Senior Backend Engineer - Payments & Ledger (Remote Spain)

MaxIT Consulting - Max Corporate Group; Madrid; Remote; EUR 90,000 - 130,000; Full time

Job summary

MaxIT Consulting - Max Corporate Group seeks a Senior FinTech Engineer to join a fast-growing New York fintech company building banking, payments, and settlement infrastructure. You will design, build, and operate backend systems that move money and ensure real-time processing with strong data integrity.

The role emphasizes ownership of production systems, ledger-style data models, and high reliability in a distributed environment, requiring deep financial-services experience and autonomous

Qualifications

• 6+ years of backend engineering experience.
• Production ownership of systems that move or manage money.
• Experience in payments, banking, brokerage, trading, neobank, or related finance company.
• Hands-on distributed or event-driven production systems.
• Strong SQL skills and ledger-style data modeling.
• Focus on reliability, correctness, and financial integrity in production.
• Able to operate autonomously as a senior individual contributor.
• Resident and authorized 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 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 platform scales.

Skills

Backend engineering

Payments/financial systems experience

Distributed / event-driven systems

SQL proficiency

Ledger/data models

Production reliability

Autonomous contributor

Spain work authorization

Job description

MaxIT Consulting - Max Corporate Group seeks a Senior FinTech Engineer to join a fast-growing New York fintech company building banking, payments, and settlement infrastructure. You will design, build, and operate backend systems that move money and ensure real-time processing with strong data integrity.

The role emphasizes ownership of production systems, ledger-style data models, and high reliability in a distributed environment, requiring deep financial-services experience and autonomous