{"id":3867294,"url":"https://alion.io/job/crusoe-staff-software-engineer-ai-model-lifecycle","title":"Senior Staff Software Engineer, AI Model Lifecycle","company":{"id":48024,"name":"Crusoe","domain":"crusoe.ai","url":"https://alion.io/company/crusoe-ai","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"A","score":85,"open_postings":38,"ghost_share":0,"stale_share":0.605,"repost_share":0,"time_to_fill_p50_days":57,"computed_at":"2026-11-08T05:47:12Z"}},"role":"Backend","role_family":"Backend","seniority":"staff","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","Sunnyvale, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":250000,"max":300000,"currency":"USD","period":"year","gross":null,"usd_annual":300000},"salary_estimate":null,"experience_years_min":4,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"Fine-tuning","optional":false},{"name":"Knowledge Distillation","optional":false},{"name":"LoRA","optional":false},{"name":"Machine Learning","optional":false},{"name":"Model Distillation","optional":false},{"name":"Multimodal AI","optional":false},{"name":"PEFT","optional":false},{"name":"Reinforcement Learning","optional":false},{"name":"Reward Modeling","optional":false},{"name":"SFT","optional":false},{"name":"Go","optional":true},{"name":"Python","optional":true},{"name":"PyTorch","optional":true},{"name":"Transformers","optional":true},{"name":"vLLM","optional":true}],"status":"live","first_seen_at":"2026-11-06T11:05:55Z","employer_posted_date":"2026-11-06","last_verified_at":"2026-11-08T07:14:08Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"Crusoe is on a mission to accelerate the abundance of energy and intelligence. As the only vertically integrated AI infrastructure company built from the ground up, we own and operate each layer of the stack - from electrons to tokens - to power the world's most ambitious AI workloads. When you join Crusoe, you join a team that is building the future, faster.\nWe're in the midst of the greatest industrial revolution of our time. The demand for AI compute is boundless, and power is a bottleneck. We're solving that - with an energy-first approach that makes AI infrastructure better for the world and faster for the people innovating with AI.\nWe're looking for problem-solving, opportunity-finding teammates with a sense of urgency, who believe in the scale of our ambition and thrive on a path not fully paved - people who want to grow their careers alongside a team of experts across energy, manufacturing, data center construction, and cloud services.\nIf you want to do the most meaningful work of your career, help our customers and partners advance their AI strategies, and be part of a high-performing team that believes in each other, come build with us at Crusoe.\nAbout This Role:\nThe Senior Staff Software Engineer for the AI Model Lifecycle team will play a crucial role in building a comprehensive managed platform for the entire application development lifecycle, with a specific focus on leveraging Machine Learning models, including Large Language Models (LLMs).\nWhat You’ll Be Working On:\nManage fine-tuning systems for large foundation models (SFT, PEFT, LoRA, adapters), including multi-node orchestration, checkpointing, failure recovery, and cost-efficient scaling.\n\nImplement and maintain end-to-end training pipelines for Large Language Models.\n\nRFT and Reinforcement learning to the fine tuning and training sections\n\nDistillation and reinforcement learning pipelines (e.g., preference optimization, policy optimization, reward modeling).\n\nDataset, model, and experiment management: versioning, lineage, evaluation, and reproducible fine-tuning at scale.\n\nWhat You’ll Bring to the Team:\nAdvanced degree in Computer Science, Engineering, or a related field.\n\n4-5+ years of industry experience leading and driving impactful projects in the AI Space\n\nExperience in Generative AI (Large Language Models, Multimodal).\n\nHands-on experience training, fine-tuning, and aligning LLMs using Reinforcement Learning and Reinforcement Fine-Tuning (RFT) techniques.\n\nProactive and collaborative approach with the ability to work autonomously\n\nPassion for building cutting-edge AI products and solving challenging technical problems.\n\nBonus Points:\nProficiency in Golang or Python for large-scale, production-level services and PyTorch\n\nContributions to open-source AI projects such as vLLM or similar frameworks.\n\nPerformance optimizations on GPU systems and inference frameworks.\n\nBenefits:\nCompetitive compensation\n\nRestricted Stock Units\n\nPaid time off & paid holidays\n\nComprehensive health, dental & vision insurance\n\nEmployer contributions to HSA account\n\nPaid parental leave\n\nPaid life insurance, short-term and long-term disability\n\nProfessional development & tuition reimbursement\n\nMental health & wellness support\n\nCommuter benefits (parking & transit)\n\nCell phone stipend\n\n401(k) Retirement plan with company match up to 4% of salary\n\nVolunteer time off\n\nCompensation Range\nCompensation will be paid in the range of up to $250,000 - $300,000 + Bonus. Restricted Stock Units are included in all offers. Compensation to be determined by the applicants knowledge, education, and abilities, as well as internal equity and alignment with market data.\nCrusoe is an Equal Opportunity Employer. Employment decisions are made without regard to race, color, religion, disability, genetic information, pregnancy, citizenship, marital status, sex/gender, sexual preference/ orientation, gender identity, age, veteran status, national origin, or any other status protected by law or regulation.","description_format":"text","description_chars":4002,"description_truncated":false,"requirements":{"experience_years_min":4,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Equity","Life insurance","Parental leave","Professional development","Restricted stock units","Retirement plans","Vision insurance"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Data Centers & Colocation","AI Compute & Inference"],"lifecycle":[{"event":"open","at":"2026-11-06T12:44:39Z"}],"visa":[{"country":"US","licensed_sponsor":true,"adverts_offering_sponsorship_24m":0,"sanctioned_now":false,"evidence":"H-1B filings in 12 months: 13","filings_12m":13,"filings_prev_12m":0,"green_card_filings_12m":0,"median_offered_wage_usd":237500,"route":null,"cap_exempt":false,"checked_at":"2026-11-07T07:57:00+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)"],"filings_for_role_12m":9}],"liveness":{"score":63,"band":"ok","label":"Likely open","p_open":1,"p_active":0.632,"p_room":1,"age_days":1,"expected_fill_days":57,"reasons":["conf:2","stale_co","velocity","win:early","comp:brand"],"computed_at":"2026-11-08T05:47:12Z"},"pay":{"stated_usd_annual":300000,"is_top_pay":true},"html_url":"https://alion.io/job/crusoe-staff-software-engineer-ai-model-lifecycle","json_url":"https://alion.io/job/crusoe-staff-software-engineer-ai-model-lifecycle.json","meta":{"generated_at":"2026-11-08T10:28:59Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":22597,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-09T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":48024},"rest":"https://alion.io/mcp/rest/get_company?id=48024"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcrusoe-staff-software-engineer-ai-model-lifecycle"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fcrusoe-staff-software-engineer-ai-model-lifecycle"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fcrusoe-staff-software-engineer-ai-model-lifecycle"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/crusoe-staff-software-engineer-ai-model-lifecycle\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcrusoe-staff-software-engineer-ai-model-lifecycle"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3867294}},{"tool":"search_jobs","arguments":{"company":"crusoe.ai","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3867294},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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