IxDF Certificate of Completion

Web Design for Usability

IxDF Course Certificate awarded to Daniel Peixoto for completing the "Web Design for Usability" course
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The Interaction Design Foundation (IxDF) hereby certifies that the IxDF Course Certificate (ID #6cedeb07-b8e4-40fa-93d6-53a8c4b36969) has been conferred upon Daniel Peixoto with a Best in Class Distinction 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 Daniel Peixoto

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

  • Apply ISO-standard user-centered design principles (effectiveness, efficiency, and satisfaction) to deliver websites that drive business outcomes rather than just look good.

  • Diagnose where users get stuck using Don Norman's interaction model, the four goal-mapping questions, and hierarchical task analysis.

  • Plan and conduct user observation and interviews to surface what users actually do beyond what they say they do.

  • Choose the most appropriate usability evaluation method from heuristic reviews, walkthroughs with users, and usability testing with real users.

  • Plan, run, and analyze usability tests early and often.

  • Understand the legal accessibility requirements under the ADA, Section 508 of the Rehabilitation Act, the Disability Discrimination Acts, the European Convention on Human Rights, and equivalent national laws.

  • Apply the WCAG four principles and design websites that work with assistive technologies to reach a wider audience.

  • Develop research-grounded personas and persona stories that promote team empathy and sharpen design focus.

  • Design navigation, hyperlinks, and breadcrumbs that reflect a coherent conceptual model, place primary and secondary menus where users expect them, work on touch devices, and orient users who arrive from search engines on internal pages.

  • Organize web content around primary persona goals using the inverted pyramid structure, plain words, one key idea per paragraph, balanced prose and bullets, and on-page anchors, so visitors quickly judge whether they are on the right page.

  • Provide feedback close in timing, location, and meaning to the event it relates to, use validation and error messages as a last resort, preserve user-entered data, and translate technical errors into plain language so users can recover without losing their work.

  • Account for change blindness so error indicators are actually seen, and design confirmation flows that leave users certain a transaction has succeeded.

  • Apply the Gestalt principles of perception and grid-based layouts, and honor expected layout conventions, to reduce cognitive load, speed task completion, and lower bounce on first-time visits.

  • Design forms that respect user time and treat input as valuable.

  • Use color strategically, never relying on color alone to communicate meaning, choosing combinations that meet WCAG contrast ratios, and adapting to cultural context.

  • Plan, run, and interpret open and closed card sorts using hierarchical cluster analysis so that navigation labels and form fields match the words users actually search for, reducing support tickets and abandoned carts.

  • Run paper prototype sessions to test concepts with users at minimal cost before any code is written.

  • IxDF
 Senior Leader
    IxDF Senior Leader distinction: Strengthened the IxDF community through sustained leadership.
  • IxDF
 Country Manager
    IxDF Country Manager distinction: IxDF Country Manager in a country
  • IxDF 
Community Leader
    IxDF Community Leader distinction: Awarded for serving as an influential IxDF community leader
  • IxDF Distinguished Scholar
    IxDF Distinguished Scholar distinction: Completed 30 IxDF Courses
  • More distinctions
    +11

Dublin, Ireland

Daniel Peixoto

Senior UX Lead at Roche

IxDF Distinctions

Distinctions are conferred upon Daniel Peixoto in formal recognition of their notable achievements and contributions, as stipulated by the IxDF Educational Codex.

IxDF Assiduous
 Learner Award Distinction IxDF Assiduous Learner Award
Completed 5
IxDF Courses
IxDF
 Best-in-Class Distinction IxDF Best-in-Class
Completed an IxDF Course
with a score of 100%
IxDF Certified
 Course Completer Distinction IxDF Certified Course Completer
Completed one or more
IxDF Courses.
IxDF 
Community Explorer Distinction IxDF Community Explorer
Attended 3 IxDF Meetups
IxDF Community Influencer Distinction IxDF Community Influencer
Contributed meaningfully
to IxDF Conversations
IxDF 
Community Leader Distinction IxDF Community Leader
Awarded for serving as an influential IxDF community leader
IxDF Connected Professional Distinction IxDF Connected Professional
Attended 10 or more IxDF Meetups
IxDF
 Country Manager Distinction IxDF Country Manager
IxDF Country Manager
in a country
IxDF Distinguished Scholar Distinction IxDF Distinguished Scholar
Completed 30
IxDF Courses
IxDF Local
 Group Member Distinction IxDF Local Group Member
Member of an
IxDF Local Group
IxDF Master
 Class Learner Distinction IxDF Master Class Learner
Completed one or more
IxDF Master Classes
IxDF
 Meetup Organizer Distinction IxDF Meetup Organizer
Organized meet-up(s) for
an IxDF Local Group
IxDF
 Senior Leader Distinction IxDF Senior Leader
Strengthened the IxDF community through sustained leadership.
IxDF Outstanding
 Learner Award Distinction IxDF Outstanding Learner Award
Completed 15
IxDF Courses
IxDF Top 10%
 Course Taker Distinction IxDF Top 10% Course Taker
Completed an IxDF course
with a score of 90%
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Certificates Earned
by Daniel Peixoto

IxDF Course Certificates are awarded to Daniel Peixoto 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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Human-Computer Interaction: The Foundations of UX Design certificate

Human-Computer Interaction: The Foundations of UX Design

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Gamification - How to Create Engaging User Experiences certificate

Gamification - How to Create Engaging User Experiences

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How to Create Intuitive Products by Imitating Physicality certificate

How to Create Intuitive Products by Imitating Physicality

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Emotional Design — How to Make Products People Will Love v1 certificate

Emotional Design — How to Make Products People Will Love v1

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IxDF Master Class Certificates Earned

IxDF Master Class Certificates are awarded to Daniel Peixoto in formal recognition of their attendance and ongoing commitment to learning from industry leaders.

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Healthcare UX: Design for Patient Engagement and Technology Adoption certificate

Healthcare UX: Design for Patient Engagement and Technology Adoption

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IxDF Membership Certificate

This IxDF Membership Certificate (ID #LJ4CltWHQ) has been issued to Daniel Peixoto in formal recognition of their membership of the Interaction Design Foundation (IxDF).

The authenticity of this membership certificate can be verified on this permanent link.

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