Senior Frontend Engineer (TextCortex AI)

text.cortex; Berlin; Vor Ort; EUR 90.000 - 130.000; Vollzeit

Zusammenfassung

text.cortex is seeking a senior frontend developer to own the frontend stack for our AI knowledge platform built with React and TypeScript. You will collaborate with product and design, own feature development from concept to release, and drive quality with tests and peer reviews.

As a senior, you will mentor junior developers, optimize performance, and work with backend engineers to ensure seamless API integration.

Qualifikationen

• 5+ years of frontend development experience
• Expertise in React and TypeScript
• Strong focus on UI/UX and accessibility
• Experience with testing and code reviews
• Mentor junior developers and drive best practices

Aufgaben

• Own frontend design and implementation for the AI knowledge platform
• Translate user needs into features from concept to release
• Collaborate with backend to integrate APIs
• Improve frontend tooling and developer experience
• Mentor and lead by example to ship high-quality code

Kenntnisse

React

TypeScript

UI/UX

Testing

Mentorship

Performance

Tools

Node.js

REST/GraphQL

Git

Jobbeschreibung

• Lead Frontend Development: Own the design and implementation of intuitive, responsive UIs for our AI knowledge platform using React and TypeScript, impacting thousands of users daily from day one
• Feature Ownership: Work closely with product and design teams to translate user needs into features - from concept, through architectural design, to polished release. you'll build everything from rich web app interfaces to Chrome extension features, with an eye for detail and robustness
• Code Quality & Performance: Write clean, maintainable code and unit tests, and conduct peer code reviews to ensure a high-quality codebase. Optimize for performance and scalability so our frontend remains fast and stable as usage grows
• Cross-Stack Collaboration: Collaborate with backend engineers to integrate APIs seamlessly and influence overall architecture. you'll frequently dive into the full stack to ensure end-to-end excellence in delivering features
• Innovation & Improvement: Continuously improve our frontend tooling and developer experience. We experiment with new technologies - even leveraging AI coding agents like Cursor to complete complex tasks in hours- so you'll be encouraged to automate, innovate, and bring in best practices that push our velocity and quality forward
• Mentorship: As a senior member, guide and mentor junior developers by sharing knowledge and leading by example. Foster an environment where "no endless meetings, no debugging marathons - just shipping great code" is the norm

Tooling & Workflow

Proficiency with modern development tools (Git, CI/CD pipelines, testing frameworks). Bonus: you already use or are excited to use AI-based dev tools (our engineers often pair program with AI - e.g. GitHub Copilot or Cursor - to boost productivity!)

User-Centric Approach

Eye for great UI/UX and empathy for the end user. You think beyond just "making it work" - you strive to make it delightful and intuitive

Full-Stack Familiarity (Bonus)

While your focus is frontend, you can navigate backend code when needed. Experience with Node.js, REST/GraphQL APIs, or cloud infrastructure is a plus. It helps you understand the full picture and collaborate effectively

Quality Mindset

Strong commitment to code quality - you write clean, readable code and cover critical logic with tests. You've driven code reviews and appreciate constructive feedback to uphold a high engineering standard

Expertise in React & TypeScript

You have extensive experience (5+ years or equivalent skill) building modern web applications with React. You're fluent in TypeScript and care about type-safe, well-structured code as part of your craft

Frontend Architecture

Deep understanding of state management (hooks, context, etc.), component design, and performance optimization. You can design frontend architecture that scales to large, complex applications without sacrificing maintainability

Debugging & Problem Solving

Ability to quickly diagnose and fix issues across the stack. You're comfortable with browser dev tools, performance profiling, and resolving tricky asynchronous bugs or memory leaks in a complex SPA