X5 Tech
Procurement approval module (NKZ 3.0)
Procurement approval at X5: roles, statuses, and long flows in one UI
ReactTypeScriptKeycloakOrvalOpenAPI
Details →Senior Frontend Engineer
Maksim Peshekhonov
Senior Frontend Engineer
Available ASAPRemote, Russia
Senior Frontend Engineer: React, TypeScript, JavaScript, Next.js, REST API, CI/CD. 7 years shipping modules to production. X5, BI.ZONE, NLMK, Citilink, POTALONU.
Core technologies
ReactTypeScriptNext.jsViteOpenAPI/OrvalTanStack QueryReact Hook FormGraphQLWebSocketKeycloakFSDModule FederationMaterial UICI/CDSentrye-commerce
Selected work
Selected work
Case studies from production — enterprise, e-commerce, real-time, and Mini Apps.
POTALONU / PREEGLOS
PREEGLOS — seat map editor
In-house seats.io alternative: venue editor and seat-picker widget
Next.jsReactCanvasPostgreSQLDrizzle ORM
Details →sendonate.com
sendonate.com — donations and OBS overlay
Streamer donations: dashboard, Mini App, and OBS overlay
ReactViteTypeScriptTelegram Mini AppWebSocket
Details →ZodiacLab
ZodiacLab — marketplace and consultations
Services marketplace with catalog, orders, and in-browser video consultations
Next.jsReactTypeScriptNest.jsWebRTC
Details →SmartPrice
SmartPrice — smart pricing
Web system for price lists, tech cards, and financial model for production
Next.jsReactTypeScriptTailwind CSSZustand
Details →NLMK
Cast iron release registration
Production data for blast furnace operations instead of spreadsheets
ReactTypeScriptKeycloakTanStack TableTanStack Query
Details →SmartFish
SmartFish KKM — tablet POS
React Native (Expo) POS: shifts, sales, payments, and card terminal
React NativeExpoTypeScriptExpo RouterNativeWind
Details →SmartFish
SmartFish — management platform
Fish-farm management UI: sites, workshops, warehouses, staff
ReactTypeScriptViteEffectorFSD
Details →Experience
Experience
7+ years commercial dev: React/TypeScript, enterprise modules, e-commerce, real-time products. Git, REST/GraphQL, code review.
Sep 2025 - Jun 2026
Remote
sendonate.com
Sole frontend: Mini App, streamer dashboard, overlay
ReactTypeScriptJavaScriptViteWebSocket
- Built on React a donation Mini App, streamer dashboard, and overlay with alerts and progress bar; shipped to production
- Connected REST API and live WebSocket alerts
PREEGLOS
Ticket storefront and hall layout editor
Next.jsReactTypeScriptJavaScriptCanvas
- Built the storefront and checkout on Next.js: Auth.js, PostgreSQL, REST API from OpenAPI
- Built a Canvas hall-layout editor and an embeddable seat-picker widget instead of seats.io
Apr 2024 - Jul 2025
Remote
NKZ 3.0 - procurement approval
Module for hundreds (up to thousands) of internal users
ReactTypeScriptJavaScriptViteOrval
- One of 2 frontend engineers: React, TypeScript, Keycloak roles, long forms, REST API (Orval), UI Kit
- Owned the Vite migration with code splitting on long flows
Jun 2023 - Mar 2024
Remote
Threat Intelligence
Cyber threat analytics, frontend team of 3
ReactTypeScriptJavaScriptGraphQLApollo
- Built threat-category sections and a detail form for relationships on GraphQL (Apollo)
- Added list virtualization; covered with tests (Jest); ran code review
May 2022 - Jun 2023
Remote
Cast iron release registration
SPA replacing Excel
ReactTypeScriptJavaScriptTanStack TableTanStack Query
- Replaced Excel with a React SPA: tables (TanStack Table), React Query, Keycloak
- Visited the plant, watched the real shift flow, and reflected it in the UI
Apr 2021 - Apr 2022
Remote
Catalog
Migration from PHP/Symfony to Next.js
Next.jsReactTypeScriptJavaScriptREST API
- Moved the catalog zone to Next.js: filters, sort, pagination, REST API, URL state
- Kept SEO: pages and filters stay indexable via the URL
Skills
Skills
From complex UI and data viz to fullstack, DevOps, and production observability.
Languages
TypeScriptJavaScript (ES6+)HTML5CSS3SCSS/SASSPythonNode.js
Frontend
ReactNext.js (SSR/SSG)Redux ToolkitMobXTanStack QueryTanStack TableReact Hook FormZodCanvasFramer MotionRiveLottieReact NativeExpoFeature-Sliced DesignModule FederationTailwind CSSCSS-in-JS / Emotion
Build & CI/CD
GitWebpackViteyarn workspacesmonoreposcode splittingCI/CDGitLab CIGitHub ActionsDocker
API & backend
REST APIOpenAPI/OrvalGraphQL (Apollo Client)WebSocketPostgreSQLSQLDrizzle ORMNest.jsDjango RESTKeycloakAuth.js
Web3
Web3web3.jsTonConnect
Quality & process
JestVitestReact Testing LibraryPlaywrightStorybookSentrycode reviewScrumAgile
UI & product
e-commercedesign systemsUI KitMaterial UIFigmaTelegram Mini Appsi18nextnext-intl