Jobs in the United States

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Added 1 min ago
Database Administrator
SpaceX
Hawthorne, CA
Partner with internal customers to understand current challenges, plan/communicate improvements and anticipate future needs.
Added 3 mins ago
MS
Principal Software Engineer - Digital Media - Dallas, TX
Military Spouse Jobs & VetJobs
United States
- $120,000 to $180,000 USD / year
ATTENTION MILITARY AFFILIATED JOB SEEKERS - Our organization works with partner companies to source qualified talent for their open roles. The following position is available to Veterans,…
Added 4 mins ago
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DevOps Engineer
Inspire11
Chicago, IL · 1 N Dearborn St. Chicago, IL
- Up to $10,000 USD / month
Design, develop, implement and support complex critical applications
Added 4 mins ago
CNC Tooling Sales and Application Engineer
Kennametal, Inc.
North West Houston, TX
…managing customer relationship, providing technical direction/support, and increasing productivity for our customers. This role combines technical knowledge and sales skills to achieve…
Added 5 mins ago
Senior Tech Delivery Lead Open Text
Sysco Payroll, Division of Sysco Resources Services, LLC
United States
Support senior leadership and finance business partner on IT business case creation.
Added 5 mins ago
Lead Software Development Engineer in Test (SDET)
TCC Toyota Motor Credit Corporation Company
Plano, TX
We are seeking a Lead Software Development Engineer in Test (SDET) to join our team as an individual contributor. In this role, you will design, build, and maintain scalable test automation…
Added 6 mins ago
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Senior Transportation Hydraulics Engineer
AECOM
Raleigh, NC
- $135,000 to $165,000 USD / year
AECOM is seeking an experienced Senior Transportation Hydraulics Engineer to join our Transportation team in Raleigh, NC. This position will provide technical leadership and engineering…
Added 6 mins ago
Applications Engineer II
Fenner Precision Polymers
Lititz, PA
Provide full range of technical support to the sales teams, distributors and customers.
Added 6 mins ago
Sr. Presales Networking Systems Engineer (Long Island, NY)
Hewlett Packard Enterprise
All, NY · Long Island City, NY
We are seeking a senior level Networking Systems Engineer to support K-12 and local governments throughout Long Island, New York. This is a remote, territory-based position. Candidates must…
Added 6 mins ago
Civil Lead Engineer
Bechtel
Houston, TX
…ship-loading facilities, and flare systems; and associated utility support infrastructure. SPL5 will perform this work predominantly on a direct hire basis with support from only a few…
Added 6 mins ago
Sr. HVAC Engineer
Bechtel
Knoxville, TN
In this position, the engineer will support design development of HVAC and mechanical systems by preparing studies, mechanical drawings, calculations, material requisitions, engineering…
Added 6 mins ago
PD&P Layout Designer
Bechtel
San Juan, AR
…partnering with industry, government, suppliers, and communities to support our customers and projects. We’re bringing global expertise to develop local talent, strengthen regional…
Added 6 mins ago
PD&P Piping Designer
Bechtel
San Juan, AR
…partnering with industry, government, suppliers, and communities to support our customers and projects. We’re bringing global expertise to develop local talent, strengthen regional…
Added 6 mins ago
Project Rigging Engineer
Bechtel
Port Arthur, TX
The Rigging Engineer is based to Bechtel Equipment Operations, Inc. reports to the Lead Rigging Engineer and provides operational and technical support to Bechtel rigging superintendents,…
Added 6 mins ago
Structural Field Engineer
Bechtel
New Albany, OH
The Structural Field Engineer reports to the Area Field Engineer and provides technical assistance, direction, and support to field supervision for the construction and installation of…
Added 6 mins ago
Piping Field Engineer - Testing
Bechtel
New Albany, OH
Support the Lead Pipe Testing Field Engineer in maintaining and improving the project pipe testing program in accordance with SWPP 4MP-T81-03506, Pressure Testing of Piping, Tubing and…
Added 7 mins ago
Senior Specialist, Mechanical Engineer (Mechanisms)
L3Harris Technologies
Carlsbad, CA · Chantilly, VA · Palm Bay, FL
Job Title: Sr. Specialist, Mechanical Engineer (Mechanisms)
Added 9 mins ago
ID&C Enterprise Project Engineer
BNH
Arnold AFB, TN
As the ID&C Enterprise Project Engineer, you will serve as the strategic bridge between engineering execution and project management. In this vital advisory role, you will partner directly…
Added 10 mins ago
Principal, Cybersecurity Automation - Remote
Stryker
Remote, United States
The Principal Security Automation & AI Engineer is the senior technical leader responsible for automation and AI across Cyber Defense. This role designs, builds, and operates scalable…
Added 11 mins ago
Electrical Engineer - Level 2
SP - Synoptics
United States
SYNOPTICS is seeking an experienced Electrical Engineer to support facilities engineering and manufacturing operations, with a focus on power distribution, control logic, and equipment…
Added 11 mins ago
Electrical Engineering Design Manager
Salas O'Brien
Nashville, TN
Job Summary: The idea candidate to fill this position is an Electrical Engineer that is a working technical leader responsible for the quality, consistency, and timely delivery of…
Added 11 mins ago
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Enterprise Technology Costing Architect
HP
Spring, TX
- $174,050 to $278,450 USD / year
Ensure architectural support for required data quality, traceability, reconciliation and auditability.
Added 12 mins ago
Electrical Engineer II - Projects
Freeport McMoRan
Safford, AZ
Provide technical expertise and guidance for assigned electrical engineering projects. Partner with senior engineering leadership to develop and implement innovative electrical engineering…
Added 13 mins ago
Lead Quality Engineer
VEGA Americas
Mason, OH
The Lead Quality Engineer serves as the primary technical leader for the Quality Engineering team, providing coaching, guidance, and quality oversight across product development,…
Added 13 mins ago
Senior Mechanical Engineer
Actalent
Norwood, MA
Partner with manufacturing, supply chain, marketing, and service teams to develop specifications and resolve design tradeoffs.

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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