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Founding Engineer

Fastino

Fastino

Other Engineering
San Francisco, CA, USA
Posted on Jul 2, 2025

Founding Engineer (LLM Startup)

Full-time | Onsite | Reports to Founders

Introduction:

  • Join us at Fastino as we build the next generation of LLMs. Our team, boasting alumni from Google Research, Apple, Stanford, and Cambridge is on a mission to develop specialized, efficient AI.
  • Fastino has raised almost $25M (as featured in TechCrunch) through our seed round and is backed by leading investors including Microsoft, Khosla Ventures, Insight Partners, Github CEO Thomas Dohmke, Docker CEO Scott Johnston, and others.

Key Responsibilities:

  • Design and develop interactive, scalable agents and web applications using JavaScript, TypeScript, and Python
  • Build and maintain server-side APIs and MCP servers and integrate them with front-end applications.
  • Work closely with the Fastino research team to deploy language models to production, optimized for performance and scalability.
  • Build data generation and testing pipelines to ensure model reliability and accuracy.
  • Architect, deploy, and maintain production-level infrastructure in cloud environments (AWS, GCP, or Azure) to support both web applications and ML operations.
  • Ensure high availability, scalability, and security for deployed applications and services in enterprise environments.
  • Adhere to industry best practices in code quality, testing, and documentation.

Requirements:

  • Proficiency in Python and TypeScript
  • Experience in deploying and managing cloud infrastructure on platforms like AWS, GCP, or Azure.
  • Knowledge of containerization (Docker, Kubernetes) and orchestration for deploying scalable applications.
  • Preferred: Experience with data engineering practices, especially for large-scale data processing.

Professional Experience:

  • 3+ years of experience in full-stack development, ideally with a focus on JavaScript frameworks.
  • 2+ years of experience in writing and deploying machine learning scripts in Python.

Why Join Us?

  • Supportive Environment: Benefit from the resources of Microsoft and venture funding, collaborating with top-tier talent from renowned universities.
  • Top-Tier Compute: Enjoy a dedicated GPU cluster for research.
  • Impactful Work: Your contributions will directly shape the future of AI applications, making technology more accessible, eco-friendly and dev friendly!
  • Competitive Benefits: Receive competitive salary, stock options, health benefits, and more.