Principal Frontend Engineer (m/f/d)

Key Responsibilities:

This role requires deep expertise in modern frontend technologies, strong leadership in shaping engineering practices, and the ability to influence product direction while delivering highly performant, scalable, and visually compelling applications. 

As a Principal Engineer, you will set technical standards, mentor other engineers, and collaborate closely with product, design, and backend teams to create an exceptional user experience for complex, data-intensive workflows. 

Responsibilities

• Define and evolve the frontend architecture and technology stack.
• Establish best practices for code quality, performance, security, and accessibility.
• Lead design reviews and technical discussions, ensuring alignment with product vision and platform goals.
• Drive adoption of modern AI-assisted tools to enhance productivity, code quality, and testing efficiency.
• Build advanced data-driven UIs, dashboards, and interactive visualizations.
• Drive the adoption of modern frontend frameworks, libraries, and tooling.
• Partner with product managers, designers, and backend engineers to translate complex requirements into intuitive solutions.
• Collaborate on design systems and component libraries for consistent, reusable UI patterns.
• Coach and mentor frontend engineers at all levels, fostering technical growth and craftsmanship.
• Champion the integration of AI/LLM-powered development practices across the team.
• Advocate for engineering excellence and innovation within the broader team.
• Contribute to shaping engineering culture and recruitment.

Requirements:

• Bachelor’s degree in information technology, Computer Science, Engineering or related field.
• 10+ years of professional frontend development experience, including at least 3 years in a lead or principal role.
• Expert knowledge of JavaScript/TypeScript, React ecosystem including state management libraries (MobX, Redux, etc.), build systems, UI components, etc....
• Proven experience in frontend architecture and system design for scalable enterprise applications.
• Hands-on expertise with performance optimization, rendering large datasets, and UI responsiveness.
• Familiarity with Echarts, AgGrid, ReactFlow, MonacoEditor or similar visualization libraries is highly desirable.
• Experience collaborating in cross-functional product teams, influencing both technical and product roadmaps.
• Strong communication skills with the ability to articulate technical concepts to non-technical stakeholders.
• Exposure to AI-assisted development workflows (e.g., code generation, automated testing, AI-driven refactoring) is a strong plus.

It would be awesome if you are also:

• Have a strong background in building data-intensive domain – transformations and/or analytics: dashboards, real-time visualizations, data pipelines, low-code transformations, etc...
• Experience building graph and/or state management applications or components (Using ReactFlow/XFlow or similar) 
• Have experience working with web sockets, building real-time collaborative tools on web.
• Familiar with core data management and data engineering concepts.
• AI models, python notebooks is something you like to play with as well.
• Have great communication skills and passion in technology and driving thing forward! 

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