Lead Machine Learning Scientist
This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Lead Machine Learning Scientist based in the United States.
In this high-impact role, you will lead the design and deployment of machine learning systems that directly shape how users acquire, engage with, and retain financial products at scale. You will operate at the intersection of data science, product, marketing, and finance, translating business goals into advanced ML solutions that drive measurable growth outcomes. The role blends strategic leadership with hands-on modeling, requiring both deep technical expertise and strong product intuition. You will define the ML roadmap for marketing and growth, identifying opportunities where data-driven systems can unlock step-change improvements in performance. Working across a multi-product ecosystem, you will influence acquisition efficiency, personalization, and monetization strategies. This is a highly collaborative, fast-paced environment where your models will be embedded directly into production systems and customer-facing experiences. Your work will have a direct impact on millions of users navigating financial constraints.
Accountabilities:
In this role, you will define and lead the machine learning strategy for marketing and growth, identifying high-value opportunities and building scalable systems that improve acquisition, retention, and monetization. You will partner closely with cross-functional teams to ensure ML initiatives align with business priorities and financial outcomes. Key responsibilities include:
- Leading the end-to-end ML strategy for marketing and growth, including roadmap definition, prioritization, and execution across teams.
- Designing and deploying production-grade models such as propensity, churn prediction, customer lifetime value, and next-best-action systems.
- Improving targeting, segmentation, onboarding, personalization, and engagement across multiple financial products.
- Driving experimentation frameworks (A/B testing, uplift modeling) to measure incrementality and optimize marketing efficiency.
- Identifying and integrating new internal and external data sources to enhance model performance and business insight.
- Building scalable, measurable ML systems that are tightly integrated into marketing and product workflows.
- Establishing technical standards for modeling, validation, experimentation, and deployment across the ML lifecycle.
- Optimizing reward, incentive, and promotion strategies to maximize ROI while controlling costs and improving conversion efficiency.
- 7+ years of experience in machine learning, data science, or applied AI roles with production-scale impact.
- Proven experience building and deploying marketing-related ML models such as propensity, churn, LTV, and recommendation systems.
- Strong programming skills in Python and SQL, with hands-on experience using ML frameworks such as scikit-learn, TensorFlow, or PyTorch.
- Experience working with large-scale datasets and data platforms (e.g., Snowflake or similar environments).
- Strong understanding of marketing and growth metrics such as CAC, ROAS, conversion rates, and retention.
- Demonstrated ability to lead ambiguous, high-impact, cross-functional initiatives from concept to execution.
- Strong communication skills with the ability to translate technical concepts into clear business insights.
- Experience in fintech, multi-product ecosystems, or marketing measurement/attribution is highly valued.
- Competitive compensation package with performance-based incentives
- Equity participation in company growth and long-term success
- Remote-first work environment with flexible hours
- Comprehensive medical, dental, and vision insurance
- 401(k) retirement savings plan with employer matching
- Generous paid parental and caregiver leave
- Flexible PTO and company holidays
- Home office stipend to support remote setup
- Financial wellness resources, including access to advisors
- Company-wide in-person and virtual team events
- Opportunity to work on impactful products serving millions of users.
Requirements
This role requires deep expertise in machine learning and applied data science, combined with strong business acumen and the ability to lead complex, cross-functional initiatives. The ideal candidate is both strategic and hands-on, capable of owning models from design through production deployment. You should bring: