Crusoe · 4 hours ago
Senior Software Engineer, Managed AI
San Francisco, CA
Full-time
Onsite
Mid, Senior Level
$166K/yr - $201K/yr
4+ years expCrusoe is on a mission to accelerate the abundance of energy and intelligence through sustainable technology. The Senior Software Engineer for the Model LifeCycle team will focus on building a managed platform for application development, specifically leveraging Machine Learning models including Large Language Models.
AI InfrastructureArtificial Intelligence (AI)Data CenterEnergyEnergy ManagementOil and Gas
Responsibilities
Implement and maintain systems for fine-tuning large foundation models (SFT, PEFT, LoRA, adapters), including multi-node orchestration, checkpointing, failure recovery, and cost-efficient scaling
Implement and maintain end-to-end training pipelines for Large Language Models
Implement components for distillation and reinforcement learning pipelines (e.g., preference optimization, policy optimization, reward modeling)
Develop and maintain core agent execution infrastructure
Implement features for dataset, model, and experiment management, focusing on versioning, lineage, evaluation, and reproducible fine-tuning
Work closely with Senior Engineers and Principal Engineers, as well as product and platform teams, to implement system abstractions and APIs
Contribute to technical discussions on training runtimes, scheduling, storage, and model lifecycle management
Engage with the open-source LLM ecosystem
This role involves significant implementation ownership for core system components
Qualification
Required
4-5+ years of industry experience with demonstrated history of consistent success leading a varied portfolio of initiatives across your function
Bachelor's degree in Computer Science, Engineering, or a related field
Experience delivering production-ready features
Familiarity with essential cloud-based services (e.g., compute, storage, networking)
Familiarity with Generative AI (Large Language Models, Multimodal)
Experience with AI infrastructure components (training, inference)
Preferred
Proficiency in Golang or Python for production services
Familiarity with PyTorch
Some experience with training and fine-tuning LLMs
Proactive and collaborative approach
Strong communication and interpersonal skills
Passion for building AI products and solving technical problems
Benefits
Industry competitive pay
Restricted Stock Units in a fast growing, well-funded technology company
Health insurance package options that include HDHP and PPO, vision, and dental for you and your dependents
Employer contributions to HSA accounts
Paid Parental Leave
Paid life insurance, short-term and long-term disability
Teladoc
401(k) with a 100% match up to 4% of salary
Generous paid time off and holiday schedule
Cell phone reimbursement
Tuition reimbursement
Subscription to the Calm app
MetLife Legal
Company paid commuter benefit; $300/month
Company
Crusoe
Crusoe is a vertically integrated AI infrastructure company that builds and operates data centers powered by energy sources.
1001-5000 employees
H1B Sponsorship
Crusoe has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (69)
2024 (14)
2023 (2)
2022 (1)
2021 (1)
Funding
Current Stage
Late StageTotal Funding
$3.9BKey Investors
Mubadala Capital,Valor Equity PartnersVictory Park CapitalBrookfield Asset Management
2025-12-19Secondary Market
2025-10-23Series E· $1.4B
2025-08-25Debt Financing· $175M
Leadership Team
Chase Lochmiller
Co-Founder and Chief Executive Officer
Cully Cavness
Co-Founder, President and Chief Strategy Officer
Recent News
2026-01-22
Bizjournals.com Feed (2025-11-12 15:43:17)
2026-01-16
Company data provided by crunchbase