Senior Machine Learning Engineer

Robinhood was founded on a simple idea: that our financial markets should be accessible to all. With customers at the heart of our decisions, Robinhood is lowering barriers and providing greater access to financial information. Together, we are building products and services that help create a financial system everyone can participate in.

The Lifecycle Marketing team is responsible for driving user & revenue growth for Robinhood. As we expand our suite of product offerings, we focus on a personalized approach to driving growth & engagement by helping each user discover & engage with the right products and features within Robinhood. We are looking for a senior MLE to lead our personalization efforts, conceive, build & execute on a roadmap for how to effectively personalize our experiences to drive user growth & engagement.

• Model Development and Implementation:
  Develop and implement scalable machine learning models focusing on advanced ranking and recommendation systems, including expertise in Collaborative Filtering, Content-Based Filtering, and Hybrid models, alongside proficiency in Learning to Rank (LTR) techniques for effective prioritization. Additionally, design reinforcement learning algorithms and apply multi-armed bandit strategies to optimize decision-making in dynamic environments, balancing exploration and exploitation.
• A/B Testing and Experimentation:
  Design and conduct A/B tests to assess the performance of different machine learning models. This includes setting up the test environment, monitoring performance, and analyzing results.
• Data Analysis and Insight Generation:
  Analyze experimental data to extract actionable insights. Use statistical techniques to validate the findings and ensure their relevance and accuracy.
• Cross-Functional Collaboration:
  
  Work closely with other engineering teams, data scientists, and the marketing team to integrate machine learning models into the product and ensure they meet business requirements.
• Documentation and Reporting:
  Maintain comprehensive documentation of models, experiments, and findings. Prepare reports and presentations to communicate results to different stakeholders.

• 5+ years of applied ML experience product ionizing ML models with 2+ years focused on recommendations, ranking or personalization projects.
• A fervent interest in exploring and applying AI and ML technologies.
• Strive to solve sophisticated engineering problems that drive business objectives.
• Solid technical foundation enabling active contribution to the design and execution of projects and ideas.
• Familiarity with architectural frameworks of large, distributed, and high-scale ML applications.
• Proven experience in ML with a focus on ranking, recommendation systems, and reinforcement learning, including applications in targeted advertising.
• Expertise in leveraging diverse communication platforms, such as email campaigns, push notifications, and in-app promotions.
• Proficiency in Python, SQL, PyTorch, or Tensor Flow.
• Experience with Spark, Kafka, and Kubernetes is also desirable.
• Ideally you have experience in the Finance sector.

• Market competitive and pay equity-focused compensation structure
• 100% paid health insurance for employees with 90% coverage for dependents
• Annual lifestyle wallet for personal wellness, learning and development, and more!
• Lifetime maximum benefit for family forming and fertility benefits
• Dedicated mental health support for employees and eligible dependents
• Generous time away including company holidays, paid time off, sick time, parental leave, and more!
• Lively office environment with catered meals, fully stocked kitchens, and geo-specific commuter benefits