Марина

MARYNA KUKENKO
Senior Frontend Engineer — React.js / TypeScript / Next.js
Ukraine (Remote, CET-compatible) | [відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація») | marynakukenko-326522166

PROFESSIONAL SUMMARY
Senior Frontend Engineer with 7 years of experience in React and TypeScript, mostly on B2B SaaS products with large data
volumes and complex user workflows. Sole frontend developer on two products, responsible for all technical decisions on
the client side. Senior engineer in distributed international teams on other projects. Currently learning Node.js to work on
the API side of features as well as the UI.

CORE EXPERTISE
Frontend Engineering: React.js, Redux, REST API, Next.js, TypeScript, JavaScript (ES6+), HTML5, CSS3, React, TS, JS
State Management: Redux, Redux Saga, Redux Toolkit, React Context / Context API
APIs & Real-Time: REST API, GraphQL, Apollo Client, WebSocket, SSE
Architecture & Leadership: Frontend Architecture, Design Systems, Micro-Frontends (MFE), Nx Monorepo, Code
Reviews, Mentoring, Technical Decision-Making, AI-Assisted Development (Claude Code)
UI & Design Systems: Figma, Internationalization (i18n / Crowdin), Material UI, Tailwind CSS, Styled Components,
Storybook, Bootstrap
Quality & Performance: Vitest, React Testing Library, SonarQube, ESLint, Husky, Prettier
Data Visualization & GIS: OpenLayers, Mapbox, WebGL, Nivo, Chart.js
Backend (non-commercial): Node.js, Express.js, REST API design, MongoDB, Mongoose, SQL, Sequelize, Node,
Express

PROFESSIONAL EXPERIENCE

Senior Frontend Engineer — Enterprise Workspace Management Platform (USA)
Sep 2025 – Sep 2026 | Senior FE in a large international engineering team | Next.js, React 18, TypeScript, Nx Monorepo,
dnd-kit, Vitest, Crowdin, n8n
• Maintained a Crowdin-based localization pipeline, keeping a complex SaaS interface fully translated across multiple locales.
• Wrote unit and integration tests with Vitest for core modules.

Senior Frontend Engineer — Advanced Security Analytics Platform (Belgium)
Jun 2023 – May 2025 | Senior FE in a team of 3 Frontend Engineers | React.js, TypeScript, Redux, REST API, OpenLayers,
Mapbox, WebGL
• Built interactive map and data-visualization features with OpenLayers, Mapbox, and WebGL.
• Set up the frontend project structure and chose libraries for new product areas.
• Implemented real-time data synchronization between backend systems and the UI using WebSockets and Redux Saga.
• Eliminated page freezes on large datasets by offloading processing to Web Workers, streaming data via SSE, and batching UI
updates.
• Reviewed pull requests, wrote technical documentation, and refactored code to keep the codebase consistent.
• Onboarded new developers and mentored junior engineers through code reviews and pair programming.

Sole Frontend Engineer — Investment Management SaaS Platform (UK)
Sep 2022 – Jun 2023 | React.js, TypeScript, Redux, REST API, Material UI
• Took over an existing codebase as the only frontend developer and maintained and extended all core modules on top of a
REST API.
• Built and maintained a Material UI-based component library used across the application.
• When requirements were incomplete, identified the gaps and prepared implementation options for the product side to choose
from.

Sole Frontend Engineer — Sales & Accounting Management Platform (UK)
Jun 2021 – Sep 2022 | React.js, TypeScript, GraphQL, Redux, Material UI
• Developed and maintained the frontend of a sales and accounting platform as the sole frontend engineer, integrating the
GraphQL API layer into all core modules.
• Organized reusable Material UI components into a shared library that new screens were built from.
• Made technical decisions on the frontend independently, from code structure to library choices.

Frontend Engineer — Sales & Operations Platform (USA)
Oct 2019 – Jun 2021 | Frontend Engineer in a large international engineering team | React.js, Redux, GraphQL, Storybook,
React Testing Library
• Built UI features with React, Redux, and GraphQL.
• Contributed to a Storybook-based component library and expanded test coverage with React Testing Library.

CERTIFICATIONS
• Node.js — In progress
• Claude Code — Kodree
• Front-End Development Course — IT Pro
• Business English Course (C1) — Solid English School

LANGUAGES
Ukrainian — Native
English — Upper-Intermediate