Senior Backend Engineer – .

NET / Azure | Fintech B2BAt Q-tech, we're partnering with a well?established fintech company that develops advanced banking?connectivity and cash?We are currently looking for a Senior Backend Engineer with a strong ownership mindset to drive the evolution of their core platform.NET backend expertise with real?world experience in Azure, DevOps, and Infrastructure as Code, and who is comfortable working in hybrid environments (cloud + on?What you'll doDesign and implement backend services in C# / .

NET (ASP.NET Core) with a focus on reliability, scalability, and best engineering practices.Design and maintain data models, audit models, and key event?Apply critical backend patterns and engineering standards.Work closely with DevOps to ensure consistent and reproducible environments.Participate in the design and maintenance of Azure infrastructure using Infrastructure as Code.cause analysis, hotfixes, reproducibility).

Optimize SQL performance, diagnose queries, read execution plans, and propose performance improvements.Collaborate closely with QA, Security,



DevOps, and Data teams to ensure a robust and auditable product.What they're looking for7+ years of experience as a Backend Engineer.Deep expertise in C#/.

NET, SQL, and distributed architectures.on experience with Microsoft Azure and IaC in production (mandatory).

Hands?on experience with Docker, performance tuning, and advanced troubleshooting.Comfortable working in hybrid cloud/on?High level of English is essential.TDD / contract testing at scale.Experience with messaging/queueing systems (Azure Service Bus, RabbitMQ, Kafka).

Familiarity with Azure Functions and serverless architectures.NET (ASP.NET Core), SQL, Azure, IaC, Docker, Azure Functions, Azure Service Bus, messaging patterns, distributed systems, monitoring & observability.What's offeredPermanent contract.Hybrid model (1/2 days) in Barcelona: flexibility + modern office.Senior, high?verano, y ofrecemos protegido médico.

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📌 Senior Software Engineer (.Net, C#, (Barcelona)
🏢 Q-Tech
📍 Barcelona