Jobs in the United States

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Added 1 min ago
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Senior Software Engineer - Minecraft
Microsoft
WA · Redmond, WA · Redmond
- $119,800 to $261,000 USD / year
The Mojang Player Operations team is looking for a Senior Software Engineer to help drive innovation in Trust and Safety. Our team is accountable for ensuring our players have a world-class…
Added 2 mins ago
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Senior Researcher/Engineer: AI for Biomolecular Modelling and Simulation
Microsoft
United States
- $119,800 to $261,000 USD / year
We invite you to join us on this mission. We are seeking Senior Researcher/Engineer with backgrounds in Machine Learning, Computational Chemistry, Physics or Biology. You will be working in…
Added 2 mins ago
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Software Engineer 2
Microsoft
WA · CA · NY · Redmond, WA · Mountain View, CA · Redmond · Mountain View · New York
- $102,100 to $219,200 USD / year
…video, and multimodal content. We are looking for a Software Engineer 2 - Responsible AI who is passionate about building customer-facing AI services with scalable and sustainable…
Added 2 mins ago
Software Engineer, Systems ML
Meta
Augusta, ME
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 2 mins ago
Staff Full-stack Engineer - Shopping (Remote-eligible)
Capital One
Augusta, ME
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 2 mins ago
Data Scientist 1
Baylor Scott & White Health
Augusta, ME
Applied Data Science and Experimentation | 20% : Apply statistical analysis, machine learning, natural
Added 20 mins ago
Senior Machine Learning (ML) Engineer (CCC Casualty / Claims Intelligence)
EvolutionIQ
Remote, United States
As a Senior Machine Learning Engineer, you'll own models and evaluations end to end within a problem area and turn the results into product decisions. You'll join a new engineering group at…
Added 21 mins ago
PN
Research Engineer II - Building Energy Analysis
Pacific Northwest National Laboratory
UNAVAILABLE · Richland, WA · Seattle, WA · Portland, OR
- $89,300 USD / year
This position is in the Building Simulation and Design Group (BS&DG) within PNNL’s Electricity Infrastructure and Buildings Division. BS&DG conducts modeling and analysis to evaluate the…
Added 25 mins ago
Network Engineer, Deployment & Support
Meta
Papillion, NE
Network Engineer, Deployment & Support Responsibilities:
Added 25 mins ago
Software Engineer, Systems ML
Meta
Lincoln, NE
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 25 mins ago
Staff Full-stack Engineer - Shopping (Remote-eligible)
Capital One
Lincoln, NE
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 25 mins ago
Data Scientist 1
Baylor Scott & White Health
Lincoln, NE
Applied Data Science and Experimentation | 20% : Apply statistical analysis, machine learning, natural
Added 25 mins ago
Hardware Engineer, PCB Layout
Meta
Lincoln, NE
Meta is seeking a Staff PCB Layout Engineer to drive the design and delivery of complex printed circuit boards for large-scale infrastructure hardware. In this role, you will define layout…
Added 25 mins ago
PN
Research Engineer II - Building Energy Analysis
Pacific Northwest National Laboratory
Lincoln, NE
- $89,300 USD / year
This position is in the Building Simulation and Design Group (BS&DG) within PNNL’s Electricity Infrastructure and Buildings Division. BS&DG conducts modeling and analysis to evaluate the…
Added 25 mins ago
Supply Chain Capacity Engineer
Meta
Lincoln, NE
Meta is seeking a Planning & Capacity Engineer to join the Infrastructure Supply Chain and Engineering (ISCE) Planning team to focus on planning optimization for all of Meta’s…
Added 40 mins ago
Senior AI Engineer – Claude & Databricks
Techstra Solutions
Pittsburgh, PA
Design and develop data pipelines supporting AI, analytics, and machine learning workloads.
Added 40 mins ago
Mid-Level Databricks Engineer
Techstra Solutions
Pittsburgh, PA
We are seeking a Mid-Level Databricks Engineer to design, develop, and support scalable data solutions using Databricks and modern cloud data platforms. This role will focus on building…
Added 40 mins ago
Senior Databricks Engineer
Techstra Solutions
Pittsburgh, PA
We are seeking a Senior Databricks Engineer / Technical Lead with 10+ years of experience in data engineering, data warehousing, and ETL/ELT, including significant hands-on experience…
Added 40 mins ago
Machine Learning Engineer Senior
Techstra Solutions
Dallas, TX
Leads in the development of cross-functional, multi-platform machine learning software systems. Uses technical knowledge and industry experience to design, build and maintain technology…
Added 43 mins ago
PN
Research Engineer II - Building Energy Analysis
Pacific Northwest National Laboratory
Jackson, MS
- $89,300 USD / year
This position is in the Building Simulation and Design Group (BS&DG) within PNNL’s Electricity Infrastructure and Buildings Division. BS&DG conducts modeling and analysis to evaluate the…
Added 1 hour ago
Senior Electrical Engineer
Onto Innovation Inc-US
United States
Onto Innovation is seeking a Senior Electrical Engineer to design, integrate, troubleshoot, and support electrical systems for advanced semiconductor inspection and metrology products. This…
Added 1 hour ago
Computer Vision Software Engineer
BOOZ ALLEN HAMILTON INC
Dayton, OH
Job Number: R0246213 Computer Vision Software Engineer The Opportunity: As a software developer, you know that good software is more than a nice-looking interface and data. You need the…
Added 1 hour ago
NS
Electrical Engineer Intern (Spring 2027)
Nucor Steel Auburn, Inc.
Cincinnati, OH
- $26.5 to $27.5 USD / hour
Utilize Rockwell Software to design, upgrade, or convert existing Programmable Logic Controller (PLC) and Human-Machine Interface (HMI) programs.
Added 1 hour ago
Forward Deployed Engineer
CGI Technologies and Solutions, Inc.
Lafayette, LA
We CGI looking for Forward Deployed Engineer. With your expertise, you will work with a high performing team to consult and develop solutions for a major client.
Added 1 hour ago
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Controls Engineer
Oishii
Phillipsburg, NJ
- $75,000 to $90,000 USD / year
As part of our Engineering team, a Controls Engineer will be involved with the design, commissioning, ramp-up, and operations of our indoor vertical smart farms and will support Facilities…

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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