Staff Data Scientist

Summary

Join Wellhub's Fraud Prevention team in Brazil as a Staff Data Scientist! This role focuses on building and deploying machine learning models to identify and remove fraudulent actors from the platform. You will own the entire model lifecycle, from ideation to production monitoring, and collaborate with various teams to prevent fraud. The ideal candidate possesses strong data science experience, proficiency in Python and SQL, and excellent communication skills. Wellhub offers a flexible work environment, comprehensive benefits, and opportunities for career growth. The company prioritizes employee wellbeing and provides a supportive, inclusive culture. Prior experience in data science, MLOps, and Python is mandatory.

Requirements

• Bachelor's degree in Computer Science, Computer Engineering, or related discipline or equivalent practical experience
• You have experience as a data scientist delivering consistent results in a business setting
• Knowledge of machine learning (supervised and unsupervised) algorithms and have hands-on experience implementing and prototyping them
• A lifelong learner passionate about emerging technologies, with proficiency in Python and SQL
• You have strong communication skills explaining technical concepts to different audiences
• You care about driving business impact, data-driven development, and experimentation
• Output-driven with experience working in scenarios with high uncertainty
• Naturally curious, with a knack for team work
• Proficient experience with fraud and anomaly detection models
• English proficiency

Responsibilities

• Build production systems that identify and remove fraudsters from Wellhub
• Own the end-to-end lifecycle of machine learning models, from ideation and prototyping to production deployment and monitoring
• Help to prototype, implement and productionize new anti fraud solutions at scale
• Ensure successful deliveries, and promote the long-term technical health of our journeys
• Ensure a high bar on code quality standards, making sure the team are proud of their work
• Apply technology best practices
• Take part in incident resolution and troubleshooting in the production environment
• Live the mission: inspire and empower others by genuinely caring for your own wellbeing and your colleagues. Bring wellbeing to the forefront of work, and create a supportive environment where everyone feels comfortable taking care of themselves, taking time off, and finding work-life balance

Preferred Qualifications

Experience working with public clouds, especially AWS

Benefits

• Health, dental, and life insurance
• At Wellhub, flexibility fosters a happier, healthier, and more productive work environment for everyone. As a Flexible First company, we offer two work model options: flexible hybrid and full remote, and make the office a place for collaboration, community, and team building. The model for this role can be discussed with your recruiter and hiring manager. We offer all employees a home office stipend and a monthly flexible work allowance to help cover the costs of working from home
• Wellhubbers and their leaders can make the best decisions for their scope. This includes flexibility to adjust their working hours based on their personal schedule, time zone, and business needs
• We believe in our mission and encourage our employees and their families to take care of their wellbeing too. Access onsite gyms and fitness studios, digital fitness programs, and online wellness resources for meditation, nutrition, mental health support, and more. You will receive the Gold plan at no cost, and other premium plans will be significantly discounted
• Vacations after 6 months and 3 days off per year + 1 day off for each year of tenure (up to 5 additional days) + extra day off for your birthday
• Welcoming a new child is one of the most special moments in your life and we want our employees to take the time to be present and enjoy their growing family. We offer 100% paid parental leave to all new parents and extended maternity leave
• Outstanding opportunities for personal and career growth. That means we maintain a growth mindset in everything we do and invest deeply in employee development