Vortech PCI Group

Backend engineer .NET in billing

In short

Senior Backend Engineer role building a strategic billing project for an international client in the software sector, requiring 6+ years of backend development with C# and .NET (8/9), RESTful APIs, distributed systems, microservices, Docker/Kubernetes, SQL databases and message queues. The job is hybrid in Barcelona, with 2 days per week on-site at Gran Via2. Cloud (Azure), Angular, DDD and SOLID knowledge are a plus.

Description
At Vortech, we continue to grow and are looking to bring on a Senior Backend Engineer specializing in .NET to work on a strategic billing project with one of our international clients in the software sector. We are looking for a profile clearly focused on backend, with solid experience in modern architectures, distributed systems, and engineering best practices.
Requirements
•6+ years of experience in backend development with C# and .NET (modern versions)
•Experience working with .NET 8/9 or recent stable versions
•Design and implementation of robust, scalable RESTful APIs
•Experience in distributed systems and asynchronous communication
•Experience with containerization using Docker and Kubernetes
•Experience working with SQL databases
•Experience with message queues such as RabbitMQ or Service Bus
•Unit testing with xUnit, NUnit, or other equivalent frameworks
•Experience with microservices
•Experience with hexagonal architecture
•Experience in Agile environments
Nice to have
•Knowledge of Angular (occasional collaboration on frontend tasks)
•Experience in Cloud environments (Azure preferred)
•Knowledge of design patterns and SOLID principles
•Experience in domain-driven design (DDD)
•Experience with SDD — Software Design Document
Conditions
•Participation in an international project with a modern technology stack
•A highly technical environment focused on architectural best practices
•Collaboration with senior teams and a strong engineering culture
•Flexible working arrangement (2 days in person at Gran Via2 are required)
•Professional growth plan within Vortech

Stop applying.
Get referred.

$10 in free credits

In just 60 seconds, fully on autopilot — Eraldt's AI agents read your CV, map the roles you fit, find live vacancies and the people who can refer you, write personal emails, and get you referred.

This isn't an application: your CV doesn't go to the company, and we don't promise a referral for this exact role.

Discover who else lands interviews on autopilot