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AI Engineer - Fractional

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Job Title
AI Engineer
Job Location
San Francisco, CA
Job Description
About Fractional AI

Fractional AI is the dev shop for applied AI. We work with customers like Zapier, Airbyte, and Change.org to build their high-impact genAI applications.

Every C-suite in the country is trying to bridge the gap between AI in theory and AI in practice. We close this gap with exceptional engineering talent and custom end-to-end AI builds (see some of our case studies to learn more).

By joining Fractional AI, you’re stepping onto a San Francisco-based team working on genAI projects for top companies from the comfort of an engineering-first startup.

Why we're hiring for this role

Since launching in March 2024, we’re even more convinced of the need for an elite dev shop for transformational genAI projects. The unpredictability of genAI makes the gap between demo and production extremely challenging. Enterprises are struggling on their own, with only 10% of enterprises getting AI into production in 2023.

We exist to solve this problem and are growing our team of AI Engineers to take on this challenge.

Joining Fractional AI as an AI Engineer, you’ll play a leading role in building and shipping AI applications for our customers - from understanding customer needs to deploying solutions in their environments - all while shaping our engineering and broader Fractional culture for the next 100+ engineers. By the time you’ve completed your second project, you’ll have shipped LLM applications across more companies and use cases than the vast majority of AI engineers in the world.
What you bring to the table:
  • You write exceptional code + deeply care about the craft of coding (4+ years of experience): you build elegant, production-ready code; you have strong proficiency across multiple programming languages
  • You have a track record building with Large Language Models: you have experience building scalable applications with LLMs, using frameworks such as LangChain, LlamaIndex, etc.
  • You love solving hard, new problems: you are comfortable self-teaching, asking “why?,” and experimenting to solve problems you haven’t seen before
  • You are ‘start-up ready’: you jump in without instruction, embrace a ‘no job too big, no job too small’ mindset, and want to shape strategy and culture
  • You are comfortable talking with customers: you deeply care about the customer and skillfully navigate customer conversations to ensure what we’re building meets their needs
  • You are a great teammate: you are comfortable helping others (and asking for help), you champion integrity in everything, and want to build a one-in-a-career culture of personal growth
  • What you'll do:
  • Design and develop custom AI solutions tailored to the unique needs of our customers, ensuring seamless integration and scalability
  • Partner with a high-caliber team across the full project lifestyle, from requirements gathering, to prototyping, system design, coding, testing, deployment, and support
  • Actively shape our engineering and broader company culture - from how we learn, to how we hire, to how we celebrate - you’ll shape how we make Fractional a place we all love working
  • Our tech stack:
  • We’re generally tech stack agnostic - we work in our customers’ environments and code bases. A lot, but definitely not all, of our work is in python.
  • After working at Fractional AI for a few years, you’ll be an expert at using the various foundational models, building with tools like Langchain/Langsmith, and various other tools and frameworks (e.g., OpenPipe, Pinecone, ChromaDB).
  • A day in the life:
  • You’re the tech lead for one of our customer projects - it may be automating a call center with AI phone agents or building an AI content moderation system – each project is different.
  • You’ll join the team in our SF office between 8am-10am pacific time.
  • You’ll dive into one of the higher priority items for the morning (say building out an evals suite) - testing different permutations.
  • You have a weekly standup with the customer (the CTO at the client) to chat through tradeoffs, progress, and timeline.
  • You join team lunch (which doubles as the Fractional AI cross-project standup) to hear about different projects we’re working on … the lunch will turn into a lively debate about Weights and Biases v. Braintrust capabilities.
  • You’ll have some solo heads down time to continuing jamming on the high priority pieces for that 2-week sprint.
  • Maybe you join a prospective customer call to share your perspective on what’s technically feasible on that potential project.
  • You’ll head home between 5pm-6:30pm.
  • Who you'll work with:
  • This role will report directly to Eddie, our Co-Founder and CTO.
  • You’ll work very closely with other engineers on the team -- the vast majority of our projects have multiple Fractional AI engineers working on them at once.
  • You’ll also spend a lot of time collaborating with our CEO, Chris, and Chairman, Travis.
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    Fractional Headquarters Location

    San Francisco, CA

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    Fractional Company Size

    Between 10 - 50 employees

    Fractional Founded Year

    2021

    Fractional Total Amount Raised

    $20,500,000

    Fractional Funding Rounds

    View funding details
    • Series A

      $15,000,000 USD

    • Seed

      $5,500,000 USD