Trajectory
Member of Technical Staff - Generalist
San Francisco · On-site · Staff · Full-time · Posted May 7, 2026
About the job
Build the developer-facing product experience and infrastructure that help customers understand, debug, evaluate, and monitor continually improving models.
What you'll do
- Own SDKs, API surfaces, and integration infrastructure.
- Build product interfaces and workflows for trajectory visualization, evaluation, and monitoring.
- Work with founders and design partners to shape the product’s visual language, interactions, and philosophy.
What they ask for
- Strong full-stack or backend engineering experience.
- Experience building AI-powered products or agent systems.
- Experience building developer-facing products or SDKs.
- Experience with data pipelines, telemetry systems, or event infrastructure.
Nice to have
- Experience building observability, tracing, or monitoring systems.
- Experience at early-stage developer tooling startups.
AI focus
Build product interfaces and workflows for continual learning, evaluation, monitoring, and debugging of improving AI models; experience building AI-powered products or agent systems is required.
Model-written summary · the original posting is authoritative