{"id":1658074,"url":"https://alion.io/job/medra-research-engineer-post-training","title":"Research Engineer, Post-training","company":{"id":678855,"name":"Medra","domain":"medra.ai","url":"https://alion.io/company/medra","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"A","score":88,"open_postings":12,"ghost_share":0,"stale_share":0.5,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-06T05:45:30Z"}},"role":"AI/ML","role_family":"AI/ML","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["San Francisco, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":169000,"max_usd":373000,"period":"year","method":"role_country_seniority_unknown","sample_n":3434},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"JAX","optional":false},{"name":"Machine Learning","optional":false},{"name":"Physical AI","optional":false},{"name":"Post-training","optional":false},{"name":"Python","optional":false},{"name":"PyTorch","optional":false},{"name":"Reinforcement Learning","optional":false},{"name":"Reinforcement Learning","optional":false}],"status":"live","first_seen_at":"2026-10-01T22:40:36Z","employer_posted_date":"2026-10-01","last_verified_at":"2026-10-07T00:45:26Z","board_verified":true,"closed_at":null,"days_open":5,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":4},"description":"What We're Building:\nIf you want to shape the future of science, come build with us. Medra is building Physical AI Scientists: robotic systems that work hand-in-hand with leading biopharma partners to enable scientific breakthroughs faster than ever before.\nPhysical AI that can operate scientific instruments with human-level dexterity.\nScientific AI that can analyze results, reason about next steps, and close the loop autonomously.\nWe shipped our first production system over a year ago, recently raised a $52M Series A, and are opening one of the largest autonomous labs in the US. We're a small, ambitious team and you'd be joining early.\nThe Team:\nWe’re a team of passionate, mission-driven engineers from companies like Tesla, Amazon, SpaceX, and Neuralink. We’re collaborative and love moving fast, both with our product and on team trips skiing or go-karting!\n\nAs a team, we love nerding out about engineering and robotics - plus other topics like race cars or cooking. We like learning new things and then sharing our new knowledge with each other.\n\nOur team is opinionated and straightforward. We don’t mind intense discussions about design tradeoffs. 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