Senior .NET Developer: Cloud, APIs, Frontend

Transition Technologies PSC; Polska; Hybrid; PLN 130,000 - 210,000; Full time

Job summary

Transition Technologies PSC in Poland seeks an experienced .NET Developer to design, develop, and maintain web applications, APIs, and services using C# and .NET, with a strong focus on robust software delivery. You will write tests and participate in code reviews, collaborating with QA, DevOps and product teams.

The ideal candidate has deep knowledge of C#, .NET, ASP.NET, SQL databases with ORM frameworks, and frontend experience with Angular or React, plus exposure to cloud platforms and

Qualifications

• Commercial experience as a .NET Developer (Regular or Senior level).
• Strong knowledge of C#, .NET, ASP.NET.
• Experience working with SQL databases and ORM frameworks.
• Understanding of software architecture designs and data modeling.
• Experience maintaining production systems.
• Communicative English (B2 level or higher).

Responsibilities

• Design, develop, and maintain web applications (ASP.NET), APIs, and services using C# and .NET.
• Write and maintain automated unit and integration tests (xUnit, NUnit).
• Participate in code reviews and architectural discussions.
• Collaborate with QA, DevOps, and product teams.

Skills

C#

.NET

ASP.NET

Web development

Unit testing

Code reviews

Frontend experience

SQL databases

ORM frameworks

Tools

Azure

AWS

Docker

Kubernetes

CI/CD pipelines

xUnit

NUnit

Angular

React

Podman

Job description

Transition Technologies PSC in Poland seeks an experienced .NET Developer to design, develop, and maintain web applications, APIs, and services using C# and .NET, with a strong focus on robust software delivery. You will write tests and participate in code reviews, collaborating with QA, DevOps and product teams.

The ideal candidate has deep knowledge of C#, .NET, ASP.NET, SQL databases with ORM frameworks, and frontend experience with Angular or React, plus exposure to cloud platforms and