Csaba Illés

I developed a productivity app from scratch to production launch. Law firms can use the app to organize their work, team, and process their documents. I implemented custom components using Angular 10, Angular Material, SCSS, and third-party libraries like NGXS. I wrote unit tests and used Prettier for improved code quality.

Worked on the mobile and web app at an innovative online gambling company as part of the growth team.

TASKS
• Created A/B tests to learn about user behavior and improve the UX of our products to increase signup conversion rates. Added user behavior tracking and logging in all product areas using Mixpanel.
• Built landing pages for quarterly marketing campaigns working closely with designers and product managers on tight deadlines.
• Developed a new experience for users arriving at the site (landing page, signup, login) from scratch using mainly React and WordPress.
• Set up SpeedCurve to help track site performance. Aided in the setup of JSCS, then later ESLint to improve code quality. Added Rollbar for error tracking.
• Mentored and onboarded new colleagues to help them get started quicker.
• Was available during critical times as a 24/7 second-level support for any front-end issues.

• Built an online content management system, where museums can upload and manage their content.
• Built a React Native mobile app where museum visitors can see multimedia content related to exhibitions from nearby museums.
• Created monetization and business plan, different levels of product prototypes, and conducted user research.
• Signed with a major Budapest museum, handled regular communication with the institutional client, and took care of legal matters.

Designed and implemented an Angular template project using the latest best practices in Angular 20, designed to serve as a company-wide starter for new projects. This included implementing Signals and NgRx SignalStore, setting up end-to-end and accessibility testing, and configuring GitHub Actions to enforce automated checks before merging, ensuring long-term maintainability. The template also utilized feature flags and versioning implemented as separate feature modules.

Led the front-end development of a new internal portal for a major automotive corporation, including Statistical Process Control and Data Matrix Code scanning features. Proactively managed dependency updates and implemented version resolutions to address critical security vulnerabilities.

Familiar is a home-exchange demo product I built to showcase polished cross-platform TypeScript development across web and mobile. It is structured as an Nx monorepo with a Next.js 16 web app using the App Router, an Expo 55/React Native mobile app, and shared packages for database and design foundations.

The product includes home discovery with city search and filters, home detail pages with photo galleries, availability calendars and amenities, stay requests with host approval/rejection, favorites, a host dashboard for editing listings, and Clerk-powered authentication on both web and mobile. Uploaded home photos are stored on Vercel Blob, with Drizzle ORM and Neon powering the database layer.

The UI uses Tailwind v4 on web, NativeWind v4 on mobile, shadcn/ui for web components, and shared OKLCH color tokens compiled into platform-specific formats. I also added Prettier, ESLint, Commitlint, Husky, and Playwright e2e tests to keep the project maintainable and production-minded.