Next.jsNestJSPostgreSQLMinIO
Online school for chemistry exam prep (EGE/OGE)
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.
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ReactTypeScriptVite
Modern B2B landing
The site runs on MODX with a catalog and hundreds of content pages. The landing looked dated, but a full CMS rebuild would be costly and risky. I delivered a phased update: a new landing and privacy policy on React; the catalog and other sections remain on MODX for now. Leadership had to recognize their brand — two accent colors, burgundy and teal, block structure, client logos — in a modern presentation.
DetailsInterSELT Plan
ReactExpressPostgreSQL
Project management ERP system
Replacement for Google Sheets that slowed down with large data volumes — a unified ERP. 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.
DetailsInterSELT Cloud
NextcloudPostgreSQLRedisS3
Self-hosted corporate cloud instead of Google Drive
Migration from Google Drive to self-hosted cloud in Russia — without changing familiar browser and desktop sync workflows. Migrated 700,000+ files (~500 GB), set up backups, protection against accidental deletion, HTTPS access.
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Next.jsNestJSPostgreSQLS3YooKassa
SaaS platform for tutors: homework with auto-grading
Multi-tenant SaaS for private tutors: courses, lessons, homework with auto-grading, and deadlines — instead of messenger threads. A separate product built on experience from the NMN Chemistry platform: its own domain, server, database, and brand. Solo fullstack from product plan and landing to subscription billing and deployment.
DetailsInfraHub
In developmentZabbixresticReactTauri
Server and service monitoring
Monitoring availability and health of servers and services: Zabbix on the infrastructure side, backups via restic, local client to connect to monitoring.
DetailsGeoportal
ReactOpenLayersExpressPostgreSQL
Corporate GIS for maps and spatial data
Web portal for specialists working with cartographic materials and measurements. One interface: map visualizations, point parameter values, charts, file upload, and export.
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Spotory
In developmentNext.jsNestJSFlutterMapLibrePostgreSQL
Map of sports spots with up-to-date status
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.
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