{"schema_version":"onlylabs.public_signal.v1","title":"Anthropic Job: Research Engineer, RL Scaling Science","description":"Anthropic job signal with public source context, captured evidence pages, related signals, and data-business radar classification.","url":"https://onlylabs.fyi/signals/456e74d2-d1c0-49ea-965c-e05df94b4453","json_url":"https://onlylabs.fyi/signals/456e74d2-d1c0-49ea-965c-e05df94b4453/signal.json","generated_at":"2026-06-26T23:22:10.068Z","evidence_latest_fetched_at":"2026-06-23T07:02:42.491124+00:00","signal_first_seen_at":"2026-06-23T07:00:26.369583+00:00","org":{"slug":"anthropic","name":"Anthropic","category":"frontier-lab","category_label":"Frontier lab","dossier_url":"https://onlylabs.fyi/labs/anthropic","dossier_json_url":"https://onlylabs.fyi/labs/anthropic/dossier.json"},"related_urls":{"signal":"https://onlylabs.fyi/signals/456e74d2-d1c0-49ea-965c-e05df94b4453","signal_json":"https://onlylabs.fyi/signals/456e74d2-d1c0-49ea-965c-e05df94b4453/signal.json","source":"https://job-boards.greenhouse.io/anthropic/jobs/5264619008","lab_dossier":"https://onlylabs.fyi/labs/anthropic","lab_dossier_json":"https://onlylabs.fyi/labs/anthropic/dossier.json","analysis":"https://onlylabs.fyi/analysis/anthropic","analysis_json":"https://onlylabs.fyi/analysis/anthropic/analysis.json","analysis_evidence_json":"https://onlylabs.fyi/analysis/anthropic/evidence.json","category":"https://onlylabs.fyi/frontier","category_json":"https://onlylabs.fyi/frontier.json","category_feed":"https://onlylabs.fyi/frontier/feed.xml","category_signals_json":"https://onlylabs.fyi/signals.json","topic":"https://onlylabs.fyi/topics/hiring","topic_signals_json":"https://onlylabs.fyi/topics/hiring/signals.json","topic_feed":"https://onlylabs.fyi/topics/hiring/feed.xml","data_business":{"radar":"https://onlylabs.fyi/data-radar","radar_json":"https://onlylabs.fyi/data-radar.json","opportunities":"https://onlylabs.fyi/opportunities","opportunities_json":"https://onlylabs.fyi/opportunities.json","lanes":[{"key":"infrastructure","label":"Infrastructure","url":"https://onlylabs.fyi/data-radar/infrastructure","json_url":"https://onlylabs.fyi/data-radar/infrastructure/signals.json"}]}},"answer_pack":{"answer":"Anthropic opened Research Engineer, RL Scaling Science (London, UK). This hiring signal is demand evidence for teams, locations, and technical bets being staffed. High-signal details: location London, UK · Routine job opening at Anthropic.. onlylabs links this event to 1 captured evidence page and 6 related job signals. It also maps to Infrastructure in the data-business radar.","signal_desk":"hiring","source_context":{"source_url":"https://job-boards.greenhouse.io/anthropic/jobs/5264619008","source_host":"job-boards.greenhouse.io","occurred_at":"2026-06-22T11:06:02+00:00","first_seen_at":"2026-06-23T07:00:26.369583+00:00","date_source":"greenhouse.updated_at","context":"London, UK"},"context_markers":[{"label":"Lab","value":"Anthropic","source":"signal"},{"label":"Signal desk","value":"hiring","source":"signal"},{"label":"Source host","value":"job-boards.greenhouse.io","source":"source"},{"label":"Location","value":"London, UK","source":"signal"},{"label":"ATS","value":"greenhouse","source":"source"},{"label":"Notability","value":"Routine job opening at Anthropic.","source":"signal"},{"label":"Radar lane","value":"Infrastructure","source":"radar"},{"label":"Matched term","value":"scaling","source":"radar"},{"label":"Watch term","value":"RL environments","source":"evidence"},{"label":"Watch term","value":"Eval methodology","source":"evidence"},{"label":"Watch term","value":"Infrastructure","source":"evidence"},{"label":"Watch term","value":"Safety and