Développeuse ou développeur backend sénior, Outils IA internes / Senior Backend Developer, Internal AI Tooling

The opportunity

We are hiring a Senior Backend Developer to join our Engine AI team. This is a small high-impact team that builds the internal AI tools and infrastructure that make developers within our Engine group faster and more effective every day.

In this role, you will be responsible for designing, developing, and maintaining the backend infrastructure that powers our internal AI solutions, with a focus on the performance, reliability, and scalability of inference systems. You will collaborate closely with tech leads, product, and engineering teams to build and operate the critical services that support the whole Unity Engine organization. This role offers the unique opportunity to move beyond consumption to creation, as you actively build and shape the Agentic tools that will drive a new era of productivity across Unity.

What you'll be doing

• Design, develop, and deploy scalable, high-performance, and production-grade backend services and distributed systems to support large-scale model inference.
• Contribute significantly to the technical roadmap and design of our inference platform, focusing on low-latency, high-throughput services.
• Architect and implement core services for the Agent Development Kit (ADK) and other AI orchestration frameworks, enabling reliable state management and complex multi-agent workflows.
• Ensure the reliability, scalability, and efficiency of our systems in production using monitoring and observability tools like Prometheus and Grafana.
• Partner cross-functionally with release management, release QA, product, and engineering teams to align our solutions with strategic business needs.
• Manage and optimize our cloud infrastructure (GCP) and orchestrate workloads with Kubernetes.
• Promote and implement best practices for backend service development, testing, deployment, and monitoring (DevOps, SRE).

What we're looking for

• Extensive hands-on experience designing, deploying, and maintaining distributed systems at scale, including managing cloud infrastructure on GCP and orchestrating workloads with Kubernetes.
• Expertise in Python / Node.js / Golang for building high-performance, low-latency systems and infrastructure.
• Familiarity with Agent Development Kit (ADK), Claude SDK, LangGraph or other AI agents orchestration frameworks.
• Familiarity with microservice architectures, containerization (Docker), and CI/CD best practices.
• Excellent communication and collaboration skills, with an ability to articulate technical concepts to both technical and non-technical audiences.

You might also have

• A DevOps or SRE background with experience in infrastructure automation.
• Experience building GitHub integrations or automated developer tooling.
• Experience and a passion for building tools specifically for internal developer workflows.

Additional information

• Relocation support is not available for this position
• Work visa/immigration sponsorship is not available for this position