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Reddit Backed by a16zBacked by Sequoia
28 views 4 hours ago

Principal Data Scientist, Ads

Open 133d RemoteNorth AmericaContractPrincipal 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 Principal Data Scientist to lead the long-term scientific strategy for its advertising platform — defining measurement, prediction, and optimization frameworks for ads auctions, targeting, and advertiser LTV. The role relies heavily on statistics, econometrics, causal inference, machine learning, Python/R, and SQL at large scale.

A/B Testing AI Analytics Causal Inference Data Science +5 skills
268K – 365K $
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Reddit Backed by a16zBacked by Sequoia
35 views 4 hours ago

Senior Machine Learning Systems Engineer

Open 133d RemoteNorth AmericaContractSenior 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 ML Infrastructure Engineer on Reddit's ML Platform team, building and scaling the infrastructure behind recommendations and content discovery. Day-to-day work spans MLOps lifecycle design, graph ML platform development, distributed GPU training optimization, and large-scale batch data pipelines using Python, PyTorch, Ray, Kubernetes, Spark, and GCP.

AI BigQuery Cloud Data Warehousing Distributed Training +14 skills
217K – 303K $
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Reddit Backed by a16zBacked by Sequoia
27 views 4 hours ago

Senior Software Engineer, Ads

Open 133d RemoteNorth AmericaContractSenior 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 backend engineer on Reddit's Ads organization, building microservices, APIs, and distributed real-time systems for advertiser products like ads.reddit.com. Day-to-day work spans Go, Python, and Scala services plus data infrastructure like Kafka, Spark, Kubernetes, and Postgres.

AI API BigQuery C++ Distributed Systems +11 skills
191K – 267K $
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Reddit Backed by a16zBacked by Sequoia
30 views 4 hours ago

Senior Staff Machine Learning Engineer, GenAI Platform

Open 133d RemoteNorth AmericaContractStaff 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 Senior Staff ML Engineer to lead the vision, architecture, and roadmap of its large-scale GenAI Platform, including the LLM Gateway (unified APIs, rate/token limits, intelligent failover), enterprise RAG, and agentic AI workflows. Core stack includes Kubernetes, AWS/GCP cloud infra, Terraform, Go, and Python, plus MLOps/LLMOps practices.

Agentic AI AI API AWS CI/CD +14 skills
293K – 410K $
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Reddit Backed by a16zBacked by Sequoia
31 views 4 hours ago

Software Engineer, Ads

Open 133d RemoteNorth AmericaContractMiddle 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.
Canada

Mid-level backend engineer on Reddit's Ads organization (remote in Ontario, Canada), building microservices, distributed systems, and real-time data pipelines that power advertiser-facing products like ads.reddit.com. Core stack includes Go, Python, Scala, Spark, Kafka, Postgres, BigQuery, Redis, and Kubernetes.

AI API BigQuery C++ Data Science +15 skills
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Reddit Backed by a16zBacked by Sequoia
32 views 4 hours ago

Software Engineer, Ads

Open 133d RemoteNorth AmericaContractMiddle 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

Mid-level backend engineer on Reddit's Ads organization, building the microservices, APIs, and distributed data-intensive systems behind ads.reddit.com — ad serving, interactive ad experiences, and real-time campaign measurement. Core stack: Go, Python, Scala, Spark, Kafka, Postgres, Redis, Kubernetes.

AI API BigQuery C++ Distributed Systems +11 skills
164K – 230K $
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Reddit Backed by a16zBacked by Sequoia
27 views 4 hours ago

Staff Machine Learning Engineer, Consumer

Open 133d RemoteNorth AmericaContractStaff 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
26 views 4 hours ago

Staff Machine Learning Systems Engineer

Open 133d RemoteNorth AmericaContractStaff 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 Staff ML Systems/Infrastructure Engineer to build and lead the platform powering large-scale ML: MLOps lifecycle tooling, a graph ML codebase, GPU training performance tuning, and pipelines for graph data with billions of nodes. Core stack includes Python, PyTorch/TensorFlow, Ray, Kubernetes, GCP (BigQuery, GCS), Terraform, and Apache Beam/Spark.

AI BigQuery Cloud Data Warehousing Distributed Training +14 skills
230K – 322K $
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Reddit Backed by a16zBacked by Sequoia
26 views 4 hours ago

Staff Product Security Engineer

Open 133d RemoteNorth AmericaContractStaff 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 Staff Product Security Engineer to build secure frameworks, guardrails, and developer-workflow controls (including for AI-assisted coding) that prevent vulnerability classes from reaching production. Day-to-day involves platform-level security automation, product security reviews, and cross-team architecture influence using Go, Python, or JS/TS.

Agentic AI AI Authentication Automation CI/CD +5 skills
217K – 304K $
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Reddit Backed by a16zBacked by Sequoia
22 views 4 hours ago

Staff Software Engineer, Onboarding

Open 133d RemoteNorth AmericaContractStaff 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 engineer on Reddit's Onboarding team, owning the backend behind every new user's first experience: signal-collection systems, ML-powered personalization pipelines, and experimentation infrastructure. Day to day: set technical strategy, run rigorous A/B tests, and partner with Relevance, Feeds, and ML teams at scale.

AI Data Science Machine Learning Prototyping
217K – 303K $
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