Remote US role leading high-impact initiatives in ads measurement, identity graph methodology, large-scale experimentation (lift/attribution), and signal strategy. Requires advanced degree and significant industry experience (MS: 10+ years or PhD: 6+ years). Strong skills in probabilistic modeling, causal inference, statistical programming (Python/R), SQL, machine learning, and cross-functional leadership.

Reddit is hiring a contract Strategic Community Specialist to join the International Community team to grow local communities in France. Responsibilities include cultivating and recruiting volunteer moderators, building and scaling a consumer growth playbook, running experiments, analyzing data and KPIs, and working cross-functionally with Product, Engineering, Marketing, Safety, and BD. Requires deep knowledge of French culture, proficiency in English, and 5+ years of relevant experience; candidate should be based in the UK or Ireland.

Own the "Reddit Benchmark" and post-training evaluation science for Reddit's foundational LLMs: define evaluation methodology across safety, reasoning, retrieval/representation, and Reddit-specific knowledge; ensure statistical rigor and reliability of evals; design model-as-a-judge approaches; set SFT/CPT recipes and checkpoint selection; drive synthetic data strategy and partner with Safety Engineering.

Lead and apply advanced statistical and machine learning methods (causal inference, experimental design, anomaly detection) on large-scale ad data. Collaborate with product, engineering, and other data scientists to define metrics, build models, analyze trends, and communicate recommendations. Requires an advanced quantitative degree and several years of industry data science experience; experience with Spark/Hadoop/Hive/BigQuery, Python or R, ML libraries, and SQL.

Lead and execute global tax planning strategy, own cash tax and effective tax rate forecasting, drive tax incentives and mitigation efforts, oversee tax due diligence for M&A and post‑acquisition integration, support quarterly/annual income tax provisions, implement tax process improvements/automation, and monitor global tax legislation. Requires JD and/or CPA, 9+ years corporate tax experience (including ≥5 years public accounting), proficiency with Excel and Google Workspace; Alteryx experience is a plus.

Role in Reddit's Marketing Sciences/Revenue organization to lead advertising measurement for mobile app clients. Responsibilities include executing measurement studies (MTA, MMM, brand lift, conversion tracking), consulting with clients and internal teams, developing benchmarks and best practices, and driving insights to grow app-focused advertising. Requires 6+ years in advertising or analytics and familiarity with measurement methodologies and statistical methods.

Work on Reddit's storage and caching infrastructure serving hundreds of millions of queries per second and hundreds of terabytes across thousands of machines. Responsibilities include designing and maintaining data storage systems (reads/writes), building tooling and automation for operations, collaborating with ML/AI/Search stakeholders, and mentoring other engineers. Requires 5+ years building internet-scale software and experience with languages such as Golang, Python, C++, or Java.

Lead consumer-focused data science to inform product strategy by identifying opportunities, designing metrics, driving experimentation (design through analysis), building ETL and self-serve tools, and mentoring junior data scientists. Requires an advanced degree (MS with 10+ years or PhD with 6+ years), expert SQL, familiarity with Python/R, causal inference, strong communication with senior stakeholders. Base salary range listed: $217,000–$303,900 USD per year.

Reddit is hiring a mid-level backend engineer for the Ads organization to build and maintain microservices, APIs, distributed and real-time data systems that power ads.reddit.com and interactive ad experiences. Responsibilities include collaborating with product, platform and data teams, improving operational stability, delivering dashboards and building extensible components. Requires 3+ years of software development experience. Base salary range listed: $164,200–$229,900 USD per year.

Reddit seeks a mid-level backend engineer for its Ads organization (remote, Ontario, Canada listed). Responsibilities include building microservices and APIs, distributed and real-time data-intensive systems, and collaborating with product and platform teams. Tech stack includes Go, Python, Scala, Spark, Kafka, Postgres, BigQuery, Redis, Druid, Kubernetes, Argo and Docker. Requires 3+ years of software development experience.

