[Hiring] Principal Research Scientist @Plata Card

Role Description

Plata is one of the fastest-growing fintech companies in the world. In just 3 years, we've grown to 3M+ customers and reached a $5B+ valuation. We're now strengthening our Risk & Decisioning core team and are looking for a Principal AI Engineer to set the technical bar and build best-in-class, production-grade models that materially move business metrics.

You will own our foundation model program end to end - from research direction to models running in production and driving real credit decisions.

• Your models directly move the numbers that matter: cost of risk, approval rates, and portfolio NPV across a fast-scaling credit portfolio.
• You'll work with one of the richest financial datasets in LATAM: billions of transactions and behavioral events across 3M+ customers, growing daily.

Challenges that await you

• Build an end-to-end foundation model over financial event sequences - transactions, credit bureau data, and in-app behavioral events with subsequent fine-tuning for downstream business tasks: underwriting (PD), credit limit strategy, fraud detection, collections, and propensity models.
• Drive technical decisions end-to-end: methodology → implementation → performance and latency → robustness, interpretability, and regulatory compliance.
• Take models from research to production: training infrastructure, evaluation frameworks, model serving, latency/cost optimization, and monitoring.
• Research state-of-the-art approaches in the industry, publish your own work, and speak at leading conferences.
• Mentor senior engineers and scientists; own technical standards for model development across the team (design reviews, evaluation methodology, deployment practices).
• Communicate results clearly to cross-functional stakeholders: product, risk, business, and leadership.

Qualifications

• Proven experience applying deep learning to sequential data.
• Strong foundation in mathematical statistics and probability theory.
• Deep understanding of machine learning algorithms (GBM, MLP, CNN, RNN, Transformers, etc.).
• Experience taking large models to production: distributed training, model serving, latency/cost trade-offs.
• Ability to strike a reasonable balance between solution complexity and practical applicability.
• Strong mathematical or technical education - degree in mathematics, physics, or CS from a top technical university.
• Kaggle Competitions Master/Grandmaster or equivalent (a plus); experience developing models in banking or consumer lending (a plus).
• Strong communication skills.

Benefits

• Relocation support to one of our hubs - Mexico, Cyprus, Serbia, Spain with assistance for the employee and their family.
• Flexible work from one of our offices or remote.
• Healthcare coverage.
• Education budget: language lessons, professional training and certifications.
• Wellness budget: mental health and fitness activity reimbursements.
• Vacation policy: 20 days of annual leave and paid sick leave.