Skip to content
FH FluxHarbor Payments Contact desk

Service packages / Gateway Integration

Gateway Stack Architecture Sprint

A four-week diagnostic and design engagement that maps your current gateway dependencies and proposes a subscription-ready stack.

Duration4 weeks
FormatHybrid (remote with two on-site days)
Investment₩9,800,000
Lead consultantYejin Park

Brief

We sit with your engineering, finance, and ops teams to take inventory of every payment surface in production. From there we draft an architecture that supports recurring billing, retries, and tax routing without forcing you to rebuild from scratch. Deliverables include a written architecture brief, a sequencing plan, and a working session with your CTO.

Inclusions

  • Current-state audit across gateways, processors, and acquiring banks
  • Subscription-ready reference architecture document (35-50 pages)
  • Failure mode catalogue with mitigations
  • Vendor short-list with commercial estimates
  • Two-hour executive walkthrough with recorded session
  • Slack channel with our team for the duration of the sprint

What you will hold at the end

  1. Clear picture of gateway risk and concentration
  2. Documented target stack you can build against
  3. Sequenced rollout plan tied to revenue impact

Common questions

From earlier engagements

"The failure mode catalogue alone changed how we triage retries. We had been blaming the processor when half of it was our own webhook ordering."

★★★★☆

"Sharp work. We asked for an architecture, we got an architecture, and the sequencing plan was honest about what would actually pay back this year."