Uber L5B Loop

Company GuideStaffStaff Software Engineer · Last checked Nov 2026

L5B carries the Staff title, and design and the bar raiser weigh most on it. The bar raiser deep dive should cover a project of at least two to three quarters that spanned several teams, and evidence at senior scope tends to land at L5A.

The Rounds

Screens

Recruiter CallCovers the scope of your recent work, the teams it touched, and the target band. · 30 minPractice Recruiter Call
Technical Phone ScreenCoding in CodeSignal, often with discussion of systems you have designed. · 60 minPractice Technical Phone Screen

Onsite

CodingOne or two rounds, including a depth-in-specialization round for your domain. · 60 minPractice Coding
System DesignUsually two rounds, with large-scale architecture, failure modes, and tradeoffs across services. · 60 minPractice System Design
Collaboration and LeadershipWith the hiring manager: aligning several teams on one design and answering for the outcome.Practice Collaboration and Leadership
Bar RaiserA deep dive into a multi-quarter project you led, covering complexity, decisions, timeline, and failures. · 60 minPractice Bar Raiser

What the L5B Loop Weighs

Design rounds that each show staff depth on scale, reliability, and long-term cost.
A deep-dive project that no single team could have finished alone.
How you aligned teams on a design and handled disagreement.
Honest accounts of what failed and what you changed because of it.

Sources

Last checked Nov 2026. Loops vary by team and change over time, so confirm the details with your recruiter.