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 aSenior Backend Engineerwith 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 inC# / .

NET (ASP.NET Core)with a focus on reliability, scalability, and best engineering practices.Apply critical backend patterns and engineering standards.cause analysis, hotfixes, reproducibility).

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



and Datateams to ensure a robust and auditable product.What they're looking for7+ years of experience as a Backend Engineer.NET, SQL, and distributed architectures.Hands?on experience withDocker, performance tuning, and advanced troubleshooting.High level of English is essential.TDD / contract testing at scale.Experience with messaging/queueing systems (Azure Service Bus, RabbitMQ, Kafka).

Familiarity withAzure Functionsand 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) inBarcelona : flexibility + modern office.Senior, high?Verano, y ofrecemos confiable médico.

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📌 Senior Software Engineer Fintech, hibrido (Barcelona)
🏢 Q-Tech
📍 Barcelona