Owner of high-performance retrieval and serving infrastructure for Reddit Home Feed, responsible for designing ultra-low-latency candidate retrieval, contributor-friendly serving pipelines, shadow-testing infrastructure, and cross-stack integration. Requires 10+ years backend experience building scalable, low-latency distributed systems; salary range $266,000–$372,400 USD per year.

Reddit is hiring a Senior Data Scientist for the Consumer team. Role is remote based in Ontario, Canada. The posting includes company benefits, equal opportunity and candidate privacy/interview-recording information. No responsibilities, required skills, experience, salary, or visa/relocation details are provided in the vacancy text.

Senior Data Science Manager for Marketing (remote, Ontario) to build and lead a team focused on data foundations, causal measurement, and decision-making insights. Responsibilities include developing incremental/predictive LTV models, experimental and causal measurement frameworks, overseeing ETLs and dashboards, and driving adoption of data-driven recommendations. Requires ~5+ years of leadership experience, expertise in causal inference, experimentation, metric governance, and hands-on skills in SQL and Python/R.

Lead Reddit's Safety ML organization to define strategy, develop and productionize transformer-based and LLM models for content and abuse detection, and partner cross-functionally with Safety, Product, and Engineering. Requires 10+ years in ML/AI or applied research, 5+ years leading large multidisciplinary ML teams, experience shipping ML at scale, and depth in NLP, detection systems, and responsible AI practices. Role is remote-friendly within the United States with listed US office locations.

Lead design and implementation of a modular iOS video player and scalable media capabilities in Swift. Partner with backend media infrastructure and CDN teams, work cross-functionally to deliver video features, and mentor engineers. Requires 8+ years building user-facing native iOS applications and deep experience with AVFoundation, Core Media/Core Video, HLS/MPEG-DASH, and reactive frameworks (RxSwift/Combine).

Lead Reddit's Ads Product legal function globally as a player-coach: manage a team of ads lawyers, advise Ads Product & Engineering and C-suite on ads product initiatives (e.g., measurement, targeting, Pixels/CAPI, data flows, DSA/VLOP compliance), develop legal strategy and risk frameworks, and build scalable processes. Requires 12+ years practicing law (12-15+ noted), 7+ years in-house ads product counsel experience, deep global privacy knowledge (GDPR, ePrivacy, U.S. state privacy laws), JD and active U.S. bar membership (or ability to register). Base salary range listed: $299,200–$418,800 USD/year.

The role is based in Singapore and focuses on collaborating with Client Partners to execute and optimize advertising campaigns, deepen relationships with agencies and large clients, identify revenue opportunities, manage account operations with Ad Ops, provide measurement and media planning consultation, and mentor team members. Requires 8+ years in advertising sales/account management.

Lead reliability engineering initiatives for critical user-facing systems (web, mobile, APIs, feeds, media, real-time). Responsibilities include architecting for scale, reducing operational risk, driving automation, leading incident response and postmortems, and influencing reliability standards. Role requires 8+ years in SRE/infrastructure operating large-scale distributed systems and strong experience with observability, SLOs, programming (Go/Python), and technologies like Kubernetes, Prometheus, Grafana, OpenTelemetry, CDN/edge and other distributed infra.

Remote (US) Senior Software Engineer role focused on designing and delivering Go services, Kubernetes controllers/operators, and SDKs to automate lifecycle, scheduling, and capacity tracking for Reddit's multi-region compute fleet. Requires 4+ years in infrastructure/distributed systems, expertise in Go, Kubernetes, and Linux internals; includes periodic on-call rotation.

Lead product strategy and execution for Reddit Ads' Advertiser Optimization portfolio (targeting, planning, forecasting, bidding, budget management, pacing, and ML-driven recommendations). Hire, mentor, and manage PMs; collaborate with engineering, data science, design, sales, and marketing; own KPIs and product roadmap. Requires 8+ years of product management experience in ads or advertiser-facing products. Remote (United States); base salary range $232,500–$325,500 USD per year.

