Oleksandr

OLEKSANDR KRUTKO
Frontend Developer | React · TypeScript · Next.js
[відкрити контакти](див. вище в блоці «контактна інформація») | Telegram: @Krut1klex

PROFESSIONAL SUMMARY
Frontend Developer with 5+ years of professional and freelance experience, including 3+ years in development
companies. Experienced in building React and TypeScript applications for CRM/trading workflows, e-commerce and
internal tools. Strong in data-intensive interfaces, TanStack Table, virtualization, WebSocket, API integration, SSR,
technical SEO and frontend performance. Independently deliver assigned features and collaborate closely with
backend teams.

TECHNICAL SKILLS
Core: JavaScript, TypeScript, React, Next.js, Vue 3, HTML, CSS
State & APIs: Redux Toolkit, RTK Query, Zustand, TanStack Query, GraphQL, Apollo Client, REST API
UI & Forms: TanStack Table, React Hook Form, Zod, Yup, Recharts, React Router, WebSocket, Socket.io
Styling & Tools: SCSS, CSS Modules, Tailwind CSS, Material UI, Ant Design, Framer Motion, Vite, Webpack, Git, GitLab
CI/CD, Figma

PROFESSIONAL EXPERIENCE

G Solutions | Frontend Developer | Apr 2025 – Oct 2026
CRM & Trading Platform (NDA)
Developed new CRM features and improved existing modules using React and TypeScript; delivered assigned
features independently within a team of three frontend developers.
Built hierarchical reports and large data tables using TanStack Table with server-side filtering, sorting,
pagination, infinite scrolling and row virtualization.
Implemented real-time notifications and asynchronous export flows using REST APIs and WebSocket / Socket.io;
developed bulk import and lead-distribution interfaces.
Developed Recharts analytics and fixed UTC/local timezone discrepancies in date-based reporting; built dynamic
forms with React Hook Form, Zod and Yup.
Optimized React rendering and API interactions through reduced re-renders, debounced search, caching and
request cancellation; refactored legacy components into reusable UI elements.
Implemented role-based UI access, URL-synchronized filters and multilingual interfaces; worked with Redux
Toolkit, RTK Query, Zustand and TanStack Query.
Collaborated with backend engineers and QA on API integration issues, technical approaches and production
bug fixes; checked GitLab pipeline results during releases.

Online Pharmacy — E-commerce Storefront & Admin Panel
Developed production storefront features with Next.js App Router, TypeScript, Server/Client Components and
Server Actions; contributed to frontend architecture decisions with the Team Lead.
Built dynamic product cards with conditional promotions, multi-criteria URL-based catalog filters, debounced
product search, shopping cart and customer account workflows.
Implemented checkout flows with LiqPay redirect, dynamic forms using React Hook Form / Zod and Zustand
state management; developed React admin features for products, orders, pricing, stock and image uploads.
Configured multilingual routing and worked on metadata, sitemap, technical SEO and Lighthouse-guided
performance improvements; supported releases and production maintenance.

WaveTel — Telecommunications Platform
Sole frontend developer for a React-based telecommunications project; built responsive, cross-browser interfaces
and reusable forms, drawers, modals and data tables.

Brander | Frontend Developer | Aug 2023 – Mar 2025
UKR.BRO — E-commerce Platform
Built the production storefront from scratch as the sole frontend developer using React, TypeScript and vite-
plugin-ssr; defined frontend structure, shared components, Redux Toolkit state and REST API integrations.
Developed product catalog, cart and checkout interfaces and responsive, cross-browser layouts from Figma;
collaborated with backend engineers and QA through releases and production support.
Owned ongoing technical SEO and performance improvements: SSR, metadata, canonical URLs, sitemap,
robots.txt, Schema.org, localized URLs / hreflang, Google Search Console and Lighthouse.
Implemented multilingual pages and e-commerce analytics events using Google Analytics 4 and Google Tag
Manager.

Freelance | Frontend Developer | Sep 2021 – Jul 2023
Sole frontend developer in a team with two backend engineers and a Project Manager; designed frontend
architecture for landing pages and web applications using React, TypeScript and Redux Toolkit.
Implemented responsive Figma-based interfaces, forms, authentication flows and REST API integrations;
enhanced an existing corporate website using Vue 3 and TypeScript.

PERSONAL PROJECT
NEXUS — Real-time Client Operations Platform | Personal Project (in development)
Building a full-stack SaaS platform for agencies and product teams to centralize clients, projects, tasks and
operational workflows.
Architecture: pnpm monorepo with separate Next.js / TypeScript web application and NestJS API, organized
around reusable frontend components and domain-focused features.
Data layer: GraphQL with Apollo Client and Apollo Server; PostgreSQL with Prisma ORM for backend data
management.
Product features in development: client and project management, task workflows, project activity history and
global workspace search across clients, projects, tasks and files.
Frontend engineering: reusable forms and navigation, interactive task interfaces and real-time-oriented
application features; SCSS Modules for styling.
Development tooling: Docker for local development, Vitest and Oxlint; additional experience with UI transitions
and Framer Motion. Backend technologies are used in this personal project, not commercial roles.

EDUCATION & LANGUAGES
Kharkiv National University of Radioelectronics (NURE)
Master’s Degree in Artificial Intelligence | 2023–2025
Bachelor’s Degree in Artificial Intelligence | 2019–2023
Ukrainian: Fluent | English: B1