Over a two-month period, this developer delivered ULID support for Lua applications in the tarantool/tarantool repository, implementing the full ULID specification in C for efficient, lexicographically sortable identifier generation. The work included a new Lua API module with comprehensive encoding, decoding, and validation methods, as well as robust unit testing to ensure reliability and performance. In parallel, they contributed detailed documentation and API references to tarantool/doc, providing bilingual guidance in English and Russian. Their focus on API design, C programming, Lua, and technical writing improved onboarding and clarified usage, supporting both developer productivity and broader module adoption.