Senior Backend Engineer .NET - Electronic Trading

Vortech PCI Group S.L.; España; On-site; EUR 65,000 - 90,000; Full time

Job summary

Vortech PCI Group S.L. seeks an experienced backend developer to design, build and maintain scalable services using C#, .NET Core and ASP.NET Core for an international greenfield electronic trading platform.

The role focuses on REST APIs, microservices, distributed systems and event-driven integrations, with emphasis on performance, reliability and CI/CD in a multinational team. English is the working language; location includes Spain and other European sites; you will join a technically

Qualifications

• 5+ years of professional software development with C# and .NET.
• Strong 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.

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.

Skills

C#/.NET

ASP.NET Core

Microservices

REST APIs

Distributed systems

Multithreading

Messaging

SQL/NoSQL

Docker

CI/CD

English

Tools

RabbitMQ

TIBCO

SignalR

Job description

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.

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