ApplySarthi

Software Engineer, AI Agent

Hex Technologies

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Preparing for this interview

Interviews for software roles keep coming back to AWS, Python, Java, System design. Practise those questions before you sit with Hex Technologies.

Questions you are likely to be asked

  1. Why do you want to join Hex Technologies?
  2. What is your experience with TypeScript? Tell me one thing you learned the hard way.
  3. How did you know your model was actually good, and not just good on your test set?
  4. Tell me about a time the data was messy or wrong. What did you do?
  5. How would you explain your model's result to someone who is not technical?

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About the role

We are looking for senior and staff-level fullstack engineers eager to join the team building our leading Magic AI features.

At Hex we're deeply focused on building powerful, integrated AI features that augment and accelerate analytics workflows. The possibilities here are incredible, and we're uniquely positioned to re-invent the way people think about understanding data.

In this role, you’ll take the lead on building AI-powered features into Hex, partnering closely with our Research team on context and model prompting, and the rest of our product engineering teams on integrating into the platform. The fruits of your work will fundamentally change the way that many thousands of people work with data, and give you a front-row seat to the most exciting technological shift in our lifetimes. As part of our Agent Platform team, you’ll own the scalable agent infrastructure powering today’s most powerful data agents, as well as the cutting-edge experimentation tooling that allows the rest of the team to rapidly deliver new AI features in the product.

We'd love to hear from you if you have:

This role will be hybrid (1-2 days per week) based out of our San Francisco, California headquarters or NYC office. 


Our stack

Our product is a web-based notebook and app authoring platform. Our frontend is built with Typescript and React, using a combination of Apollo GraphQL and Redux for managing application state and data. On the backend, we also use Typescript to power an Express/Apollo GraphQL server that interacts with Postgres, Redis, and Kubernetes to manage our database and Python kernels. Our backend is tightly integrated with our infrastructure and CI/CD, where we use a combination of Terraform, Helm, and AWS to deploy and maintain our stack.


In addition to our unique culture, Hex proudly offers a competitive total rewards package, including but not limited to, market-benched salary & equity, comprehensive health benefits, and flexible paid time off.

The salary range for this role is: $198,750 - $295,000

The salary range shown may be a reflection of additional factors such as geographical location and skill ranges/levels we’re open to. Placement in the salary range will be decided upon completion of the interview process, taking into account factors like leaving room for growth, internal fairness & parity, your demonstrated skills, and the depth of your experience. Our Recruiting team will be able to provide more details during the interview process.

By submitting an application the candidate consents to the use of their personal information in accordance with the Hex Privacy policy: https://learn.hex.tech/docs/trust/privacy-policy.

Hex Technologies uses AI-assisted tools as part of our application review process, including for resume screening and fraud detection. These tools help our team evaluate applications and verify applicant information. All AI-generated recommendations are reviewed by a member of our recruiting team before any hiring decision is made. No application is automatically rejected based solely on an AI tool's output.

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Listed on greenhouse · posted 2026-02-19. ApplySarthi collects openings and links to application pages; the role is advertised by Hex Technologies, not by us.