Reddit

Senior Staff Machine Learning Engineer, Ads Ranking

Reddit
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4 hours ago
Remote, United StatesStaff+
H1B sponsor

Base Salary

$293k - $410k/yr

Responsibilities

  • Develop advanced machine learning models and agentic workflows that help teams design, train, evaluate, and improve them.
  • Use Claude, Cursor, and comparable AI-assisted development systems to investigate model behavior, generate and test hypotheses, automate analysis, and improve experiments.
  • Build reliable loops for data and label analysis, feature and embedding development, architecture comparison, hyperparameter optimization, error analysis, and experiment readouts.
  • Design evaluation harnesses covering model outcomes, workflow quality, correctness, reproducibility, regressions, cost, and latency.
  • Partner with product, data science, ML infrastructure, and engineering teams to connect modeling improvements to user and business outcomes.
  • Set technical direction across teams, mentor engineers, and improve modeling rigor and AI-assisted engineering practices.

Requirements

  • 9+ years of experience in ML engineering, applied ML, or a related field, with substantial production impact.
  • Senior Staff-level technical leadership experience and a record of influencing direction across teams.
  • Deep expertise in modeling fundamentals including data, objectives, architectures, optimization, evaluation, and experimentation.
  • Demonstrated use of agentic AI or AI coding tools to produce better ML outcomes rather than only faster code generation.
  • Ability to design guardrails and evaluations that make autonomous or semi-autonomous workflows trustworthy.
  • Strong coding ability in Python and fluency with modern machine learning frameworks and data tooling.
  • Clear, concise communication and a collaborative, low-ego approach to technical leadership.

Benefits

  • 100% remote opportunity, with hybrid or onsite work available at offices in New York, San Francisco, Los Angeles, and Chicago.
  • Competitive salary and equity options.
  • Medical, dental, and vision coverage, workplace perks, and a home office setup stipend.
  • 401(k) matching.
  • Flexible vacation policy.
  • Paid parental leave of 4+ months, family planning support, and paid volunteer time off.

Tech Stack

Categories

Reddit

About Reddit

5,001-10,000 employees

Reddit builds a social news and discussion platform organized into user-created forums (“subreddits”) for consumers, creators, and communities. It monetizes primarily through advertising tools for brands and self-serve advertisers, plus a Premium subscription; developers can access data via its API. Founded in 2005 and headquartered in San Francisco, Reddit became a public company on the NYSE in 2024 and hosts over 100,000 active communities.

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