Every day, we connect billions of players with the games and experiences they love.

Our Vector

Gamer AI team sits at the heart of that mission, governing ad ranking and bidding decisions across billions of daily impressions, where large-scale machine learning and real-world impact converge at scale. We’re hiring a Staff Backend Engineer to build and operate the infrastructure those models depend on. You’ll design and operate the distributed systems that power billions of daily decisions, with a focus on the performance, reliability, and scalability of inference systems.

Join us and help influence how billions of gaming experiences are discovered, monetized, and how creators are rewarded. Design, develop, and deploy production-grade backend services and distributed systems powering large-scale online model inference at billions of daily requests Drive technical direction of our inference platform, with a focus on low-latency, high‑throughput serving infrastructure Partner with ML engineers to ensure online serving infrastructure scales with growing model complexity and inference volumes, without compromising latency or throughput Promote and implement best practices for backend service development, testing, deployment, and monitoring (DevOps, SRE) Expertise in Golang for building high‑performance, low‑latency backend infrastructure ~ Strong grounding in monitoring and observability tooling, including Prometheus and Grafana ~ Experience in ad tech, recommender systems, real‑time personalization, or other performance‑critical domains ~ Familiarity with machine learning platforms, workflows, and serving infrastructure Experience with ML inference servers like NVIDIA Triton Inference Server Relocation support is not available 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).



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 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. 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. This position requires the incumbent to have a sufficient knowledge of English to have skilled 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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📌 Staff Backend Engineer, Ml Inference Systems (Montreal)
🏢 Unity Technologies
📍 Montreal