Founding Engineer - Machine Learning

Posted:
7/10/2026, 1:57:13 AM

Location(s):
San Francisco, California, United States ⋅ California, United States

Experience Level(s):
Expert or higher ⋅ Senior

Field(s):
AI & Machine Learning

Workplace Type:
Remote

Pay:
$220k–$300k/yr

About the Role

A well-funded AI/ML platform startup (Series A) based in Mountain View, CA is looking for a Founding Engineer – Machine Learning to build and scale core ML systems from the ground up. You'll join a small, high-velocity team working closely with the founders to establish technical culture, reliable ML pipelines, and measurable product impact. This is a rare opportunity to shape the architecture and direction of ML infrastructure at an early stage.

What You'll Do

  • Build and optimize end-to-end ML pipelines from data ingestion through deployment.

  • Implement and fine-tune LLMs, embeddings, and generative models for real-world use cases.

  • Develop efficient training and inference systems leveraging distributed compute.

  • Partner with data and product teams to translate ideas into measurable ML outcomes.

  • Contribute to model monitoring, evaluation, and continual learning frameworks.

  • Establish best practices for model versioning, reproducibility, and scalability.

  • Move quickly between experimentation and production deployments, balancing research and engineering rigor.

What We're Looking For

Required:

  • 3–10 years of experience as an ML Engineer, Applied Scientist, or Research Engineer.

  • Strong ML fundamentals: data preprocessing, feature engineering, model training, and optimization.

  • Proficiency in Python and at least one deep learning framework: PyTorch, TensorFlow, or JAX.

  • Experience with distributed training/inference and cloud ML infrastructure (AWS, GCP, or Azure).

  • Hands-on experience building end-to-end ML pipelines from data ingestion to production deployment.

  • Familiarity with MLOps tooling (e.g., Weights & Biases, MLflow) and model monitoring approaches.

  • Comfortable working with large datasets and high-throughput systems.

  • Bias for action, ability to work autonomously, and eagerness to build systems from scratch.

  • Willingness to work onsite in Mountain View, CA.

Nice to Have:

  • Experience with vector databases and retrieval-augmented generation (RAG) workflows.

  • Experience with continual learning, model monitoring, and evaluation frameworks.

Compensation & Benefits

  • Salary: $220,000 – $300,000 USD annually

  • Early-stage equity commensurate with a founding engineer role

  • Note: Visa sponsorship is not available for this position

Location

Onsite in Mountain View, CA. This is not a remote role.