Principal Model Optimization Engineer

Home > Javascript/Typescript programming jobs

Principal Model Optimization Engineer in USA new

Roblox
Full time
Email

USA
10/25/2026
Report

San Mateo, CA

Responsibilities

Design platform capabilities adopted by multiple ML teams and use cases.
Build GPU and compute management systems covering quotas, priority tiers, preemption, multi-cluster scheduling, and capacity planning.
Define, instrument, and improve metrics such as training startup time, job success rate, GPU utilization, and training or inference cost.
Investigate slow or failing jobs across pipelines, schedulers, GPU profiles, and hardware errors, and implement durable fixes.
Collaborate with ML engineers and data scientists to improve platform usability and developer workflows.
Partner with Infrastructure, Data Platform, and Security on storage, networking, data access, and compliance foundations.
Lead design reviews and technical proposals, contribute code, and mentor senior engineers.

Requirements

6+ years of professional experience building performant systems.
Track record of building ML infrastructure end to end, such as training pipelines, workflow orchestration, data or feature pipelines, experiment tracking, model registries, or model serving.
Experience designing widely adopted SDKs, APIs, or developer tools.
Hands-on experience running GPU workloads at scale on Kubernetes, including scheduling, quotas, multi-cluster dispatch, autoscaling, and debugging GPU and node failures.
Depth in training and inference performance, including distributed training, mixed precision, batching, and quantization.
Experience defining success metrics, iterating on shipped systems, and improving measurable outcomes.
Experience leading cross-team technical work without direct authority and communicating clearly with engineers and leaders.
Bachelor’s degree in Computer Science, Computer Engineering, or a related field, or equivalent experience.

Benefits

Full-time employees are eligible for equity compensation and company benefits.
Office-based roles are onsite Tuesday, Wednesday, and Thursday, with optional presence Monday and Friday.
The listed annual base salary range applies to roles based at Roblox headquarters in San Mateo, California.

Salary: $295k - $345k/yr

Roblox

Roblox's vision is to reimagine the way people come together. Our mission is to connect a billion people with optimism and civility. What is Roblox? Roblox is a platform where people come together virtually to share experiences. Every day, tens of millions of people from around the world come to ...

Similar positions

Senior Platform Engineer

Clera
Full time

Others
10/26/2026

Munich, Germany

Senior Software Engineer - Full Stack

Bankjoy
Full time

Canada
10/25/2026
Salary: Competitive

Remote

Staff Software Engineer, Site Reliability

Ironclad
Full time

USA
10/25/2026
Salary: $210k - $235k/yr

San Francisco, CA

Senior Product Engineer

Clera
Full time

Others
10/25/2026

Munich, Germany

Backend Engineer

Clera
Full time

Others
10/25/2026

Berlin, Germany