Jobs in the United States

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Added 6 mins ago
Sr. Engineer I (II)
PJM Interconnection, L.L.C.
Audubon, PA
Join our dynamic team as a Engineer, where you'll play a critical role in advancing interconnection projects within the PJM New Service Request Cycle study process. This position is your…
Added 10 mins ago
Test Engineering Technician II
Jabil Inc.
Florence, KY
· Supports the Test Engineer in the development and commission of test solutions executing the test qualification of the fixture and program as per the specific system qualification process.
Added 12 mins ago
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Software Engineer 2 - CoreAI
Microsoft
WA · Redmond, WA · Redmond
- $102,100 to $219,200 USD / year
We are looking for a Software Engineer 2 - CoreAI to join the Azure Functions Platform team. In this role, you will design, build, operate, and maintain core platform components and…
Added 12 mins ago
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Product Manager 2 - CoreAI
Microsoft
WA · Redmond, WA · Redmond
- $102,100 to $219,200 USD / year
Partner closely with engineering, design, research, and data science to align quickly, commit to decisions, and ship high-quality, fast, and stable AI-powered features inside Visual Studio.
Added 13 mins ago
J
Senior Software Development Engineer in Test (SDET)
Jobgether
Remote, United States
- $70,000 to $80,000 USD / year
We are seeking a highly skilled Senior Software Development Engineer in Test to strengthen software quality and reliability across a complex healthcare technology platform. In this role,…
Added 13 mins ago
Senior Fullstack Engineer (Matchmaking)
Jobgether
Remote, United States
…and next steps. Our partner is looking for a Senior Fullstack Engineer (Matchmaking) based in the United…
Added 14 mins ago
Staff Research Engineer/Scientist
ServiceNow
Santa Clara, CA
It all started when engineer Fred Luddy wrote code that automated a tedious task for his coworker, Phyllis. She cried tears of joy. That moment inspired Fred to build a company that could…
Added 16 mins ago
Engineering Project Manager
Cherokee Federal
Joint Base Pearl Hbr Hickam, HI
The Engineering Project Manager supports Facility Sustainment Restoration and Modernization (FSRM) projects and the MILCON program as part of our company’s on-site engineering team to…
Added 16 mins ago
Staff Software Engineer - IAM
General Motors
Honolulu, HI
We’re looking for a Security Software Engineer to join the Security Products Engineering team and drive the design and implementation of security-focused software and services across GM.…
Added 16 mins ago
Software Engineer, Systems ML
Meta
Honolulu, HI
Meta is seeking a Software Engineer to join our Systems ML Engineering team, focused on building and optimizing the machine learning infrastructure that powers Meta's products at massive…
Added 16 mins ago
Senior Software Engineer - Global Forwarding Technology
C.H. Robinson
Honolulu, HI
team which is expanding engineering capacity to support a growing portfolio of strategic modernization and automation initiatives. In this role, you will help design and deliver scalable…
Added 16 mins ago
Staff Full-stack Engineer - Shopping (Remote-eligible)
Capital One
Honolulu, HI
As a Staff Engineer at Capital One, you will be part of a community of technical experts working to define the future of banking in the cloud. You will work alongside our talented team of…
Added 16 mins ago
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Cyber Countermeasure Specialist
TEKsystems
Honolulu, HI
- $60 to $65 USD / hour
…within a highly secure environment. This role is responsible for engineering, deploying, and maintaining defensive cyber capabilities designed to detect, contain, and mitigate advanced…
Added 16 mins ago
Senior Data Engineer
Highmark Health
Honolulu, HI
…incumbent and team will be involved in every aspect of the data process, from idea generation, analysis, design, build, and support, using the latest technologies and design…
Added 16 mins ago
Frontend Engineer
GN Hearing
Honolulu, HI
In the role of Frontend Engineer in the Engineering team, you will contribute to our purpose of Bringing People Closer. You will own key web-based customer journeys from technical design…
Added 16 mins ago
ZT Engineer, Lead
BOOZ, ALLEN & HAMILTON, INC.
Honolulu, HI
This is an opportunity to work at the forefront of network engineering and cybersecurity, combining backbone networking, cloud technologies, and Zero Trust principles to support…
Added 17 mins ago
Infrastructure Engineer II
Info Image
Coppell, TX
The Infrastructure Engineer II is a senior-level role responsible for owning, optimizing, and advancing enterprise infrastructure systems. This position goes beyond day-to-day operations…
Added 18 mins ago
Principal Engineer, Applied AI & Build Standards
Best Buy
Richfield, MN
As the Principal Engineer on Best Buy’s Applied AI & Build Standards team, you will set our technical direction. You’ll decide how the platform is built and how agents earn trust, with one…
Added 19 mins ago
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Senior Software Engineer
Microsoft
United States
- $119,800 to $261,000 USD / year
As a Senior Software Engineer, you will lead the design and development of a new solution that orchestrates Virtual Machine Scale Sets across Azure regions. The solution will help…
Added 19 mins ago
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Sr. Software Engineer
Microsoft
WA · VA · GA · Redmond, WA · Reston, VA · Atlanta, GA · Redmond · Reston · Atlanta
- $119,800 to $261,000 USD / year
Promote engineering best practices: Advocate for clean code, modern development standards, and continuous improvement in engineering processes.
Added 19 mins ago
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Data Center Critical Environment Mechanical Engineer
Microsoft
IL · Chicago, IL · Chicago
- $102,100 to $219,200 USD / year
…powers our cloud services. As a CO+I Data Center Mechanical Engineer, you will perform a key role in delivering the core infrastructure and foundational technologies for Microsoft's online…
Added 19 mins ago
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Software Engineer: Intern Opportunities for University Students - CoreAI - Redmond, WA
Microsoft
WA · Redmond, WA · Redmond
- $5,690 to $12,250 USD / month
As a Software Engineering Intern on AI and ML projects, you will work with teammates to solve problems and build innovative software solutions that leverage AI technologies. You will apply…
Added 19 mins ago
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Software Engineer- CoreAI
Microsoft
WA · Redmond, WA · Redmond
- $85,400 to $183,700 USD / year
As a Software Engineer in CoreAI, you will collaborate with engineers, applied scientists, and product teams to build AI-powered developer experiences, intelligent applications, and…
Added 19 mins ago
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Solution Engineer - Microsoft Innovation Hub
Microsoft
MA · Boston, MA · Boston
- $130,900 to $272,300 USD / year
As a Solution Engineer - Microsoft Innovation Hub, working on-site in the Microsoft Innovation Hub located in Burlington, Massachusetts, you will merge business and technical requirements…
Added 20 mins ago
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Software Engineer: Internship Opportunities
Microsoft
CA · Aliso Viejo, CA · Aliso Viejo
- $5,690 to $12,250 USD / month
As a Software Engineering Intern, you will build end-to-end product experiences across user interfaces, APIs, and backend services. You will collaborate with engineers, designers, and…

