io is a global technology service provider dedicated to building a more sustainable, independent, and equitable future. We partner with general companies across industries, including AI, blockchain, software, biotech, and education, to transform bold ideas into real, meaningful solutions.
Our expertise spans technology consulting, AI and Machine Learning development, Blockchain integration, and global team collaboration. With a worldwide network of specialists, we help organizations stay ahead in a rapidly evolving digital landscape.
Our commitment to innovation, sustainability, and social responsibility guides everything we do as we help clients build technologies that empower people, communities, and industries to thrive.
We are looking for a Finance Developer to join our team and help build an internal web platform that supports portfolio management for our finance and operations teams. finance and technology, you will turn financial data and business requirements into accurate, reliable tools. You will own features from end to end,



from data queries and calculation logic through to the user interface.
What you'll do Design, build and maintain platform features, including summary metrics, interactive tables and data visualisations.
Translate financial methodologies such as valuation, P&L; attribution, exposure and cost basis into clean, well-tested backend logic.
Write and optimise SQL queries against our cloud data warehouse.
Keep the platform fast and reliable through caching, performance tuning and robust error handling.
Work closely with finance and operations stakeholders to gather requirements, validate results and deliver improvements.
Backend: Python, FastAPI, Pydantic, Google BigQuery, Redis
Frontend: React, TypeScript, Vite, TanStack Query, Recharts, Tailwind CSS
Infrastructure: Google Cloud (Cloud Run), Google sign-in
Solid professional experience with Python, including building backend services or data applications.
Comfort writing non-trivial SQL, idea

📌 Python Finance Developer (Madrid)
🏢 UBQ
📍 Madrid