Staff Software Engineer, Financial Platform - Issuing

Block
Seattle, San Francisco
Workplace: RemoteFull timeUSD 263,600 - 395,400Function: Software EngineeringSkills: ["Hands-on problem solving","Technical judgment","Design guidance","Code review","Mentorship"]

Build and operate the card issuing platform systems that power Cash App Card and other Block card programs. Deeply apply card-network and protocol expertise to debug at the message/field level, create certification and conformance tooling, and drive certification and mandatory release cycles end to end. Lead complex, ambiguous engineering problems across teams and work directly with card networks to influence requirements and secure outcomes for Block.

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FursaFursa
Block
Block
2 days ago

Staff Software Engineer, Financial Platform - Issuing

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 6 hours agoStatus: Live

Job Summary

Build and operate the card issuing platform systems that power Cash App Card and other Block card programs. Deeply apply card-network and protocol expertise to debug at the message/field level, create certification and conformance tooling, and drive certification and mandatory release cycles end to end. Lead complex, ambiguous engineering problems across teams and work directly with card networks to influence requirements and secure outcomes for Block.
Location: Seattle, San Francisco
Workplace: Remote
Employment Type: Full time
Job Function: Software Engineering
Seniority: Mid level

Key Responsibilities

  • •Serve as a deep technical expert on global card networks, interpreting specifications, message flows, certification requirements, mandates, and production behavior.
  • •Lead complex, ambiguous engineering problems at the network boundary spanning multiple teams, systems, or domains.
  • •Write production code and build certification/conformance tooling; analyze network messages and debug issues down to protocol and field level.
  • •Drive network certification and mandatory release cycles end to end, translating network requirements into pragmatic engineering decisions.
  • •Provide operational ownership through on-call, incident response, and continuous improvements to reliability and correctness.

Pay and Benefits

Salary: USD 263,600 - 395,400
Perks:Remote WorkHealth InsuranceFlexible TimeRetirement Savings

Key Requirements

  • •Deep, current expertise with at least one major card network (ideally Visa), including direct connectivity, ISO 8583, authorization and clearing flows, and certification/mandate cycles.
  • •Personally built, certified, or operated a live direct network connection (not only via a processor).
  • •Experience working directly with card networks to land concrete outcomes such as 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 creating durable technical leverage (frameworks, standards, tooling, architecture, or practices) adopted by other engineers and teams.
Experience:PaymentsFintechCard networksFinancial services
Skills:Hands-on problem solvingTechnical judgmentDesign guidanceCode reviewMentorship
Languages:English
Tech Stack:VisaMastercardAmerican ExpressCard networksISO 85833-D SecureReal-time transaction authorizationClearing and settlementDisputesAI-assisted engineering workflows

Company Brief

Block
Builds financial services and commerce tools to empower businesses and individuals, operating products such as Square, Cash App, Spiral (Bitcoin initiatives), TIDAL, and developer-focused payment and banking solutions.
Industry: Fintech Infrastructure
Company Size: Enterprise (1,001+ employees)
Revenue: USD 1B+
Growth: Public Company
Valuation: Public Company (Market Cap in USD)
Funding: IPO / Publicly Listed
Headquarters: San Francisco, United States
Founded: 2009
WebsiteLinkedIn