Senior Software Engineer, Fiat Payments & Banking Infrastructure

About the role

zerohash is looking for a Senior+ Software Engineer to architect and build our fiat payment systems, scaling our gateway to Finance 2.0. We are a high-performing team looking for an equally ambitious and driven teammate.

Responsibilities

• Build and maintain robust fiat rails such as ACH, RTP, FedNow, RFP in the US, and SEPA in Europe.
• Direct API integrations with top-tier banking partners.
• Develop sophisticated software to autonomously manage and reconcile balances across banking networks.
• Create internal tooling to streamline financial operations and scale our capacity to handle millions of transactions securely.
• Lead the architectural design and hands-on development of our global fiat payment rails (ACH, RTP, FedNow, Request for Pay, and SEPA).
• Architect, implement, and scale seamless API integrations into our banking partners' systems.
• Design and build robust treasury management software for internal operations, allowing programmatic liquidity management and automated balance transfers between partner banks.
• Develop robust internal operational tooling to support reconciliation, automated alerts, financial operations, and compliance reporting.
• Contribute to the design and development of software in an event-driven microservices environment.
• Develop microservices, primarily utilizing Golang.
• Work closely with platform engineers to set up new services and scale existing infrastructure.
• Respond to production issues and alerts, ensuring high availability of our payment gateways.
• Communicate directly with banking partners and client technical teams to resolve complex integration issues.

Requirements

• 7+ years of software engineering experience, specifically focused on Payments, FinTech, or Banking-as-a-Service (BaaS) infrastructure.
• Deep proficiency with Golang in a production environment.
• Extensive understanding of traditional fiat networks and clearing systems (e.g., ACH, RTP, FedNow, SEPA, Swift).
• Strong expertise in SQL and complex database schema design for high-throughput, ACID-compliant financial ledgers.
• Hands-on experience developing, integrating, and maintaining resilient connections with bank APIs and third-party payment processors.

Qualifications

• A humble and scrappy get-it-done mindset; you're resourceful and in your element going from 0 to 1.
• Excellent problem-solving skills; you can systematically troubleshoot complex distributed systems.
• Comfort with ambiguity; the ability to independently lay out and test clear hypotheses, and solve architectural problems without well-defined direction.

Skills

• Excellent verbal and written communication skills.

Benefits

• Fiat Insurance: zerohash covers roughly 100% of employee premiums as well as a portion of spouse/children (U.S. only)
• Vision & Dental Insurance (U.S. only)
• Chance to earn equity
• Maternity & Paternity leave (after 6 months)
• WeWork All Access Membership
• WFH Yearly Stipend
• L&D Yearly Stipend (after 6 months)

Pay

Competitive salary and equity package.

Schedule

Full-time, remote work.