
Xavi Lien contributed to ScottyLabs/cmucourses by building and enhancing features that improved course scheduling, analytics, and user privacy. Over nine months, Xavi modernized frontend data fetching with TanStack Query and TypeScript, integrated PostHog analytics for actionable insights, and refined authentication flows using Clerk. Their work included backend schema updates for Gen Ed data, UI/UX improvements for scheduling and filtering, and privacy controls that gated sensitive instructor information. Xavi also stabilized deployments with configuration management and addressed bugs affecting calendar rendering and sign-in reliability. The engineering approach emphasized maintainable code, user-focused enhancements, and robust integration across React and Next.js.

October 2025 monthly summary for ScottyLabs/cmucourses focusing on business value, code quality, and preparing for upcoming term planning. Delivered two targeted changes: a UI/logic cleanup to improve maintainability and a forward-looking enhancement to support filtering for Spring 2026. These efforts reduce technical debt, keep the codebase clean, and enable smoother user workflows for course filtering.
October 2025 monthly summary for ScottyLabs/cmucourses focusing on business value, code quality, and preparing for upcoming term planning. Delivered two targeted changes: a UI/logic cleanup to improve maintainability and a forward-looking enhancement to support filtering for Spring 2026. These efforts reduce technical debt, keep the codebase clean, and enable smoother user workflows for course filtering.
September 2025 monthly summary for ScottyLabs/cmucourses. Focused on hardening user privacy and improving authentication UX in the course catalog and instructor views. Delivered fixes to ensure sensitive instructor data is hidden for unauthenticated users and stabilized the sign-in flow to reduce unnecessary UI prompts, leveraging Clerk authentication state.
September 2025 monthly summary for ScottyLabs/cmucourses. Focused on hardening user privacy and improving authentication UX in the course catalog and instructor views. Delivered fixes to ensure sensitive instructor data is hidden for unauthenticated users and stabilized the sign-in flow to reduce unnecessary UI prompts, leveraging Clerk authentication state.
August 2025 — ScottyLabs/cmucourses delivered targeted UI improvements, privacy enhancements, and frontend stabilization to support user trust and adoption. The work focused on three core areas: feature delivery with UI/API compatibility, privacy-preserving data displays, and UI stability through dependency management and bug fixes.
August 2025 — ScottyLabs/cmucourses delivered targeted UI improvements, privacy enhancements, and frontend stabilization to support user trust and adoption. The work focused on three core areas: feature delivery with UI/API compatibility, privacy-preserving data displays, and UI stability through dependency management and bug fixes.
May 2025 monthly summary for ScottyLabs/cmucourses: Implemented Geneds data table enhancements with new date-related fields and ensured frontend rendering compatibility; collaborated on data model updates and UI integration; prepared groundwork for improved Gen Ed analytics.
May 2025 monthly summary for ScottyLabs/cmucourses: Implemented Geneds data table enhancements with new date-related fields and ensured frontend rendering compatibility; collaborated on data model updates and UI integration; prepared groundwork for improved Gen Ed analytics.
March 2025: Delivered GenedsViewer disclaimer enhancements in ScottyLabs/cmucourses to improve student decision-making and align with advising processes. Key changes include more specific course guidance, reminders to verify requirements, clarified requests for missing information or lists from other schools, and a recommendation to consult an academic advisor. The work was shipped via PR merges and includes a focused disclaimer update to correct inaccuracies and improve clarity. This reduces potential student confusion and supports better course selection aligned with academic goals.
March 2025: Delivered GenedsViewer disclaimer enhancements in ScottyLabs/cmucourses to improve student decision-making and align with advising processes. Key changes include more specific course guidance, reminders to verify requirements, clarified requests for missing information or lists from other schools, and a recommendation to consult an academic advisor. The work was shipped via PR merges and includes a focused disclaimer update to correct inaccuracies and improve clarity. This reduces potential student confusion and supports better course selection aligned with academic goals.
