Андрій

ANDRII KUSHYLUN
Senior Front-End Developer (Angular / Ionic)
Kyiv, Ukraine • [open contact info](look above in the "contact info" section) • [open contact info](look above in the "contact info" section) • [open contact info](look above in the "contact info" section)

PROFESSIONAL SUMMARY
Senior Angular Developer with 8+ years delivering enterprise and real-time trading platforms across web, mobile, and CRM.
Strong in scalable architecture, performance optimization, and modern Angular (Signals, RxJS), with a consistent record of
cutting bundle size, raising test coverage, and modernizing legacy codebases into fast, maintainable products.

TECHNICAL SKILLS
Frontend: Angular, Ionic, TypeScript, JavaScript, HTML, CSS
UI Libraries: Angular Material, PrimeNG, Tailwind CSS, Chart.js
State Management: Signals, RxJS, NgRx
Architecture & Performance: Modular architecture, lazy loading, SSR, change-detection optimization
Testing: Jest, Jasmine/Karma, Cypress
Communication: REST, WebSockets, GraphQL
Backend (familiar): Node.js, NestJS, PostgreSQL
Tooling & DevOps: Webpack, Docker, CI/CD
AI Tools: Claude Code, GitHub Copilot, Cursor

PROFESSIONAL EXPERIENCE
Senior Front-End Developer (Angular / Ionic) Sep 2021 – Present
Protonix Technology
• Architected the front end of a white-label, multi-broker trading platform covering stocks, crypto, and forex across up to
1,000 instruments, with per-broker theming so each broker ships a fully branded product.
• Delivered the product across three surfaces from a shared Angular codebase — responsive web app, cross-platform
mobile app in Ionic, and a per-broker CRM.
• Built real-time market-data streaming over WebSockets, keeping the UI fast and responsive under continuous live price
updates.
• Rewrote legacy modules and separated the Ionic and Angular builds to remove performance bottlenecks — stripped
mobile-only dependencies out of the web bundle, significantly cutting bundle size and improving load times.
• Raised automated test coverage from ~20–30% to ~70%, reducing regressions and making the codebase safer to
change.
• Built an internal harness integrating AI coding agents (Claude Code, GitHub Copilot, and Cursor) into the team’s
workflow to speed up day-to-day development.
Front-End Developer (Angular) Jan 2021 – Aug 2021
NextsolX GmbH
• Built Angular UI for the asset library of an enterprise Digital Asset Management platform (Pixelboxx), used by large
corporate clients to organize, search, and distribute media assets.
• Developed reusable UI components in Storybook and supported their integration across applications, improving
consistency and reuse.
Front-End Developer (Angular) Sep 2017 – Dec 2020
KiTAG IT Services
• Rebuilt a legacy BMW enterprise admin dashboard on a modern Angular stack, replacing the previous system to
improve performance and usability.
• Developed data-heavy analytics views with interactive charts and tables, owning the front end from architecture
through delivery over 3+ years.
• Designed a scalable, maintainable architecture using established design patterns and added unit-test coverage to keep
the codebase reliable as it grew.

LANGUAGES
English — Upper-Intermediate (B2)
Ukrainian — Native