Senior Backend Engineer for AI Platform & Infra

Unity Enterprise; Mountain View (CA); Hybrid; USD 136,000 - 204,000; Full time

Benefits offered by this job

Health insurance

Employee stock ownership

Generous vacation scheduling

Job summary

Unity Technologies in Mountain View, CA is seeking a Senior Backend Engineer to build and operate the platform behind an internal AI product analytics agent. You will design backend services, APIs, and self-service tooling for Unity teams, while owning access control and data security.

The role focuses on reliability, performance, and cost efficiency at scale. You will collaborate with data scientists and partner teams to turn platform needs into reusable capabilities and help steer the

Qualifications

• Experience designing, building and operating distributed systems, backend services or internal platforms in production.
• Strong backend and systems engineering skills: service design, API design, debugging and production operations.
• A solid grasp of distributed systems fundamentals, including scalability, reliability, fault tolerance and the trade-offs between them.
• Practical experience with cloud-native infrastructure, ideally GCP, plus container orchestration, CI/CD, infrastructure as code and observability tooling.
• Experience implementing authentication, authorisation or access control in systems handling sensitive data.
• Experience with, or a demonstrated interest in, LLM and agent systems, particularly orchestration and workflow design.

Responsibilities

• Design, build and operate the backend services, APIs and self-service tooling that the platform and other Unity teams depend on.
• Own access control and data security for the platform: authentication, authorisation, permissioning of the underlying datasets, and auditability.
• Build and harden the platform's integration surfaces, including the MCP server that exposes governed data to AI tools.
• Take responsibility for reliability, performance and cost efficiency, covering latency, scaling behaviour, fault tolerance, observability and incident response.
• Raise the engineering bar on the codebase: service design, testing, CI/CD, infrastructure as code and deployment safety.
• Contribute to agent capability work end to end, including orchestration, knowledge retrieval and user-facing surfaces.
• Work with data scientists and partner teams to turn platform needs into reusable capabilities.
• Help set the roadmap and technical direction for the platform.

Skills

Distributed systems

Backend services

API design

CI/CD

Observability

Tools

GCP

Kubernetes

CI/CD tools

Infrastructure as code

Job description

Unity Technologies in Mountain View, CA is seeking a Senior Backend Engineer to build and operate the platform behind an internal AI product analytics agent. You will design backend services, APIs, and self-service tooling for Unity teams, while owning access control and data security.

The role focuses on reliability, performance, and cost efficiency at scale. You will collaborate with data scientists and partner teams to turn platform needs into reusable capabilities and help steer the