Senior Backend Engineer – .NET (DevOps oriented) - Remote
At Q-tech, we're partnering with a well‐established fintech company that develops advanced banking‐connectivity and cash‐management solutions for large enterprises and financial institutions across more than 15 countries. We are currently looking for a Senior Backend Engineer with a strong ownership mindset to drive the evolution of their core platform.
The product is B2B, highly critical, fully audited, and directly connected to international banks. They are looking for someone who combines solid .NET backend expertise with real‐world experience in Azure, DevOps, and Infrastructure as Code, and who is comfortable working in hybrid environments (cloud + on‐prem infrastructures for banking clients).
What you'll do
* Design and implement backend services in C# / .NET (ASP.NET Core) with a focus on reliability, scalability, and best engineering practices.
* Define versioned and stable APIs following schema‐first models to ensure long‐term compatibility and traceability.
* Design and maintain data models, audit models, and key event‐driven flows for reporting and regulatory compliance.
* Apply critical backend patterns and engineering standards.
* Contribute to distributed systems with asynchronous processing and messaging.
* Work closely with DevOps to ensure consistent and reproducible environments.
* Participate in the design and maintenance of Azure infrastructure using Infrastructure as Code .
* Provide L3 support for on‐prem banking environments (root‐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.