Founding Engineer

Reposted 2 Months Ago
Be an Early Applicant
San Francisco, CA, USA
In-Office
180K-220K Annually
Mid level
Artificial Intelligence • Marketing Tech
The Role
Build and maintain backend systems and distributed cloud infrastructure for an AI-driven tax-prep platform: vision-language model pipelines, document data extraction, tax software integrations, and client-facing features to improve speed, accuracy, and reliability.
Summary Generated by Built In
Magnetic is hiring a Founding Software Engineer to join our small team. You’ll be responsible for building and maintaining the backend systems that power our AI-driven tax prep platform, including model pipelines, data extraction logic, and integrations with tax software, as well as improving our client-facing touchpoints. You’ll work closely with engineering, product, and tax operations to ship features that directly improve speed, accuracy, and reliability for our customers.

What You'll Build
  • Vision-Language pipelines that process and extract structured data from unstructured client tax documents, relying on AI models, deterministic rules, and human-in-the-loop corrections.
  • Systems to test and improve extraction accuracy on complex tax forms, handwritten notes, brokerage statements, and K-1s.
  • Distributed cloud infrastructure to process thousands of client files concurrently across multiple firms and tax seasons.
  • Integrations with major tax software systems, file portals, and document management tools.
  • Features to improve our own client-facing surface area (intake, output artifacts, review process)

In line with our goal of creating a small, talent-dense team that genuinely enjoys working together, we believe in paying well and doing so transparently. When possible, we benchmark all of our roles using Pave (pave.com) and tie our compensation to be in line with milestones we aspire to, not where we currently are. This means that although we are a seed-stage company, we benchmark against data from companies that are Series A+ ($10M - $20M raised) located in the SF Bay area, so as to set compensation to:

  • Salary - 60th percentile of Series A cos
  • Equity - 75th percentile of Series A cos (as measured by value, not %age)


The base pay range for this role is $180,000 – $220,000 per year.

Skills Required

  • Build and maintain backend systems for an AI-driven tax platform
  • Design and implement vision-language/model pipelines to extract structured data from unstructured tax documents
  • Develop systems to test and improve extraction accuracy for complex tax forms, handwritten notes, brokerage statements, and K-1s
  • Architect and operate distributed cloud infrastructure to process thousands of client files concurrently
  • Integrate with major tax software systems, file portals, and document management tools
  • Improve client-facing surfaces (intake, output artifacts, review processes) in collaboration with product and tax operations
Am I A Good Fit?
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The Company
HQ: New York, NY
39 Employees
Year Founded: 2008

What We Do

Magnetic is an artificial intelligence company that uses machine learning to deliver smarter, faster, and more effective advertising. Our powerful AI platform continuously analyzes the attributes of over 350 million live user profiles alongside real-time inventory supply and bid opportunities to deliver highly performant audiences and profitable campaigns for our clients. Learn more at magnetic.com or email us at [email protected].

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