1 slot open in Q4 2026

The team for your hardest problems.

Rubric is a small team of founder-level engineers with our own research lab. We join your team, learn your problem, and build it with you all the way to production.

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Trusted by

From Fortune 500 retail to Series A startups

  • Albertsons logo
  • Cal.com logo

What we do

What teams hire us for.

Complex software with AI at its core.

  • Agents in production

    AI assistants and agents that do real work for your users, with the testing and guardrails to trust them.

    Built for

    Albertsons · Cal.com · Sligo AI

  • Products, end to end

    New products and major features, built full stack from the first commit to launch, in your codebase.

    Built for

    Gumloop · E2B · Graphite

  • Model work

    Evals, fine-tuning, and small, fast models for when a frontier model is too slow, too costly, or not accurate enough.

    Built for

    A Series B company in stealth

Client work

What we’ve built.

For Fortune 500 retail, developer platforms, and the startups in between.

All client work

How it works

Built to hand off.

We move fast, work directly with your team, and leave you with a system you own and run without us.

  1. Call

    Thirty minutes with a founder. If we’re not the right team, we’ll tell you.

  2. Scope

    We research your problem and write a scope of work with you that sets expectations on both sides.

  3. Build

    We join your repo and your Slack, work alongside your team, and ship from the first week.

  4. Hand off

    Docs, tests, and a walkthrough. Your team runs it without us.

Common questions

Pricing

An acquihire, for one project.

One flat monthly price, with no hourly billing or change orders.

  • Founder-level engineersA rotating team behind an account manager
  • Shipping in your codebase within daysWeeks of discovery decks
  • A research lab testing what’s nextLast year’s playbook
  • Built to hand offOptimized to keep you on a retainer

Every engagement

$40kper month

  • A lead engineer, full time, in your codebase
  • A second engineer on architecture, review, and planning
  • A shared Slack channel, with both of us in it
  • Code, docs, and tests that you own

1 slot open in Q4 2026

Book a call

Lab

Our lab is our edge.

We test new models and methods on our own systems first. What works goes into client work before it’s common practice.

Inside the Lab

What clients say

In their words.

  • “Professional executors who came in, crushed the task and handed it off gracefully.”
    Max Brodeur-UrbasCEO, Gumloop
  • “They became an organic extension of our engineering team, contributing to our codebase within days.”
    Vasek MlejnskyCEO, E2B
  • “They’re fluent in novel technologies, creative, highly responsive.”
    Merrill LutskyCEO, Graphite
  • “Working with Rubric has been like having a CTO in our back pocket.”
    Mitchell WhiteFounder, Weave
  • “Their knowledge of complex AI solutions is impressive.”
    Daniel BevanCTO, Sligo AI

Bring us your hardest problem.

Tell us what you’re working on. You’ll talk with a founder, and we reply to every request within a day.

Book a call

Availability

  • Q4 20261 slot open
  • Q1 20272 slots open

Newsletter

The Grid

What we’re learning about building with AI. Two short emails a month.