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Caleb Guanzon

PROFILE

Caleb Guanzon

Over six months, Chris Guanzon delivered robust feature development and bug fixes for the instructure/canvas-lms repository, focusing on AI-powered experiences, accessibility, and workflow reliability. He migrated legacy UI components from Handlebars to React, implemented course-scoped feature flags, and enhanced assignment and discussion workflows with improved access control and analytics instrumentation. Using JavaScript, TypeScript, and Ruby on Rails, Chris strengthened test automation by transitioning from Selenium to Jest and expanded end-to-end coverage. His work addressed data integrity, UI persistence, and accessibility, resulting in more maintainable code and smoother user experiences across both front-end and back-end Canvas LMS systems.

Overall Statistics

Feature vs Bugs

68%Features

Repository Contributions

45Total
Bugs
9
Commits
45
Features
19
Lines of code
7,588
Activity Months6

Your Network

352 people

Same Organization

@instructure.com
184

Shared Repositories

168
Ádám MátéMember
Adam_MikulasMember
Adam MolnarMember
Adam SzaboMember
Adrian GruberMember
akemenyMember
Akos HorvathMember
Alexandre DosSantosMember
alvaro.talaveraMember

Work History

October 2025

23 Commits • 7 Features

Oct 1, 2025

October 2025 monthly highlights for instructure/canvas-lms: Delivered core AI Experiences UI overhaul and reliability improvements. Key features include renaming to ai_experiences, adding a course tab, a functional show page, and UI persistence with full create/edit flows; plus dynamic llm_conversation_url loading and a base URL fallback to improve resiliency. Major bugs fixed include LLM Conversations autoscroll, accessibility, and padding/overflow issues, plus navigation breadcrumbs corrections and updated pedagogical guidance references. Added testing and instrumentation: end-to-end tests for AI conversations, data-testid attributes, and validation updates. Technologies demonstrated: React-based UI migration, UI/UX persistence, accessibility improvements, feature-flag aware client, and robust on-demand loading with tests. Business impact: reduces time-to-value for AI-enabled features in Canvas LMS, improves reliability of AI conversations, and increases test coverage to prevent regressions.

September 2025

5 Commits • 3 Features

Sep 1, 2025

September 2025 focused on enabling AI-powered experiences, strengthening assignment workflows, modernizing UI, and boosting test stability in canvas-lms, delivering business value through faster experimentation, safer access, a better UX, and more reliable builds.

August 2025

5 Commits • 3 Features

Aug 1, 2025

Monthly work summary for 2025-08 focusing on delivering business value and technical achievements for instructure/canvas-lms. Highlights include accessibility enhancements to tagging UI, cleanup of assignment overrides on group deletion, UI simplifications in SpeedGrader, and a bug fix addressing saving of assignment overrides with out-of-range dates. Emphasizes accessibility, data integrity, and workflow simplification.

July 2025

3 Commits • 1 Features

Jul 1, 2025

July 2025 monthly summary for instructure/canvas-lms. Delivered reliability and UX improvements focused on differentiation tag memberships and SpeedGrader. Implemented deduplication for differentiation tag user memberships to prevent duplicates in bulk_add_users_to_differentiation_tag and updated API tests for multi-section additions. Enhanced SpeedGrader with proper group-filtering when differentiation tags are enabled and refined the submission status pill to accurately reflect checkpoint statuses (Excused, Late, Missing, Extended). These changes reduce data inconsistencies, improve grader efficiency, and increase accuracy of student statuses, contributing to smoother course management and reporting.

June 2025

4 Commits • 2 Features

Jun 1, 2025

June 2025 monthly summary for instructure/canvas-lms focusing on feature flag enablement, flag consolidation for discussion checkpoints, API documentation enhancements, and UI testability improvements. These efforts reduce admin friction, simplify flag management, and improve automation reliability and developer experience.

May 2025

5 Commits • 3 Features

May 1, 2025

May 2025 - instructure/canvas-lms: Focused on correctness, reliability, analytics, and accessibility. Implemented a bug fix to correctly calculate reply_to_entry_required_count for group discussions and their child topics under checkpoints_group_discussions. Preserved group settings during conversion to checkpointed discussions when checkpoints_group_discussions is enabled (feature-flag gated). Added analytics instrumentation by embedding Pendo data attributes on discussion form graded and checkpoints controls to capture user interactions. Replaced flash-based alerts with an AlertManager integration in RosterView to provide accessible, screen-reader friendly alerts. These changes improve accuracy of discussion requirements, ensure checkpointing behavior remains consistent, enable data-driven product decisions, and enhance accessibility.

Activity

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Quality Metrics

Correctness92.8%
Maintainability89.8%
Architecture86.6%
Performance84.8%
AI Usage23.6%

Skills & Technologies

Programming Languages

CSSGraphQLHTMLHandlebarsJSXJavaScriptMarkdownRubySQLTypeScript

Technical Skills

AI IntegrationAI Prompt EngineeringAPI DevelopmentAPI IntegrationAccess ControlAccessibilityAccessibility (a11y)Back End DevelopmentBackbone.jsBackend DevelopmentCachingCode ReversionComponent IntegrationComponent RefactoringComponent-Based Architecture

Repositories Contributed To

1 repo

Overview of all repositories you've contributed to across your timeline

instructure/canvas-lms

May 2025 Oct 2025
6 Months active

Languages Used

GraphQLJSXJavaScriptRubyTypeScriptYAMLHandlebarsSQL

Technical Skills

API DevelopmentAccessibilityBackend DevelopmentComponent IntegrationFrontend DevelopmentFull Stack Development