alignment","source":"evidence"}],"evidence_coverage":{"target_pages":1,"captured_pages":1,"readable_pages":1,"capture_methods":["plain"],"missing_page_urls":[],"failed_page_urls":[],"blocked_page_urls":[],"page_urls":["https://job-boards.greenhouse.io/anthropic/jobs/5264619008"],"related_signals":6,"has_source_url":true,"latest_page_fetched_at":"2026-06-23T07:02:42.491124+00:00"},"data_business":{"matches":true,"lanes":[{"key":"infrastructure","label":"Infrastructure","url":"https://onlylabs.fyi/data-radar/infrastructure","json_url":"https://onlylabs.fyi/data-radar/infrastructure/signals.json"}],"matched_terms":["scaling"],"score":15,"reason":"Anthropic has a job signal matching infrastructure."},"agent_handoff":{"signal_json":"https://onlylabs.fyi/signals/456e74d2-d1c0-49ea-965c-e05df94b4453/signal.json","dossier_json":"https://onlylabs.fyi/labs/anthropic/dossier.json","analysis_json":"https://onlylabs.fyi/analysis/anthropic/analysis.json","analysis_evidence_json":"https://onlylabs.fyi/analysis/anthropic/evidence.json","topic_signals_json":"https://onlylabs.fyi/topics/hiring/signals.json","topic_feed":"https://onlylabs.fyi/topics/hiring/feed.xml","category_signals_json":"https://onlylabs.fyi/signals.json","data_radar_json":"https://onlylabs.fyi/data-radar.json","opportunities_json":"https://onlylabs.fyi/opportunities.json"},"analysis_playbook":{"objective":"Turn open roles into leading indicators for teams, locations, infrastructure needs, eval work, data demand, and commercialization buildout.","evidence_focus":["role title","team or function","location","job description","data, eval, infra, safety, product, and GTM terms"],"extraction_questions":["Which teams are hiring repeatedly?","Which locations or hubs are becoming more important?","Which roles imply data, evaluation, infrastructure, or platform spend?","Which labs have hiring signals without a fresh standing analysis?"],"signal_questions":["What demand signal does this role create for teams, locations, infrastructure, evals, or data workflows?","Which teams are hiring repeatedly?","Which locations or hubs are becoming more important?","Which data-business lane explains this signal: Infrastructure?","Do the 6 related job signals show a repeated pattern?"],"output_fields":["org","team","location","role_theme","data_business_lane","evidence_url"],"data_business_relevance":"Hiring is the earliest demand signal for where frontier labs may need data products, eval tooling, infra vendors, and workflow support.","required_sources":[{"label":"signal_json","url":"https://onlylabs.fyi/signals/456e74d2-d1c0-49ea-965c-e05df94b4453/signal.json","required":true},{"label":"source","url":"https://job-boards.greenhouse.io/anthropic/jobs/5264619008","required":true},{"label":"dossier_json","url":"https://onlylabs.fyi/labs/anthropic/dossier.json","required":true},{"label":"analysis_evidence_json","url":"https://onlylabs.fyi/analysis/anthropic/evidence.json","required":true},{"label":"topic_signals_json","url":"https://onlylabs.fyi/topics/hiring/signals.json","required":false},{"label":"data_radar_json","url":"https://onlylabs.fyi/data-radar.json","required":true}],"expected_output":["one-paragraph source-grounded interpretation","data-business implication","confidence and missing evidence","recommended next source to inspect"],"prompt_seed":"Using only the linked onlylabs JSON, captured source context, and cited evidence, analyze Anthropic's job signal \"Research Engineer, RL Scaling Science\" for frontier lab strategy and data-business implications."},"semantic_triples":[{"subject":"Anthropic","predicate":"opened","object":"role Research Engineer, RL Scaling Science","text":"Anthropic opened role Research Engineer, RL Scaling Science."},{"subject":"Research Engineer, RL Scaling Science","predicate":"is classified as","object":"job signal","text":"Research Engineer, RL Scaling Science is classified as job signal."