Senior Backend / Systems Engineer (AI) - San Mateo, CA

TrustLab is seeking a Backend / Systems Engineer to help build a flexible, robust, and high-performance backend architecture that serves diverse use cases across customers and product lines. This role is critical for enabling AI engineers, analysts, and data scientists to rapidly prototype and deploy workflows and services leveraging large language models (LLMs).

Responsibilities:

• Design and build extensible backend systems that support flexible configurations for different customers and content types
• Develop infrastructure that interfaces cleanly with LLMs, enabling prompt engineering, context injection, and modular evaluation workflows
• Build tooling and platforms that enable fast iteration by AI engineers and analysts, including declarative pipelines, parameterized jobs, and reproducible experiments
• Prioritize ease of deployment, integration, and testing, both for internal teams and external partners
• Collaborate closely with product, data, and policy teams to translate nuanced safety needs into scalable, maintainable software systems