Staff Applied AI Inference Engineer
$215k - $260k • San Francisco, CA - US • FullTime
Posted 1mo ago
Remote Work Policy
On-site
Employment Type
FullTime
Categories
Applied AI Engineer
About the job
Crusoe is seeking a Staff Applied AI Inference Engineer to accelerate the abundance of energy and intelligence by optimizing large language models for production environments. This role involves owning the inference stack end-to-end, from profiling costs and implementing modern optimization techniques to deep dives into serving code when defaults are insufficient. The work is applied, focusing on real customer deployments with varying models, traffic, latency targets, and cost constraints. You will collaborate with customer engineering teams to tailor deployments, transition workloads from proof-of-concept to production, and ensure engineered gains are realized by users. This is a hands-on engineering position requiring coding, profiling, and low-level optimization, with a customer-facing component involving product and technical solutions work.
Responsibilities
- Bring current inference techniques into production and refine them.
- Design and optimize serving architectures, including prefill and decode disaggregation, request routing, and related approaches.
- Work down into the serving stack, from frameworks like vLLM and SGLang to the CUDA kernels underneath, profiling and running in-depth analysis to find and fix performance problems.
- Adapt and scale optimization methods across many kinds of ML models, with an emphasis on large language models.
- Profile and tune deployments against clear targets for latency, throughput, and cost, and keep them dependable under real traffic.
- Tailor deployments to each customer's models and constraints, partnering with their engineering teams to move a workload from an early proof of concept through to a live, well-monitored production service.
- Build and support the software and product features around the inference stack in a production setting, using one or more general-purpose languages, with Python preferred.
- Experiment quickly: take fuzzy goals, shape them into clear specs and focused proofs of concept, run fast experiments to find what works, and ship well-tested results without delay.
- Own delivery end to end, from the first experiment through to the optimization running in production, keeping the underlying performance goals, clear specs, and follow-through front of mind, and drafting features and product requirement documents together with other engineering and product teams.
- Work through ambiguity and make sound calls on tradeoffs and tooling, steering away from complexity that is not needed.
- Take real pride and ownership in your work, hold yourself accountable, and look for the same from the people around you.
Requirements
- A Bachelor's, Master's, or Ph.D. in Computer Science, Engineering, Mathematics, or a related field.
- Hands-on experience shipping code in production with one or more general-purpose languages, such as Python or C++, with a strong preference for Python.
- Familiarity with methods for optimizing LLMs for high throughput / low latency inference.
- Comfort with modern LLM serving frameworks such as vLLM or SGLang, and with profiling and analyzing performance down to the kernel level.
- A firm grasp of how GPUs are built and how they behave.
- Clear interest and hands-on experience with large language models.
- A working knowledge of AI/ML pipelines and the full path of developing and deploying ML models.
- Strong communication skills, particularly when explaining hard technical topics to customers and teammates.
- A track record of making software systems run faster, especially for large language models.
- Experience with CUDA or comparable technologies.
- A strong command of software engineering fundamentals, with a record of building and shipping AI/ML inference systems.
- Experience with Docker and Kubernetes.
- Prior work building or tuning AI/ML projects, particularly in a customer-facing setting.
Benefits
- Competitive compensation and equity packages
- Restricted Stock Units
- Paid time off, paid holidays & leave of absence programs
- Comprehensive health, dental & vision insurance
- Employer contributions to HSA account
- Paid parental leave
- Paid life insurance, short-term and long-term disability
- Professional development & tuition reimbursement
- Mental health & wellness support
- Commuter benefits (parking & transit)
- Cell phone stipend
- 401(k) Retir