Position overview

We are looking for a Senior C# Engineer to join our FinTech team developing a remittance and payment services platform. The project focuses on building secure and compliant systems for international money transfers, partner integrations, and automation of financial operations.

We expect the new team member to be technically strong, proactive, and business-oriented, with proven experience in FinTech system development — ideally in areas such as core banking, remittance, or API-based financial integrations. You will work closely with business and operations teams to ensure efficient, accurate, and transparent financial workflows.

Project Description

A licensed remittance and payment services provider focused on enabling fast, secure, and compliant international money transfers. The company operates within the FinTech domain, serving global remittance corridors and integrating with multiple partners and financial institutions through API-based connectivity.

Only candidates, located in Madrid or willing to relocate, will be considered.

Your background

5+ years of commercial experience in backend development using C# / .NET
Proven experience in FinTech systems — such as core banking, remittance platforms, or payment processing
Strong understanding of money movement, reconciliation, and transaction workflows
Hands-on experience with RESTful APIs, partner/banking integrations, and automation of financial operations
Solid knowledge of SQL databases and experience with data consistency / reconciliation logic
Experience building and maintaining scalable backend services and API-based architectures
Understanding of security and compliance aspects in financial data exchange
Ability to define and document functional and technical requirements
Experience collaborating with business and operations teams to improve processes
Excellent communication skills and a proactive approach to solving business and technical challenges
English — B2+

Responsibilities

Develop and maintain backend services in C#
Build integrations with partner and banking APIs
Automate internal operations and reconciliation processes
Contribute to functional and technical requirements definition
Collaborate closely with business and operations teams to optimize financial workflows

We offer

A competitive, market-aligned salary.
Professional growth opportunities within a fast-growing international company.
A collaborative and dynamic environment with direct impact in the fight against financial crime.
Access to innovative technologies and regulatory practices.
A clear path for career progression with increasing responsibilities.