[Remote] Member of Engineering (Pre-training / Data Acquisition)

Note: The job is a remote job and is open to candidates in USA. Poolside is a company focused on building a world where AI drives economically valuable work and scientific progress. The role involves working with the pre-training data team to acquire high-quality pre-training data for frontier models, ensuring alignment with training needs and building systems for efficient data acquisition.ResponsibilitiesDesign, build, and operate a large-scale web crawler responsible for acquiring all openly accessible data on the internetDevelop specialized deep crawlers targeting high-value sources to improve recall and coverageIn collaboration with data researchers, own a long-term road map for data acquisitionBuild observability, monitoring, and debugging tooling to ensure reliability and transparency across crawl infrastructureCollaborate with pre-training, post-training, and evaluations teams to align data acquisition priorities with model training needsBuild high-throughput ingestion pipelines for rapidly onboarding partner data and evaluating it for qualitySkillsStrong distributed systems background with proven experience building and operating large-scale infrastructure — data pipelines, web crawlers, or similarProficiency in Python, and comfortable optimizing performance and debugging complex systems under production conditionsHands-on experience with web crawling or large-scale data extraction: understanding of HTTP protocols, distributed job queues, and data parsing at scaleFamiliarity with cloud platforms (AWS) and container orchestration (Kubernetes, Docker) for deploying and managing high-throughput workloadsAwareness of the non-technical dimensions of internet-scale crawling: data privacy, robots.txt adherence, and responsible crawl practicesPrior experience pre-training LLMsExperience in building trillion-scale SOTA pre-training datasetsExperience translating research to production at scaleBenefitsFully remote work & flexible hours37 days/year of vacation & holidays16 weeks of flexible, full-pay parental leaveHealth insurance allowance for you & dependentsCompany-provided equipmentWell-being, always-be-learning & home office allowancesFrequent team get togethersDiverse & inclusive people-first cultureCompany OverviewPoolside is an artificial intelligence platform that offers foundation concepts and infrastructure to write software codes. It was founded in 2023, and is headquartered in San Francisco, California, USA, with a workforce of 51-200 employees. Its website is http://www.poolside.ai.Company H1B SponsorshipPoolside has a track record of offering H1B sponsorships, with 1 in 2025. Please note that this does not guarantee sponsorship for this specific role.