Jobs in the United States

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Added 1 min ago
A
Project Engineer
AbbVie
North Chicago, IL
- $109,500 to $208,500 USD / year
…related to a specific technical field or discipline. A Project Engineer has full knowledge of other related disciplines beyond their own area of…
Added 1 min ago
Senior Product Manager, UAS Development
Firestorm
United States
Make the readiness call. Decide when each release is ready for a customer from a product standpoint. Program management owns the delivery schedule and execution.
Added 1 min ago
Test Engineer II
Textron
Wilmington, MA
We are seeking a motivated engineer with a Mechanical or Test Engineering background to support strategic weapon system development for our Advanced Programs team. As a Test Engineer, you…
Added 1 min ago
Test Engineer II
Textron
Hill AFB, UT
We are seeking a motivated engineer with a Mechanical or Test Engineering background to support strategic weapon system development for our Advanced Programs team. As a Test Engineer, you…
Added 1 min ago
Test Engineer II
Textron
Hunt Valley, MD
We are seeking a motivated engineer with a Mechanical or Test Engineering background to support strategic weapon system development for our Advanced Programs team. As a Test Engineer, you…
Added 1 min ago
Project Engineer
Satterfield & Pontikes
Houston, TX
Due to growth we're looking to add a Project Engineer to the team! In this role you'll builds on your existing experience by taking greater ownership for managing technical documentation,…
Added 1 min ago
FIeld Engineer
Satterfield & Pontikes
Houston, TX
Due to growth, we're looking to add a Field Engineer to our team! In this role you'll build on your experience by taking greater ownership of field coordination tasks, technical…
Added 2 mins ago
SS
Project Manager - MET
Sibanye Stillwater
Columbus, MT
- From $134,800 USD / year
…into clearly defined scopes, plans, budgets, schedules, and execution strategies; coordinates Operations, Maintenance, Engineering, Supply Chain, Finance, contractors, and regulatory…
Added 2 mins ago
ELECTRONICS ENGINEER
U.S. Air Force - Agency Wide
Kirtland AFB, NM
…Evaluation: Performs professional electronics engineering work in support of the evaluation, integration, and sustainment of instrumentation and control systems. - PCB Implementation and…
Added 2 mins ago
RF Electrical Engineer (R&D Engineer 1/2)
Los Alamos National Laboratory
Los Alamos, NM
Q-6 is offering an opportunity to join the Detonation Science and Technology Group as an early-level R&D Engineer. You will work with a diverse team of engineers, technologists, and…
Added 2 mins ago
LANSCE Water Systems Lead R&D Engineer 2/3
Los Alamos National Laboratory
Los Alamos, NM
As an R&D Engineer 2 you will lead a team of technicians responsible for the operation and maintenance of the cooling water systems of all components along the LANSCE linear particle…
Added 2 mins ago
Nuclear Facilities Engineer 2/3 (Mechanical Project Engineer)
Los Alamos National Laboratory
Los Alamos, NM
The Construction Readiness Office (CRO) is seeking a highly motivated and experienced Mechanical Nuclear Facilities Engineer (NFE 2/3) to support mission-critical infrastructure,…
Added 2 mins ago
Systems R&D Engineer 2/3
Los Alamos National Laboratory
Los Alamos, NM
Q-20 is seeking a Systems Engineer to support the development, management, and implementation of requirements across complex engineering programs. This position will work closely with…
Added 2 mins ago
R&D Engineer 2/3
Los Alamos National Laboratory
Los Alamos, NM
This position will be filled at either the R&D Engineer 2 level or the R&D Engineer 3 level, depending on the skills of the selected candidate. Additional job responsibilities (outlined…
Added 2 mins ago
Cleared Space Systems Mechanical Engineer, Onsite
Sandia National Laboratories
Albuquerque, NM
We are seeking a mechanical or systems engineer with space systems experience to support a broad portfolio of critical high-security projects. The portfolio consists of a mix of analysis,…
Added 2 mins ago
C
Senior QA Automation Engineer - Playwright & Selenium
Cognizant
Santa Fe, NM
- $50,000 to $92,500 USD / year
As a Senior QA Automation Engineer - Playwright & Selenium , you will play a key role in validating enterprise applications by developing and executing comprehensive test strategies across…
Added 3 mins ago
Lead Systems Engineer
Trinzic
Albuquerque, NM
Provide support to the government team in the development, implementation, and control of all contractual and financial aspects of Division programs, to include planning management,…
Added 3 mins ago
Staff Supplier Quality Engineer - ISO 13485 Lead Auditor - Remote from USA (50% Travel Internationally)
Intuitive
Remote, United States
The Staff Supplier Quality Engineer operates with a high degree of independence to determine methodologies, audit frameworks, quality systems, and procedural controls across the global…
Added 4 mins ago
Mission Systems Department Head (FACULTY)
The Pennsylvania State University
United States
…(ARL) at Penn State. The SERP Division provides full spectrum support for the research, development, rapid prototyping, manufacturing, fielding, and testing of complex systems that support…
Added 4 mins ago
Maintenance Engineer - Electrical
Chemours
Parkersburg, WV
Support high quality, efficient field execution of electrical Maintenance work
Added 6 mins ago
Process Engineer I, Drug Product
Fujifilm
Holly Springs, NC
The Process Engineer 1 will provide engineering guidance to support capital projects, technology transfer, and manufacturing operations. This will ensure compliance with all safety,…
Added 7 mins ago
Quality Engineer / Supplier Quality Engineer
ATSC IES INC
Gilbert, AZ
Advanced Technology Systems Company (ATSC) in Gilbert, AZ is seeking a Quality Engineer / Supplier Quality Engineer to join our growing team. Reporting to the Quality Manager, this is a…
Added 8 mins ago
Engineer- Controls II USA
LED FastStart
New Iberia, LA
Responsible for global support of manufacturing facilities.
Added 8 mins ago
Quality Engineer I
Availity
Remote, United States
The Quality Assurance Engineer I is responsible for continuously improving the quality of the company’s product line by preventing, quickly detecting, and validating product and process…
Added 9 mins ago
Senior Network Engineer
K2 Services LLC
Remote, United States
…technology solutions, document processing and administrative support, marketing and communications, billing and AP/AR services, records and information governance, workflow automation,…

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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Skills

Leadership
ML
Computer science
Workflow
Cost management

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