Senior Frontend Engineer at TextCortex AI (Berlin, On-Site)

Are you a senior developer who crafts elegant frontends with React & TypeScript and thrives in an engineering culture of innovation and ownership? At TextCortex AI, you'll join a core team of ambitious builders on a mission to transform how organizations harness AI. We've scaled from a few thousand users to millions in just two years, earning recognition as a Top 10 AI product of 2025 on G2 and serving over 2 million users. As a Senior Frontend Engineer, you will have a significant impact on a product at the forefront of AI, working alongside passionate engineers in Berlin who set high standards for code quality, product thinking, and continuous improvement.

Tasks

1. 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.
2. Feature Ownership: Collaborate with product and design teams to translate user needs into features, from concept through architectural design to polished release. Build interfaces and Chrome extension features with attention to detail and robustness.
3. Code Quality & Performance: Write clean, maintainable code and unit tests, conduct peer reviews, and optimize for performance and scalability to ensure a fast, stable frontend as usage grows.
4. Cross-Stack Collaboration: Work with backend engineers to integrate APIs seamlessly and influence overall architecture, often diving into full-stack development for end-to-end excellence.
5. Innovation & Improvement: Continuously enhance frontend tooling and developer experience, experimenting with new technologies, including AI coding agents like Cursor, to automate, innovate, and improve velocity and quality.
6. Mentorship: Guide and mentor junior developers, share knowledge, and lead by example to foster an environment focused on shipping great code without unnecessary meetings or debugging marathons.

Requirements

• Technical Skills & Experience: Extensive experience (5+ years) with React and TypeScript, building modern web applications. Deep understanding of state management, component design, and performance optimization. Strong commitment to code quality, testing, and code reviews. User-centric approach with attention to UI/UX. Proficiency with modern development tools and workflows. Bonus: Experience with AI-based dev tools and full-stack familiarity with APIs or cloud infrastructure.
• Cultural Fit & Mindset: Product-focused, ownership-driven, entrepreneurial, proactive, collaborative, and a continuous learner. Embrace new tools and concepts, and share knowledge within a diverse engineering team.
• Berlin On-Site: This role is based in Berlin. Candidates should be currently in Berlin or willing to relocate. Relocation support available.

Key Skills

Building Construction, Civil & Structural Engineering, HVAC Design, Arabic-English Translation, Archicad

Employment Type: Full Time

Experience: 5+ years

Vacancy: 1

Senior Frontend Engineer • Berlin, Berlin, Germany