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Added 2 mins ago
Lead Director - Network and Data Center Engineering
CVS Health
Pierre, SD
The Lead Director, AI Network & Data Center Engineering is responsible for leading the strategy, design, and delivery of the organization’s network infrastructure supporting enterprise…
Added 2 mins ago
Principal Product Manager
Indeed
Sioux Falls, SD
…In this role, you will align senior partners across design, engineering, analytics, AI Platform, back-end, and go-to-market teams around a unified product vision; identify the…
Added 2 mins ago
AT
Senior Business Systems Analyst
Akamai Technologies, Inc.
Pierre, SD
- $88,900 to $160,100 USD / year
Join our Network Statistics Engineering Team!
Added 2 mins ago
Senior Financial Planning & Analysis Manager
Cornerstone OnDemand
Sioux Falls, SD
Support software capitalization analysis with Accounting and track engineering efficiency metrics (e.g., R&D as a percent of revenue, cost per engineer)
Added 2 mins ago
Network Development Manager
Meta
Pierre, SD
Support the identification and evaluation of new fiber routes and capacity solutions, partnering with Network Planning and engineering teams to gather requirements and assess feasibility of…
Added 2 mins ago
NOC Technician I
Bluepeak
Sioux Falls, SD
Overview of the Position Responsibilities: The NOC Technician I monitors the Bluepeak Provider Network and Services for outages and impairments in a 24 x 7 environment. They coordinate…
Added 2 mins ago
Network and Systems Engineer III – IT Solutions Implementor
Amentum
Pierre, SD
Amentum seeks a Network and Systems Engineer III – IT Solutions Implementor to provide IT solutions and support (remotely), for Amentum programs and projects worldwide. This is a…
Added 2 mins ago
EG
Senior Director of Finance
Eliassen Group
Pierre, SD
- $85 to $95 USD / hour
…forecasting, and performance management across Digital, Product, Engineering, and Technology. The role will provide end-to-end financial leadership for a complex portfolio spanning SaaS,…
Added 13 mins ago
Lead Director - Network and Data Center Engineering
CVS Health
Cheyenne, WY
The Lead Director, AI Network & Data Center Engineering is responsible for leading the strategy, design, and delivery of the organization’s network infrastructure supporting enterprise…
Added 13 mins ago
Principal Product Manager
Indeed
Cheyenne, WY
…In this role, you will align senior partners across design, engineering, analytics, AI Platform, back-end, and go-to-market teams around a unified product vision; identify the…
Added 13 mins ago
AT
Senior Business Systems Analyst
Akamai Technologies, Inc.
Cheyenne, WY
- $88,900 to $160,100 USD / year
Join our Network Statistics Engineering Team!
Added 13 mins ago
Network and Systems Engineer III – IT Solutions Implementor
Amentum
Cheyenne, WY
Amentum seeks a Network and Systems Engineer III – IT Solutions Implementor to provide IT solutions and support (remotely), for Amentum programs and projects worldwide. This is a…
Added 13 mins ago
Senior Financial Planning & Analysis Manager
Cornerstone OnDemand
Cheyenne, WY
Support software capitalization analysis with Accounting and track engineering efficiency metrics (e.g., R&D as a percent of revenue, cost per engineer)
Added 13 mins ago
Network Development Manager
Meta
Cheyenne, WY
Support the identification and evaluation of new fiber routes and capacity solutions, partnering with Network Planning and engineering teams to gather requirements and assess feasibility of…
Added 13 mins ago
EG
Senior Director of Finance
Eliassen Group
Cheyenne, WY
- $85 to $95 USD / hour
…forecasting, and performance management across Digital, Product, Engineering, and Technology. The role will provide end-to-end financial leadership for a complex portfolio spanning SaaS,…
Added 18 mins ago
Industrial Design Engineer, GES NA Ops Engineering
Amazon.com Services LLC
Nashville, TN
Global Engineering Services (GES) Operations Engineering (Ops Eng) is searching for an innovative and solutions-oriented engineering project leader to lead initiative of developing and…
Added 18 mins ago
Marketing Manager - Strategy, Planning and Operations
Cisco
Austin, TX
…processes, increase operational efficiency, enhance reporting, or support program and project management…
Added 26 mins ago
U
Sr Telecomm Analyst - Full Time
UHS
TEMECULA, CA
- Full-time
Creating Health and Harmony, Southwest Healthcare is a comprehensive network of care with convenient hospital and ambulatory care/outpatient locations here to serve the Southern California…
Added 26 mins ago
U
Sr Telecomm Analyst - Full Time
UHS
TEMECULA, CA
- Full-time
Creating Health and Harmony, Southwest Healthcare is a comprehensive network of care with convenient hospital and ambulatory care/outpatient locations here to serve the Southern California…
Added 29 mins ago
CO
2027 S/W Embedded Engineering Intern – Sykesville MD
CORP-Corporate Office
United States
- $20.5 to $45.5 USD / hour
An internship at Northrop Grumman is unique. Sure, you’ll learn new skills, explore our enterprise, network with experts, connect with thought leaders, and finish with a resume that opens…
Added 29 mins ago
2027 Associate H/W Electronics Engineer – Sykesville MD
CORP-Corporate Office
United States
Develop or troubleshoot electrical designs using common engineering/office tools (including MatLab, LT Spice, MS Office) for analytical techniques and electrical simulation
Added 30 mins ago
EG
Senior Director of Finance
Eliassen Group
Helena, MT
- $85 to $95 USD / hour
…forecasting, and performance management across Digital, Product, Engineering, and Technology. The role will provide end-to-end financial leadership for a complex portfolio spanning SaaS,…
Added 31 mins ago
Senior Product Designer
FanDuel
Atlanta, GA
…closely with Product, UX Research, Analytics, Content Design, Engineering and other partners on a daily basis. This is a highly visible role that will be key to helping us deliver…
Added 33 mins ago
TC
IT Operations Manager
The Community Group
Lawrence, MA
- $105,000 to $125,000 USD / year
The IT support team serves staff across TCG's Business Office, education and childcare programs, out-of-school time sites, Community Day Charter Public School, Child Care Circuit Resource…
Added 39 mins ago
Outside Plant Engineer
MCI Communications Srvs LLC 151
Alpharetta, GA
…vendors to oversee OSP/ISP construction and maintenance of network extension projects to deliver fiber to new and existing customers. Your vital role will ensure that these…

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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