Katre Karja-Zhang
Product Designer
Projects
Cadastral Boundary Update Tool
Bridging complex geospatial algorithms and manual expert intervention.
E-Catalog
Efficient contract and procurement management for public sectors.
Hiking Mobile App - RMK
User-friendly trail discovery and navigation for outdoor enthusiasts.
About

Selected Projects

Designing map-based products and data-heavy workflows for expert users.

Cadastral Boundary Update Tool

Cadastral Boundary Update Tool

A GIS tool combining complex geospatial algorithms and manual expert intervention for generating and validating land parcel boundary updates.

Expert workflows Spatial validation GIS
E-Catalog

Public Procurement E-Catalog

A secure web platform for the Estonian Centre of Registers and Information Systems. It optimizes post-contract procurement activities for buyers and suppliers within a complex e-procurement ecosystem.

Data-heavy forms and tables Interaction logic System clarity
Hiking Mobile App

Hiking Mobile App - RMK

A comprehensive trail discovery and navigation tool for Estonia’s state forests. Designed for reliability in outdoor contexts, providing seamless access to maps, trail events, and destination details.

Mobile UX Search vs explore spatial context
Katre Karja-Zhang
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