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Astrit Bislimi

@astritbislimi

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Senior Front-End Engineer at TRETEK, building shared architecture across React apps and publishing mobile releases.

Kosovo

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At TRETEK, I lead front-end development across web and mobile applications, with primary responsibility for 10 web apps. I designed reusable UI components and shared API architecture that became a foundation across company projects.

I focus on fast, responsive experiences: I consistently reach Lighthouse scores of 90–100 through lazy loading, image prefetching, and WebP conversion. I also build type-safe features with TypeScript and integrate React applications with C#/.NET APIs.

At TRETEK, I built real-time chat and video-call features with SignalR across React and React Native, and published six production mobile releases to Google Play and the Apple App Store. Earlier, I modernized a government wealth-declaration platform and migrated legacy jQuery applications to React.

Experience

Work history, roles, and key accomplishments

Current

Senior Front-End Developer

Current

TRETEK

Aug 2024 - Present (2 years 2 months)

Lead front-end development in a 10-developer team across ~20 web and mobile applications, with primary responsibility for 10 web apps built in React.js, Next.js, and React Native. Designed a reusable front-end and API architecture that became the common foundation across company projects.

React Next.js React Native TypeScript Zustand Redux Tanstack Query Tailwind C#.NET SignalR WebSockets JWT Docker Git Google Play app store Lighthouse WebP Data Virtualization

Full-Stack Developer – Front-End Focused

TRETEK

Sep 2022 - Aug 2024 (1 year 11 months)

Translated Figma designs into pixel-accurate, responsive interfaces using React.js, Tailwind CSS, Zustand, and Redux. Modernized a government wealth-declaration platform and migrated legacy jQuery applications to React.js.

React Tailwind Zustand Redux Figma jQuery .NET Entity Framework Core Performance Optimization

Front-End Developer

UCX

Mar 2022 - Jul 2022 (4 months)

Built responsive React.js interfaces integrated with REST APIs and contributed to a 30% page-speed improvement through DOM optimization, lazy loading, and asset compression.

React REST APIs DOM Rendering Optimization Lazy Loading Asset Compression