Senior Staff Machine Learning Systems Engineer (Ads ML Platform)

Location: Remote - United States

Salary: $292,500–$409,500 USD base salary per year, plus potential equity and commission depending on the position offered.

Company

Reddit operates a large-scale community platform with more than 100,000 active communities and approximately 130 million daily active unique visitors.

What you will do

• Own the technical strategy for the end-to-end Ads ML engineering lifecycle, beginning with feature development, training data, offline experimentation, and model iteration.
• Define architecture and technical standards for batch and streaming computation, backfills, data lineage, quality, observability, and online/offline consistency.
• Build platform abstractions and workflow automation that make ML development faster, safer, more reliable, and more self-service.
• Extend the platform strategy into model serving and online experimentation workflows.
• Partner with Ads, ML Platform, Data Platform, modeling, product, and engineering teams to drive execution and clarify ownership.
• Mentor Staff and senior engineers while raising architecture and operational standards.

Requirements

• 8+ years of experience in infrastructure, distributed systems, ML platforms, data platforms, or large-scale backend systems.
• 4+ years building or operating production ML infrastructure, feature platforms, training data systems, experimentation systems, or large-scale data pipelines.
• Experience leading broad, ambiguous, multi-team platform initiatives from strategy through adoption.
• Experience building platforms used by ML engineers, data scientists, or product teams developing production ML systems.
• Deep experience with ML platforms, feature platforms, training data, experimentation, developer infrastructure, or distributed data infrastructure.
• Experience with technologies such as Spark, Flink, Kafka, Ray, Airflow, Iceberg, Kubernetes, BigQuery, Snowflake, or Databricks.

Culture & Benefits

• Flexible workforce with remote work available in countries where Reddit has a physical presence.
• Comprehensive healthcare benefits and income replacement programs.
• 401(k) with employer match and global benefit programs.
• Flexible vacation, paid volunteer time off, and generous paid parental leave.
• Family planning support, gender-affirming care, and mental health and coaching benefits.