Senior C# Engineer - FinTech Remittance and Payment Services Platform

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.

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

Details

Location: Madrid (or relocation to Madrid)

Employment Type: Full-time

Start Date: ASAP

Language Requirements: English B2+

Project Description

A licensed remittance and payment services provider focused on delivering fast, secure, and compliant international transfers.

The company operates within the FinTech domain, serving global remittance corridors and integrating with multiple partners and financial institutions through API-based connectivity.

Requirements / Your Background

• 5+ years of commercial experience in backend development using C# / .NET
• Proven experience in FinTech systems — core banking, remittance platforms, payment processing
• Strong understanding of money movement, reconciliation, and transaction workflows
• Hands-on experience with RESTful APIs, partner/banking integrations, and financial automation
• 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 related to financial data exchange
• Ability to define and document functional and technical requirements
• Experience collaborating with business and operations teams to improve financial processes
• Excellent communication skills and a proactive, problem-solving mindset
• English B2+
  
  
  

Key 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