At Hays, we are partnering with one of the world's leading international financial institutions , recognized for its global presence in corporate and investment banking. The company operates in highly technological environments and plays an active role in strategic initiatives related to financial markets, data management, application architecture, and analytical platforms that support business decision-making.

We are currently looking for a Senior .NET Developer / Solution Architect specialized in INTEX and Structured Finance to join a strategic project focused on the modernization of financial applications and the evolution of the organization's data architecture.

We are seeking a professional with hands-on experience in the INTEX Platform , accustomed to working within complex architectures, enterprise integrations, and large-scale financial data environments.

The role will be responsible for assessing the current architecture, leading modernization initiatives, and defining solutions that improve scalability, performance, and maintainability across the technology ecosystem.

In addition, the successful candidate will play a key role in the separation of the PSI database from the ARDA platform, ensuring data integrity and minimizing business disruption throughout the transformation process.

What will your responsibilities be?

- Analyze and redesign the current INTEX architecture, identifying opportunities to improve scalability, performance, and maintainability.
- Design and implement integrations between INTEX and enterprise systems, APIs, databases, market data providers, and analytics platforms.
- Lead architecture reviews, documenting data flows, dependencies, and integration patterns.
- Optimize automation processes, data ingestion, and overall platform performance.
- Contribute to defining the future INTEX technology roadmap and platform evolution.
- Lead the separation of the PSI database from the ARDA platform.




- Design and execute migration strategies while ensuring data integrity and availability.
- Coordinate activities with business, infrastructure, architecture, and development teams.
- Drive technology modernization and continuous improvement initiatives.
- Participate in application support, incident management, troubleshooting, and production stability activities.

What are we looking for?

- Strong experience as a .NET Developer working with C# .
- Hands-on experience with ASP.NET, APIs, web applications, and backend services .
- Advanced knowledge of Microsoft SQL Server , including T-SQL, stored procedures, database analysis, and optimization.
- Practical experience working with the INTEX platform.
- Knowledge of Structured Finance products (ABS, RMBS, CMBS, CLO, CDO, and MBS).
- Experience with enterprise integrations, ETL processes, APIs, database synchronization, and complex architectures.
- Experience supporting business-critical applications, resolving incidents, and enhancing production systems.
- Ability to collaborate effectively with both business users and technology teams.
- Strong analytical mindset focused on data quality, performance, and operational efficiency.
- Experience with fixed-income platforms, pricing, market data, reporting, and position management.

Nice to have

- Experience in enterprise architecture and modernization of financial platforms.
- Experience leading complex database migrations and separation initiatives.
- Knowledge of corporate and investment banking environments and financial markets.
- Experience defining target-state architectures and technology transformation strategies.

What do we offer?

- An international project within a leading general financial institution.
- 100% remote working model.
- Working hours aligned with the U.S. East Coast ( 9:00 AM - 6:00 PM EST ).
- Permanent contract with Hays.
- Initial contract duration of 6 months .
- The opportunity to participate in a strategic technology transformation and modernization project.
- Collaboration with global architecture, business, and engineering teams.

📌 Senior .NET Developer / Solution Architect in INTEX and Structured Finance (España)
🏢 Hays
📍 España