Jobs in the United States

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Added just now
Project Manager
GPAC
Riverside, CA
Licensed Architect, Licensed Landscape Architect, or Licensed Civil Engineer
Added 1 min ago
Civil Project Engineer
GPAC
Riverside, CA
Our client, a reputable and growing multi-disciplinary design firm in Riverside, CA, is seeking a senior Civil Project Engineer. This individual will serve as the senior licensed…
Added 1 min ago
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Water Resource Engineer
GPAC
Indianapolis, IN
- $90,000 to $150,000 USD / year
…multi-disciplinary engineering firm that is looking for a Water Resources Engineer who wants to take on meaningful projects, work alongside experienced industry professionals, and build a…
Added 2 mins ago
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Quality Engineer
GPAC
Mishawaka, IN
- $80,000 to $100,000 USD / year
gpac is partnered with a growing international pet food manufacturer seeking a Quality Engineer – Raw Materials to support raw material quality, supplier performance, and laboratory…
Added 2 mins ago
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Quality Engineer
GPAC
Mishawaka, IN
- $80,000 to $100,000 USD / year
gpac is partnered with a growing international pet food manufacturer seeking a Quality Engineer – Raw Materials to support raw material quality, supplier performance, and laboratory…
Added 3 mins ago
Propulsion Engineer II - Materials and Processes - Additive Manufacturing
Blue Origin LLC
Seattle, WA
Added 8 mins ago
Civil Site / Land Development Engineer
GPAC
Nashville, TN
Our client, a reputable and growing organization in Nashville, Tennessee, is seeking a Civil Site / Land Development Engineer. This individual will support site and land development civil…
Added 13 mins ago
Solution Consultant / Solution Engineer - Retail Enterprise Software
DemandTec
Remote, United States
Added 20 mins ago
Project Manager
GPAC
Milwaukee, WI
Facilitate owner, architect, engineer, and subcontractor communications
Added 20 mins ago
KS
Associate Sales Representative
Kastle Systems
Falls Church, VA
- $36 to $38 USD / hour
…that the most effective approach is a complete one: because we engineer, install, monitor, and maintain your system, we are invested in its end-to-end performance. Learn more about who we…
Added 22 mins ago
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Project Engineer
GPAC
Kansas City, KS
- $90,000 to $130,000 USD / year
The Project Engineer is responsible for assisting on mechanical construction projects from preconstruction through closeout. This role requires strong leadership, financial oversight,…
Added 22 mins ago
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Project Engineer
GPAC
Olathe, KS
- $90,000 to $130,000 USD / year
The Project Engineer is responsible for assisting on mechanical construction projects from preconstruction through closeout. This role requires strong leadership, financial oversight,…
Added 23 mins ago
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Project Engineer - Commercial GC
GPAC
San Mateo, CA
- $140,000 USD / year
An established commercial general contractor in the Bay Area is hiring a Project Engineer to support its project teams. This is a direct-hire role with a clear path to APM and PM.
Added 23 mins ago
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Project Engineer - Commercial GC
GPAC
Santa Clara, CA
- $140,000 USD / year
An established commercial general contractor in the Bay Area is hiring a Project Engineer to support its project teams. This is a direct-hire role with a clear path to APM and PM.
Added 23 mins ago
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Project Engineer - Commercial GC
GPAC
Hayward, CA
- $140,000 USD / year
An established commercial general contractor in the Bay Area is hiring a Project Engineer to support its project teams. This is a direct-hire role with a clear path to APM and PM.
Added 23 mins ago
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Project Engineer - Commercial GC
GPAC
Concord, CA
- $140,000 USD / year
An established commercial general contractor in the Bay Area is hiring a Project Engineer to support its project teams. This is a direct-hire role with a clear path to APM and PM.
Added 23 mins ago
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Manufacturing Engineer
GPAC
Gainesville, GA
- $80,000 to $100,000 USD / year
We are seeking a motivated Manufacturing Engineer to support site operations and drive continuous improvement initiatives within a manufacturing environment. This individual will work…
Added 23 mins ago
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Manufacturing Engineer
GPAC
Torrington, CT
- $80,000 to $100,000 USD / year
We are seeking a motivated Manufacturing Engineer to support site operations and drive continuous improvement initiatives within a manufacturing environment. This individual will work…
Added 24 mins ago
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Electrical Design Engineer
GPAC
Myrtle Beach, SC
- $90,000 to $125,000 USD / year
Added 24 mins ago
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Electrical Design Engineer
GPAC
Spartanburg, SC
- $90,000 to $125,000 USD / year
Added 25 mins ago
Controls Electrical Engineer
GPAC
Berea, SC
We are seeking a motivated and experienced Controls Electrical Engineer to join our team. The ideal candidate will have a strong background in manufacturing, electrical engineering, and…
Added 25 mins ago
Controls Electrical Engineer
GPAC
Greer, SC
We are seeking a motivated and experienced Controls Electrical Engineer to join our team. The ideal candidate will have a strong background in manufacturing, electrical engineering, and…
Added 25 mins ago
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Manufacturing Manager
GPAC
Westford, MA
- $100,000 to $125,000 USD / year
We are seeking a motivated Manufacturing Engineer Manager to support site operations and drive continuous improvement initiatives within a manufacturing environment. This individual will…
Added 25 mins ago
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Manufacturing Engineer
GPAC
Rochester, NY
- $80,000 to $100,000 USD / year
We are seeking a motivated Manufacturing Engineer to support site operations and drive continuous improvement initiatives within a manufacturing environment. This individual will work…
Added 32 mins ago
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Associate Director, Corporate Strategy
Sarepta Therapeutics, Inc.
Cambridge, MA
- $160,800 to $201,000 USD / year
Sarepta is on an urgent mission: engineer precision genetic medicine for rare diseases that devastate lives and cut futures short. We hold a leadership position in Duchenne Muscular…

