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 ideal 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 product and engineering
teams in a small, distributed environment. Contribute to
architecture decisions as the financial platform and engineering
organization continue to scale. Required Qualifications 6+ years of
professional backend engineering experience. Production ownership
of systems that directly move or manage money. Professional
experience as an employee of a payments, banking, brokerage,
trading, neobank, or closely 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. Particularly Relevant Backgrounds Neobanks and digital
banking platforms. Payments companies and payment infrastructure.
Brokerage and trading platforms. Card issuing and card-processing
systems. Ledger, reconciliation, clearing, and settlement
platforms. High-volume financial products where transaction
correctness is business-critical. Idóneo Candidate Profile The
strongest candidates have worked directly inside financial product
companies and can clearly describe the systems they personally
owned in production. Financial-services exposure obtained
exclusively through consulting or IT-services projects is not
considered equivalent for this search. This opportunity is
particularly suited to senior engineers who want to remain hands-on
and take substantial ownership of critical financial
infrastructure. Work Arrangement This opportunity is fully remote
within Spain. Candidates must currently be based in Spain and
already have legal authorization to work in the country.
Application If your background aligns with this opportunity, please
submit your application through this same channel . Please include:
Your updated CV or resume. Your gross annual compensation
expectations in EUR. A brief indication of the financial products,
payment systems, ledger platforms, or transaction systems you have
personally owned in production.

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