Senior Data Scientist

Trustly

Data Scientist developing cutting-edge AI/machine learning models at Trustly for risk management. Collaborating with ML engineers and using advanced data analysis to optimize payment strategies.

Posted 5/7/2026full-timeRemote • 🇧🇷 BrazilSeniorWebsite

Tech Stack

Tools & technologies

JavaScriptPythonSparkSQL

About the role

Key responsibilities & impact

Develop novel, state-of-the-art AI and machine learning models to support risk strategies;
Recommend data-driven, risk-based business decisions to positively impact KPIs across Trustly's payment portfolio;
Conduct analysis to measure model performance, compare performance across multiple models, and influence model strategy and selection decisions;
Collaborate with ML Engineers to deploy AI/ML models and strategies in Trustly's decision engine;
Explore raw source data, perform feature research and engineering to support decisioning capabilities;
Support development and maintenance of risk modeling infrastructure, working closely with ML Engineers and MLOps;
Develop data- and business-driven risk prevention rules and strategies;
Monitor risk and decision trends and performance, providing ongoing optimization adjustments as needed.

Requirements

What you’ll need

University degree in mathematics, statistics, data science, or a comparable field of study;
Experience in Data Science, Machine Learning, and AI;
Experience developing statistical, machine learning, or AI models and running experiments;
Risk experience in financial services, fintech, or a similar industry;
Advanced skills in Python and SQL – Spark and JavaScript are a plus;
Understanding of feature engineering and the end-to-end model development lifecycle;
Strong English communication skills to interact with English-speaking business stakeholders;

Benefits

Comp & perks

Bradesco health and dental plan for you and your dependents with no co-pay;
Life insurance with enhanced coverage;
Meal and grocery vouchers;
Home office allowance;
Wellhub - platform providing access to fitness spaces and online classes;
Trustly Club - discounts at educational institutions and partner retailers;
English program - online group classes with a private teacher;
Extended maternity and paternity leave;
Birthday off (day off on your birthday);
Flexible hours / remote-first culture — you can work from any city in Brazil;
Welcome kit — Apple equipment (MacBook Pro, iPhone) and additional perks. Equipment may be purchased by employees according to internal policy;
Referral program - receive a reward if a candidate you refer is hired!

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

AImachine learningstatistical modelsfeature engineeringPythonSQLSparkJavaScriptmodel performance analysisrisk modeling

Soft Skills

communicationcollaborationdata-driven decision makingoptimizationanalysis

Certifications

university degree in mathematicsuniversity degree in statisticsuniversity degree in data science