Contents

Collaboration & Process

Communication

Asking, explaining, updating and disagreeing well.

Backend Engineer track

Junior

Write correct code, ship small changes safely, ask good questions.

Core: start here

5 more junior concepts

Mid-level

Own a feature end to end without hand-holding.

Core: start here

6 more mid-level concepts

Senior

Own a system, its failure modes, and its trade-offs.

Staff

Shape how many teams build, across systems.

Principal

Set technical direction for the organization.

Nothing here yet.

Data Analyst track

Junior

Write correct SQL, build trusted dashboards, ask good questions.

Core: start here

4 more junior concepts

Mid-level

Own an analysis end to end, from vague question to recommendation.

Senior

Own experimentation and metrics design; call out bad numbers.

Staff

Shape how the organization measures and decides.

Nothing here yet.

Principal

Set measurement strategy across the company.

Nothing here yet.

Data Engineer track

Junior

Build and fix pipelines from clear specs; write correct SQL.

Core: start here

5 more junior concepts

Mid-level

Own pipelines and models end to end, including their quality.

Senior

Design the platform's storage, processing and modeling choices.

Staff

Shape how the whole organization produces and uses data.

Principal

Set data strategy and architecture across the company.

Nothing here yet.

Frontend Engineer track

Junior

Build UI that works, ship small changes safely, ask good questions.

Core: start here

6 more junior concepts

Mid-level

Own a feature end to end without hand-holding.

Core: start here

6 more mid-level concepts

Senior

Own an app's architecture, performance, and failure modes.

Staff

Shape how many teams build, across apps.

Principal

Set technical direction for the organization.

Nothing here yet.