A shared React/TypeScript library for 5 applications: configurable 6-10 step flows, up to 15 step types, 273 fields, and 65 sections.
Outcome
4 applications reuse shared pages without separate forks
$ curlim-sk.com
Alexander Kornev
Senior Frontend Developer - React / TypeScript
I build complex enterprise and fintech interfaces, from architecture and shared libraries to performance and product launches.
portfolio.sh
Featured Projects
A monitoring portal with a real-time panel handling about 10 events per second and retaining up to 5,000 events.
Outcome
Tab memory: 400-500+ → 150-250 MB
LeadER / TEZO
Fullstack development of a restaurant platform: SSR, backend, 7+ payment integrations, IIKO, R-Keeper, and Wallet.
Outcome
About 100 restaurants · 440K+ cards issued
Stack
Frontend
ReactTypeScriptJavaScriptRedux ToolkitRedux SagaReact QueryReact Hook FormMobXVue.jsSCSSStorybook
Backend
Node.jsExpressFastifyREST APIOpenAPIWebSocketMySQLPostgreSQLRedisBull.js
DevOps
DockerCI/CDNginxRspackModule FederationViteWebpack
Testing
JestVitestPlaywrightPuppeteer
Tools
GitSentryChrome DevToolsReact ProfilerPerformance Optimization
Experience
8 years of experience • React / TypeScript • enterprise and fintech
Fintech company / banking platform launch
Senior Frontend Developer
Jul 2025 - Present
Stack
React 19TypeScriptRedux ToolkitRedux SagaReact Hook FormReact RouterSCSS Modulesi18nextViteRspackModule FederationREST API
- Worked in a team of 3 frontend developers to launch a banking platform from scratch; the first working onboarding flow was delivered in about 3 months
- Extracted legal-entity onboarding into a shared React/TypeScript library now used by 5 applications
- Built configurable onboarding flows so products can change steps, fields, sections, copy, dictionaries, and document rules without duplicating shared pages
- The library supports 6-10 step flows, up to 15 step types, 273 fields, and 65 sections; 4 applications use the shared pages without separate forks
T1 Holding
Frontend Developer (Senior)
Jun 2022 - Jul 2025
Stack
TypeScriptReactMobXWebSocketStyled ComponentsDockerJestVitestPlaywrightPuppeteer
- Built a monitoring portal for the SFERA platform from scratch: application structure, core UI flows, and backend service integration
- Worked on a real-time event panel handling about 10 events per second with up to 5,000 historical events, plus live WebSocket charts
- Implemented feature toggles and role-based access to features and screens
LeadER (now TEZO)
Fullstack Developer (part-time since 2020)
Jun 2019 - Jun 2025
Stack
VueVuexNuxt.jsNode.jsExpressFastifyMySQLRedisBull.jsWebSocketNativeScriptDocker
- Developed a Vue/Vuex dashboard covering authentication, customers, digital cards, integrations, reporting, and core product workflows
- Migrated the public site from a Vue SPA to Nuxt 2 and SSR; PageSpeed improved from 80% to 100% on desktop and from 40% to 95% on mobile
- Built Node.js backend and payment workflows with 7+ integrations: Tochka/SBP, Tinkoff, YooKassa, Fondy, Sber, Authorize.Net, and CloudPayments
Napoleon IT
Frontend Developer -> Frontend Tech Lead
Jul 2020 - Jun 2022
Stack
VueNuxt.jsReactStyled ComponentsSCSSWebpack
- Developed frontend for admin panels, landing pages, and internal tools with Vue/Nuxt.js and React
- Participated in interface design, UI/UX work, and solution alignment with designers, backend developers, and product teams
- Worked on planning, task decomposition, and estimation
Avantrend
Frontend Developer
Mar 2020 - Jul 2020
Stack
JavaScriptTypeScriptVueSCSSNuxt.jsReactNext.jsWebpack
- Built the frontend of a lung cancer screening system that sent medical images to an ML model and displayed the processed results
- Supported deployment to medical-center workstations running Windows XP and Internet Explorer 8
- Configured Webpack for IE8, wrote custom plugins, and connected core-js and additional polyfills
D&SA
Frontend Developer
Feb 2019 - Oct 2019
Stack
VueSCSSNuxt.jsNativeScript
- Developed a web/mobile service with social networking features and contributed to UI/UX design and backend integration
Freelance
Fullstack Developer
Oct 2018 - Jun 2019
Stack
Vanilla JSPHPMySQL
- Developed websites, web applications, mini-games, interactive banners, and backend functionality
Contact
Reach out about frontend roles, projects, or collaboration — Telegram is the fastest way to reach me.