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Founding Engineer

Job in San Francisco, San Francisco County, California, 94199, USA
Listing for: Stealth Startup
Full Time position
Listed on 2026-07-25
Job specializations:
  • Software Development
    AI Engineer (Applied/Software), Cloud Engineer - Software, DevOps, Machine Learning/ ML Engineer
Salary/Wage Range or Industry Benchmark: 230000 - 320000 USD Yearly USD 230000.00 320000.00 YEAR
Job Description & How to Apply Below

We're looking for a Founding Engineer with deep AI infrastructure experience to design, build, and scale the systems that power our products. This is a hands-on, high-ownership role: you'll own everything from model serving and inference optimization to data pipelines, evaluation frameworks, and the cloud infrastructure underneath it all.

Requirements:

  • Architect and build the core AI infrastructure stack — model serving, inference pipelines, orchestration, and scaling
  • Design and optimize LLM-based systems, including RAG pipelines, agentic workflows, fine-tuning infrastructure, and prompt/eval frameworks
  • Build reliable, observable, cost-efficient inference systems (latency, throughput, and GPU utilization optimization)
  • Stand up and own cloud infrastructure (AWS/GCP/Azure), CI/CD, containerization, and orchestration (Docker, Kubernetes)
  • Build data pipelines for ingestion, processing, embedding, and retrieval at scale
  • Establish engineering foundations — testing, monitoring, deployment practices, and security — that the team will build on for years
  • Work directly with founders on product direction, technical strategy, and early customer deployments
  • Help recruit, interview, and mentor the engineers who come after you

What we're looking for:

  • 4+ years of software engineering experience, with significant time spent on ML/AI infrastructure, platform engineering, or backend systems at scale
  • Hands-on experience deploying and scaling LLM applications in production (model serving frameworks such as vLLM, TGI, Triton, or managed equivalents)
  • Strong proficiency in Python; comfort with Go, Rust, or Type Script is a plus
  • Deep familiarity with cloud infrastructure (AWS, GCP, or Azure), Kubernetes, and infrastructure-as-code (Terraform or similar)
  • Experience with vector databases, embedding pipelines, and retrieval systems
  • Startup mindset: bias toward shipping, comfort with ambiguity, and willingness to work across the stack when needed
  • Strong communication skills and the judgment to make pragmatic build-vs-buy tradeoffs

Nice to have:

  • Experience as an early or founding engineer at a startup
  • GPU cluster management, distributed training, or inference optimization (quantization, batching, caching)
  • Experience with agent frameworks, tool use / function calling, and multi-modal systems
  • Prior work in fast-moving product environments with direct customer exposure
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