Developed Ukrainian localization for navigation instructions in the GIScience/openrouteservice repository, focusing on expanding accessibility for Ukrainian-speaking users. The work involved adding Ukrainian locale codes to API enums and delivering translated navigation terms and phrases, ensuring seamless integration with the existing internationalization framework. Utilizing Java and JSON, the developer applied localization and internationalization skills to enhance the product’s usability and broaden its user base. No major bugs were addressed during this period, reflecting a targeted feature delivery. The contribution demonstrates a methodical approach to open-source collaboration, emphasizing language support and API design within a geospatial navigation context over a one-month period.