Senior Business Advisor, Payments Optimization (ACH)
Posted Sep 22, 2026 · We last checked this listing on Oct 6, 2026
Likely interview questions for this role
Written from this job description, not a generic list. Each one notes what the interviewer is really checking.
About your past
Tell me about a time you documented a current-state process that nobody had written down before. How did you get the real story?
What they are checking: Whether they can pull accurate process knowledge out of people rather than relying on outdated documents.
Describe a requirements session that went off the rails. How did you bring it back?
What they are checking: Whether they can facilitate stakeholders and keep a session focused on decisions.
Tell me about a time you took ownership of an initiative after someone else started it.
What they are checking: Whether they can step into partial work, find the gaps and carry it to completion.
What would you do
You will own same day settlement, ACH optimization and file changes, and credit push and reinitiation work. Which of those would you get your arms around first, and why?
What they are checking: Whether they can sort a crowded set of initiatives by risk and dependency instead of starting everywhere.
This role spans two organizations. How do you build a single knowledge repository when each side does things differently?
What they are checking: Whether they can align groups with different habits around one shared source of truth.
A file format change for ACH is going live and a downstream team says they were not told. What do you do?
What they are checking: Whether they handle change management gaps quickly and fix the communication process behind them.
About the work
Walk me through the life of an ACH credit from origination through settlement, and where same day ACH changes the timing.
What they are checking: Whether they truly understand ACH flows and settlement windows, which this role is built on.
What are the Nacha rules around reinitiating a returned entry, and why do they exist?
What they are checking: Whether they know the reinitiation limits that keep originators compliant and protect receivers.
How do you write a future-state process so that engineers and operations staff both understand it?
What they are checking: Whether they can produce documentation that serves technical and business readers at once.
How would you measure whether an ACH optimization effort actually worked?
What they are checking: Whether they think in outcomes like return rates, settlement timing and exceptions, not just delivery dates.
What risks do you watch for when a payments change touches settlement timing?
What they are checking: Whether they understand liquidity, reconciliation and fraud risks that come with faster money movement.
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As published by Fiserv.