Senior Machine Learning Engineer, Conversion Modeling

The opportunity

At Unity were committed to building a culture that fosters collaboration and innovation. Within our fast-paced environment were tackling complex challenges that drive meaningful impact for creators and users across our ecosystem.

Our Vector team plays a central role in this effort by developing state-of-the-art conversion rate (CVR) prediction and market price models that power our ad ranking and recommendation systems. These models help advertisers reach the right users at the right time by accurately estimating engagement and conversion likelihood. By leveraging large-scale behavioral data creative features and contextual signals we continuously improve the relevance and accuracy of our predictions. This drives key outcomes such as higher user engagement stronger conversion performance and better return on ad spend enabling advertisers to achieve their goals while delivering a better experience for users.

We are seeking a highly skilled Senior ML Engineer to drive state-of-the-art bidding optimization systems that enable efficient budget pacing goal-aligned automated strategies continual improvement through experimentation and sustainable growth for Unity Ads.

What youll be doing

• Design implement and maintain high-performance CTR and CVR prediction models that power ad ranking and recommendation systems.
• Build and refine systems for creative understanding and user behavior modeling enabling more accurate and context-aware engagement predictions.
• Ensure model quality and reliability by continuously monitoring performance calibrating predictions and addressing data drift or delayed feedback.
• Actively participate and work with other leads to set the long term direction for the team plan and oversee engineering designs and project execution.
• Effectively communicate complex technical concepts to non-engineering stakeholders.

What were looking for

You might also have

Additional information

Benefits

At Unity we want our team members to thrive. We offer a wide range of benefits designed to support well-being and work-life balance.

Please note : Benefits eligibility specific offerings and coverage vary based on the country and employment status.

While specific benefits vary here are some of the ways we strive to take care of our eligible team members globally : Comprehensive health life and disability insurance Commute subsidy Employee stock ownership Competitive retirement / pension plans Generous vacation and personal days Support for new parents through leave and family-care programs Office food snacks Mental Health and Wellbeing programs and support Employee Resource Groups Global Employee Assistance Program Training and development programs Volunteering and donation matching program

Life at Unity

We offer a wide range of benefits designed to support employees well-being and work-life balance. You can read more about them on our career page.

Unity NYSE : U is the leading platform to create and grow games and interactive experiences. Creators ranging from game developers to artists architects automotive designers infrastructure experts filmmakers and more use Unity to bring their imaginations to life across multiple platforms from mobile PC and console to spatial computing.

As of the third quarter of 2024 more than 70% of the top 1000 mobile games were made with Unity and in 2024 Made with Unity applications had an average of 3.7 billion downloads per month. For more information please visit Unity.

Unity is a proud equal opportunity employer. We are committed to fostering an inclusive innovative environment and celebrate our employees across age race color ancestry national origin religion disability sex gender identity or expression sexual orientation or any other protected status in accordance with applicable law. Our differences are strengths that enable us to support the growing and evolving needs of our customers partners and collaborators. If you have a disability that means there are preparations or accommodations we can make to help ensure you have a comfortable and positive interview experience please fill out this form to let us know.

Pursuant to the San Francisco Fair Chance Ordinance we will consider for employment qualified applicants with arrest and conviction records.

This position requires the incumbent to have a sufficient knowledge of English to have professional verbal and written exchanges in this language since the performance of the duties related to this position requires frequent and regular communication with colleagues and partners located worldwide and whose common language is English.

Headhunters and recruitment agencies may not submit resumes / CVs through this Web site or directly to managers. Unity does not accept unsolicited headhunter and agency resumes. Unity will not pay fees to any third-party agency or company that does not have a signed agreement with Unity.

Your privacy is important to us. Please take a moment to review our Prospect Privacy Policy and Applicant Privacy Policy. Should you have any concerns about your privacy please contact us at

#SEN #LI-AR1

Required Experience :

Senior IC

Key Skills

Industrial Maintenance,Machining,Mechanical Knowledge,CNC,Precision Measuring Instruments,Schematics,Maintenance,Hydraulics,Plastics Injection Molding,Programmable Logic Controllers,Manufacturing,Troubleshooting

Employment Type : Full Time

Experience : years

Vacancy : 1