Senior Software Engineer

• Jan 2023 - Present

Senior Software Engineer

• Jul 2022 - Dec 2022

Ruby on Rails • ELM • Heroku • Docker • Snowflake • Honeycomb - Major contribution to launching the Sell Your Car service in Germany and the Auction model in the UK. - Led discovery tasks to provide reliable information and metrics to define new developments. - Replaced deprecated or non-standardised tools from the system architecture. - Organised social activities to gather and share knowledge across the company, including internal tech talks, workshops, retrospectives, and team-building activities. Show less

Senior Backend Ruby Engineer

• May 2020 - Jun 2022

Ruby on Rails • PostgreSQL • MongoDB • Heroku • GitHub Actions As a senior engineer and backend team lead, I'm actively participating in the decision-making related to product development, collaborating with the customers and our product team to generate a valuable plan. I guide the backend team towards the agile framework, where: - We now add value daily thanks to small releases. - We increased the quality of the legacy and new code using TDD. - We mitigated knowledge silos using pair and mob programming and writing clear documentation. - I performed the successful onboarding and mentoring of a junior hire using intensive pair programming. Show less

Fullstack engineer

• Oct 2019 - Apr 2020

Ruby on Rails • Java • AWSWorking on the restock algorithm:- Design and development of an algorithm that processes big data to help our partner make their daily restock more profitable.- Using Java stack and S3 as source of truth persistence.- Managed to reduce the cost of running the algorithm from 24 hours to just a few minutes.- Made the internal process visible through relevant logs.

RoR Developer

• Dec 2018 - Apr 2020

Working on the data processing application:- Developed an API to allow customers to integrate with us instead of developing an adapter for each new partner.- Improved the legacy code's maintainability and quality through extreme programming practices.

RoR Developer

• May 2018 - Nov 2018

Ruby on Rails • Heroku • Twilio • Shopify • Active Admin From the first day, I took full responsibility for an AI project that connected customers to their banks, significantly increasing conversion and profit from each interaction. The project included an Active Admin interface to manage the call center extensions and an AI server that interacted with the customers using natural language through Twilio. Not only I developed this feature from scratch, but also I defined the MVP and following iterations based on recurrent conversations with the client. Show less

Ruby Developer

• Oct 2016 - Apr 2018

Ruby on Rails • Amazon Web Services • MongoDB • PostgreSQL Worked within a multidisciplinary squad strongly using extreme programming practices and was involved in product definition. We developed an API that allowed our customers to quickly integrate with our platform. Delivered high-quality, valuable updates through small iterations. As an agile development advocate, I helped the rest of the engineering team improve code quality while increasing delivery frequency. Ruby on Rails • Amazon Web Services • MongoDB • PostgreSQL Worked within a multidisciplinary squad strongly using extreme programming practices and was involved in product definition. We developed an API that allowed our customers to quickly integrate with our platform. Delivered high-quality, valuable updates through small iterations. As an agile development advocate, I helped the rest of the engineering team improve code quality while increasing delivery frequency.

JS and Phaser developer

• Jun 2016 - Oct 2016

Development of a video game for English learning through Vaughan methodology. Development of a video game for English learning through Vaughan methodology.

VB.Net Developer

• Nov 2014 - Jun 2016

C# developer for multi-assurance system. Migration of Flowmap application, from VB6 to VB.Net, for the Universiteit Utrecht. Information and downloads: http://flowmap.geo.uu.nl/ Collaboration at the development of a management software for co insurance written in C#.Net with Oracle 10g Database. Sporadic collaboration in other projects: - OTIB (C#): http://www.otibskillsmanager.nl/ - Uw Huismeester (PHP): https://www.uwhuismeesterinuitvoering.nl/ C# developer for multi-assurance system. Migration of Flowmap application, from VB6 to VB.Net, for the Universiteit Utrecht. Information and downloads: http://flowmap.geo.uu.nl/ Collaboration at the development of a management software for co insurance written in C#.Net with Oracle 10g Database. Sporadic collaboration in other projects: - OTIB (C#): http://www.otibskillsmanager.nl/ - Uw Huismeester (PHP): https://www.uwhuismeesterinuitvoering.nl/

C# Developer

• Nov 2013 - Nov 2014

Collaborator at the development of a C# and WPF written software that controls reproductive life cycle of transgenic seeds. Collaborator at a management software for internal purposes. Written in C#. Collaborator at the development of a C# and WPF written software that controls reproductive life cycle of transgenic seeds. Collaborator at a management software for internal purposes. Written in C#.

