{"absolute_url":"https://job-boards.greenhouse.io/xai/jobs/4965893007","data_compliance":[{"type":"gdpr","requires_consent":false,"requires_processing_consent":false,"requires_retention_consent":false,"retention_period":null,"demographic_data_consent_applies":false}],"internal_job_id":4549187007,"location":{"name":"Palo Alto, California"},"metadata":[{"id":22659078007,"name":"Job Description via Google Doc URL [please share with Olivia]","value":"https://docs.google.com/document/d/1xijpVGqvEogmK7i4-blcpG9nGizd_Z3XnOx1R1lk9UE/edit?tab=t.0","value_type":"short_text"},{"id":16340689007,"name":"Featured Role","value":null,"value_type":"yes_no"}],"id":4965893007,"updated_at":"2026-08-27T18:09:48-04:00","requisition_id":"585","title":"Member of Technical Staff - Mid-training","company_name":"SpaceXAI","first_published":"2025-10-31T19:21:47-04:00","language":"en","application_deadline":null,"content":"\u0026lt;div class=\u0026quot;content-intro\u0026quot;\u0026gt;\u0026lt;p\u0026gt;\u0026lt;span style=\u0026quot;font-family: arial, helvetica, sans-serif;\u0026quot;\u0026gt;SpaceXAI’s mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge.\u0026amp;nbsp;\u0026lt;/span\u0026gt;\u0026lt;span style=\u0026quot;font-family: arial, helvetica, sans-serif;\u0026quot;\u0026gt;Our team is small, highly motivated, and focused on engineering excellence. This organization is for individuals who appreciate challenging themselves and thrive on curiosity. \u0026lt;/span\u0026gt;\u0026lt;span style=\u0026quot;font-family: arial, helvetica, sans-serif;\u0026quot;\u0026gt;We operate with a flat organizational structure. All employees are expected to be hands-on and to contribute directly to the company’s mission. Leadership is given to those who show initiative and consistently deliver excellence. Work ethic and strong prioritization skills are important. \u0026lt;/span\u0026gt;\u0026lt;span style=\u0026quot;font-family: arial, helvetica, sans-serif;\u0026quot;\u0026gt;All employees are expected to have strong communication skills. They should be able to concisely and accurately share knowledge with their teammates.\u0026lt;/span\u0026gt;\u0026lt;/p\u0026gt;\u0026lt;/div\u0026gt;\u0026lt;h3\u0026gt;\u0026lt;strong\u0026gt;RESPONSIBILITIES:\u0026lt;/strong\u0026gt;\u0026lt;/h3\u0026gt;\n\u0026lt;ul\u0026gt;\n\u0026lt;li\u0026gt;Scale synthetic coding data to trillions of tokens with large-scale docker verification.\u0026lt;/li\u0026gt;\n\u0026lt;li\u0026gt;Distill the intelligence of flagship models into flash models through synthetic data generation.\u0026lt;/li\u0026gt;\n\u0026lt;li\u0026gt;Optimize mid-training data mixtures to boost the ceiling for RL.\u0026lt;/li\u0026gt;\n\u0026lt;li\u0026gt;Engineer long-context data recipes.\u0026lt;/li\u0026gt;\n\u0026lt;li\u0026gt;Develop robust and diverse evaluation for mid-training checkpoints.\u0026lt;/li\u0026gt;\n\u0026lt;/ul\u0026gt;\n\u0026lt;h3\u0026gt;\u0026lt;strong\u0026gt;BASIC QUALIFICATIONS:\u0026lt;/strong\u0026gt;\u0026lt;/h3\u0026gt;\n\u0026lt;ul\u0026gt;\n\u0026lt;li\u0026gt;Expertise in ML and large model scaling, with familiarity across all kinds of scaling laws.\u0026lt;/li\u0026gt;\n\u0026lt;li\u0026gt;Strong ability to design ML experiments.\u0026lt;/li\u0026gt;\n\u0026lt;li\u0026gt;Familiarity with state-of-the-art techniques for curating AI training data for text, image, audio, and video modalities.\u0026lt;/li\u0026gt;\n\u0026lt;li\u0026gt;Strong engineering abilities in Spark, Ray, and other frameworks for large-scale data processing.\u0026lt;/li\u0026gt;\n\u0026lt;/ul\u0026gt;\n\u0026lt;h3\u0026gt;\u0026lt;strong\u0026gt;COMPENSATION AND BENEFITS:\u0026lt;/strong\u0026gt;\u0026lt;/h3\u0026gt;\n\u0026lt;p\u0026gt;$180,000 - $440,000 USD\u0026lt;/p\u0026gt;\n\u0026lt;p\u0026gt;Base salary is just one part of our total rewards package at SpaceXAI, which also includes equity, comprehensive medical, vision, and dental coverage, access to a 401(k) retirement plan, short \u0026amp;amp; long-term disability insurance, life insurance, and various other discounts and perks.\u0026lt;/p\u0026gt;\u0026lt;div class=\u0026quot;content-conclusion\u0026quot;\u0026gt;\u0026lt;p\u0026gt;\u0026lt;em\u0026gt;SpaceXAI is an equal opportunity employer. For details on data processing, view our \u0026lt;/em\u0026gt;\u0026lt;em\u0026gt;\u0026lt;a href=\u0026quot;https://x.ai/legal/recruitment-privacy-notice\u0026quot; target=\u0026quot;_blank\u0026quot;\u0026gt;Recruitment Privacy Notice\u0026lt;/a\u0026gt;.\u0026lt;/em\u0026gt;\u0026lt;/p\u0026gt;\u0026lt;/div\u0026gt;","departments":[{"id":4064383007,"name":"Model","child_ids":[],"parent_id":4024733007}],"offices":[{"id":4035106007,"name":"Palo Alto, CA","location":"Palo Alto, California","child_ids":[],"parent_id":4054926007}],"ai_disclaimer":null,"include_ai_disclaimer":null,"ai_opt_out_request_url":null}