Василь

VASYL DEMCHUK
Senior Frontend Engineer | Angular · TypeScript · Vue · React
Ukraine / Remote | [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section) | Telegram: @inseyul
PROFESSIONAL SUMMARY
Senior Frontend Engineer with 5+ years of commercial experience building complex web applications across CRM, banking,
ticketing, and interactive products. Deep expertise in Angular and TypeScript, strong hands-on experience with Vue, and additional
experience with React and Node.js/Express. Focused on frontend architecture, reusable UI systems, state management, complex
forms, performance optimization, and production reliability. Experienced in introducing AI-assisted engineering workflows into day-
to-day development and team practices.
TECHNICAL SKILLS
Core frontend: Angular 12-20, TypeScript, JavaScript ES6+, Vue.js, React, RxJS, Signals, NgRx, NGXS, Reactive Forms,
PrimeNG, Tailwind CSS
UI & styling: Angular Material, HTML5, CSS3, SCSS, Bootstrap, Highcharts, Ionic, Rive, Lottie
Architecture: Frontend architecture, reusable component systems, design systems, state management, lazy loading, performance
optimization, data-intensive UI, REST APIs
Backend & delivery: Node.js, Express, Docker, Jenkins, CI/CD, Git, GitFlow, Postman, Swagger, Sentry
Testing: Jasmine, Karma, Cypress
AI-assisted engineering: Claude, Codex, codebase navigation, refactoring, debugging, development workflow automation
PROFESSIONAL EXPERIENCE
Frontend Engineer | Binotel Dec 2025 - May 2026
smartCRM
• Built reusable Angular 20 components and complex reactive forms for data-driven CRM workflows.
• Used RxJS, Signals-based UI state, NgRx 19, Angular Material, Highcharts, Ionic, and SCSS across complex interactive
interfaces.
• Improved rendering and state-flow performance and used Sentry for production diagnostics.
• Contributed to reusable UI patterns and shared frontend architecture across the product.
• Introduced Claude-assisted development workflows and shared practical AI engineering techniques with teammates.
Frontend Engineer | Polytech Software May 2025 - Dec 2025
Interactive sports products
• Developed reusable, responsive Angular 19 interfaces and mobile-first product flows with TypeScript, RxJS, NGXS, Angular
Material, and SCSS.
• Introduced lazy loading and optimized reactive data flows to improve loading behavior and runtime responsiveness.
• Integrated Rive and Lottie animations and supported CI/CD delivery for interactive experiences.
• Participated in frontend architecture decisions, reusable component development, and code reviews.
Frontend Engineer | Concert.ua May 2024 - Mar 2025
Ticketing platform
• Delivered complex data tables, multi-step forms, and product workflows with Angular 16, TypeScript, RxJS, Angular Material,
and NgRx.
• Refactored shared UI architecture and reusable libraries, contributing to a documented 20% improvement in performance and
maintainability.
• Improved state-management patterns and predictable data flows across data-intensive interfaces.
• Developed reusable components used across multiple product areas and collaborated across backend, QA, design, and product
teams.
Frontend Engineer | PrivatBank Oct 2021 - Apr 2024
Banking products
• Built secure, responsive forms and data-intensive interfaces with Angular 15, TypeScript, RxJS, Angular Material, and SCSS.
• Added unit-test coverage with Karma and Jasmine and supported delivery through Jenkins, Docker, Postman, and Swagger.
• Contributed to Node.js/Express backend tasks and worked with React functionality where required by the product.
• Collaborated with cross-functional teams in a production financial environment.
Frontend Developer | AzSoft Rocks Sep 2020 - Sep 2021
Web applications
• Implemented reusable Angular 12 features with TypeScript, RxJS, NGXS, Bootstrap, and SCSS.
• Integrated REST APIs and supported regression safety with Karma, Jasmine, and Cypress automated tests.
EDUCATION
Ternopil Ivan Puluj National Technical University
Master’s Degree - Cyber Security | Bachelor’s Degree - Computer Science | Junior Specialist - Computer Science
LANGUAGES
Ukrainian - Fluent | English - Intermediate+

Vasyl Demchuk | Senior Frontend Engineer