Senior .NET Engineer (.NET)

Location: 100% remote within Poland

Rate: Up to €35/hour on a B2B contract

Company

Optiveum acts as the recruitment and contracting partner for an international client developing specialized scientific workflow management systems.

What you will do

• Develop and maintain backend services and APIs using .NET and C#.
• Design reliable data access and persistence solutions with MS SQL, relational data models, and queries.
• Contribute to secure, maintainable application architecture.
• Collaborate with product, frontend, and domain colleagues to translate user needs into technical solutions.
• Support testing, code reviews, troubleshooting, continuous improvement, and Azure-based delivery and deployment.

Requirements

• Strong hands-on experience with .NET and C#.
• Solid MS SQL experience, including relational data models and queries.
• Experience developing or operating solutions in Microsoft Azure.
• Fluent English required for a B2B international environment.
• Must be based in Poland.

Nice to have

• Experience with Microsoft Entra ID (Azure Active Directory).
• Experience with GitHub pipelines and CI/CD practices.
• Experience with Vue 3; frontend experience is advantageous but not essential.

Culture & Benefits

• 100% remote work from Poland.
• B2B cooperation agreement signed directly with Optiveum.
• International collaboration with technical, product, frontend, and domain colleagues.