Jobs in the United States

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Added 9 mins ago
Transmission & Structural Department Leader
Verdantas
Lakewood, CO
…sustainable engineering through our use of cutting-edge modeling and digital technology and our genuine commitment to people. Our work spans high-growth sectors like water resources,…
Added 9 mins ago
Sales Engineer, Industry Workflow
Trimble Inc.
Westminster, CO
Added 9 mins ago
Manager, AECO Resource Management
Trimble Inc.
Westminster, CO
…About Us: Trimble is empowering stakeholders through planning, design, construction and the entire asset lifecycle. The company's innovative and connected ecosystem of solutions improves…
Added 9 mins ago
AI Security Engineer
Trimble Inc.
Westminster, CO
Protect Enterprise Innovation as Our Next AI Security Engineer! Are you ready to lead the defense of cutting-edge artificial intelligence systems across a global technology leader? Join our…
Added 9 mins ago
Data Engineer - Customer Insights & Analytics
Trimble Inc.
Westminster, CO
Added 9 mins ago
Engineering Project/Program Manager
Trimble Inc.
Boulder, CO
Empower Machine Automation and Precision: Shape the Future as our Next Proactive Quality Engineer! Ready to make a tangible impact on global construction and mining industries using…
Added 9 mins ago
Electronics Engineer III, Avionics Testing
Lockheed Martin
Littleton, CO
Join us as an Electronics Engineer and become a member of the US Navy's Fleet Ballistic Missile (FBM) D5 Life Extension 2 (D5LE2) Avionics team.
Added 9 mins ago
Electronics Engineer III, Avionics Testing
Lockheed Martin
Littleton, CO
Join us as an Electronics Engineer and become a member of the US Navy's Fleet Ballistic Missile (FBM) D5 Life Extension 2 (D5LE2) Avionics team.
Added 9 mins ago
Orbital Warfare Test Range Engineer
The Aerospace Corpor
Colorado Springs, CO
…Space Force Space Systems Command (SSC) in the conception, design, acquisition, launch and operations of satellite, launch vehicle, ground control, and range systems. In the Digital and…
Added 10 mins ago
Associate Software Engineer
Highmark Health
Denver, CO
This job is an integral member of an agile software engineer team responsible for building scalable software applications across all digital channels to serve our customers. Responsible for…
Added 10 mins ago
Senior Lead Engineer
PwC
Denver, CO
As a Senior Lead Engineer you will lead custom application development and testing efforts that help clients turn business needs into scalable software solutions across cloud-native and…
Added 10 mins ago
Lead Engineer
PwC
Denver, CO
As a Lead Engineer you will guide the design, build, testing, and modernization of custom applications across cloud-native and on-premise environments, using modern engineering approaches,…
Added 16 mins ago
CP
Lead Site Reliability Engineer (Blockchain)
Cielo Projects
New York, NY
- $165,000 to $210,000 USD / year
…blockchain-powered financial infrastructure, to hire a Lead Site Reliability Engineer (Blockchain) that will be based in NYCMidtown…
Added 17 mins ago
Vice President, Demand Generation (ALT: Revenue Marketing)
Backbase
Atlanta, GA
You are an expert funnel engineer who can design connected, multi-stage GTM flywheels out of disconnected content and traffic sources.
Added 26 mins ago
EC
Quality Systems Engineer, Programmatic
Eaton Corporation
Omaha, NE
- $86,000 to $126,000 USD / year
The Quality Systems Engineer is responsible for developing, implementing, and maintaining quality standards, programmatic processes, and performance measurement systems across programmatic…
Added 34 mins ago
G
Bridge Design Engineer
GPAC
Boston, MA
- $85,000 to $120,000 USD / year
As a Bridge Design Engineer, you’ll move beyond drafting drawings to become a pivotal contributor to the structural integrity and safety of critical infrastructure. You’ll own technical…
Added 39 mins ago
RF Digital Circuit Engineer
SAIC
Crane, IN
SAIC is seeking an experienced RF and Digital Circuit Engineer to support the design, development, integration, testing, troubleshooting, and sustainment of complex electronic systems in…
Added 57 mins ago
CP
Lead Site Reliability Engineer (Blockchain)
Cielo Projects
New York, NY
- $165,000 to $210,000 USD / year
We're partnering with Quant, a global leader in programmable money and blockchain-powered financial infrastructure, to hire a Lead Site Reliability Engineer (Blockchain).
Added 57 mins ago
Autonomous Systems Project Engineer- Launched Effects
Integration Innovation, Inc. (i3)
Huntsville, AL
i3 is searching for an Autonomous Systems Project Engineer to serves as the technical innovator and engineering lead driving the development, integration, and flight-testing of…
Added 57 mins ago
Mechanical Design Engineer
Leidos
Huntsville, AL
…Business Area, currently has an opportunity for a Mechanical Design Engineer to work at our Huntsville, AL campus providing support to a variety of design and integration programs related…
Added 57 mins ago
RF Communications Engineer
Leidos
Huntsville, AL
The Lead RF Communications Engineer will support the Leidos Space Platforms Portfolio in the development of a lunar terrain vehicle system and support equipment, primarily responsible for…
Added 57 mins ago
IFPC Principal Mechanical Engineer
Leidos
Huntsville, AL
Leidos’ Defense Systems is seeking a talented Principal Mechanical Engineer to support the Indirect Fire Protection Capability (IFPC Inc 2) Program. In this role, you will help develop the…
Added 1 hour ago
CADD Manager/Senior Designer
Atlas
Plymouth Meeting, PA · PA
3. A minimum of 5-years digital design (Civil 3D) and 5 years digital delivery (model data management) experience.
Added 1 hour ago
Senior Transportation Project Manager, Illinois PE/SE
Atlas
Chicago, IL
Manage transportation and roadway projects from planning through design and delivery
Added 1 hour ago
Roadway Engineer 1
Atlas
Sandersville, GA · Sparta, GA · Milledgeville, GA · Wrightsville, GA · Wrens, GA · Louisville, GA · Dublin, GA · Macon, GA · Augusta, GA · Madison, GA
Develops basic Roadway Engineering design components for assigned client projects based on the client's needs as they relate to the planning, execution, and delivery of transportation plans…

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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