Senior Backend Engineer - Payments & Ledger (Remote Spain)

MaxIT Consulting - Max Corporate Group; Madrid; Remote; EUR 90,000 - 140,000; Full time

Job summary

MaxIT Consulting - Max Corporate Group in Spain is seeking a Senior FinTech Engineer specialized in Payments & Financial Systems to join a fast-growing New York fintech company. This fully remote role focuses on banking, payments, and settlement infrastructure for prediction markets and regulated gaming.

You will own end-to-end production systems, ensuring correctness, reliability, and real-time processing.

Qualifications

• 6+ years of professional backend engineering experience.
• Production ownership of systems that directly move or manage money.
• Experience in payments, banking, brokerage, trading, neobank, or related financial product company.
• Hands-on experience with distributed and/or event-driven systems in production.
• Strong SQL skills.
• Experience designing ledger-style, transactional, or financial data models.
• Strong understanding of production reliability, consistency, and financial correctness.
• Ability to operate autonomously as a senior individual contributor.
• Current residence in Spain.
• Existing authorization to work in Spain.

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 product and engineering teams in a small, distributed environment.
• Contribute to architecture decisions as the financial platform and engineering organization scale.

Skills

Backend engineering

Distributed systems

Event-driven architecture

SQL

Financial systems

Production ownership

Job description

MaxIT Consulting - Max Corporate Group in Spain is seeking a Senior FinTech Engineer specialized in Payments & Financial Systems to join a fast-growing New York fintech company. This fully remote role focuses on banking, payments, and settlement infrastructure for prediction markets and regulated gaming.

You will own end-to-end production systems, ensuring correctness, reliability, and real-time processing.