Web Developer and Online PR

• Jan 2013 - Jun 2014

District 59, Division H Club: # 2796330, Vitoria-Gasteiz Design and development of the first website for the club: http://tmvitoria.webcindario.com/en/index.php Developed in HTML, PHP and Javascript, using CSS and Photoshop for graphic design. Design and implementation of the MySQL relational database. It includes a web application for members by which they can book their roles for each meeting, and a ranking where they can compare their progress with other members'. It also has multilingual support. Management of the second club's website: http://2796330.toastmastersclubs.org/ Creation and management of the club's Facebook page: https://www.facebook.com/pages/Toastmasters-Vitoria-Gasteiz/223888454444069?ref=hl for broadcast on social networks. Show less

Google Glass Developer

• Mar 2014 - Mar 2014

Participant at the Google Glass Hackathon, organized by Intelygenz. Contestant at the BBVA Challenge. We (our three member team) developed an application that allows user to input confidential information (numeric password) into the device. It displays a list of numbers that can be scrolled nodding the head, and selected tapping on the glass’ temple. Article and interview at Tek’n’Life (in Spanish): http://www.teknlife.com/reportaje/intelygenz-organiza-su-primera-hackatoncon-google-glass/ Show less

Android Developer

• Jan 2013 - Dec 2013

Development of an Android Application. It displays lottery results on mobile devices, and allows users to check if their ticket has been awarded. Includes remote connection to a MySQL Database, SQLite local storage, beautiful animations and a Barcode scanner. Try it for free: https://play.google.com/store/apps/details?id=com.me.Game&hl=es Development of an Android Application. It displays lottery results on mobile devices, and allows users to check if their ticket has been awarded. Includes remote connection to a MySQL Database, SQLite local storage, beautiful animations and a Barcode scanner. Try it for free: https://play.google.com/store/apps/details?id=com.me.Game&hl=es

Freelance Translator

• Jul 2013 - Sep 2013

Translation from English to Spanish of the user manuals of an application dedicated to Wind Farms management. Translation from English to Spanish of the user manuals of an application dedicated to Wind Farms management.

Web Developer

• Apr 2013 - Sep 2013

Development of my own website. Written in PHP and HTML, using CSS and Photoshop for graphic design. Meant to promote my services as freelance software developer. Includes my portfolio and social network links. It may not be updated, even so, if you feel curious: http://merilab.webcindario.com Development of my own website. Written in PHP and HTML, using CSS and Photoshop for graphic design. Meant to promote my services as freelance software developer. Includes my portfolio and social network links. It may not be updated, even so, if you feel curious: http://merilab.webcindario.com

Web Application Developer

• Apr 2013 - Aug 2013

Development of a web application written in PHP and JavaScript (jQuery) with an Oracle 10g Database. The application allows citizens to pay their bills through a POS gateway. Includes email notifications. Try the beta version*: http://www.vinaros.es/tpv/pago/ *The server is maintained by the Town Hall. Development of a web application written in PHP and JavaScript (jQuery) with an Oracle 10g Database. The application allows citizens to pay their bills through a POS gateway. Includes email notifications. Try the beta version*: http://www.vinaros.es/tpv/pago/ *The server is maintained by the Town Hall.

Web Developer

• Apr 2012 - Aug 2012

Development of the website of the History of cartography museum for the Vitoria-Gasteiz Engineering College. Written in HTML, PHP and CSS. Check it: http://merilab.webcindario.com/proyecto_topografia/ Development of the website of the History of cartography museum for the Vitoria-Gasteiz Engineering College. Written in HTML, PHP and CSS. Check it: http://merilab.webcindario.com/proyecto_topografia/

Python Developer and Junior DBA

• Mar 2012 - Jun 2012

Oracle incidences management on Unix server. Development of a Python written program that allows the statistical control of the incidences of each department, including the graphics generation and pdf export. Download the code (untested): http://merilab.webcindario.com/imagenes/cv/aplicaciones/incidencias.zip Oracle incidences management on Unix server. Development of a Python written program that allows the statistical control of the incidences of each department, including the graphics generation and pdf export. Download the code (untested): http://merilab.webcindario.com/imagenes/cv/aplicaciones/incidencias.zip

ASP.NET Developer

• Mar 2010 - Aug 2010

Development of a web service written in VB.NET (ASP.NET), using an Oracle 10g database. This software shows the user a layered map indicating the risk areas on the Netherlands. Check it: http://nederland.risicokaart.nl/ Development of a web service written in VB.NET (ASP.NET), using an Oracle 10g database. This software shows the user a layered map indicating the risk areas on the Netherlands. Check it: http://nederland.risicokaart.nl/