Senior .NET Engineer — AI-Powered Backend & APIs

Bonapolia; Warszawa; Presencial; PLN 260.000 - 380.000; Jornada completa

Descripción de la vacante

Bonapolia in Warszawa is seeking a senior backend engineer to design and implement robust APIs using C# and .NET. You will collaborate on data models, cloud infrastructure, and AI-native development to deliver scalable services for sports data analytics.

The role requires hands-on coding, strong ownership, and excellent English communication. You will work closely with product teams to shape technical delivery and ensure code quality and security at scale.

Formación

• Senior-level commercial experience with C#, modern .NET and ASP.NET.
• Experience designing and building APIs, data models and databases.
• Understanding of cloud infrastructure.
• Experience with AI-native engineering, AI coding agents and spec-driven development.
• Ability to work directly in the code when most effective.

Responsabilidades

• Design and build backend services and APIs using C# and .NET.
• Break down business problems, design solutions and create delivery plans with AI coding agents.
• Use AI coding agents to develop, test, refine and submit merge requests.
• Review, validate and improve production code for reliability, security and maintainability.

Conocimientos

Problem breakdown

Ownership

English communication

Herramientas

C#

ASP.NET

.NET

Descripción del empleo

Bonapolia in Warszawa is seeking a senior backend engineer to design and implement robust APIs using C# and .NET. You will collaborate on data models, cloud infrastructure, and AI-native development to deliver scalable services for sports data analytics.

The role requires hands-on coding, strong ownership, and excellent English communication. You will work closely with product teams to shape technical delivery and ensure code quality and security at scale.