Staff Software Engineer, Payments Acquiring

What you'll do

• Own the technical direction of complex card payment projects from initial design through production rollout.
• Write production code and build testing and certification tooling for card acceptance systems.
• Analyze network messages and debug issues down to the protocol and field level.
• Make technical decisions on routing, retries, and processing costs based on authorization rates and fees.
• Establish shared frameworks, standards, and tooling to make payments expertise durable for the engineering team.
• Mentor other engineers through design guidance, code reviews, and technical judgment.
• Share operational ownership of critical financial systems through on-call rotations and incident response.
• Build with AI agents across the engineering lifecycle to set patterns for safe money-moving systems.

What we're looking for

• Bring deep card acceptance expertise, including reading network specifications, ISO 8583 messages, mandates, and interchange rules.
• Experience building or running integrations that talk to networks, acquirers, or processors at the message level.
• Strong hands-on software engineering experience building and operating highly reliable financial or payments systems at scale.
• Track record of leading technically complex projects from design through delivery and setting technical direction for engineers.
• Experience creating durable technical leverage such as frameworks, standards, tooling, architecture, or practices.
• Broad understanding of card payment flows, including data security, tokenization, routing, authorization, capture, clearing, and settlement.
• Solid understanding of card network rules and the roles of acquirers, processors, payment facilitators, and sponsor banks.
• Daily experience building with AI coding agents and good judgment regarding their output (preferred).