Nikita Chernykh — backend/full-stack engineer

Projects

Featured

Spin up an HTTP mock in 30 seconds — no signup, no config

A Go service: paste a response body, pick a status and headers, get a public URL. No accounts, no trackers.

Client project

Employee accounts, bonuses, news, HR for a retail network

Problem: Retail-chain staff need one portal: personal accounts, sales bonuses, news, polls, vacations, store chat, HR.
What I built: A monorepo: a NestJS backend (Prisma, PostgreSQL, Redis, JWT) and a Next.js frontend (React 19, TailwindCSS, TanStack Query). One bearer API serving web and a future Android client.
Result: MVP plus a dozen feature stages shipped to production. Ready for a mobile client on the same API.

Client project

Internal SaaS monitoring 300+ services with alerting

Problem: A retail chain needs to watch hundreds of services — HTTP, TCP, databases, domains, SSL — and be the first to know about outages.
What I built: A Go service: checks of several kinds, metrics stored in PostgreSQL + ClickHouse, alerting to Telegram and Yandex Messenger. Shipped with ADRs, OpenAPI 3.1 and architecture diagrams.
Result: Covers 300+ services. Delivered to production with full docs and a deployment guide.

Offline privacy auditor for installed apps

Problem: Apps quietly observe what else is installed on the phone and how the device is used.
What I built: A fully offline Android app: parses manifests, scores risk from permission/receiver combinations, and explains every finding in plain language. Zero network calls, zero analytics.
Result: Open source under MIT. Local-only analysis — no servers, no signature feeds.

A Telegram bot for currency conversion using CBR rates

Problem: Quickly convert an amount to another currency right inside a chat — no calculators or websites.
What I built: A Go bot: free-form amount input, inline mode, rate subscriptions, whitelist and admin commands, rate caching. Rates come from the official CBR XML feed.
Result: Runs in Telegram, deploys with a single docker-compose.