Reddit is seeking a Machine Learning Manager to lead the Auto-Bidding team within our PF&O (recommendations and forecasting) organization. In this role, you will build machine learning systems and data-driven recommendations for advertisers, develop forecasting tools for sales, define the technical vision, and mentor a team of engineers.
What You'll Do
- Define and execute the long-term roadmap for the Auto-Bidding team, balancing innovation, efficiency, and revenue impact.
- Collaborate with leadership to align technology investments with broader business objectives.
- Oversee the design, implementation, and maintenance of high-performance advertiser- and sales-facing products.
- Ensure systems meet or exceed accuracy goals, advertiser expectations, and system reliability standards.
- Recruit, mentor, and retain top engineering talent.
- Foster a collaborative, inclusive, and high-performing culture with a strong emphasis on technical mentorship and career development.
- Partner with Product Managers and other engineering teams to align technical work with product requirements and KPIs.
- Effectively communicate complex technical concepts to non-engineering stakeholders.
- Drive best practices for model quality, experimentation, system reliability, and operational excellence.
- Identify and implement opportunities to increase engineering velocity, reduce costs, and improve system performance.
What We're Looking For
- Significant experience managing engineering teams, ideally in machine learning or similarly technical domains.
- Extensive hands-on experience building and operating large-scale Ads or Marketplace systems.
- Demonstrated success in managing, mentoring, and growing teams.
- Skilled in hiring, performance management, and fostering diverse, inclusive environments.
- Familiarity with PID controllers, multi-armed bandits, reinforcement learning, or other bidding/pricing optimization approaches.
- Skilled in designing new bidding optimization algorithms and conducting A/B tests to evaluate business and marketplace impact.
- Knowledge of metric design, experimentation methodologies, and large-scale data analysis.
- Expertise in building and maintaining scalable systems, high-performance serving architectures, real-time streaming, and robust data pipelines.
- Familiarity with ads delivery, recommendations, targeting, or marketplace optimization systems.
- Ability to define a clear technical vision and lead day-to-day execution.
- Comfortable working across disciplines—engineering, product, data science—and communicating technical ideas to broad audiences.
Nice to Have
- Experience with real-time serving systems, model development, and optimization pipelines.
Benefits & Compensation
- Comprehensive Health benefits.
- Registered Retirement Savings plan with matching contributions.
- Income Replacement Programs.
- Family Planning Support.
- Gender-Affirming Care.
- Mental Health & Coaching Benefits.
- Flexible Vacation & Reddit Global Days Off.
Work Mode
This position operates in a local-country mode and is located Remote - Ontario, Canada.
Reddit is proud to be an equal opportunity employer, and is committed to building a workforce representative of the diverse communities we serve.
