Project closed in 2026
Zero-commission online payments for restaurants
Direct acquiring integration for a food delivery SaaS platform. 0% order commission instead of 3-5% charged by aggregators.
Technical context
Nuxt, TypeScript, Node.js
Kaliningrad, RussiaBuilding software since 2010
Nick Kosarev
Fullstack Developer / Tech Lead
I build web products across interfaces, backend services and infrastructure. Foodtech and fintech experience; hands-on responsibility from data models to release.
Experience
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EXPI · ИП Петров И.И.
Tech Lead / Fullstack Developer / DevOps
Full experience and responsibilitiesSole engineer for a fintech platform: architecture, implementation, infrastructure and releases.
- Migrated PHP data and services in stages using ETL, parallel reads and reconciliation. Decoupled copy-trading workers from PHP; portal migration remained in progress.
- Moved Matrix to a cloud worker with idempotent commands, broker reconciliation, leases and pausing on uncertain state. Prepared a paid subscription and public offer for launch; Matrix remained in production testing.
Case studies
Find a relevant problem, then explore the implementation. Filter by area, technology or project.
Read case
Project closed in 2026
SEO architecture for delivery sites
Individual product pages with Schema.org markup, SSR, meta tags. Client sites rank on Google's first page for local queries.
Technical context
Nuxt, TypeScript, Tailwind CSS
Projects
Past independent products and public source. Closed projects are labelled; the engineering work remains available.
NextOrders
An open-source food-ordering platform with SSR, multiple languages, a persistent cart and guest checkout.
Meloteka
Project closed in 2026
Built a music catalog with a web app, Telegram Mini App, Subsonic API compatibility and audio transcoding.
Startodel
Project closed in 2026
Built a food-delivery website platform with menus, online orders, payments, notifications and multiple languages.
ChatGame
Project closed in 2026
Built an interactive Twitch game with chat commands, real-time synchronization and a Telegram Mini App.
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