Roblox

Principal Software Engineer, Build Platform

San Mateo, CA, United States

$345,040 - $399,420 USD

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Job details

Pay: $345,040 - $399,420 USD
Experience: 8+ years of experience building and operating large-scale distributed systems, including technical leadership across multiple teams.
Posting language: English
Posted: Nov 4, 2026

Original job description

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators.

At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there.

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.

As a Principal Software Engineer on the Build Platform team, you will set the technical direction for the infrastructure behind AI-powered creation on Roblox. Build lets anyone make a game by describing it, on mobile and in Studio. Our team owns the platform underneath: the cloud-hosted agent harness, tools and skills, and evaluation framework. You'll be the senior technical leader shaping its architecture.

This role spans the full agent stack: orchestrating long-running, multi-step workflows; model integration and routing across providers; tool and skill execution; sandboxed game environments; evals at scale; and the reliability, safety, and cost systems that let us grow to millions of creators.

You Have:

8+ years of experience building and operating large-scale distributed systems, including technical leadership across multiple teams.
Deep experience designing backend platforms used by other engineering teams.
Hands-on experience with production AI/ML systems, such as model serving, orchestration, LLM integration, or agentic execution loops (planning, tool use, recovery, long-running workflows).
A strong understanding of tool and skill design and structured evaluation for AI systems.
The judgment to weigh tradeoffs and make pragmatic calls under ambiguity.
A BS in Computer Science or a related field, or equivalent professional experience.

You Are:

Excited to define how AI agents create at scale, and to stay hands-on while doing it.
A clear communicator who can explain complex technical direction to engineers, product, and leadership.
Experienced with workflow engines (e.g., Temporal), multi-provider model routing, or AI cost management (bonus).

You Will:

Own the technical architecture and long-term roadmap for the Build agent platform.
Design for reliability, safety, observability, and cost efficiency in production AI workloads, including usage metering and model-routing strategy.
Define how we measure agent quality and build the evaluation infrastructure that drives model, prompt, and skill decisions.
Partner with Build product teams, ML infrastructure, and Safety to ship new capabilities quickly and safely.
Raise the engineering bar through design reviews, mentorship, and hands-on technical leadership.

For roles that are based at our headquarters in San Mateo, CA: The starting base pay for this position is as shown below. The actual base pay is dependent upon a variety of job-related factors such as professional background, training, work experience, location, business needs and market demand. Therefore, in some circumstances, the actual salary could fall outside of this expected range. This pay range is subject to change and may be modified in the future. All full-time employees are also eligible for equity compensation and for benefits as described on this page.

Annual Salary Range

$345,040 - $399,420 USD

Roles that are based in an office are onsite Tuesday, Wednesday, and Thursday, with optional presence on Monday and Friday (unless otherwise noted).

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.

For US based roles only, please note the Company may not be able to employ candidates for this role who have United States work authorization related to certain U.S. visa categories, or support future H-1B sponsorship at this time.

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More about this job

Skills

Leadership
ML
Computer science
Workflow
Cost management

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