Sarah Landau
Sarah Landau

Senior Frontend Engineer

Open to offers · Member since 20 Aug 2026
Message
Location
Belgrade, Serbia
Desired salary
Unspecified
Work preference
Remote Only
Experience level
Senior

About

Professional summary

I am a Frontend Engineer with over five years of commercial experience building high-load, real-time, and AI-powered web interfaces. I focus on performance, clean architecture, maintainable frontend systems, and strong user experiences.

I work primarily with React, Next.js, TypeScript, JavaScript, and Vue.js. My experience includes designing and delivering production features independently, creating reusable component libraries, and developing complex forms and enterprise user interfaces.

I have hands-on experience with real-time technologies including WebSockets, HTTP Streaming, and LLM streaming. I have built interfaces for real-time media platforms and AI image, video, and motion generation products.

I am experienced in state management and API integration using Redux Toolkit, RTK Query, React Query, and REST APIs. I have led frontend migrations and refactoring initiatives that reduced API errors, processing time, and application load times.

I care about quality and scalable delivery practices, using tools such as Vite, Webpack, Git, Storybook, Docker, Jest, and React Testing Library. I am open to remote opportunities and relocation.

Skills

20 capabilities

Tech stack & tools

Working toolkit

Experience

Career history

Senior Frontend Engineer STATEIS

Owned the frontend architecture for a real-time media platform using React, Next.js, and WebSockets. Independently designed and delivered production features.

Achieved synchronization below 200 ms across multiple rooms. Reduced data processing time by 40% through refactoring and optimization.

Frontend Developer Everypixel

Built the frontend for an AI image, video, and motion generation platform integrating nine providers. Initially developed core functionality with Vue.js Composition API and later migrated major areas to React and Vite.

Implemented HTTP streaming and real-time progress tracking. Reduced load time by 40%, lowered form abandonment by 22%, and built a reusable component library.

Frontend Developer Primsocbank

Developed complex user interfaces and forms for a transaction-heavy banking product. Worked on large-scale frontend functionality and form workflows.

Led migration from Redux to Redux Toolkit and RTK Query, reducing API errors by 28%. Refactored large forms from approximately 2,500 lines to about 300 lines of code.

Frontend Developer T-Systems International

Built complex enterprise forms, filters, and reusable UI components for enterprise solutions. Contributed to scalable frontend interface development.

Improved application performance through optimization, reducing load time by 35%.

Education

Learning history

Saint Petersburg State University of Aerospace and Instrumentation

B.Sc., Engineering

Bachelor of Science degree in Engineering.

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