2012 - Jul. 2012

Eternitic was a pure marketing company. I learned a lot of marketing concepts during these months.

I was the only person in charge of the tech part.

I was mostly creating websites focused on marketing campaigns, also working on SEO optimizations, and applying improvements and modifications to old websites.

Tech used: Joomla (yes, Joomla), jQuery, HTML5, CSS from the scratch...

Binocean - Frontend Developer
Nov. 2011 - Apr. 2012

This was my first contracted work. I was working as a Frontend Developer creating websites and applications for small and medium companies.

Binocean was a small company of three employees. I was really focused on the Frontend part, also playing around with Backend at some points.

Here I learned how to create WordPress templates and plugins. Who knows what the future can hold...

Tech used: Wordpress, HTML5, jQuery, CSS from the scratch, Django...

Freelance Developer
2008 - Now

I have been working as a Freelance Developer for almost the beginning of my career. My mind is every time looking for new side projects and businesses. I sometimes work on websites for small companies, that I do in my free time.