Mid-level backend engineer role within Reddit's Ads organization working on microservices, APIs, distributed and real-time data systems for advertiser-facing products. Technologies listed include Go, Python, Scala, Spark, Thrift, Baseplate, Kafka, Postgres, BigQuery, Redis, Druid, Kubernetes, Argo, and Docker. Responsibilities include feature ownership, collaborating with product/platform/data teams, improving operational stability, and building extensible components.

Work on Reddit's first-party GraphQL API layer: design, build, and operate a Go-based federated GraphQL platform at massive scale. Responsibilities include improving functionality, scalability, observability, and developer tooling; tuning for latency and resilience; mentoring teammates; and sharing on-call duties. Requires 5+ years building large-scale distributed backend systems; Go preferred; experience with Kubernetes, CI/CD, and AWS/GCP.

Generalist senior backend engineer on Reddit's Ads organization. Work includes building microservices and APIs for advertiser products, distributed and real-time data-intensive systems, interactive ad backends, and infrastructure using Go, Python, Scala, Spark, Kafka, Postgres, BigQuery, Redis, Druid, Kubernetes, Argo, and Docker. Requires 5+ years of software development experience.

Design, implement, and operate end-to-end production ML systems including large-scale data pipelines, model training, serving, monitoring, and automated retraining. Work cross-functionally to improve ranking, recommendation, search relevance, advertising systems, and LLM-powered products. Requires 3+ years building and deploying ML systems, strong software engineering skills (Python/Java/Go), experience with ML frameworks (PyTorch/TensorFlow), and familiarity with large-scale data and real-time systems.

Work involves designing, building, and deploying production-grade ML models and infrastructure (recommendation, search/ranking, ads, content/user understanding, LLM applications). Requires 3+ years building and operating ML systems, strong programming (Python/Java/Go), experience with ML frameworks (PyTorch/TensorFlow), ML algorithms (XGBoost, Transformers, GNNs), and large-scale data/pipeline tooling. Base salary range listed: $216,700–$303,400 USD per year.

Responsible for architecting and evolving Reddit's embeddings platform (graph neural networks, transformer/sequence models, foundational models), driving high-impact projects, and building a high-performing team. Requires experience managing people (4+ years), and substantial production software and large-scale ML systems experience (8+ years).

Reddit is hiring a Senior Data Scientist for its Data Science team to drive product strategy for consumer (and other) areas through experimentation, causal analyses, metric design, and deep data analyses. The role requires advanced quantitative degree (MS/PhD) with 5+ years (MS) or 4+ years (PhD) industry experience, strong SQL and Python/R skills, and experience with A/B testing and causal inference. Location is US remote-friendly or at Reddit offices (SF, LA, CHI, NY).

Join Reddit's Ads Data Science team as a Senior Data Scientist (US-remote). You'll develop and apply machine learning and statistical methods to improve advertiser experience and ad platform performance, analyze large-scale datasets (Spark/Hadoop/Hive/BigQuery), design experiments and causal analyses, build ML models (scikit-learn, TensorFlow, PyTorch), communicate findings to stakeholders, and mentor junior data scientists. Requires an advanced quantitative degree (MS/PhD) with 4+ years (PhD) or 5+ years (MS) of industry experience. Base salary range: $190,800–$267,100 USD/year.

Reddit is hiring a Senior Client Account Manager (8-month fixed-term contract) to work with Client Partners and agency/client advertisers in Canada. Responsibilities include managing and launching campaigns, providing optimization recommendations, liaising with Ad Ops, analyzing campaign performance, driving revenue growth, and mentoring team members. Requires 7 years in advertising sales/account management and strong knowledge of digital measurement and marketing.

Remote (United States) Senior Analytics Engineer role on Reddit's Data Science team focused on Sales and Marketing. Responsibilities include stewarding Sales & Marketing data, architecting data collection, developing ETL/ELT pipelines and workflows, building dashboards and internal tooling, driving automation and self-service analytics, and mentoring colleagues. Requires an advanced quantitative degree and multi-year industry experience with large-scale ETL systems and tools such as Python, SQL, Spark, Airflow, and visualization platforms (Looker, Tableau, etc.).