Production full-stack: TypeScript APIs, PostgreSQL, React, Docker, and operations. I own a Telegram subscription platform with an idempotent payment path, Mini App, operator admin, and CI/CD.
Own production subscription commerce in Telegram: idempotent SBP payments, VPN-panel provisioning, Mini App and operator admin on one TypeScript API.
Designed the money path as a state machine (Serializable get-or-create, claim lease, fulfillment marker) so retries cannot double-charge or double-provision.
Two clients on one contract (bot + Mini App); CI/CD for build and deploy; Compose, PostgreSQL, Redis, Prisma.
Full-stack Developer
Product development
2023 - Present
Ship Next.js and TypeScript products: UI, APIs, integrations, and server logic in one loop.
Own features end to end — interface through data layer — with a focus on architecture that stays maintainable after release.
Open Source Contributor
GitHub: Jenison4ik
2024 - Present
Publish TypeScript systems and tooling with runnable docs so others can extend the work.
