At Vortech PCI Group, we are looking for a Senior .NET Backend Engineer to join an international project in the financial sector, focused on developing a new Electronic Trading platform within the Fixed Income domain.

This is a greenfield project, involving the design and development of scalable, high-performance backend solutions using .NET and AWS.

We are looking for a hands-on senior engineer with strong experience in C#, microservices, distributed systems, asynchronous programming and event-driven architectures.

RESPONSIBILITIES

- Design, develop and maintain backend services using C#, .NET Core and ASP.NET Core.
- Build scalable REST APIs and microservices-based architectures.
- Develop distributed systems and event-driven integrations using messaging technologies.
- Implement multithreading, concurrency and asynchronous programming solutions.
- Optimise application performance, scalability and reliability.
- Work with SQL and NoSQL databases.
- Apply Clean Architecture, SOLID principles and software engineering best practices.
- Implement automated testing and contribute to CI/CD processes.
- Troubleshoot production issues and collaborate with international technical teams.

REQUIREMENTS

- 5+ years of professional software development experience, with strong expertise in C# and .NET.
- Solid experience with .NET Core, ASP.NET Core and REST APIs.
- Proven experience with microservices and distributed systems.
- Strong knowledge of multithreading, asynchronous programming and concurrency.
- Experience with event-driven architectures and messaging technologies such as RabbitMQ, TIBCO, SignalR or equivalent.
- Experience with SQL and NoSQL databases.
- Knowledge of SOLID principles, Clean Architecture and design patterns.
- Experience with Docker,



automated testing and CI/CD pipelines.
- Experience supporting and troubleshooting applications in production.
- Experience working in Agile environments.
- Advanced English.

NICE TO HAVE

- Experience in Financial Services, Fixed Income or Electronic Trading.
- Knowledge of trading platforms, pricing systems or RFQ workflows.
- Experience with AWS.
- Knowledge of Infrastructure as Code (IaC) and observability tools.
- Experience with JavaScript and SPA frameworks.

WORKING CONDITIONS

- Location: Spain, Portugal, Poland or United Kingdom.
- Project: International greenfield Electronic Trading platform.
- Working language: English.

WHAT WE OFFER

- International project within the financial sector.
- Opportunity to build a new trading platform using modern .NET technologies.
- Technically challenging environment focused on distributed systems, scalability and performance.
- Collaboration with experienced international engineering teams.
- Active involvement in technical design and architectural decisions.
- Close support throughout the recruitment process.

INTERESTED?

If you are a Senior .NET Backend Engineer with strong experience in microservices, distributed systems and asynchronous programming, and are interested in an international greenfield project, we'd love to hear from you.

Apply now and let's talk!

Aplicamos los principios de No discriminación e igualdad en todos nuestros procesos de selección. De conformidad con el Reglamento (UE) 2016/679, la Ley Orgánica 3/2018 y demás normativa vigente en materia de protección de datos, le informamos de que sus datos serán tratados por Vortech PCI Group S.L. con la finalidad de participar en procesos de selección. Para ejercer sus derechos de acceso, rectificación, cancelación y oposición, puede escribir a [email protected].

📌 Senior Backend Engineer .NET – Electronic Trading (España)
🏢 Vortech Pci Group
📍 España