Senior UI Engineer, AI Visualization & Dashboards

Mastercard; Swords; On-site; EUR 85,000 - 110,000; Full time

Job summary

Mastercard is seeking a Senior UI Developer to join an AI product team building cutting edge foundation model capabilities with enterprise wide impact. You'll design and build the applications that bring advanced AI capabilities to life, turning powerful model outputs into clear, intuitive, and interactive experiences for the people who rely on them.

You will join a team of AI engineers, software developers, data scientists and MLOps to bring these capabilities to market.

Qualifications

• Strong, production-level frontend development experience in React and/or Python-based data-app frameworks (Streamlit or Dash).
• Experience designing component architecture, state management, and maintainable long-term apps.
• Experience integrating frontend with REST APIs, including auth, async jobs, and API versioning.
• Familiarity with visualization libraries (D3.js, deck.gl, Plotly).
• Familiarity with Databricks Apps hosting and integrating React/Streamlit/Dash apps.

Responsibilities

• Design and build advanced, interactive visualization tooling for embeddings and model outputs.
• Develop self-service applications for end users, including job submissions and result retrieval via API layer.
• Create prototypes for future versions and executive demos.
• Build internal tooling for AI teams to streamline product advancement.
• Ensure frontend code quality, testing, and documentation to engineering standards.
• Collaborate with backend/data/AI engineers on interface requirements.
• Support production issues spanning frontend and backend layers.

Skills

React

Python data-apps

Streamlit

Dash

REST APIs

UI/UX instincts

Testing

Communication with backend/data/AI

Frontend architecture

Tools

Databricks Apps hosting

Job description

Mastercard is seeking a Senior UI Developer to join an AI product team building cutting edge foundation model capabilities with enterprise wide impact. You'll design and build the applications that bring advanced AI capabilities to life, turning powerful model outputs into clear, intuitive, and interactive experiences for the people who rely on them.

You will join a team of AI engineers, software developers, data scientists and MLOps to bring these capabilities to market.