Senior ML Engineer: End-to-End, Large-Scale Personalization

Reddit; Oregon; Hybrid; USD 217,000 - 303,000; Full time

Benefits offered by this job

Comprehensive Healthcare Benefits and

401k with Employer Match

Global Benefit programs

Family Planning Support

Gender‑Affirming Care

Mental Health & Coaching Benefits

Flexible Vacation & Paid VolunteerTime

Generous Paid Parental Leave

Job summary

Reddit is seeking a Machine Learning Engineer to design, build, and deploy production‑grade ML models at scale. You will own the full lifecycle from problem definition to monitoring and retraining, building scalable pipelines and ensuring reliability across systems.

You will collaborate with Product, Data Science, Infrastructure, and Engineering teams to translate complex problems into practical ML solutions and advance ranking, recommendations, and search relevance across Reddit’s vast content

Qualifications

• 3-5+ years of experience building, deploying, and operating machine learning systems in production.
• Strong programming skills in Python, Java, Go, or similar languages, with solid software engineering fundamentals.
• ML Fundamentals: a strong grasp of algorithms from classic statistical learning to DL architectures.
• Hands-on experience with modern ML frameworks (e.g., PyTorch, TensorFlow).

Responsibilities

• Design, build, and deploy production‑grade machine learning models and systems at scale.
• Own the full ML lifecycle: from problem definition and feature engineering to training, evaluation, deployment, and monitoring.
• Build scalable data and model pipelines with strong reliability, observability, and automated retraining.
• Work with large‑scale datasets to improve ranking, recommendations, search relevance, prediction, content/user understanding, and optimization systems.
• Partner cross‑functionally with Product, Data Science, Infrastructure, and Engineering teams to translate complex problems into ML solutions.
• Improve system performance across latency, throughput, and model quality metrics.
• Research and apply state‑of‑the‑art machine learning and AI techniques, including deep learning, graph & transformers based, and LLM evaluation/alignment
• Contribute to technical strategy, architecture, and long‑term ML roadmap

Skills

Python/Java/Go

ML Fundamentals

ML Frameworks

Large-scale systems

Cross-functional work

Education

Advanced degree in CS/ML

Tools

PyTorch

TensorFlow

Spark

Kafka

BigQuery

Job description

Reddit is seeking a Machine Learning Engineer to design, build, and deploy production‑grade ML models at scale. You will own the full lifecycle from problem definition to monitoring and retraining, building scalable pipelines and ensuring reliability across systems.

You will collaborate with Product, Data Science, Infrastructure, and Engineering teams to translate complex problems into practical ML solutions and advance ranking, recommendations, and search relevance across Reddit’s vast content