Senior .Net Developer (English+German)
Puławska 2b, Warszawa
Square One Resources
Position: Senior .NET Developer (English & German required)
Start date: September 1, 2025
Duration: Until December 31, 2025 (extension possible)
Location: Remote
Workload: Full-time (100%)
Seniority: Senior
About the role
We are looking for an experienced Senior Backend Developer with strong expertise in .NET technologies and fluent communication skills in both English and German. You will join a cross-functional product team, contributing directly to ongoing client projects. This role requires advanced technical knowledge, strong collaboration skills, and the ability to communicate effectively across distributed teams.
Key Responsibilities
Develop and maintain backend services with .NET / .NET Core and C#, focusing on performance, scalability, and reliability.
Design, build, and extend RESTful APIs and service components in collaboration with client teams.
Contribute to architectural decisions, promote best practices, and ensure clean, testable code.
Participate in code reviews and provide constructive feedback to maintain high engineering standards.
Troubleshoot performance issues and integrate backend services with external systems.
Create and maintain clear technical documentation.
Communicate efficiently with stakeholders in both English and German.
Must-have Skills
.NET / .NET Core, C#
Entity Framework
REST APIs
PowerShell (automation, scripting)
SQL
CI/CD experience with Azure DevOps
Fluent English and German
Nice-to-have
Microservices architecture
RabbitMQ or Azure Service Bus
Elasticsearch
Frontend: AngularJS or Angular 14
Azure Cloud, Docker
Soft Skills
Proactive and independent working style
Strong team player in distributed environments
Excellent communication skills in two languages (EN/DE)
Nasze motto to #OneSquareOne - jeden zespół, wiele talentów. Specjalizujemy się w rekrutacji, naszą misją jest połączenie biznesu z najlepszymi kandydatami i kandydatkami z rynku.