Principal Fullstack/Backend Software Engineer, User Connections

San Mateo, CAFull-time$295k2026-10-08 → 2026-11-11

HybridNo visa sponsorship

Core

Define backend systems for the social ecosystem (Friending, Profiles, Identity) powering millions of daily users on Roblox.

Role type

Principal Software Engineer (Team Lead)

Builds

Scalable backend services for user connections, profiles, and social engagement features.

Domain

Social networking / Gaming platform

Deliverable

production ML models | product features

Required skills

Large-scale distributed systems design, Server-side architecture, Compiled languages (C#, Java, C++)

Preferred skills

Social product experience

Technologies

C#, Java, C++

Responsibilities

Tech lead the engineering team, Lead design of scalable backend systems, Enforce high quality standards, Mentor engineers, Collaborate on platform features

Seniority

Principal, hands-on IC with team leadership

About Roblox

Roblox provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. Roblox also provides reasonable accommodations to candidates with qualifying disabilities or religious beliefs during the recruiting process.