Contents

Career & Leadership

Career Growth

Levels, promotions, interviews and building a sustainable career.

Backend Engineer track

Junior

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

Core: start here

10 more junior concepts

Mid-level

Own a feature end to end without hand-holding.

Core: start here

  • ImpactOutcomes that matter to the business, not just output.
  • OwnershipTaking responsibility for outcomes, not just tasks.
5 more mid-level concepts

Senior

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

Core: start here

  • Handling AmbiguityMaking progress when the problem isn't well defined.
  • ScopeHow big and ambiguous the problems you own are.
6 more senior concepts

Staff

Shape how many teams build, across systems.

Principal

Set technical direction for the organization.

Data Engineer track

Junior

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

Core: start here

10 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.

Frontend Engineer track

Junior

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

Core: start here

10 more junior concepts

Mid-level

Own a feature end to end without hand-holding.

Core: start here

  • ImpactOutcomes that matter to the business, not just output.
  • OwnershipTaking responsibility for outcomes, not just tasks.
5 more mid-level concepts

Senior

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

Core: start here

  • Handling AmbiguityMaking progress when the problem isn't well defined.
  • ScopeHow big and ambiguous the problems you own are.
6 more senior concepts

Staff

Shape how many teams build, across apps.

Principal

Set technical direction for the organization.