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

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

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, then collaborate on a doc that sets clear expectations.

  3. Build

    We join your codebase and Slack, work with 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.

  • RubricFounder-level engineersTypical agencyA rotating team behind an account manager
  • RubricShipping in your codebase within daysTypical agencyWeeks of discovery decks
  • RubricA research lab testing what’s nextTypical agencyLast year’s playbook
  • RubricBuilt to hand offTypical agencyOptimized to keep you on a retainer

$40kUSD per 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
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
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The Grid

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