Senior Machine Learning Engineer

LE140 Unity Technologies Canada Company; Montreal (administrative region); On-site; CAD 120,000 - 180,000; Full time

Benefits offered by this job

Comprehensive health, life, and loss/3

Employee stock ownership

Competitive retirement/pension plans

Generous vacation and personal days

Parental leave programs

Mental health and wellbeing programs

Office snacks

Global Employee Assistance Program

Training and development

Volunteer and donation matching

Job summary

Unity Technologies Canada is seeking a Senior Machine Learning Engineer to lead the development of foundational AI systems inside the Unity engine. You will enable creators to build smarter, autonomous in-game agents and more reactive simulations.

The role emphasizes reinforcement learning, decision making, and agent memory with production-grade ML in a real-time engine. Collaboration across teams and a path to shaping the roadmap are key aspects.

Qualifications

• Advanced degree in CS/ML/Robotics or equivalent experience.
• 5+ years of hands-on ML system development in production.
• Strong background in RL, planning or multi-agent systems.

Responsibilities

• Design, implement, and scale AI agent systems within Unity environments enabling goal-directed behavior and environment-aware decision-making.
• Develop reusable agentic frameworks and memory systems for creators to extend in projects.
• Develop ML models for the Unity agentic system and integrate them within real-time engine constraints.

Skills

Reinforcement learning

AI planning

Decision making under uncertainty

Multi-agent systems

Real-time ML

Education

MS or PhD in CS/ML/Robotics

Tools

Unity engine

Job description

’opportunité Chez Unity, nous façonnons l’avenir du développement 3D en temps réel en permettant aux créateurs d’exploiter des systèmes intelligents et autonomes. Notre IA agentique de nouvelle génération (orientée vers des objectifs, adaptative, et capable de raisonner et de planifier dans des environnements dynamiques) transforme la manière dont les jeux et les simulations prennent vie. Nous recherchons un(e) Ingénieur(e) Machine Learning Senior pour diriger le développement de ces systèmes d’IA fondamentaux au sein du moteur Unity, donnant aux créateurs les moyens de construire des agents en jeu et des simulations plus intelligents et plus réactifs. Votre travail stimulera directement l’innovation, permettant aux développeurs et aux designers d’intégrer de manière fluide des comportements d’IA sophistiqués dans leurs mondes. Ce poste est parfait pour quelqu’un de passionné par le fait de repousser les limites de l’IA, des systèmes multi‑agents, de l’apprentissage par renforcement et de la prise de décision intelligente dans des environnements complexes et en temps réel.

The opportunity At Unity, we’re shaping the future of real‑time 3D development by enabling creators to harness intelligent, autonomous systems. Our next‑generation agentic AI – goal‑directed, adaptive, and capable of reasoning and planning in dynamic environments – is transforming how games and simulations come to life. We’re looking for a Senior Machine Learning Engineer to lead the development of these foundational AI systems within the Unity engine, empowering creators to build smarter, more responsive in‑game agents and simulations.

What you’ll be doing

• Design, implement, and scale AI agent systems in Unity environments that enable goal‑directed behaviour, task planning and execution, and environment‑aware decision‑making.
• Develop reusable agentic frameworks – such as planning modules, memory systems or policy adaptation layers – that creators can extend in their own projects.
• Develop AI models for the Unity AI agentic system. The AI models perform various tasks for building Unity games.
• Integrate Machine Learning models seamlessly within real‑time game engine constraints, optimizing for latency, compute, and determinism.
• Lead high‑impact initiatives, including hierarchical reinforcement learning for scalable behaviours, AI planning and goal inference frameworks for NPCs and simulations, and agent memory and world modelling systems for persistent, believable behaviour.
• Collaborate across internal and external teams to unlock innovative use cases in gaming, simulation, and interactive storytelling.
• Contribute to the long‑term vision and roadmap for Unity’s agentic AI offerings, ensuring modularity, usability, and performance across platforms.
• Establish and champion best practices for model quality, simulation‑based evaluation, and ML/AI safety within real‑time systems.
• Mentor engineers and researchers while cultivating a technical culture of innovation, excellence, and collaboration.

What we’re looking for

• Advanced degree (MS or Ph.D.) in Computer Science, Machine Learning, Robotics, or a related field—or equivalent practical experience.
• 5+ years of hands‑on experience developing ML systems in production, ideally within real‑time or interactive environments.
• Strong background in one or more of the following: reinforcement learning, fine‑tuning, decision‑making under uncertainty, AI planning, or multi‑agent systems.

Cette fourchette correspond au salaire de base prévu pour ce poste. En plus du salaire de base, ce poste peut donner droit à des attributions d’actions et à une participation à nos programmes d’incitation de l’entreprise, comme des primes annuelles discrétionnaires ou des commissions de vente.

This range reflects the anticipated base salary for this position. Beyond base salary, this role may be eligible for equity awards and participation in our company incentive plans (such as annual discretionary bonuses or sales commissions). The final offer amount will depend on several factors, including geographic location and the candidate’s relevant experience, professional background, and skill set.

Avantages

• assurance santé, vie et invalidité complète
• Subvention pour les déplacements
• Participation des employés à l’actionnariat
• Régimes de retraite/pension compétitifs
• Vacances et congés personnels généreux
• Soutien aux nouveaux parents grâce à des congés et des programmes de soutien aux familles
• Collations offertes au bureau
• Programmes et soutien en matière de santé mentale et de bien‑être
• Groupes‑ressources pour employés
• Programme mondial d’aide aux employés
• Programmes de formation et de perfectionnement
• Programme de bénévolat et de jumelage de dons

Benefits

• 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

La vie chez Unity

Unity [NYSE : U] est le premier moteur de jeu au monde, propulsant les expériences de plus de 3 milliards d’utilisateurs(rices) chaque mois. Les plus grands jeux mobiles, les titres indépendants PC les plus populaires, des jeux console parmi les plus innovants, ainsi que la quasi‑totalité des principales expériences XR et jeux Web sont développés, déployés et optimisés avec Unity. Unity accompagne également des équipes dans des secteurs tels que l’automobile, l’industrie manufacturière et la santé pour concevoir, simuler et collaborer en 3D - comblant ainsi l’écart entre les idées et la réalité. Pour plus d’informations, veuillez visiter www.unity.com.

Unity is a proud equal opportunity employer. We are committed to fostering an inclusive, innovative environment and celebrating 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.

Si vous avez une handicap qui signifie des préparations ou des accommodations que nous pouvons faire pour vous assurer une expérience d’entretien confortable et positive, veuillez remplir ce formulaire pour nous le faire savoir.

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.

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.

Unity is a proud equal opportunity employer. We are committed to fostering an inclusive, innovative environment and celebrating 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.