},{"subject":"Research Engineer, RL Scaling Science","predicate":"belongs to","object":"hiring desk","text":"Research Engineer, RL Scaling Science belongs to hiring desk."},{"subject":"Research Engineer, RL Scaling Science","predicate":"has context","object":"London, UK","text":"Research Engineer, RL Scaling Science has context London, UK."},{"subject":"Research Engineer, RL Scaling Science","predicate":"has evidence coverage","object":"1 captured evidence page","text":"Research Engineer, RL Scaling Science has evidence coverage 1 captured evidence page."},{"subject":"Research Engineer, RL Scaling Science","predicate":"matches data-business lanes","object":"Infrastructure","text":"Research Engineer, RL Scaling Science matches data-business lanes Infrastructure."},{"subject":"Research Engineer, RL Scaling Science","predicate":"has captured page count","object":"1","text":"Research Engineer, RL Scaling Science has captured page count 1."},{"subject":"Research Engineer, RL Scaling Science","predicate":"has readable page count","object":"1","text":"Research Engineer, RL Scaling Science has readable page count 1."},{"subject":"Research Engineer, RL Scaling Science","predicate":"has related signal count","object":"6","text":"Research Engineer, RL Scaling Science has related signal count 6."},{"subject":"Research Engineer, RL Scaling Science","predicate":"has analysis playbook objective","object":"Turn open roles into leading indicators for teams, locations, infrastructure needs, eval work, data demand, and commercialization buildout.","text":"Research Engineer, RL Scaling Science has analysis playbook objective Turn open roles into leading indicators for teams, locations, infrastructure needs, eval work, data demand, and commercialization buildout.."},{"subject":"Research Engineer, RL Scaling Science","predicate":"has source host","object":"job-boards.greenhouse.io","text":"Research Engineer, RL Scaling Science has source host job-boards.greenhouse.io."},{"subject":"Research Engineer, RL Scaling Science","predicate":"has lab","object":"Anthropic","text":"Research Engineer, RL Scaling Science has lab Anthropic."},{"subject":"Research Engineer, RL Scaling Science","predicate":"has signal desk","object":"hiring","text":"Research Engineer, RL Scaling Science has signal desk hiring."},{"subject":"Research Engineer, RL Scaling Science","predicate":"has source host","object":"job-boards.greenhouse.io","text":"Research Engineer, RL Scaling Science has source host job-boards.greenhouse.io."},{"subject":"Research Engineer, RL Scaling Science","predicate":"has location","object":"London, UK","text":"Research Engineer, RL Scaling Science has location London, UK."},{"subject":"Research Engineer, RL Scaling Science","predicate":"has ats","object":"greenhouse","text":"Research Engineer, RL Scaling Science has ats greenhouse."},{"subject":"Research Engineer, RL Scaling Science","predicate":"has notability","object":"Routine job opening at Anthropic.","text":"Research Engineer, RL Scaling Science has notability Routine job opening at Anthropic.."},{"subject":"Research Engineer, RL Scaling Science","predicate":"has radar lane","object":"Infrastructure","text":"Research Engineer, RL Scaling Science has radar lane Infrastructure."},{"subject":"Research Engineer, RL Scaling Science","predicate":"has matched term","object":"scaling","text":"Research Engineer, RL Scaling Science has matched term scaling."}]},"intelligence":{"signal_desk":"hiring","answer":"Anthropic opened Research Engineer, RL Scaling Science (London, UK). This hiring signal is demand evidence for teams, locations, and technical bets being staffed. High-signal details: location London, UK · Routine job opening at Anthropic.. onlylabs links this event to 1 captured evidence page and 6 related job signals. It also maps to Infrastructure in the data-business radar.","semantic_triples":[{"subject":"Anthropic","predicate":"opened","object":"role Research Engineer, RL Scaling Science","text":"Anthropic opened role Research Engineer, RL Scaling Science."