Senior AI Engineer: Evaluation & Optimization (Remote)

Vantaca is seeking a Senior AI Engineer, Evaluation & Optimization to own the production AI infrastructure, experiments, and feedback loops for millions of tasks. You will design evaluation methods, benchmark models, and optimization loops across prompts, routing, and configurations, primarily using TypeScript. The role emphasizes rigorous production testing, cross-provider model experimentation, and cost-aware improvements in a high-volume environment.