Jobs in the United States

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Added 1 min ago
SS
Cyber Architect and Integration Lead (SDIN)
Stellar Solutions
Colorado Springs, CO
- $31,533 USD / year
We bring talented, energetic, and immediately productive professionals to meet critical customer needs in systems engineering and integration, mission operations, program management, and…
Added 1 min ago
TA
Flight Dynamics Engineer/Senior Flight Dynamics Engineer
The Aerospace Corpor
Colorado Springs, CO
- $129,000 to $249,600 USD / year
Developing Concepts of Operations (CONOPS), exploring Tactics, Techniques, and Procedures (TTPs), andincorporating operationalconstraintsinto the design and maturation of space systems
Added 2 mins ago
Principal Engineer, Model Performance
Runware
Remote, United States
Deep, current, hands-on CUDA and GPU architecture expertise: kernel design, memory hierarchy and occupancy, Tensor Cores, fused kernels, CUDA Graphs, NCCL, and the profilers (Nsight Systems…
Added 4 mins ago
Electrical Engineer - Power Distribution
CEL - Critical Power
Williamsburg, VA
The Electrical Engineer - Power Distribution is accountable for the design, documentation and compliance of electrical systems across CEL's LV switchgear product range, including:
Added 4 mins ago
Engineer I
Victaulic Company
Easton, PA
Engineer 1- Project Design Engineer – Coupling Technology
Added 8 mins ago
Software Engineer
CoreLogic Solutions, LLC
Dallas, TX
Design, develop, test, deploy, and maintain scalable software applications following established engineering standards, coding best practices, and architectural guidelines under general…
Added 11 mins ago
Civil Structural Engineer
GPAC
Norcross, GA
…collaborative engineering team where you'll contribute to the design of commercial, industrial, institutional, and public infrastructure projects. You'll work alongside experienced…
Added 11 mins ago
Civil Structural Engineer
GPAC
Chicago, IL
…collaborative engineering team where you'll contribute to the design of commercial, industrial, institutional, and public infrastructure projects. You'll work alongside experienced…
Added 12 mins ago
Manufacturing Engineer
GPAC
Arkadelphia, AR
Participate in concurrent evaluation and quality assurance design reviews
Added 12 mins ago
Manufacturing Engineer
GPAC
Little Rock, AR
Participate in concurrent evaluation and quality assurance design reviews
Added 15 mins ago
Software Engineer
CoreLogic Solutions, LLC
Dallas, TX
Design, develop, test, deploy, and maintain scalable software applications following established engineering standards, coding best practices, and architectural guidelines under general…
Added 15 mins ago
Manufacturing Engineer
GPAC
Mountain Home, AR
Participate in concurrent evaluation and quality assurance design reviews
Added 15 mins ago
Manufacturing Engineer
GPAC
Harrison, AR
Participate in concurrent evaluation and quality assurance design reviews
Added 15 mins ago
Manufacturing Engineer
GPAC
Hot Springs, AR
Participate in concurrent evaluation and quality assurance design reviews
Added 15 mins ago
Manufacturing Engineer
GPAC
Fort Smith, AR
Participate in concurrent evaluation and quality assurance design reviews
Added 15 mins ago
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Electrical Design Engineer
GPAC
Magnolia, AR
- $80,000 to $110,000 USD / year
Product Development: Design and develop electrical schematics, control systems, wiring harnesses, and printed circuit board (PCB) layouts.
Added 15 mins ago
Manufacturing Engineer
GPAC
El Dorado, AR
Participate in concurrent evaluation and quality assurance design reviews
Added 18 mins ago
DevOps Engineer
Cascade Dafo Inc
Ferndale, WA
…support infrastructure, operations, and project work. The DevOps Engineer supports production systems and may occasionally require planned after-hours deployment or maintenance…
Added 19 mins ago
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Quality Engineer
GPAC
Waterbury, CT
- $85,000 to $125,000 USD / year
Apply quality engineering initiatives from concept through production to ensure robust design, efficient processes, and consistent product performance. Ensure product and process quality by…
Added 19 mins ago
G
Quality Engineer
GPAC
Torrington, CT
- $85,000 to $125,000 USD / year
Apply quality engineering initiatives from concept through production to ensure robust design, efficient processes, and consistent product performance. Ensure product and process quality by…
Added 20 mins ago
G
Quality Engineer
GPAC
Bristol, CT
- $85,000 to $125,000 USD / year
Apply quality engineering initiatives from concept through production to ensure robust design, efficient processes, and consistent product performance. Ensure product and process quality by…
Added 20 mins ago
G
Quality Engineer
GPAC
Naugatuck, CT
- $85,000 to $125,000 USD / year
Apply quality engineering initiatives from concept through production to ensure robust design, efficient processes, and consistent product performance. Ensure product and process quality by…
Added 20 mins ago
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Quality Engineer
GPAC
Hartford, CT
- $85,000 to $125,000 USD / year
Apply quality engineering initiatives from concept through production to ensure robust design, efficient processes, and consistent product performance. Ensure product and process quality by…
Added 21 mins ago
Staff Process Engineer, Drive Unit (3rd Shift)
Rivian
Normal, IL
Added 25 mins ago
Structural Engineer
Rockstar
Irvine, CA
Engineer for constructability and cost efficiency. Evaluate framing systems, foundations, materials, and structural approaches that reduce unnecessary cost and complexity without…

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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