IxDF Certificate of Completion

The Practical Guide to Usability

IxDF Course Certificate awarded to Ruben Badillo for completing the "The Practical Guide to Usability" course
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The Interaction Design Foundation (IxDF) hereby certifies that the IxDF Course Certificate (ID #91f319e4-25de-4bcd-b46a-b57e04046c5e) has been conferred upon Ruben Badillo in formal recognition of completing evidence-based curricula taught by industry leaders, to the standards established by the IxDF Educational Codex. View Course Curriculum.

This document serves as the official record of the above credential. Third parties may reference the certificate ID to verify its authenticity. The Interaction Design Foundation maintains permanent records of all credentials issued.

Verified Competencies Demonstrated by Ruben Badillo

By completing this curriculum to the standards of the IxDF Educational Codex, Ruben Badillo has demonstrated mastery of how to:

  • Design and evaluate user-centered digital products that are easy and efficient to use.

  • Apply established interface design guidelines, including Shneiderman's Eight Golden Rules and Nielsen and Molich's ten heuristics, to build intuitive, frustration-free products.

  • Define and measure usability across its core dimensions to set clear quality targets and benchmark designs.

  • Plan, conduct, and report usability tests with real users, from recruitment and consent through to actionable findings.

  • Run heuristic evaluations to surface usability problems quickly and cost-effectively.

  • Run cognitive walkthroughs to catch task-level usability issues before development.

  • Design around the limits of human memory and attention to reduce cognitive load and user error.

  • Design for simplicity and clear navigation so users reach their goals with minimal effort.

  • Create research-grounded personas that keep design decisions focused on real user needs.

  • Identify all the users and stakeholders a product affects and weigh their influence on the design.

  • Establish genuine user needs, including the requirements users cannot articulate themselves.

  • Generate and select among alternative design solutions under real-world budget, technology, and user constraints.

  • Integrate user-centered design with Agile and other software lifecycle models to ship products iteratively.

  • Design for emotion, applying Don Norman's visceral, behavioral, and reflective levels to increase engagement and satisfaction.

  • Apply experiential design principles to deliver meaningful experiences rather than just functional features.

  • IxDF 
Educational Partner
    IxDF Educational Partner distinction: Awarded for outstanding educational impact
  • IxDF Connected Professional
    IxDF Connected Professional distinction: Attended 10 or more IxDF Meetups
  • IxDF Top 10%
 Course Taker
    IxDF Top 10% Course Taker distinction: Completed an IxDF course with a score of 90%
  • IxDF 
Community Explorer
    IxDF Community Explorer distinction: Attended 3 IxDF Meetups
  • More distinctions
    +4

Cali, Colombia

Ruben Badillo

Student

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Certificates Earned
by Ruben Badillo

IxDF Course Certificates are awarded to Ruben Badillo in formal recognition of completing evidence-based curricula taught by industry leaders, to the standards established by the IxDF Educational Codex.

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