Василь

VASYL DEMCHUK
Frontend Engineer | Angular, TypeScript, RxJS, NgRx, Vue.js, 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
Frontend Engineer with 5+ years of commercial experience building complex web applications across CRM, banking, ticketing,
sports, and industrial monitoring. Deep expertise in Angular and TypeScript, with hands-on experience in Vue.js, Svelte, and
React. Focused on frontend architecture, reusable component systems, state management (NgRx, NGXS, Signals), complex
reactive forms, real-time and data-intensive UI, and performance optimization. Comfortable working across the stack with
.NET and Node.js backends. Experienced in introducing AI-assisted engineering workflows into day-to-day development.

TECHNICAL SKILLS
Frontend: Angular 12–22, TypeScript, JavaScript (ES6+), RxJS, Signals, NgRx, NGXS, Reactive Forms, Vue.js, Svelte, React,
PrimeNG, Tailwind CSS
UI and Styling: HTML5, CSS3, SCSS, Angular Material, Bootstrap, Highcharts, Ionic, Rive, Lottie
Architecture: Frontend architecture, reusable component libraries, design systems, state management, lazy loading,
performance optimization, real-time UI (SignalR), REST API integration
Testing: Jasmine, Karma, Cypress
Tools and Delivery: Git, GitFlow, CI/CD, Jenkins, Docker, Postman, Swagger, Sentry
Backend (working knowledge): .NET 10, Node.js, Express, PostgreSQL, Redis, TimescaleDB
AI-assisted engineering: Claude, Codex, refactoring, debugging, workflow automation

WORK EXPERIENCE
Full Stack Engineer (Contract) | Molochnyi Ostriv Jul 2026 – Nov 2026
Factory automation and real-time monitoring system
• Built the Angular 22 frontend for a plant monitoring platform: live dashboards and data-intensive views fed by PLC sensor
data.
• Implemented real-time updates in the UI using SignalR streams for sensors and live production data.
• Developed the supporting backend on .NET 10 with PostgreSQL, TimescaleDB (time-series sensor data), and Redis.
• Owned the system end to end, from data ingestion to the user interface.

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.

Vasyl Demchuk | Frontend Engineer 1

• 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 with 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 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.

PERSONAL PROJECTS
• Built pet projects with Vue.js and Svelte.

EDUCATION
Ternopil Ivan Puluj National Technical University
Master's Degree in Cyber Security | Bachelor's Degree in Computer Science | Junior Specialist in Computer Science

LANGUAGES
Ukrainian: Fluent | English: Intermediate+

Vasyl Demchuk | Frontend Engineer 2