Senior Software Engineer Fiat Payments & Banking Infrastructure

About the Role You design and implement scalable fiat payment rails and banking infrastructure. You integrate with banking partners and external processors. You build robust treasury management software for internal operations enabling programmatic liquidity management and automated balance transfers between partner banks. You develop internal tooling to support reconciliation automated alerts financial operations and compliance reporting. You contribute to the design and development of software in an event driven microservices environment. You develop microservices primarily in Golang. You work closely with platform engineers to set up new services and scale existing infrastructure. You respond to production issues and alerts ensuring high availability of our payment gateways. When necessary you 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. 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. Excellent verbal and written communication skills.

Responsibilities 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. Support the company's vital business by contributing 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. When necessary, communicate directly with banking partners and client technical teams to resolve complex integration issues.

Benefits Healthcare 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) Senior Backend Engineer Finapps/Access Fireblocks · 1 day ago Senior Python Engineer Crystal Blockchain B.V. · 1 week ago Senior Python Engineer (Remote) Crystal Blockchain B.V. · 1 week ago Senior Software Engineer Backend TRM Labs · 1 week ago Senior Software Engineer, Backend & API Integrations Reap · 3 weeks ago Senior Backend Engineer Finapps/Access Fireblocks · 1 day ago Senior Python Engineer Crystal Blockchain B.V. · 1 week ago Senior Python Engineer (Remote) Crystal Blockchain B.V. · 1 week ago Senior Software Engineer Backend TRM Labs · 1 week ago Senior Software Engineer, Backend & API Integrations Reap · 3 weeks ago