AI Research Engineer

Mosaic.tech; San Francisco (CA); Hybrid; USD 214,000 - 285,000; Full time

Benefits offered by this job

Health benefits

Equity

Flexible PTO

Hybrid work model

Job summary

Hex Technologies is hiring senior AI Research Engineers to partner with product teams and push the Notebook Agent and context engine forward. You will run experiments, fine-tune models, deploy AI infrastructure, and build experimentation tooling for thousands of users.

You’ll own 0-to-1 features, define architectures, and ship experiences that change how data scientists and analysts work in a modern, data-driven platform. Remote-friendly with hybrid office days in SF or NY.

Qualifications

• Experience getting AI/ML capabilities into production with real users.
• Strong interest in applying AI to business problems.
• Understanding of core MLOps/SW architecture concepts for modern ML-based apps.
• Ideal candidates have strong Infra focus within MLOps.
• Comfort with Python & JavaScript/TypeScript and openness to both.
• Demonstrated ability to ship reliable, well-tested features.

Responsibilities

• Build features from 0 to 1 and shape product experiences.
• Help determine architecture and stack for AI-enabled capabilities.
• Ship experiences that change how data scientists and analysts work.
• Work at the cutting edge of production AI applications and systems.

Skills

Python

JavaScript/TypeScript

MLOps

Distributed systems

Experimentation

Technical leadership

Education

Bachelor's degree or equivalent experience

Tools

React

TypeScript

Express

GraphQL

PostgreSQL

Kubernetes

Terraform

AWS

Job description

About the role

Hex is an AI-powered platform for modern Data Science and Data Analytics workflows. AI Research Engineers at Hex partner with product teams to build industry-leading AI experiences such as the Notebook Agent. In the process, AI Research Engineers will run experiments, fine-tune models, deploy AI infrastructure, and build and maintain experimentation tooling. As an AI Research Engineer partnered with Hex's product teams, your focus will be driving Hex's context engine and pushing forward the capabilities of our Notebook Agent. Built for people doing the most complex and impactful data work in an organization, the Notebook Agent is a highly technical data copilot that writes SQL and python, builds beautiful reports and visualizations, and collaborates with the analyst on new avenues of inquiry. Whether its pushing the frontiers of SQL generation quality or using LLMs to evaluate agent threads, your job will be to enable the data teams that work in Hex to build out highly accurate and curated data experiences for their stakeholders, unlocking the power of data driven decisions for the rest of the business. If you’re a strong builder excited to bring these capabilities to thousands of users, come do it on the best Data Science platform around, with the best user context.

We are looking for a senior engineer (from an AI Eng, SWE or MLE background) eager to rapidly expand our capabilities in several greenfield applications. As one of our team’s early hires, you will work on a variety of initiatives including:

• Building features and experiences from 0 to 1
• Partnering on determining the architecture and stack for our AI-enabled capabilities
• Shipping product experiences that fundamentally change the way that Data Scientists and Analysts operate
• Working at the cutting edge of production AI applications

This type of ownership will provide incredible opportunities for personal and professional growth. You will have ample technical and team leadership opportunities, depending on your interests.

We aim to deliver AI capabilities that radically accelerate and augment the data science workflow – we’ve got an exciting roadmap and are willing to share more details during the process. We’re particularly interested in candidates who bring inspired excitement about what is possible in this space.

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

• Experience getting AI/ML capabilities into production and serving real users – we’re not currently looking for new grad folks.
• A lot of enthusiasm for applications of AI to real business problems.
• Understanding of core MLOps/SW Architecture concepts for modern ML-based applications.
  • Ideal candidates are strong on Infra aspects of MLOps as well.
• You’re comfortable working in both Python & JS/TS – it’s okay if you’re only strong in one, but openness to both is important.
• Experimentalist mindset – understanding that quick iteration, and discerning critical thinking, can yield rapid progress on new challenges.
• Interest in the data space, and a love of shipping great products and building tools that empower end users to do more.
• Experience maintaining a high quality bar for design, correctness, and testing.

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.

This is a full-time role based out of either our San Francisco or New York office. Employees are encouraged to come into the office at least twice a week, with Tuesdays and Thursdays being our main in-person days.

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: $214,000 - $285,000

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.