February 2025 monthly summary for ScottyLabs/cmucourses: Delivered targeted UX enhancements for term-based filtering while maintaining stability by reverting an unintended UI change. Key updates include adding Summer 2025 to the SemestersOfferedFilter to support filtering courses for the Summer term, and restoring expected behavior by reverting the previous changes that introduced course sorting and filter clearing. The overall impact is improved course discoverability for the Summer 2025 term with preserved user experience; all changes are traceable via commits. Technologies/skills demonstrated include TypeScript/React (SemestersOfferedFilter.tsx), Git-based change management, and careful UX-focused delivery in a core catalog feature.
February 2025 monthly summary for ScottyLabs/cmucourses: Delivered targeted UX enhancements for term-based filtering while maintaining stability by reverting an unintended UI change. Key updates include adding Summer 2025 to the SemestersOfferedFilter to support filtering courses for the Summer term, and restoring expected behavior by reverting the previous changes that introduced course sorting and filter clearing. The overall impact is improved course discoverability for the Summer 2025 term with preserved user experience; all changes are traceable via commits. Technologies/skills demonstrated include TypeScript/React (SemestersOfferedFilter.tsx), Git-based change management, and careful UX-focused delivery in a core catalog feature.
January 2025 monthly summary for ScottyLabs/cmucourses focusing on delivering business value through UX improvements, deployment reliability, and calendar rendering stability. Key outcomes include removing login/logout from the frontend user slice and refactoring saved view state to support separate filter states for search and saved pages, stabilizing Prisma deployments on Railway by adjusting nixPkgs and ensuring OpenSSL availability, and fixing the TimeGrid import path in the calendar integration to ensure correct component loading. These efforts reduced user friction for saved courses and schedules, increased deployment reliability, and improved calendar display consistency, enabling faster iterations and confident releases.
January 2025 monthly summary for ScottyLabs/cmucourses focusing on delivering business value through UX improvements, deployment reliability, and calendar rendering stability. Key outcomes include removing login/logout from the frontend user slice and refactoring saved view state to support separate filter states for search and saved pages, stabilizing Prisma deployments on Railway by adjusting nixPkgs and ensuring OpenSSL availability, and fixing the TimeGrid import path in the calendar integration to ensure correct component loading. These efforts reduced user friction for saved courses and schedules, increased deployment reliability, and improved calendar display consistency, enabling faster iterations and confident releases.
December 2024 monthly summary for ScottyLabs/cmucourses: Delivered key scheduling enhancements and stabilization of the user scheduling workflow. Calendar visualization and per-professor/semester schedule retrieval significantly improve visibility and decision-making for students and faculty. UI/UX refinements and code maintainability improvements position the project for scalable growth.
December 2024 monthly summary for ScottyLabs/cmucourses: Delivered key scheduling enhancements and stabilization of the user scheduling workflow. Calendar visualization and per-professor/semester schedule retrieval significantly improve visibility and decision-making for students and faculty. UI/UX refinements and code maintainability improvements position the project for scalable growth.
November 2024: Delivered significant analytics, branding, and data-layer improvements across ScottyLabs/cmucourses and cmueats, driving better product insights and faster frontend performance. Key features include cross-repo PostHog analytics with user identification, branding refresh to reflect the TartanHacks event, and frontend data fetching modernization using TanStack Query. These changes, coupled with robust Clerk-based user tracking and updated Vite config for cmueats, enabled more accurate event tracking and faster UI data access. Major bug fixes focused on stabilizing TanStack migration and ensuring reliable user/session tracking. Overall, the work enhanced data reliability, branding consistency, and development velocity.
November 2024: Delivered significant analytics, branding, and data-layer improvements across ScottyLabs/cmucourses and cmueats, driving better product insights and faster frontend performance. Key features include cross-repo PostHog analytics with user identification, branding refresh to reflect the TartanHacks event, and frontend data fetching modernization using TanStack Query. These changes, coupled with robust Clerk-based user tracking and updated Vite config for cmueats, enabled more accurate event tracking and faster UI data access. Major bug fixes focused on stabilizing TanStack migration and ensuring reliable user/session tracking. Overall, the work enhanced data reliability, branding consistency, and development velocity.
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