Senior.NET Developer

Sigma Software

full-time Warsaw, Masovian Voivodeship Computer Occupations

Posted:

February 28, 2026

Location:

Warsaw, Masovian Voivodeship, Poland

Job Description

                    Job Description

Design, build, and deliver features and projects across C#, .NET Core, and Angular stack
Write clean, maintainable, and well-tested code (unit/integration/e2e)
Take ownership of features from requirements breakdown to deployment
Deploy and monitor services in AWS cloud-native environments
Handle production issues and incidents with accountability
Collaborate with Product, Design, and Engineering teams in Agile practices
Contribute to continuous improvement of systems and processes

Qualifications

5+ years of experience in software development with strong OOP and system design skills
Solid hands-on experience with .NET (C#) and Angular
Understanding of software testing concepts and practices
Expertise in cloud-native and DevOps practices (CI/CD, automation, monitoring)
Experience with relational and NoSQL databases
Knowledge of non-functio...
                

Apply for this Job

Submit your application for the Senior.NET Developer position at Sigma Software.

Apply Now Save for Later

Job Overview

Job Type: full-time

Location: Warsaw, Poland

Posted: February 28, 2026

Deadline: April 09, 2026