Senior Machine Learning Engineer, Conversion Modeling

The opportunity

We are looking for a Senior Machine Learning Engineer to join our Ads Conversion Modeling this role you will design and build scalable machine learning systems that power ad ranking and conversion prediction across large-scale advertising platforms.

As a key member of the Vector AI group you will play a central role in driving Unitys monetization engine. You will work with massive datasets and rich signals to develop the state-of-the-art conversion rate prediction model. This model serves as the core intelligence behind delivering the right ad to the right user at the right time maximizing both user experience and advertiser outcomes.

What youll be doing

• Design implement and optimize the CVR prediction model
• Build and enhance multi-objective ranking systems balancing retention monetization diversity and long-term value
• Solve cold-start problems for new users new games and new creatives
• Conduct offline evaluations and online A/B experiments to deliver measurable impact
• Partner closely with product infrastructure and monetization teams
• Continuously improve model quality serving latency and system scalability

What were looking for

• Hands-on experience applying state-of-the-art machine learning and deep learning models to complex real-world problems
• Strong software engineering skills in Python and experience with deep learning frameworks preferably PyTorch
• Solid understanding of metric design experimentation frameworks and large-scale data analysis
• Proven ability to lead projects end-to-end and deliver measurable business impact

You might also have

• Experience working with large datasets and distributed computing frameworks
• Experience building CVR systems content understanding or behavior modeling systems
• Experience embracing AI as a strategic advantage in engineering following established best practices for code quality and security

Additional information

• International relocation support is not available for this position

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

Unity NYSE: U is the worlds leading game engine powering play for more than 3 billion consumers each month. The top mobile games in the world the most played PC indie titles the most innovative console games and virtually all of the top XR and Web Games are developed deployed and grown in Unity. Unity also enables teams across industries like automotive manufacturing and healthcare to design simulate and collaborate in 3D closing the gap between ideas and reality. For more information please visit .

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.

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