},{"subject":"Research Engineer, RL Scaling Science","predicate":"is classified as","object":"job signal","text":"Research Engineer, RL Scaling Science is classified as job signal."},{"subject":"Research Engineer, RL Scaling Science","predicate":"belongs to","object":"hiring desk","text":"Research Engineer, RL Scaling Science belongs to hiring desk."},{"subject":"Research Engineer, RL Scaling Science","predicate":"has context","object":"London, UK","text":"Research Engineer, RL Scaling Science has context London, UK."},{"subject":"Research Engineer, RL Scaling Science","predicate":"has evidence coverage","object":"1 captured evidence page","text":"Research Engineer, RL Scaling Science has evidence coverage 1 captured evidence page."},{"subject":"Research Engineer, RL Scaling Science","predicate":"matches data-business lanes","object":"Infrastructure","text":"Research Engineer, RL Scaling Science matches data-business lanes Infrastructure."}]},"signal":{"id":"456e74d2-d1c0-49ea-965c-e05df94b4453","url":"https://onlylabs.fyi/signals/456e74d2-d1c0-49ea-965c-e05df94b4453","json_url":"https://onlylabs.fyi/signals/456e74d2-d1c0-49ea-965c-e05df94b4453/signal.json","source_url":"https://job-boards.greenhouse.io/anthropic/jobs/5264619008","title":"Research Engineer, RL Scaling Science","summary":"Anthropic opened a hiring signal. onlylabs watches roles as demand indicators for teams, locations, and technical bets.","context":"London, UK","kind":{"key":"job_opened","label":"Job"},"org":{"slug":"anthropic","name":"Anthropic","category":"frontier-lab"},"occurred_at":"2026-06-22T11:06:02+00:00","first_seen_at":"2026-06-23T07:00:26.369583+00:00","date_source":"greenhouse.updated_at","evidence_coverage":{"target_pages":1,"captured_pages":1,"readable_pages":1,"capture_methods":["plain"],"missing_page_urls":[],"failed_page_urls":[],"blocked_page_urls":[],"page_urls":["https://job-boards.greenhouse.io/anthropic/jobs/5264619008"]},"facets":{"location":"London, UK","ats":"greenhouse"},"traction":{"github_stars":null,"hn_points":null,"hn_comments":null,"hn_story_id":null,"hf_downloads":null,"hf_likes":null},"data_radar":{"lanes":[{"key":"infrastructure","label":"Infrastructure","url":"https://onlylabs.fyi/data-radar/infrastructure"}],"score":15,"matched_terms":["scaling"],"reason":"Anthropic has a job signal matching infrastructure."}},"primary_evidence_page":{"is_primary":true,"source_match":true,"url":"https://job-boards.greenhouse.io/anthropic/jobs/5264619008","final_url":"https://job-boards.greenhouse.io/anthropic/jobs/5264619008","title":"Research Engineer, RL Scaling Science","http_status":200,"content_type":"text/html; charset=utf-8","capture_method":"plain","fetched_at":"2026-06-23T07:02:42.491124+00:00","bytes":71654,"raw_path":"bfef35a036afb989f9a94d16b455abd343705b4d64cc5f61b93f9b7bb70526b9.html","content_hash":"52c9e622ecb5541ad03b3dfc47066d69c732edf1a10c58f187cd99c4b8cf4997","excerpt_chars":1200,"truncated":true,"excerpt":"Job Application for Research Engineer, RL Scaling Science at Anthropic Back to jobs New Research Engineer, RL Scaling Science London, UK About Anthropic Anthropic’s mission is to create reliable, interpretable, and steerable AI systems. We want AI to be safe and beneficial for our users and for society as a whole. Our team is a quickly growing group of committed researchers, engineers, policy experts, and business leaders working together to build beneficial AI systems. About the role Anthropic's RL Scaling Science team studies how reinforcement learning behaves as we scale it (across model