Joana Pereira

Senior Data Scientist, Pebble HQ - survival analysis · XGBoost · Python

Pebble HQ

Lisbon, Portugal · WET (UTC+0)

7+ years experience

Bocconi University

English, Portuguese

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Overview

I work on credit risk modelling at Pebble HQ in Lisbon. Wrote the metric definitions the leadership team reviews every week. Took the risk models through 3 regulatory model reviews. Jazz piano, badly.

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Travels often; replies within 48 hours

Skills

model governancePythoncredit scoringXGBoostSQLsurvival analysis

Experience

Senior Data Scientist
Aug 2022 - Present
Pebble HQ · 4 yr 2 mo · Full-time · Lisbon, Portugal
- Took the risk models through 2 regulatory model reviews.
- Built the risk models now used in 9 product decisions a quarter.
Data Scientist
Oct 2020 - May 2022
Glovo · 1 yr 7 mo · Full-time · Lisbon, Portugal
- Took the risk models through 3 regulatory model reviews.
Data Scientist
Oct 2019 - Oct 2020
Spotify · 1 yr · Full-time · Lisbon, Portugal
- Took the risk models through 5 regulatory model reviews.
- Replaced 83 hand-built dashboards with one metrics layer people trust.

Projects

Side project: a commute planner

2025

Built with model governance and SQL. 847 people used it last year.

Credit risk modelling benchmark

2024

Reproducible benchmarks comparing model governance and Python on real workloads.

References

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Education

Bocconi University
BSc, Physics
2015 - 2018

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