Jobs in the United States

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Added 8 mins ago
Lead Planning & Optimization Advisor/Engineer
Marathon Petroleum Corporation
St Paul Park, MN
The Value Chain Optimization (VCO) team has an opening for a Cross-Regional Planning & Optimization Advisor/Engineer. The Cross-Regional Planning & Optimization Advisor/Engineer plays a…
Added 9 mins ago
GA
Sr Staff Applications Operations Engineer – Engineering Tools Automation & AI Ops
GE Aerospace
Minnetonka, MN
- $131,000 to $174,000 USD / year
Drive consistent incident, problem, and change management across pods; lead resolution of high-severity escalations and root cause analysis.
Added 9 mins ago
Lead DevSecOps Engineer
Leidos
Eagan, MN
Leidos is seeking a Lead DevSecOps Engineer to join the Air Traffic Business Area within the Homeland Sector, supporting the development of the Leidos Common Automation Platform (L-CAP).…
Added 9 mins ago
LI
Civil Engineer in Training
LHB Inc
Duluth, MN
- $67,000 to $74,000 USD / year
LHB has an immediate opportunity for a Civil Engineer in Training to join our team. You will support the civil site design process across multiple markets including renewables, power…
Added 9 mins ago
Software Engineer, Machine Learning RecSys
Meta
Saint Paul, MN
Software Engineer, Machine Learning RecSys Responsibilities:
Added 9 mins ago
OT Security Platform Engineer – Dragos
Cognizant
Saint Paul, MN
We are seeking an experienced OT Security Platform Engineer / Technical Lead to own and operate the Dragos security monitoring platform across a global manufacturing environment. This is a…
Added 9 mins ago
DevOps Engineer III
Deloitte
Minneapolis, MN
Designing, implementing, and supporting DevOps pipelines, infrastructure automation, and continuous integration and continuous deployment practices across client environments
Added 9 mins ago
Civil Engineer - Design Lead (Urban Design/Municipal)
SRF Consulting Group
Minneapolis, MN
We are currently seeking a Civil Engineer - Design Lead (Urban Design/Municipal) to join our growing Urban Mobility & Infrastructure group in our Minneapolis, MN, St. Paul, MN or Chicago,…
Added 9 mins ago
Principal Infrastructure Engineer - Public Cloud Storage
Wells Fargo
MINNEAPOLIS, MN
Wells Fargo is seeking a Storage Engineer in the Public Cloud Storage space to lead the design, engineering, automation, and adoption of cloud-based storage services with a primary focus on…
Added 9 mins ago
Lead AI and Data Science Engineer II- Marketing Measurement
Deloitte
Minneapolis, MN
…wants to work in a collaborative environment? As an experienced Lead AI and Data Science Engineer II - Marketing Measurement, you will have the opportunity to share new ideas and…
Added 9 mins ago
EG
Cloud Engineer
Eliassen Group
Saint Paul, MN
- $70 to $88 USD / hour
Our client seeks a senior Cloud Engineer to own and stabilize a legacy GCP and Azure footprint while assisting with conversions and decommissioning. The role will support automation efforts…
Added 33 mins ago
H
Security Software Engineer
HIFI
New York City, NY
- $150,000 to $215,000 USD / year
As a Security Engineer at HIFI you will help own the security of our company and the infrastructure behind our payments products day to day. You'll build HIFI's security program from the…
Added 34 mins ago
Ecosystem Growth Leader
Acxiom
Jefferson City, MO
Acxiom is seeking a Leader of Ecosystem Partnerships to lead and scale our strategic ecosystem technology partnerships into durable, high-growth revenue channels. This leader will own the…
Added 41 mins ago
Sr. Interdisciplinary Systems Engineer / Architect, AWS Bespoke Solutions
Amazon Development Center U.S., Inc.
Jessup, MD
The Bespoke Solutions group in AWS Region Services is looking for a Interdisciplinary Systems Engineer with technical leadership experience leading hardware, software, and FGPA developers…
Added 1 hour ago
G
Transportation Project Engineer (PE)
GPAC
Detroit, MI
- $95,000 to $125,000 USD / year
Job title: Transportation Project Engineer (PE)
Added 1 hour ago
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Transportation Project Engineer (PE)
GPAC
Grand Rapids, MI
- $95,000 to $125,000 USD / year
Job title: Transportation Project Engineer (PE)
Added 1 hour ago
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Transportation Project Engineer (PE)
GPAC
Charlotte, NC
- $95,000 to $125,000 USD / year
Job title: Transportation Project Engineer (PE)
Added 1 hour ago
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Water/Wastewater Project Engineer (PE)
GPAC
Charlotte, NC
- $95,000 to $125,000 USD / year
Job title: Water/Wastewater Project Engineer (PE)
Added 1 hour ago
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Transportation Project Engineer (PE)
GPAC
Albany, NY
- $95,000 to $125,000 USD / year
Job title: Transportation Project Engineer (PE)
Added 1 hour ago
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Transportation Project Engineer (PE)
GPAC
Rochester, NY
- $95,000 to $125,000 USD / year
Job title: Transportation Project Engineer (PE)
Added 1 hour ago
G
Water/Wastewater Project Engineer (PE)
GPAC
Rochester, NY
- $95,000 to $125,000 USD / year
Job title: Water/Wastewater Project Engineer (PE)
Added 1 hour ago
G
Transportation Project Engineer (PE)
GPAC
Greenville, SC
- $95,000 to $125,000 USD / year
Job title: Transportation Project Engineer (PE)
Added 1 hour ago
EG
Cloud Engineer
Eliassen Group
Indianapolis, IN
- $70 to $88 USD / hour
Our client seeks a senior Cloud Engineer to own and stabilize a legacy GCP and Azure footprint while assisting with conversions and decommissioning. The role will support automation efforts…
Added 1 hour ago
EG
Cloud Engineer
Eliassen Group
Juneau, AK
- $70 to $88 USD / hour
Our client seeks a senior Cloud Engineer to own and stabilize a legacy GCP and Azure footprint while assisting with conversions and decommissioning. The role will support automation efforts…
Added 2 hours ago
UE
Substation Lead Electrical Engineer
Ulteig Engineers, In
Greenwood Village, CO
- $123,200 to $159,650 USD / year
Ulteig is seeking qualified candidates for the position of Lead Substation Electrical Engineer to support Renewables/Utility/Power projects. The Lead Electrical Engineer acts as a technical…

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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