Senior Staff Machine Learning Engineer

Summary

Join Reddit's Advertiser Optimization team as a Senior Staff Machine Learning Engineer and build cutting-edge bidding optimization systems. You will lead a team of 15+ engineers, designing new bid and budget optimization products and algorithms. Leverage your expertise in control systems, reinforcement learning, and machine learning to improve advertiser outcomes. Collaborate with cross-functional teams and contribute to the long-term direction of the team. Reddit offers a flexible work environment, with options for remote work from the US or Canada, and a comprehensive benefits package.

Requirements

• 10+ years of contributing high-quality code to production systems that operate at scale
• 2+ years of experience operating as Senior Staff engineer
• 5+ years of experience building control systems, PID controllers, multi-armed bandits, reinforcement learning algorithms, or bid/pricing optimization systems
• Experience leading large engineering teams and collaborating with cross-functional partners is required
• Significant experience in one or more general-purpose programming languages like Java, Python, Go, Scala, C++ or similar
• Experience with Data processing frameworks like Spark, Flink, Kafka, Druid, etc
• Experience with a cloud service provider like AWS or GCP
• Experience with Tools: Kubernetes, Drone, CircleCI, Spinnaker, Argo, Airflow, Docker, Thrift
• Experience with Datastores: ElasticSearch / Amazon OpenSearch, Redis, Postgres, Cassandra, BigQuery
• Experience with a machine learning modeling framework like Tensorflow or PyTorch
• An adept communicator and has experience communicating with and updating executives

Responsibilities

• Building Reddit-scale optimizations to improve advertiser outcomes using cutting-edge techniques in the industry
• Leverage live auction data and model predictions to adjust campaign bids in real time
• Incorporate knowledge of the Reddit ads marketplace into budget pacing algorithms powered by control & reinforcement learning systems
• Lead a team of 15+ engineers on designing new bid & budget optimization products and algorithms as well as conducting rigorous A/B experiments to evaluate the business impact
• Actively participate and work with other leads to set the long term direction for the team, plan and oversee engineering designs and project execution

Preferred Qualifications

• Experience designing optimization algorithms in an ad serving platform and/or other marketplaces is preferred
• Experience with state of the art control systems, reinforcement learning algorithms is a strong plus

Benefits

• Comprehensive Healthcare Benefits
• 401k Matching
• Workspace benefits for your home office
• Personal & Professional development funds
• Family Planning Support
• Flexible Vacation (please use them!) & Reddit Global Wellness Days
• 4+ months paid Parental Leave
• Paid Volunteer time off
• Medical, dental, and vision insurance
• 401(k) program with employer match
• Generous time off for vacation
• Parental leave