Lead technical strategy for growth: design and accelerate backend systems that surface communities across feeds/search/onboarding, build instrumentation and A/B testing foundations, collaborate with Relevance/Feeds/Search and ML teams, and drive reliability, scalability, and maintainability. Role requires at least 7 years of experience and hands-on experience with ML-heavy products (ranking, recommendations, personalization).

Lead the Marketing Science team’s measurement strategy and technical execution. Set a 2–3 year roadmap and North Star metrics, build Media Mix Models and Multi-Touch Attribution systems, design always-on incrementality tests and geo-holdouts, mentor junior scientists, and influence senior leadership on budget and measurement decisions.

Role responsible for building and improving security-focused ML models (guardrails, classifiers, anomaly detection) across Reddit's GenAI workflows. Owns full ML lifecycle including data ETL, feature engineering, training, evaluation, deployment, monitoring, and retraining. Requires 5+ years of production ML experience and hands-on experience with frameworks such as PyTorch or TensorFlow; remote (United States) position.

Senior individual contributor responsible for architecture and engineering of ads identity modeling and related measurement ML solutions. Requires designing and deploying large-scale ML systems (model training, inference, feature engineering), collaborating across product, data science, privacy and legal, and mentoring engineers. Minimum 7+ years software engineering experience with 3+ years on ML-driven systems; salary range $230,000–$322,000 USD/year.

Lead architecture and platform work for Reddit’s iOS app to scale to 100M+ DAUs. Identify and redesign gaps in iOS architecture, define and measure performance goals (ANR, app launch time, slow/dropped frames), improve telemetry/observability, and mentor iOS engineers across the company. Requires 10+ years software development experience and 5+ years designing/developing iOS applications.

Reddit is hiring a Staff Product Security Engineer to lead design and delivery of secure frameworks, paved paths, and workflow-native controls that prevent recurring vulnerabilities, with emphasis on AI-assisted development. Responsibilities include embedding security into developer workflows (CI/CD, code review, releases), driving product security reviews, and eliminating systemic security debt. Requires 8+ years in software/product/application security (including 2+ years at staff scope), proficiency in Go/Python/JS/TS, experience building developer-facing platforms and secure libraries. Base salary range: $217,000–$303,900 USD/year.

Lead and grow a Search Storage engineering team at Reddit, responsible for selecting, scoping, and delivering storage systems (e.g., Milvus, Vespa, Solr) and operating them on orchestration platforms like Kubernetes. Role requires backend infrastructure experience (7+ years), people management (3+ years), experience in high-scale environments, and familiarity with storage for full-text and vector search. Base salary range listed: $217,000–$303,000 USD/year.

Reddit is hiring a Staff Machine Learning Engineer for Ads Content Understanding (ACU). The role combines ~50% technical leadership/mentorship and ~50% hands-on work building and operating content-understanding signals (knowledge graph, taxonomies, opinion mining, product/entity extraction) for Ads. Responsibilities include designing ML systems and pipelines, evaluation/quality monitoring (LM-judge practices), LLM usage and distillation, setting SLOs/alerts/dashboards, and driving operational excellence at scale. Requires 7+ years of relevant experience delivering production ML systems and strong experience with NLP/LMs, PyTorch/TensorFlow, Python, and production-grade engineering.

Reddit seeks a Staff Android Engineer for the Brand Ad Formats team to drive technical design and execution of Video Ads and reddit-unique ad formats on Android. Requires 8+ years software engineering experience, 3+ years Android/Kotlin expertise, experience delivering production Android projects, familiarity with Ad Tech and video-rich mobile experiences, and fluency with experimentation and data tools (e.g., BigQuery, Firebase).

Lead technical design and implementation of high-performance, scalable Android ad formats (with emphasis on Video Ads). Responsibilities include roadmap partnership with Product and Design, full lifecycle development from prototyping to deployment, mentoring senior engineers, and establishing Android best practices. Requires 8+ years software engineering experience and deep expertise in Kotlin/modern Android patterns.