Reddit

Staff Machine Learning Engineer, Ads Foundational Representations

Reddit
Apply
3 days ago

Base Salary

$230k - $322k/yr

Responsibilities

  • Provide technical leadership and mentorship to machine learning engineers, including driving designs, reviews, standards, and quality improvements.
  • Develop technical strategy for content-based embeddings and relevance in advertising.
  • Design and iterate on embedding models, aggregation pipelines, two-tower architectures, and sequence models.
  • Use and fine-tune local and third-party LLMs and VLMs to build representations and embedding systems.
  • Build data processing and model inference pipelines.
  • Conduct qualitative and quantitative evaluation through benchmarks, recommender-system metrics, and online experiments.
  • Ensure ML-system reliability, scalability, and performance through testing, monitoring, and model-management practices.
  • Review modeling and coding work and collaborate with cross-functional teams to translate business requirements into technical solutions.

Requirements

  • 7+ years of hands-on experience designing, training, evaluating, testing, and deploying industry-level machine learning models.
  • Staff-level technical leadership experience mentoring engineers, setting standards, and leading complex cross-functional projects without direct people-management authority.
  • Strong experience with large-scale content-rich NLP and computer-vision problems and embeddings.
  • A data-driven approach to ML-system development and willingness to investigate underlying metrics.
  • Familiarity with advertising, search, and/or recommender systems.
  • Experience with PyTorch or TensorFlow.
  • Preferred: experience with Python, PyTorch, Airflow, BigQuery, Ray, Kubernetes, Kafka, and GCP.
  • Preferred: hands-on experience building or fine-tuning LLMs.

Benefits

  • Comprehensive healthcare benefits and income replacement programs.
  • 401(k) with employer match.
  • Global benefits supporting workspace, professional development, and caregiving.
  • Family planning support, gender-affirming care, and mental health and coaching benefits.
  • Flexible vacation, paid volunteer time off, and generous paid parental leave.
  • Flexible-first work arrangement with remote work available from anywhere on the US East Coast in Eastern Time.
  • Base salary range of $230,000–$322,000, with potential equity in restricted stock units and, depending on the position, commission.
  • Interview recording, transcription, and summarization may occur, with an option to opt out before scheduled interviews.

Tech Stack

Apache AirflowApache KafkaGoogle BigQueryGoogle Cloud PlatformKubernetesPythonPyTorchTensorFlow

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.

Contact me