Oppia Android — Open Source Development & Contributions

Four focused contributions accepted into Oppia Android demonstrate how I work within an existing codebase, respond to review feedback, and strengthen regression coverage.

My merged contributions include:

• Added profile-deletion tests and fixed preservation of unrelated profile-database settings • Added transparent-image detection and math-tag validation • Extended AsyncResultSubject edge-case test coverage • Corrected English policy content alignment under RTL language settings

I also have three additional pull requests currently open in the Oppia Android project:

• Added lesson conversion compatibility verification before pinning lesson versions, covering both Alpha and Prod configurations • Improved LaTeX fraction rendering on Android with density-aware stroke widths, anti-aliasing, bounds handling, and rendering tests • Added test coverage for audio-language selection, unsupported-language notices, and switching between supported and unsupported languages

These contributions demonstrate experience with:

• Working in a large existing Android codebase • Debugging and fixing real-world issues • Writing unit and integration tests • Regression prevention and test coverage • Android UI and rendering behavior • Build and CI workflow improvements • Git-based collaboration and code review

Technologies: Kotlin, Android, Bazel, Git, and the project's testing/build workflow.

Outcome & Attribution: Four upstream pull requests were merged under my GitHub username, nikhilkumarpanigrahi. Three additional contributions are currently open and under review.

This case study covers my own contributions to the open-source project. Oppia is built and maintained by its wider open-source community, and this was not paid client work.

Merged contributions:

Profile-deletion fix: https://github.com/oppia/oppia-android/pull/6121

Asset validation: https://github.com/oppia/oppia-android/pull/6144

Edge-case tests: https://github.com/oppia/oppia-android/pull/6175

RTL fix: https://github.com/oppia/oppia-android/pull/6198

Currently open:

Lesson conversion verification: https://github.com/oppia/oppia-android/pull/6450

LaTeX rendering improvement: https://github.com/oppia/oppia-android/pull/6449

Audio language test coverage: https://github.com/oppia/oppia-android/pull/6448

Repository: https://github.com/oppia/oppia-android