Demo

Fiserv Debit Card Processing Conversion SME

Heitmeyer Consulting
Buffalo, NY Full Time
POSTED ON 7/10/2026
AVAILABLE BEFORE 8/8/2026
Location: 100% remote. Must work EST hours

Role Overview

We are seeking a subject matter expert in debit card processing conversions, specially with Fiserv, acting as a Business Systems Analyst to support our banking client’s high visibility debit card processing conversion from a home grown system to Fiserv. This role goes well beyond traditional requirements gathering. The ideal candidate will act as the go to conversion expert, a designer and translator, bridging business, technical, and vendor teams to deliver a stable, well designed debit processing solution.

Key Responsibilities

  • Lead conversion focused analysis, including:
    • Pre cutover, dual run, and post cutover designs
    • Error handling, exception flows, and fallback scenarios
  • Own and create end-to-end debit solution designs across internal systems, Fiserv platforms, and card networks.
  • Create and validate:
    • System interaction diagrams (issuer systems Fiserv card networks merchants)
    • Data mapping designs (field level mappings, codes, reason codes)
  • Make design decisions that balance:
    • Business needs
    • Fiserv platform constraints
    • Risk and regulatory considerations
    • Customer experience and impact
  • Act as the primary liaison and translator between business stakeholders, technology teams, and Fiserv during the conversion.
  • Proactively identify risks and mitigate issues related to:
    • Authorization and settlement failures
    • Posting errors
    • Customer impact and Reg E considerations
  • Create clear, high?quality documentation to support:
    • System design reviews
    • Test planning and execution
    • User Acceptance Testing (UAT)
  • Actively participate in and support UAT execution and defect resolution.

Must Have Qualifications

  • 12 years of experience. SME level for debit card processing and acting as a BSA or equivalent role
  • Fiserv debit card processing experience
  • Deep understanding of debit card processing, including:
    • Authorization, clearing, and settlement flows
    • POS vs. ATM transactions
    • PIN vs. signature debit
    • Stand?in processing
    • Card network flows (Visa, Mastercard, STAR, NYCE, etc.)
    • Fraud, disputes, chargebacks, and transaction reversals
  • Proven ability to produce and defend design artifacts, including:
    • End to end debit transaction process flows
    • System interaction diagrams
    • Detailed data mapping documentation
    • Conversion state designs (pre cutover through post cutover)
    • Error handling and exception flow designs
  • Excellent verbal and written communication skills
    • Must be confident, articulate, and able to lead conversations
    • This is not a role for a wallflower or a passive/meek personality


Nice To Have Skills

  • Jira and Confluence
  • Zephyr or other test management tools
  • Experience supporting or coordinating automated testing


Heitmeyer Consulting is an equal opportunity employer, and we encourage all qualified candidates to apply. Qualified applicants will be considered without regard to minority status, gender, disability, veteran status, or any other characteristic protected by law

Salary.com Estimation for Fiserv Debit Card Processing Conversion SME in Buffalo, NY
$45,311 to $59,544
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