Full Stack Engineer 4 People jobs in Chicago, IL

Walk me through how you'd build an agent with LangGraph that helps associates answer HR policy questions.

What they are checking: Whether they understand state, tools and control flow in agentic systems, not just calling a model.

How do you stop a GenAI system that serves HR and Legal from giving confident wrong answers?

What they are checking: Whether they know grounding, evaluation and fallbacks, since wrong answers in these areas cause real harm.

What would you do differently when an agent handles sensitive employee data?

What they are checking: Whether they think about access control, logging and least privilege for people data.

How do you test and evaluate an LLM-powered feature before it goes to production?

What they are checking: Whether they have a real evaluation approach rather than trying a few prompts by hand.

Tell me about a full stack feature you owned from the frontend through the API to the database.

What they are checking: Whether they are comfortable across the whole stack, which this role requires.

An HR partner asks for an AI feature that you think will create more risk than value. How do you respond?

What they are checking: Whether they can push back with reasons and offer a safer path instead of just building what is asked.

People Tech cares about architectural consistency across many teams. How do you balance that with experimenting quickly?

What they are checking: Whether they can experiment within shared standards rather than creating one-off systems.

Describe a time you mentored other engineers on a new technology.

What they are checking: Whether they raise the skill of the team, which matters at this senior level.