Denys Fihurskyi
Denys Fihurskyi

Senior Frontend Engineer

Open to offers · Member since 12 Nov 2026
Location
Ukraine
Desired salary
Unspecified
Work preference
Remote Only
Experience level
Senior

About

Professional summary

I am a Senior Frontend Engineer with more than nine years of experience building complex, data-intensive web applications. My core expertise is in React, TypeScript, JavaScript, and modern frontend architecture, with earlier extensive experience in Angular development.

I have delivered products across private equity, energy management, and work management domains. I specialize in creating intuitive, scalable user interfaces for financial data, project management workflows, real-time communication, and operational monitoring.

In my current role, I build high-volume financial data interfaces, white-label SaaS platforms, document data-extraction tools, and interactive visualizations. I have led UI redesign initiatives and implemented accessibility-oriented themes including dark and high-contrast modes.

I am experienced in micro-frontend architecture, independently deployable widgets, real-time integrations using SignalR and WebSockets, and state management with Redux, NgRx, and RxJS. I also work with REST APIs, mapping integrations, complex forms, and multi-page application flows.

I apply automated testing practices with Vitest, Jest, Cypress, and React Testing Library. I use AI-assisted development tools such as Claude Code, GitHub Copilot, and Cursor to support implementation, refactoring, and debugging.

I am based in Ukraine and open to remote opportunities where I can contribute to high-quality frontend products and collaborative engineering teams.

Skills

24 capabilities

Tech stack & tools

Working toolkit

Collaboration

Languages & Frameworks

Experience

Career history

Senior Software Engineer, Frontend Dataart

Built complex frontend capabilities for a private equity SaaS platform using React, TypeScript, MUI, AG Grid Enterprise, SignalR, and Rsbuild. Developed high-volume financial data grids with calculations, validation, comments, and tree and master-detail views. Led a platform-wide UI redesign with dark mode, high-contrast mode, and per-client white-label themes.

Created a PDF data-extraction tool for mapping document values to structured financial fields. Implemented real-time notifications and task chat with SignalR and WebSockets, and built interactive fund-structure hierarchy charts using React Flow. Used Claude Code, GitHub Copilot, and Cursor for implementation, refactoring, and debugging.

Contributed to an energy management platform by building an interactive outage map with risk zones, potential outage areas, and configurable notifications. Delivered independently releasable white-label widgets, designed a micro-frontend architecture with RxJS and WebSocket-based cross-widget communication, and developed complex electricity usage monitoring forms and multi-page flows.

Frontend Developer Software development company

Contributed to the core frontend modules of a work management platform built with Angular, TypeScript, RxJS, NgRx, and Sass. Developed project management and digital board features, including task boards with list, board, and timeline views.

Built CRM interfaces for tracking deals, comments, activities, and tasks. Implemented real-time team communication capabilities including chat, comments, and shared updates, as well as calendar and email modules for centralized scheduling and communication.

Managed complex application state using NgRx and RxJS within a large, multi-module Angular codebase.

Education

Learning history

Ternopil National Economic University

Master's Degree, Computer Information Technologies

Master's Degree from the Faculty of Computer Information Technologies.

Ternopil Ivan Puluj National Technical University

Bachelor's Degree, Applied Information Technologies and Electrical Engineering

Bachelor's Degree from the Faculty of Applied Information Technologies and Electrical Engineering.

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