Data First Jobs

Fonzi AI

Data Engineer

Full Time · In Office · San Francisco, California (USA)

Posted Oct 22, 2026

Work Options
Cloud Stack
Positions
Job Type
Position Group
  • Data Engineers: Let 250+ Companies Compete For You
  • Fonzi is an AI recruiting company.
  • No job boards. No recruiter spam. Companies request to interview you and submit salary bids upfront.
  • Every week, hiring managers at 250+ pre-vetted startups in NYC and San Francisco review a curated group of engineers. They're reading profiles optimized by our team to surface what matters: what you've built, how you think about systems, and whether you're the kind of engineer who ships.
  • Companies on Fonzi are Applied AI startups, Frontier labs, Hypergrowth startups, PE firms starting lean AI teams and more. They're backed by investors like A16z, Sequoia Capital, General Catalyst, Y Combinator and more.
  • How It Works
  • 5-minute application
  • We reach out, learn what you're building and what excites you, and optimize your profile
  • Hiring managers review the cohort and request interviews with candidates they want
  • Companies submit competing salary bids directly to you
  • You only interview where you're genuinely interested
  • Completely free. We have an iMessage agent + humans in the loop you can text anytime w/ questions or requests to help handle scheduling and coordination
  • Who We're Looking For
  • The data engineers who do best on Fonzi:
  • Have built and owned production data pipelines, from ingestion to warehouse to the teams and models that use them
  • Are strong in Python and SQL, and experienced with tools like Spark, dbt, Airflow, Kafka, Snowflake or BigQuery
  • Think about data quality, lineage and cost, not just getting the job to run
  • Have built data foundations for AI (training data, embeddings, retrieval, eval datasets) or want to
  • Thrive in startup environments where the problem is ambiguous and the team is small
  • Have 2-8 years of experience, ideally with experience at at least one high-growth company
  • What You'll Build
  • The companies on Fonzi are working on:
  • Data pipelines that feed AI models and agents with clean, reliable data
  • Retrieval and embedding infrastructure behind production RAG systems
  • Training and eval datasets that make models measurably better
  • Real-time and streaming data systems for fintech, healthcare and logistics
  • Warehouses and analytics foundations that scale from first customer to enterprise
  • Compensation
  • $170,000 to $290,000+ base salary depending on experience and role. Many positions include meaningful equity at pre-seed through Series B stage companies.
  • The Interview Process (Typical)
  • Screening conversation looking for communication skills, cultural fit and genuine curiosity about AI
  • Technical deep-dive on data architecture: pipelines, modeling and scale
  • Coding or pairing session on SQL, Python or a realistic pipeline problem
  • If you know that great AI starts with great data and you want to build that foundation, we want to hear from you.

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Data Engineer

Fonzi AI

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