Founding ML Engineer

extend· Engineering
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📍 New York CityFullTime💰 USD 200K–350K/yr

About this role

Extend is building a modern document processing cloud. We're on a mission to transform how the world works with unstructured data.

As a Machine Learning Engineer at Extend, you’ll be responsible for building state-of-the-art document processing infrastructure. The work you do will impact every single customer across the millions of documents that our system ingests and processes every month.

We’re looking to hire engineers who think creatively about problems, keep up to date on the latest in AI research, push for real-world customer impact (not only theory), and are excited about helping businesses tackle one of their most painful problems with AI.

Why you should consider joining

  • We've grown revenue 400% last year to several million ARR, with our growth continuing to accelerate

  • We have a product loved by users and being used in mission-critical flows at enterprises (Square, Zillow, Chime) and startups (Brex, Mercury, Checkr), and many more

  • The market for document processing has expanded 1000x due to LLMs, and all existing solutions are low NPS

  • We're punching well above our weight, supporting customer and revenue metrics with half the team size of other startups — everyone joining at this stage will have outsized impact

  • We've raised our series A & de-risked the business, but there's tremendous upside ahead; now's the perfect time to join.

  • You'll be joining a talent dense team (e.g. former founders, world record holders) operating in a high performance culture, in-person in NYC, with high equity ownership

  • We're tackling novel, unsolved problems at the intersection of LLMs, complex data processing, and human ↔ AI interfaces

  • You'll get a front row seat to how a successful startup is built with plenty of leadership opportunities as we grow quickly

We're a lean team, and our customer base is growing too fast for us to keep up. We're looking for talented engineers to join our team and execute on an ambitious roadmap.

Role

  • Training and deploying SOTA vision models for document processing

  • Design novel LLM techniques for increasing the complexity of use cases and data streams that Extend can be applied to

  • Monitor existing models in production, understand what’s working well (and what isn’t), and run experiments to solve those issues

  • Have complete ownership over the work you do — as a founding team member, you’ll have the opportunity to truly own large areas of product and engineering and have direct relationship with customers.

  • Work directly with the CEO, CTO, and other founding members and help build out our team.

Benefits

Beyond the below, we care deeply about each of our candidates on a personal level. We take the time to understand your needs to craft a package designed for you:

  • Insurance - 90% health insurance premium coverage

  • Relocation - for candidates based outside of NYC

  • Unlimited PTO policy - we trust everyone like owners, take what you need

  • Daily lunch & snacks covered (plus dinner if you're in the office late) - you'll never go hungry and you help pick the snacks

  • Unlimited token / tooling access - no handicaps on your productivity

  • Learning and development investment - we invest heavily in our team and support your growth

Extend is an Equal Opportunity Employer. We consider all qualified applicants for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, national origin, age, disability, genetic information, citizenship status, marital status, pregnancy, protected veteran status, or any other characteristic protected by applicable federal, state, or local law.

Frequently Asked Questions

What is the salary for the Founding ML Engineer role at extend?
The listed salary for this Founding ML Engineer position at extend is USD 200K–350K/yr. This is an FullTime role.
Where is the Founding ML Engineer position at extend located?
This Founding ML Engineer role at extend is based in New York City. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Founding ML Engineer role at extend full-time or part-time?
This is listed as a FullTime position. It is posted as a Founding ML Engineer role in the Engineering department at extend.
Which team or department does the Founding ML Engineer at extend belong to?
This Founding ML Engineer position is part of the Engineering department at extend. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Founding ML Engineer position at extend?
Click the "Apply Now" button on this page. You will be redirected to extend's official application portal hosted on ashby where you can submit your application directly.
When was the Founding ML Engineer job at extend posted?
This Founding ML Engineer position at extend was posted on Jul 20, 2025. Apply as soon as possible — early applications are often reviewed first.
Founding ML Engineer
extend · 💰 USD 200K–350K/yr
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You'll be redirected to extend's official application page on Ashby ATS.