size, compute, and task horizon) and turns that understanding into the training recipes behind our frontier models. As a Research Engineer on this team, you'll design and run large-scale experiments to understand and resolve bottlenecks, build the benchmarks that make long-horizon progress measurable, and ship validated findings directly into production training. This role lives at the boundary between research and engineering. The problems are open, the experiments run at frontier scale, and the path from a robust result to production is short. Key responsibilities Design, run, and interpret..."},"evidence_pages":[],"related_signals":[{"id":"2016618a-149e-4e51-ad15-7feb9a282505","url":"https://onlylabs.fyi/signals/2016618a-149e-4e51-ad15-7feb9a282505","source_url":"https://job-boards.greenhouse.io/anthropic/jobs/5281348008","title":"Web Product Manager","context":"San Francisco, CA | New York City, NY","kind":{"key":"job_opened","label":"Job"},"org":{"slug":"anthropic","name":"Anthropic","category":"frontier-lab"},"occurred_at":"2026-06-26T03:15:29+00:00","first_seen_at":"2026-06-26T07:00:26.37406+00:00","date_source":"greenhouse.updated_at"},{"id":"9a3de0fe-f619-4db2-8593-34de465688c5","url":"https://onlylabs.fyi/signals/9a3de0fe-f619-4db2-8593-34de465688c5","source_url":"https://job-boards.greenhouse.io/anthropic/jobs/5278987008","title":"G&A Compensation Partner ","context":"San Francisco, CA | New York City, NY","kind":{"key":"job_opened","label":"Job"},"org":{"slug":"anthropic","name":"Anthropic","category":"frontier-lab"},"occurred_at":"2026-06-25T23:25:19+00:00","first_seen_at":"2026-06-26T07:00:26.37406+00:00","date_source":"greenhouse.updated_at"},{"id":"0e52488d-ff1b-47ff-bb7d-7bbfd908c3db","url":"https://onlylabs.fyi/signals/0e52488d-ff1b-47ff-bb7d-7bbfd908c3db","source_url":"https://job-boards.greenhouse.io/anthropic/jobs/5277850008","title":"Immigration Specialist, M&A","context":"San Francisco, CA","kind":{"key":"job_opened","label":"Job"},"org":{"slug":"anthropic","name":"Anthropic","category":"frontier-lab"},"occurred_at":"2026-06-25T21:56:28+00:00","first_seen_at":"2026-06-26T07:00:26.37406+00:00","date_source":"greenhouse.updated_at"},{"id":"1a18a199-4e90-4d36-9bc3-83f8f1415b55","url":"https://onlylabs.fyi/signals/1a18a199-4e90-4d36-9bc3-83f8f1415b55","source_url":"https://job-boards.greenhouse.io/anthropic/jobs/5271426008","title":"Staff Software Engineer, Developer Productivity (Dev Environments) - Claude Code","context":"San Francisco, CA","kind":{"key":"job_opened","label":"Job"},"org":{"slug":"anthropic","name":"Anthropic","category":"frontier-lab"},"occurred_at":"2026-06-25T20:59:40+00:00","first_seen_at":"2026-06-19T07:01:15.405937+00:00","date_source":"greenhouse.updated_at"},{"id":"e5bb2aac-f7d2-4ee7-ad96-ba72843f518a","url":"https://onlylabs.fyi/signals/e5bb2aac-f7d2-4ee7-ad96-ba72843f518a","source_url":"https://job-boards.greenhouse.io/anthropic/jobs/5271428008","title":"Staff Software Engineer, Developer Productivity (CI/CD) - Claude Code","context":"San Francisco, CA","kind":{"key":"job_opened","label":"Job"},"org":{"slug":"anthropic","name":"Anthropic","category":"frontier-lab"},"occurred_at":"2026-06-25T20:59:11+00:00","first_seen_at":"2026-06-19T07:01:15.405937+00:00","date_source":"greenhouse.updated_at"},{"id":"9047c469-b5ba-4575-870b-93d10d1fc84d","url":"https://onlylabs.fyi/signals/9047c469-b5ba-4575-870b-93d10d1fc84d","source_url":"https://job-boards.greenhouse.io/anthropic/jobs/5258579008","title":"Art Director, Claude","context":"San Francisco, CA | New York City, NY","kind":{"key":"job_opened","label":"Job"},"org":{"slug":"anthropic","name":"Anthropic","category":"frontier-lab"},"occurred_at":"2026-06-25T20:50:08+00:00","first_seen_at":"2026-06-26T07:00:26.37406+00:00","date_source":"greenhouse.updated_at"}]}