Senior Data Scientist

Summary

Join CI&T as a Data Scientist and contribute to optimizing API usage for a mortgage technology client. You will leverage your expertise in data science and machine learning to develop algorithms and models that minimize expensive API calls while maintaining effective verification processes. This role requires analyzing historical patterns, building predictive models, and collaborating with engineers to implement solutions. You will work with a nearshore team and directly impact cost efficiency and processing speed. The ideal candidate possesses a Master's degree, 5+ years of experience, and strong analytical skills. CI&T offers a competitive salary, remote work flexibility, and professional development opportunities.

Requirements

• Master's degree or higher in Data Science, Statistics, Mathematics, Computer Science, or related field
• 5+ years of professional experience in data science or machine learning roles
• Experience with optimization algorithms and decision tree-based approaches
• Proven track record of cost optimization through data analysis
• Experience analyzing API usage patterns and creating efficient workflows
• Strong knowledge of statistical analysis, probability, and experimental design
• Advanced or fluent English communication skills (both written and verbal) are essential for collaboration in a remote environment

Responsibilities

• Analyze historical patterns of third-party API usage in verification processes (income, employment, assets)
• Develop statistical models and algorithms to optimize the sequence and necessity of API calls
• Create intelligent "waterfall" strategies that minimize expensive API calls while maintaining verification quality
• Build predictive models to determine when certain verification services are likely to provide value vs. cost
• Design algorithms that can make real-time decisions on which verification services to call based on available data
• Quantify and track cost savings achieved through API call optimization
• Collaborate with engineers to implement your models and algorithms into production systems
• Develop metrics and KPIs to measure efficiency gains and cost savings
• Work with business stakeholders to understand verification requirements and translate them into optimization strategies
• Research and implement machine learning techniques to improve decision-making around third-party service utilization

Preferred Qualifications

• Experience with optimization problems, particularly cost or resource optimization
• Knowledge of decision theory and sequential decision-making
• Familiarity with financial service verification processes or systems
• Background in operations research or similar analytical field
• Programming skills in Python and experience with ML libraries (scikit-learn, TensorFlow, PyTorch)
• Experience with AWS services (SageMaker, Lambda, S3, etc.)
• Experience with A/B testing and experimental design
• Knowledge of data ethics and privacy considerations in handling sensitive data
• Prior experience working with international teams
• Understanding of how to balance business rules with cost optimization

Benefits

• Competitive salary based on experience and skills
• Remote work flexibility
• Professional development opportunities
• Collaborative and innovative work environment
• Opportunity to work with global clients on cutting-edge projects
• Be part of CI&T's renowned culture and growth trajectory
• Premium Healthcare
• Meal voucher
• Maternity and Parental leaves
• Mobile services subsidy
• Sick pay-Life insurance
• CI&T University
• Colombian Holidays
• Paid Vacations