Remote .NET Backend Engineer — APIs & Async Systems

ipracujzdalnie.pl; Warszawa; Remote; PLN 120,000 - 180,000; Full time

Benefits offered by this job

Attractive salary

Fully remote option

Professional development

Job summary

TeamQuest, a rapidly growing HR consulting firm in Poland, seeks a Backend .Net Developer to join our team across Poland, including Warszawa and other major cities. You will design and implement integrations with external systems, manage asynchronous data exchange, and work with OpenAPI contracts in a collaborative, client-facing setting.

The role involves Docker, CI/CD, and OpenAPI, with opportunities for professional growth and the possibility of fully remote work.

Qualifications

• 3–4 years of experience in a similar role.
• Strong knowledge of C# and .NET (ASP.NET Core, .NET 8+).
• Experience with SOAP/XML integrations and REST/OpenAI integrations.
• Asynchronous architecture with message queues (RabbitMQ).
• Good database knowledge and domain model mapping.
• Proficient with Docker and CI/CD.
• Git in gitflow model.
• English reading of technical documentation.
• Communicative and able to collaborate with client-side personnel.
• Ability to work independently.

Responsibilities

• Design integrations with external systems (SOAP/XML and REST/JSON).
• Maintain asynchronous data exchange (queues, callbacks, idempotency).
• Generate API clients from OpenAPI contracts and adapt to changes.
• Build and maintain mocks of external systems for testing environments.
• Implement business process logic in a BPMN engine using C#.
• Configure environments (Docker, CI/CD) and assist releases/hotfixes.
• Analyze defects from tests and production; cooperate with analysts/testers.
• Document solutions and share knowledge within the team.

Skills

C# / .NET

Async architecture

Independent worker

Collaborative

Tools

Docker

Git (gitflow)

RabbitMQ

CI/CD

OpenAPI

Job description

TeamQuest, a rapidly growing HR consulting firm in Poland, seeks a Backend .Net Developer to join our team across Poland, including Warszawa and other major cities. You will design and implement integrations with external systems, manage asynchronous data exchange, and work with OpenAPI contracts in a collaborative, client-facing setting.

The role involves Docker, CI/CD, and OpenAPI, with opportunities for professional growth and the possibility of fully remote work.