First-time day at Superhuman

Fix ranking of stale threads without slowing briefings

Published Oct 28, 2026

You’re the ai / ml engineer. Your team is in the room.

The setting

makes productivity software for email-heavy workers and teams. is an AI assistant that takes on tasks across the browser, desktop and Superhuman apps, working from goals written in plain language.

Recent client commitments are competing with a larger volume of older conversation history.

Briefing quality depends on finding the latest decision without making retrieval slower or more expensive.

Who you’d be doing this for

“The client asked why we were discussing an option they’d already declined yesterday.”

Dawit Ndirangu · Agency Account Director · a character in this brief

Prepares client briefings from long email histories before status calls.

What is at stake

Agency account directors are opening outdated threads before client calls. You must weigh recency against relevance without slowing every briefing request.

Why it isn’t already fixed

Every obvious fix costs something else. That’s the part you’d have to decide.

  • recency signals vs. decision relevance
  • briefing trust vs. retrieval speed
  • shared ranking consistency vs. surface-specific delivery
  • model quality vs. serving cost

Why Superhuman

Superhuman Docs and Grammarly place Go in the moment client-facing workers need current context before an external conversation.

Written with these in mind

ranking-focused ML engineerLLM evaluation builderproduct-minded applied ML engineer

Not your kind of problem? 36 more at Superhuman, or browse every organization.

Where the organization context comes fromThe postings this brief was written from, and the reporting read before it.

The organization context comes from public information. The situation and characters are written for the brief.

Job postings it was written from

Public descriptions of the work at Superhuman. They are listed as sources, not as openings. The lines under a posting are its own words, where it meets this brief.

  • Machine Learning Engineer (opens in a new tab)
    • You'll own how the agent plans the work, picks the right agent or tool for each step, and sees long tasks through to the end.
    • Own Critical ML Systems: Develop and deploy sophisticated ML models for core product experiences, including search ranking and proactive suggestions that anticipate user needs.
  • Senior Design Technologist, AI Tooling (opens in a new tab)
    • You will help ensure our AI-native platform (spanning email, calendars, docs, and agents) is supported by scalable systems that maintain our high-quality standards.
  • AI Engineer (opens in a new tab)
    • Build high-quality evaluation datasets: Design, source, and curate golden sets, labeled data, and synthetic data for agent behaviors, search ranking, and proactive suggestions.
    • As Superhuman Docs’ collaborative workspaces evolve so users can solve arbitrarily complex tasks with agents, rigorous measurement will be what lets us ship with confidence.
  • Software Engineer, Full-Stack (opens in a new tab)
    • Build a Groundbreaking AI Agent Platform: Spearhead the development of a new AI platform inside the Superhuman Docs product of the Superhuman suite where multiple AI agents collaborate to solve complex user problems.

This is the setup. The work is inside.

Running it puts you in the room: the full situation and its constraints, stakeholders who push back in their own words, and the decisions that are yours to make. What you produce becomes a Day One Plan — work you can show someone instead of describing.

Other live briefs connected to this one, and what connects them.

Similar problems at other organizations

Like this one, each of these turns on deciding on evidence that's still thin.

The same setting, from another role

Each is set around Superhuman’s Superhuman Go, written for a different role. They’re separate briefs, not the same scenario.

Other problems with a similar purpose

In each of these, as in this one, the aim is to make a machine-driven decision dependable and fair at the exact real-world moment a customer is counting on it.