Senior UI Developer: AI Platform Visualization

Mastercard; Clondalkin; On-site; EUR 80,000 - 110,000; Full time

Job summary

Mastercard is seeking a Senior UI Developer to join an AI product team. You will design and build frontend applications that translate complex model outputs into intuitive, interactive experiences, serving internal AI engineers and enterprise users.

You’ll work with AI engineers, software developers, data scientists and MLOps to bring capabilities to market, spanning internal tooling and customer-facing self-service tools.

Qualifications

• Experience building frontend applications with React at production level.
• Experience with Python-based data apps (Streamlit or Dash).
• Ability to design maintainable component architectures and state management.
• Experience consuming REST APIs with authentication and versioning.
• Strong data visualization skills with interactive tooling.
• Knowledge of Databricks Apps hosting and Unity Catalog integration a plus.
• Ability to communicate with backend, data, and AI engineers effectively.

Responsibilities

• Design and build advanced, interactive visualization tooling for embeddings and model outputs.
• Create self-service applications for end users with API integration.
• Develop prototypes for future product versions and demos.
• Maintain frontend code quality, testing, and documentation.
• Collaborate with AI and data engineers on tooling requirements.

Skills

React

Streamlit

Dash

REST APIs

D3.js

deck.gl

Plotly

Databricks Apps

SQL

Tools

Unity Catalog

CI/CD pipelines

Job description

Mastercard is seeking a Senior UI Developer to join an AI product team. You will design and build frontend applications that translate complex model outputs into intuitive, interactive experiences, serving internal AI engineers and enterprise users.

You’ll work with AI engineers, software developers, data scientists and MLOps to bring capabilities to market, spanning internal tooling and customer-facing self-service tools.