Jobs in the United States

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Added 3 mins ago
Principal Systems Engineer
Odyssey Systems Consulting Group, Ltd.
Hanscom AFB, MA
Odyssey Systems has an exciting opportunity for a Principal System Engineer providing support to the Air Force Life Cycle Management Center/ISR SOF (AFLCMC/HB). The Air Force Program…
Added 4 mins ago
Account Executive (Central)
Verint Systems, Inc.
Oklahoma City, OK
Principal Duties and Essential Responsibilities:
Added 5 mins ago
Principal Engineer - Java/AWS, Zelle
Early Warning Services, LLC
United States
Be a thought leader: a senior point of expertise on software engineering issues, industry trends and developing technologies. Be a role model to others on the team. Coach and mentor team…
Added 6 mins ago
Associate Manufacturing Engineer - Iron Mountain, MI
Hubbell Incorporated
Iron Mountain, MI
The Associate Manufacturing Engineer is responsible for supporting manufacturing processes and improving production efficiency. This position involves assisting in the development and…
Added 10 mins ago
Construction Engineer, Civil
WMATA Candidate Experience
Hyattsville, MD · MD · DC · VA
The Construction Engineer, Civil is an experienced professional specializing the planning, management, and resolution of issues associated with assigned capital construction infrastructure…
Added 14 mins ago
Principal Architect – Smart Systems & AI Innovation
Quest Global
Greenville, SC · Schenectady, NY
As Principal Architect – Smart Systems & AI Innovation, you will define and drive the architecture for next‑generation digital tools and AI copilots that empower engineers to work smarter,…
Added 22 mins ago
Senior Systems Engineer
GRVTY
Aurora, CO · Sterling, VA
We are seeking an accomplished Senior Systems Engineer to serve as a principal technical anchor across a large-scale, multi-team engineering initiative supporting mission-critical satellite…
Added 26 mins ago
Experienced principal blockchain engineer with payment and exchange building experience
Travoom
Santa Monica, CA
Extensive experience designing, deploying, and auditing secure and efficient smart contracts. The engineer should be familiar with Solidity for Ethereum or other smart contract languages…
Added 27 mins ago
Sr Platform Engineer
Mayo Clinic
Rochester, MN
Under the direction of the Director – Platform Technology and the Principal Platform Integration Engineer, this team member will support the direct execution and delivery of all technical…
Added 32 mins ago
Reliability Engineer
PACCAR
Denton, TX
…information technology, and distributes truck parts related to its principal…
Added 43 mins ago
Test Engineer / Principal Test Engineer
Northrop Grumman
Roy, UT
Northrop Grumman Strategic Deterrent Systems division is seeking a Test Engineer / Principal Test Engineer to join our team of highly qualified and diverse individuals. This position will…
Added 43 mins ago
Sentinel - Mechanical Engineer L2/L3
Northrop Grumman
Roy, UT
Northrop Grumman Defense Systems is seeking a Mechanical Engineer or Principal Mechanical Engineer to join our team. This position will be located at Roy, UT to support the Sentinel (GBSD)…
Added 43 mins ago
Principal / Senior Principal Electrical Test Engineer
Northrop Grumman
Roy, UT
Northrop Grumman Strategic Deterrent Systems division in Roy, UT is seeking a Principal Electrical Systems Test Engineer / Senior Principal Electrical Systems Test Engineer to join our team…
Added 43 mins ago
Sentinel Sr Principal Software Engineer
Northrop Grumman
Roy, UT
Senior Principal Software Engineer: 8 Years with Bachelor’s in related field of study, 6 Years with Masters, 4 Years with PhD or 04 additional years in lieu of a degree.
Added 43 mins ago
Senior Principal Systems Test Engineer
Northrop Grumman
Roy, UT
Northrop Grumman Strategic Deterrent Systems division is seeking a Senior Principal Test Engineer to join our team of highly qualified and diverse individuals. This position will be located…
Added 46 mins ago
Senior Principal Embedded Software Engineer
The MITRE Corporation
Bedford, MA
MITRE’s Electronic Systems Development department seeks a senior technical leader in embedded and high-performance software to support its existing government sponsor portfolio, providing…
Added 55 mins ago
R
Sales Engineer
Rain
New York, NY
- $175,000 to $200,000 USD / year
…wallets, and cross-border rails. As both a Visa and Mastercard Principal Member, Rain issues cards that work at more than 175 million merchant locations in over 220 countries and…
Added 1 hour ago
Client Director, Cloud & Strategic AI
Arista Networks
San Jose, CA
…management, DCI, and optics. You can hold your own with a customer's principal network…
Added 1 hour ago
Consultant, Software Engineer
Nationwide Life and Annuity Insurance Co
AZ
Software Engineer needed to design and develop business services and APIs using Java, Spring, and Oracle. Develop REST and SOAP based APIs using JAX-WS and API Management tools. Perform…
Added 1 hour ago
Software Test Engineer I
MED Medtronic Inc
Mounds View, MN · Newton, MA
Medtronic is seeking a motivated and detail-oriented Software Test Engineer to join our Affera Mapping and Ablation System team. This role is essential in supporting the testing and quality…
Added 1 hour ago
Research & Development Engineer I - Onsite
SLD Medtronic Sofamor Danek USA, Inc.
Memphis, TN
As an R&D Engineer I, you will develop spinal implants, instruments, and systems while collaborating with cross-functional teams and customers throughout the new product development…
Added 1 hour ago
Software Engineer II
MED Medtronic Inc
Mounds View, MN
As a Software Engineer II you will be part of our Device Embedded Systems team responsible for designing, developing and verifying embedded software applications used in implantable cardiac…
Added 1 hour ago
A
Senior Scientist II / Principal Research Scientist I - Analytical R&D
AbbVie
North Chicago, IL
- $124,500 to $236,500 USD / year
For the Principal Research Scientist I position, we are seeking a highly motivated and experienced data scientist to provide scientific and technical leadership for analytical data science,…
Added 1 hour ago
Flight Software Engineer - Level 3 or 4 (Active Secret) - AHT
Northrop Grumman
Redondo Beach, CA
Northrop Grumman’s Space Sector is seeking a Principal/Sr. Principal Flight Software Engineer - Level 3 or 4 (Active Secret) to join our team of highly qualified, diverse professionals…
Added 1 hour ago
Principal Embedded Software Engineer - Radar, Onsite
RTX Corporation
el segundo, CA
Raytheon Space and Air division in El Segundo, CA is seeking a Principal Embedded Software Engineer to be part of their product development teams.

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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