Senior React/TS Engineer for Complex Data - Remote

Cerebre; Poznań; Remote; PLN 240,000 - 320,000; Full time

Job summary

Cerebre is seeking a Senior Frontend Engineer with strong React and TypeScript experience. You will work on a large enterprise-grade frontend that handles complex, interconnected data across modules and visualizations.

You will collaborate with backend engineers, product, and design to shape solutions and push performance boundaries. The role emphasizes deep understanding of data structures, architecture, and performance, not just UI screens, with ownership from problem discovery to delivery in

Qualifications

• 7+ years of professional software development experience.
• Strong commercial experience with React and TypeScript.
• Strong JavaScript fundamentals.
• Proven experience building and maintaining large, complex web applications.
• Experience with data structures like trees/graphs/matrices.
• Ability to explain data representation and transformation.

Responsibilities

• Build and evolve complex functionality in a large React/TypeScript application.
• Develop highly interactive interfaces with complex state and dependencies.
• Work with structured, interconnected data across modules.
• Implement data navigation, transformation, filtering, and grouping logic.
• Understand data representation impacts architecture and performance.
• Ensure performance, memory usage, and scalability considerations.
• Collaborate with frontend and backend engineers, product, and design.
• Participate in architectural and technical decisions.
• Take ownership from investigation to delivery.
• Write clean, production-ready code.

Skills

Senior Frontend Engineer

React

TypeScript

JavaScript

Distributed data with complex state

Independent problem solving

English at least B2

Strong collaboration

Technical decision making

Frontend performance

Tools

.NET / C#

GitLab & CI/CD

D3.js

PixiJS

SVG/Canvas/WebGL

Job description

Cerebre is seeking a Senior Frontend Engineer with strong React and TypeScript experience. You will work on a large enterprise-grade frontend that handles complex, interconnected data across modules and visualizations.

You will collaborate with backend engineers, product, and design to shape solutions and push performance boundaries. The role emphasizes deep understanding of data structures, architecture, and performance, not just UI screens, with ownership from problem discovery to delivery in