Spain | Remote | Senior Engineering Opportunity

MaxIT Consulting – Max Corporate Group is looking for a Senior Backend Engineer, Payments and Ledger to join a fast-growing New York fintech company building banking, payments, and settlement infrastructure for US prediction markets and regulated gaming.

The company operates financial infrastructure that has already processed more than USD 2 billion, supporting accounts, card products, payment rails, and real-time settlement. The engineering organization is scaling rapidly and is looking for senior individual contributors with substantial financial-services experience.

About the Role

This is a senior backend engineering position focused on systems that move, reconcile, and maintain money in production.

You will work on financial infrastructure where correctness, reliability, data integrity, and real-time processing are fundamental. The idóneo candidate has already built and operated systems inside a payments company, bank, neobank, brokerage, trading platform, or comparable financial product organization.





The specific technology stack is not the primary selection criterion. Deep financial-services experience, distributed-systems knowledge, and ownership of production systems are more important than expertise in one particular programming language.

Key Responsibilities
- Design, build, and operate backend systems supporting accounts, payments, balances, cards, and settlement flows.
- Develop highly reliable services for systems that move money in production.
- Build and maintain distributed and event-driven architectures.
- Design robust ledger-style data models and transaction workflows.
- Work extensively with SQL, relational databases, reconciliation, and consistency requirements.
- Own backend services from technical design through deployment, monitoring, and production operation.
- Investigate complex production issues involving financial state, event processing, and transaction integrity.
- Collaborate with

📌 Senior Backend Engineer, Payments and Ledger (Madrid)
🏢 Max Corporate Group
📍 Madrid