Full Stack Engineer 4 jobs in Riverwoods, IL

Walk me through how tokenization works for digital wallets, from provisioning a token to detokenizing at authorization.

What they are checking: Whether they understand the payments domain this team owns, not just general web development.

Tell me about a distributed microservices system you built that had to be highly available. How did you design for failure?

What they are checking: Whether they have real experience with resilience patterns like retries, timeouts and circuit breakers at scale.

How would you design an API for detokenization so it is fast and also resistant to fraud and abuse?

What they are checking: Whether they balance latency with security controls like authentication and domain restriction.

You lead a team of developers. Tell me about a technical decision you made that the team disagreed with.

What they are checking: Whether they can lead technically, listen to dissent and still move the team forward.

A payment service starts showing elevated latency during peak hours. How do you investigate?

What they are checking: Their production debugging method across services, databases and infrastructure under pressure.

How do you make sure sensitive card data never ends up in logs or monitoring tools?

What they are checking: Whether they understand PCI-style data protection in practice, not just in theory.

Tell me about a project where you balanced several competing priorities across a portfolio. How did you decide what came first?

What they are checking: Whether they can lead a portfolio of projects, as the posting describes, without losing focus.

How do you approach testing for a payments system where mistakes cost real money?

What they are checking: Whether they use thorough automated testing and safe deployment practices for critical systems.