AI Agent Developer & Tester in Sandy, Utah

Location

Sandy, Utah

Job Type

Full-time

Salary

$80,000 – $100,000/yr

Company

Smith Johnson Group

Responsible for implementing and testing Lang Graph-based AI agent workflows within the APEX platform, including node-level unit testing, graph-level integration testing, regression suite ownership, and production observability. Also owns E2E UI test coverage via Playwright across all three APEX portals and manages GCP infrastructure supporting the agent layer. Must Have • Agent unit testing - every node tested in isolation with mocked state before it ships • Agent graph testing - full end-to-end graph runs with controlled inputs • LLM mocking strategies – unit test, mock, fake model stubs, or framework-level mocking; non-determinism must be controlled • Flaky test management - controlled seeds, mocked outputs, or threshold-based assertions for non-deterministic agent behavior • Regression test authorship - every bug fixed gets a regression test before the fix is considered done • Playwright E2E testing - responsible for test coverage, not just test authorship; actively tracks and closes flow gaps • Structured output / JSON schema validation • Application Development and Support Experience in cloud (GCP is preferred but any cloud is fine) Nice to Have • Lang Smith / RAGAS • Financial services / regulated industry #J-18808-Ljbffr