A chemistry online school platform for a tutor-founder: built on her teaching practice, media reach, and public course launches. Solo fullstack from requirements to deployment. Course enrollment website, personal accounts, question bank, assignment grading, video lessons, schedule, paid-lesson tracking, and grade book.

Corporate ERP for InterSELT — a manufacturing enterprise (~100 employees) where I have worked since 2016. Replaced Google Sheets that slowed down with large data volumes. Requirements and engineering workflows came from firsthand knowledge of the shop floor. The interface is designed with Fitts's law in mind — comfortable for daily use.

InterSELT — a manufacturing enterprise. The client needed to leave Google Drive and meet data residency requirements — without changing familiar browser and desktop sync workflows. Deployed self-hosted corporate cloud, migrated 700,000+ files (~500 GB), and set up reliable operations: backups, protection against accidental deletion, HTTPS access.

Monitoring availability and health of servers and services: Zabbix on the infrastructure side, backups via restic, local client to connect to monitoring.

Web portal for specialists working with cartographic materials and measurements. One interface: map visualizations, point parameter values, charts, file upload, and export.

Product for skate / BMX / scooter / roller riders: a map of spots showing whether a spot is open, how fresh the info is, and whether it fits your level. Not "another Spotmap" — a layer of freshness and clear spot condition.