Machine Learning Engineer, Vector Core Modeling (Entry-Level / New Grad)

We are looking for a Machine Learning Engineer to join our Vector Core Modeling team. In this role, you will design and build scalable machine learning systems that power ad ranking in large-scale advertising platforms.

As a member of the Vector AI (https://unity.com/products/unity-ads/vector) group, you will play a role in driving Unity's ads engine. You will work with massive datasets and rich signals to develop the state-of-the-art ads models. These models serve 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 you'll be doing

• Design, implement, and optimize the core ads models
• Build and enhance multi-objective ranking systems balancing retention, monetization, diversity, and user 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

• Bachelor's Degree in Computer Science, Machine Learning, or a related field
• Solid foundation in machine learning through research or projects
• Familiarity with Python and/or ML frameworks (e.g., PyTorch, TensorFlow)
• Interest in building state-of-the-art ads models to solve difficult problems

You might also have

• Experience in the ads domain or with recommender systems
• Experience leveraging AI tools (such as Claude Code, GitHub Copilot, and Cursor) to accelerate development, 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.

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

Unity [NYSE: U] is the world's 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 www.unity.com. 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 (https://docs.google.com/forms/d/e/1FAIpQLSdrbRLG1N-apH1eahQ622Gypo-rmiAB6LLTP1UsSWQNu7omxQ/viewform) to let us know.