Build the default avatar abilities that define how every player moves and fights across Roblox's platform

Roblox's newly forming Avatar Default Abilities team is hiring a senior engineer with deep runtime character-animation experience to design and ship default abilities (movement, combat, interactions) in C++ and Lua/Python, reusable across millions of experiences and device tiers. Expect rigorous questions on real-time animation pipelines, performance optimization across device tiers, and composable systems design.

Practice this interview

Free · a live voice mock calibrated to this exact role

Start the mock interview

What this interview tests

Real-time character/avatar animation pipelines
C++ and Lua/Python for performance-sensitive systems
Cross-device performance optimization (mobile to console)
Data-driven, reusable ability architecture at massive scale
Taking features from prototype through production rollout
Mentoring and setting precedent on a new team

Common question themes

Architect a data-driven default ability system reusable across millions of experiences

Describe a runtime animation pipeline you built or shipped and its key technical challenges

Profiling and optimizing a character/animation system across low-end mobile to high-end console

Taking an ability/feature from prototype to production rollout and iteration

Designing composable systems on top of an existing avatar/ability manager

Establishing architecture, testing, and documentation standards for a newly forming team

How candidates describe it

Real Senior Software Engineer - Avatar Defaults interview stories — retold from candidates' public write-ups, with sources.

Bloomberg · Senior Software EngineerOffer

Bloomberg Senior Software Engineer Interview: Five Rounds, Offer

A Senior Software Engineer candidate applied to Bloomberg's London office through the company's careers site and, after an initial screen, went through five separate on-site conversations covering coding, system design, a recruiter chat, and a hiring-manager round, ultimately accepting an offer.

Interviewed October 2022 · London, United Kingdom

Google · L3 Software EngineerOffer

Google L3 software engineer interview: phone screen, four coding rounds, and the Googleyness round

A candidate with two years of experience went from recruiter outreach to offer over about four months. The onsite was four 45-minute coding rounds — three of them featuring binary trees — and one round turned into a 25-minute chain of follow-ups about approximating an optimal solution at scale.

Interviewed June 2020 · Bangalore, IN

Google · L4 Software EngineerNo offer

Google L4 Software Engineer Interview: Eight Rounds, No Offer

An L4 Software Engineer candidate went through two phone screens, three onsite rounds, a culture conversation, and a team-matching call with a Google hiring manager, then watched the process stall for about a month and a half over a tightened experience requirement before an added extended round ended without an offer.

Interviewed February 2024 · Not specified

View the original posting

All Roblox Senior Software Engineer interviews

All Roblox interviews