Andrés Villarreal

face

Staff Engineer

I'm a pragmatic Staff Software Engineer, quick to learn and adapt, always using the best tool for the current challenge.

Staff Engineer

I'm a pragmatic Staff Software Engineer, quick to learn and adapt, always using the best tool for the current challenge.

CV

Personal Information

Name
Andrés Villarreal Cordero
Address
Berlin, Germany
Email
andres@villarreal.co.cr
Languages
  • Spanish (mother tongue)
  • English (advanced)
  • German (A2)

I'm a pragmatic Staff Software Engineer, quick to learn and adapt, always using the best tool for the current challenge. I also make music and interactive websites.

Andrés he / him / his cis-male KaeruCT Website

Professional Experience

Nelly Solutions: 2023 - current

  • Authored RFCs and drove adoption of developer tooling and engineering guidelines across multiple teams.
  • Improved developer experience by streamlining onboarding, CI/CD pipelines, and local development workflows.
  • Collaborated cross-functionally with 5+ teams on infrastructure migrations, testing strategy, and technical documentation.
  • Delivered time-critical features and migrations, balancing quality with business deadlines.
  • Fostered a culture of quality through code reviews, pairing sessions, and mentoring engineers.

Rolls-Royce Solutions Berlin: 2020 - 2023

  • Led development on the user interface used to control energy storage systems.
  • Development of in-house tool to manage software and configuration for energy storage systems.

HelloFresh: 2018 - 2020

  • Optimized an e-commerce funnel making heavy use of A/B testing.
  • Implemented an ultra-performant landing page framework that led to increases in user conversion.
  • Mentored interns and junior engineers.

SecureLink: 2014 - 2018

  • Maintained an enterprise software application.
  • Designed and implemented new features.
  • Improved the stability of our existing codebase by creating automated tests and refactoring.
  • Documented existing software and processes to facilitate knowledge sharing with team mates and new hires.
  • Modernized the application's frontend by introducing tools like NPM into our workflow.
  • Designed and developed an internal dashboard to view customer usage information.

Growth Acceleration Partners: 2012 - 2014

  • Designed, developed, and maintained web applications that made use of the LAMP stack.

Academic Preparation

UCenfotec: 2011 - 2017

Software Development Associate's Degree

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