Senior Backend Engineer (.NET / Python / Azure)

About Gramian

Gramian Consultancy is a boutique consultancy specializing in IT professional services and engineering talent solutions. With a strong background in software engineering and leadership, we help companies build high-performing teams by matching them with professionals who truly fit their needs.

About the Role

Our client is a Big4 Consultancy group that works with leading financial institutions onAI-driven transformation, automation, advanced analytics, and financial crime prevention. Their are building a production-gradeAI-assisted KYC / Customer Due Diligence platformfor an international insurance environment.

We are looking for an experiencedBackend / Full-Stack Engineerto build the services connecting the AI-driven CDD platform with enterprise systems. The role requires strong hands-on experience acrossC#/.NET and Python, with a focus on APIs, enterprise integrations, asynchronous workflows, containerization, Azure DevOps, and production reliability.

CONTRACT: B2B or B2C contract

COMMITMENT:Full-time, 3-4 months contract with possibility of extension or getting on new projects

LOCATIONS: Remote, EU-based candidates

START: ASAP

PROCESS: Initial qualification followed by client interviews

Responsibilities

• Buildmiddleware APIsconnecting enterprise applications, data platforms, and legacy systems.
• Develop and maintainASP.NET Core Web APIsand Python services.
• Extend AI-driven service modules and connector frameworks.
• Implement reliableasynchronous workflows, callbacks, retries, and safe write-back mechanisms.
• Integrate with REST APIs, messaging systems, queues, databases, and enterprise platforms.
• Package and deploy services usingDockerand CI/CD pipelines.
• Support deployments to Azure / Databricks-based environments.
• Write and maintainunit and integration tests.
• Troubleshoot issues found during testing and in production.
• Contribute to a business-critical platform where uptime, speed, and correct results are essential

Requirements

• Strong hands-on experience withC# / .NET and ASP.NET Core Web APIs.
• Practical experience withPython, ideally FastAPI or a comparable framework.
• Experience building and integratingREST APIsand enterprise services.
• Experience withmessaging / queues and asynchronous integration patterns.
• Strong experience withDocker, Git, and Azure DevOps CI/CD.
• Experience writingunit and integration testsfor production services.
• Ability to work across modern cloud services and legacy enterprise systems.
• Fluent English and ability to work remotely within the EU.