Kotlin/Android Principal Engineer

David Allison is an experienced open-source maintainer and top contributor for AnkiDroid (Android client for Anki with 10M+ downloads). With approximately 10 years of experience, including 6 years in open source, David is seeking stability after years of contracting and maintainership. He leads a global volunteer team, taking full product ownership, setting multi-year directions, planning and implementing architectural migrations, and driving project progress through community engagement, triage, fixes, reviews, and mentorship. Highlights include bringing AnkiDroid releases in tandem with upstream, migrating a 15-year-old Java 7 codebase to Kotlin while preserving git blame, migrating to a common Rust-based backend, improving app ratings from 4.5 to ~4.8 stars, dramatically reducing crash rates, and mentoring hundreds of contributors while co-launching AnkiDroid's Google Summer of Code programme. AnkiDroid is now a hobby, separate from his day job. David is looking for full-time or contract roles, open to IC or EM positions, and is drawn to work that improves people's lives, across any stack.