Drimva

Block

Staff Software Engineer, Payments Acquiring

$264K–$395K

Seattle, WA, United States of America +1 · Remote · Staff · Full-time · Posted Oct 8, 2026

Location
Seattle, WA, United States of America
US - CA - Bay Area - Remote

About the job

Leads hands-on engineering projects that expand and improve Block’s card-acquiring systems across Square, Cash App, and Afterpay.

What you'll do

  • Lead one or two complex acquiring projects from technical design through production rollout, including network and acquirer connections or network mandates.
  • Build and operate payment systems and tooling; analyze payment messages and make data-backed decisions on routing, retries, reliability, and processing costs.
  • Establish reusable standards and frameworks, mentor engineers, and share operational responsibility for critical systems, including on-call and incident response.

What they ask for

  • Deep card-payment integration experience at the message level, such as ISO 8583 or an acquirer’s host format—not only payment-provider APIs.
  • Hands-on experience building and operating reliable financial or payment systems at scale, and leading technically complex projects from design through delivery.
  • Experience creating technical frameworks, standards, tooling, architecture, or practices adopted by other engineers or teams.
  • Daily experience building with AI coding agents; willingness to participate in an on-call rotation.

Nice to have

  • Acquiring or merchant-side experience; direct network connection experience is a strong plus.
  • ISO 20022 experience.

Pay

$263,600 — $395,400 USD (base salary, Zone A); $263,600 — $395,400 USD (base salary, Zone B); $263,600 — $395,400 USD (base salary, Zone C); $263,600 — $395,400 USD (base salary, Zone D)

Tools

ISO 8583, ISO 20022, Visa, Mastercard, American Express, Discover

AI focus

Build with AI agents across the engineering lifecycle and help establish safe-use patterns for systems that move money; daily experience with AI coding agents is required.

Model-written summary · the original posting is authoritative

First seen Oct 10, 2026 · Last verified Nov 5, 2026 (UTC)