21 hours ago
Base Salary
$264k - $395k/yr
Responsibilities
- Serve as a technical expert on global card networks, specifications, message flows, certification requirements, mandates, and production behavior.
- Lead complex, ambiguous engineering problems spanning multiple teams, systems, and domains.
- Write production code, build certification and conformance tooling, analyze network messages, review designs and code, and debug at the protocol and field level.
- Drive network certification and mandatory release cycles and translate network requirements into engineering decisions.
- Create shared frameworks, standards, tooling, and practices that enable teams to operate independently.
- Mentor engineers through design guidance, code reviews, documentation, and technical judgment.
- Apply AI-powered tools across the engineering lifecycle and establish effective usage patterns.
- Participate in on-call rotation, incident response, and reliability improvements for critical financial systems.
Requirements
- Deep, current expertise with at least one major card network, ideally Visa, including direct connectivity, ISO 8583, authorization and clearing flows, stand-in processing, specifications, certification, and mandate cycles.
- Personally built, certified, or operated a live direct network connection rather than only integrating through a processor.
- Experience working directly with card networks to achieve rulings, exceptions, extensions, configuration changes, defect fixes, or certification outcomes.
- Strong hands-on software engineering experience building and operating highly reliable financial or payments systems at scale.
- Experience leading technically complex, ambiguous work across team boundaries and influencing technical direction beyond the immediate area of ownership.
- Experience creating frameworks, standards, tooling, architecture, or practices adopted by other engineers and teams.
- Broad understanding of the card lifecycle, with depth in areas such as issuance, fulfillment, provisioning, activation, authorization, ledgering, settlement, reconciliation, disputes, or fraud.
- Working knowledge of Mastercard and American Express in addition to deep expertise in at least one major network.
- Fluency with AI-assisted engineering workflows and judgment in evaluating and applying AI-generated output.
- Willingness to participate in an on-call rotation for critical financial systems.
Benefits
- Remote work is available, with Block operating as a distributed team across applicable countries and locations.
- Benefits include medical insurance, flexible time off, retirement savings plans, and modern family planning.
- The role includes practical operational participation through on-call and incident-response rotations.
Categories
About Block
Block is one company built from many blocks, all united by the same purpose of economic empowerment. The blocks that form our foundational teams — People, Finance, Counsel, Hardware, Information Security, Platform Infrastructure Engineering, and more — provide support and guidance at the corporate level. They work across business groups and around the globe, spanning time zones and disciplines to develop inclusive People policies, forecast finances, give legal counsel, safeguard systems, nurture new initiatives, and more. Every challenge creates possibilities, and we need different perspectives to see them all. Bring yours to Block.