# Principal Machine Learning Engineer - Matchmaking at Roblox

- Company: Roblox
- What the company does: Roblox is a global platform where millions of people gather together every day to imagine, create, and share experiences with each other in immersive, user-generated 3D worlds. Backed by First Round.
- Company website: https://hbr.org/2022/03/the-ceo-of-roblox-on-scaling-community-sourced-innovation
- Type: Startups (AI role)
- Level: Principal and up
- Location: San Mateo, CA, United States
- Work setup: On-site
- Posted: 2026-11-03
- Apply by: 2026-12-18
- Apply: https://careers.roblox.com/jobs/8257625?gh_jid=8257625&utm_source=1752vc&utm_medium=careers
- Page: https://www.1752.vc/careers/jobs/roblox-principal-machine-learning-engineer-matchmaking/

## About the role

A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. Found on 1752vc Careers, the job board for startup and VC roles.

## What they're looking for

- 8+ years of experience and a consistent record of delivering and improving large-scale ML systems for ranking, recommendation, personalization, or resource allocation
- Experience defining objective functions, building predictive models, and deploying optimization algorithms that balance user and business outcomes with production latency, reliability, and resource constraints
- The capability of breaking down long-term product requirements into iterative deliverable stages
- Initiated and facilitated challenging technical decisions across multiple teams and organizations. You are empathetic and find common understanding
- Deep technical expertise, you always start with the needs of the user, whether they are Roblox users or internal engineers
- A generalist approach and you have mastered several languages and technologies already, you can easily adapt to any situation

Tags: Machine Learning

Source: 1752vc Careers, https://www.1752.vc/careers/jobs/roblox-principal-machine-learning-engineer-matchmaking/