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Reddit Backed by a16zBacked by Sequoia
84 views last week

Staff Machine Learning Engineer, Consumer

Open 142d RemoteNorth AmericaContractStaff 5 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.Licensed NL sponsor — This employer appears on the IND public register of recognised sponsors for work and highly skilled migrants. The recognition belongs to the employer and is not a commitment to sponsor this role.H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.Canada LMIA employer — This employer was issued a positive Labour Market Impact Assessment by Employment and Social Development Canada in the last four quarters, through the High Wage, Global Talent or Permanent Resident streams. The approval belongs to the employer and is not a commitment to sponsor this role.
United States

Staff-level ML engineer at Reddit building end-to-end machine learning systems for consumer experiences — recommendations, search, notifications, content/user understanding, and LLM/GenAI-powered features — from research and modeling through large-scale production deployment, using Python, Golang, and frameworks like TensorFlow, PyTorch, and Hugging Face.

Agentic AI AI Airflow BigQuery Data Pipelines +22 skills
230K – 322K $
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Reddit Backed by a16zBacked by Sequoia
83 views last week

Staff Machine Learning Engineer, Ads Foundational Representations

Open 135d RemoteEurope, UKContractStaff 5 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.Licensed NL sponsor — This employer appears on the IND public register of recognised sponsors for work and highly skilled migrants. The recognition belongs to the employer and is not a commitment to sponsor this role.H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.Canada LMIA employer — This employer was issued a positive Labour Market Impact Assessment by Employment and Social Development Canada in the last four quarters, through the High Wage, Global Talent or Permanent Resident streams. The approval belongs to the employer and is not a commitment to sponsor this role.

Build multimodal embeddings and LLM-based representations for Reddit Ads, using NLP/CV models to power relevance, targeting, and ranking systems.

AI Airflow Automation BigQuery Data Science +12 skills
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Reddit Backed by a16zBacked by Sequoia
89 views last week

Staff Machine Learning Engineer, AI Security

Open 47d RemoteNorth AmericaContractStaff 6 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.Licensed NL sponsor — This employer appears on the IND public register of recognised sponsors for work and highly skilled migrants. The recognition belongs to the employer and is not a commitment to sponsor this role.H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.Canada LMIA employer — This employer was issued a positive Labour Market Impact Assessment by Employment and Social Development Canada in the last four quarters, through the High Wage, Global Talent or Permanent Resident streams. The approval belongs to the employer and is not a commitment to sponsor this role.
United States

Reddit is hiring a founding Staff Machine Learning Engineer on its AI Security team to lead the design, training, evaluation, and deployment of ML models that detect AI-related risks like prompt injection and jailbreaks. Day-to-day involves hands-on model development on Reddit's LLM Guardrails Platform using Python, PyTorch/TensorFlow, and distributed training pipelines, plus technical leadership

AI Data Lineage Data Pipelines Deep Learning Distributed Training +11 skills
230K – 322K $
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Reddit Backed by a16zBacked by Sequoia
48 views last week

Senior Staff Machine Learning Engineer, ML Understanding

Open 32d RemoteNorth AmericaContractStaff 5 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.Licensed NL sponsor — This employer appears on the IND public register of recognised sponsors for work and highly skilled migrants. The recognition belongs to the employer and is not a commitment to sponsor this role.H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.Canada LMIA employer — This employer was issued a positive Labour Market Impact Assessment by Employment and Social Development Canada in the last four quarters, through the High Wage, Global Talent or Permanent Resident streams. The approval belongs to the employer and is not a commitment to sponsor this role.
United States

Leads Reddit's next-generation user understanding initiative: designing and building a unified user representation layer (large-scale embeddings, interest/behavior modeling, LLM-based profiles) that powers personalization across Feeds, Search, Notifications, and Ads. Core tech: production ML, LLMs/foundation models, and large-scale serving infrastructure.

AI API Embeddings Generative AI LLM +2 skills
266K – 372K $
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Reddit Backed by a16zBacked by Sequoia
88 views last week

Machine Learning Engineer, Answers Relevance

RemoteNorth AmericaContract 6 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.Licensed NL sponsor — This employer appears on the IND public register of recognised sponsors for work and highly skilled migrants. The recognition belongs to the employer and is not a commitment to sponsor this role.H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.Canada LMIA employer — This employer was issued a positive Labour Market Impact Assessment by Employment and Social Development Canada in the last four quarters, through the High Wage, Global Talent or Permanent Resident streams. The approval belongs to the employer and is not a commitment to sponsor this role.
United States

Senior/Staff ML engineer on Reddit's Answers Relevance team, leading ML projects from idea to production — building large-scale retrieval/ranking, embeddings, RAG, and LLM-powered features. Core stack: Python (Golang a plus), TensorFlow/PyTorch/Hugging Face, and production ML systems.

Agentic AI AI Data Pipelines Data Science Embeddings +12 skills
217K – 322K $
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