Іван

Ivan Polukhin — Frontend Developer
LinkedIn | GitHub | [открыть контакты](см. выше в блоке «контактная информация») | @P1M228 | [открыть контакты](см. выше в блоке «контактная информация») | Kamianske,
Ukraine
Summary
Frontend Developer with 2+ years of commercial experience building scalable React and React Native
applications. Strong background in Redux Toolkit, API-driven workflows, and complex state management,
including dynamic multi-step user flows with conditional branching and persistent navigation state. Built and
shipped a fully native multi-step deposit flow from scratch, replacing a WebView-based solution, and validated it
through a beta with around 1,000 users. Experienced working in a monorepo architecture across multiple teams
(EU and US apps, Storybook, shared component, localization, and utility libraries) and comfortable collaborating
with backend, design, and QA engineers. Skilled in writing maintainable code, covering business logic with unit
and integration tests (80–90% coverage), and integrating REST APIs with robust error handling for validation
issues, partial failures, and inconsistent responses.
English level: Pre-Intermediate (A2). Ukrainian — native.
Skills
React, React Native, Expo, React Navigation, TypeScript, JavaScript;
Redux Toolkit, Zustand, TanStack Query, Dexie.js, REST APIs, Axios, Firebase;
HTML5, CSS3, SCSS, Tailwind CSS, Bootstrap, Material UI (MUI);
Vite, Webpack, NX, Yarn — monorepo tooling and build configuration;
Jest, Storybook, Maestro — unit, integration, component, and E2E testing;
Git, GitHub, GitLab, GitFlow, code review, Agile / Scrum;
Adobe Photoshop, Figma — working with design handoffs and assets.
Experience (2+ years)
Frontend Developer TenThousand 2 years 2 months, 02/2024 — PRESENT
Responsibilities:
Develop and maintain cross-platform features for React and React Native applications using TypeScript,
Redux Toolkit, and TanStack Query.
Manage complex client state with Redux Toolkit, including step persistence, conditional flows, and async
synchronization with the backend, ensuring no data loss on interruption.
Integrate REST APIs end-to-end (data fetch → store → step-by-step submission) with structured error
handling for validation issues, partial failures, and inconsistent responses.
Build reusable form components and validation logic that support dynamic, bank-driven flows with varying
field sets and branching rules.
Work in a monorepo architecture across multiple teams (EU app, US app, Storybook, shared libraries for
components, localization, and utilities).
Achievements:
Built a multi-step deposit flow from scratch in React Native, replacing a WebView-based solution with a fully
native implementation, with a dynamic step count based on API and bank responses, branching logic for
nested questions, and persistent navigation state.
Covered 80–90% of business logic and API interactions with unit and integration tests, significantly reducing
regressions across releases.
Participated in beta testing with around 1,000 users to validate flow stability and UX before release, driving
fixes based on real-world feedback.
Contributed to a shared component library in the monorepo, accelerating feature delivery across the EU and
US apps and improving UI consistency.
Education
Technological Specialist College of Dniprovsky State Technical 2023, Kamianske, Ukraine
University
Languages
Ukrainian — native;
English — Pre-Intermediate (A2), able to read technical documentation and communicate in writing.