Roblox

Principal Machine Learning Engineer - Matchmaking

San Mateo, CA, United States

$295,250 - $345,040 USD

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Job details

Pay: $295,250 - $345,040 USD
Experience: 8+ years of experience and a consistent record of delivering and improving large-scale ML systems for ranking, recommendation, personalization, or resource allocation.
Posting language: English
Posted: Nov 3, 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.

Matchmaking is a critical stage downstream of Discovery and Search. Once a player chooses a game to play, matchmaking assigns them to a server for that game. That decision shapes who they play with, the network latency they experience, and the quality of their session. By matching players to servers that fit their needs and each developer’s game, matchmaking helps turn discovery into satisfying play, repeat visits, and long-term engagement, making it a direct lever for Roblox’s growth.

As a Principal ML Engineer on Matchmaking, you’ll own the technical vision and execution for the models, objective functions, and algorithms that make those decisions. You’ll combine predictions of high-value player actions with optimization of player and developer utility and system efficiency, serving millions of players across hundreds of thousands of servers in global datacenters.

You Will:

Own the technical direction and ML strategy for matchmaking, connecting the Discovery and Search journey to server placements that improve player experience, developer success, and Roblox growth.
Define and evolve the matchmaking objective function to balance player and developer utility with system efficiency. Make tradeoffs among co-player compatibility, network and join latency, engagement, retention, server utilization, and compute cost explicit and measurable.
Build models that predict high-value actions and longer-term outcomes for each player–server match, including co-play, chat engagement, sustained play, and return visits, using player history, game characteristics, and live server state.
Design and productionize candidate-server retrieval, ranking, and assignment algorithms that optimize this objective under real-time latency, capacity, and reliability constraints, accounting for both the joining player and players already in the server.
Lead other engineers by example and through technical direction as an individual contributor, mentor engineers, and create an engineering culture of excellence.
Build and evolve the data, feature, training, serving, and evaluation systems that support matchmaking ML, ensuring fresh signals, reliable predictions, and consistency between training and serving.
Partner with Discovery, Search, developer-facing product teams, modelers, and data and AI infrastructure engineers to co-design models and systems that adapt to each game’s needs and deliver value across the player journey.
Define offline evaluation and lead online experiments to measure the impact of matchmaking decisions on player engagement and retention, developer success, and system efficiency, using the results to improve models and objectives.
Translate research into iterative production improvements, collaborate with the wider ML community where applicable, and represent Roblox’s technical work.

You Have:

8+ years of experience and a consistent record of delivering and improving large-scale ML systems for ranking, recommendation, personalization, or resource allocation.
Experience defining objective functions, building predictive models, and deploying optimization algorithms that balance user and business outcomes with production latency, reliability, and resource constraints.
The capability of breaking down long-term product requirements into iterative deliverable stages.
Initiated and facilitated challenging technical decisions across multiple teams and organizations. You are empathetic and find common understanding.
Deep technical expertise, you always start with the needs of the user, whether they are Roblox users or internal engineers.
A generalist approach and you have mastered several languages and technologies already; you can easily adapt to any situation.
The ability to roll up your sleeves to tackle data problems or machine learning problems when they come up.
A creative and strategic approach to solving hard problems. You simplify the complex. You bring in fresh ideas from new places.
BS in Computer Science or a related discipline, MS/PhD are a definite plus.

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

$295,250 - $345,040 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

Machine learning
ML
Grading systems
Research
Build predictive models
Product comprehension
Computer science

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