Summary
✨ AI‑Generated
A growing software solutions provider is seeking a Backend .NET Developer to build integrations between enterprise systems. You will implement REST and SOAP interfaces, maintain asynchronous data exchange, generate API clients from contracts, create test mocks, and implement business workflows in a process engine. The role offers challenging backend engineering work across demanding business domains.
Highlights
Develop backend solutions and integrations for sophisticated business systems serving major clients. Work with modern API standards, asynchronous communication, process automation, and testing environments while solving complex integration challenges across financial and automotive applications.
Description
TeamQuest is a rapidly growing Polish company engaged in the comprehensive HR consulting services, in particular in the recruitment of IT professionals.
Our client develops IT solutions, mainly for prestigious clients in the financial and automotive sectors.
Backend .Net Developer
location: Wrocław, Białystok, Kraków, Warszawa, Łódź, Katowice, Poznań, Rzeszów, Lublin, Gdańsk
Main Responsibilities
Designing and implementing integrations with external systems (SOAP/XML and REST/JSON services), including data model mapping and partner error handling.Maintaining and developing an asynchronous data exchange mechanism (message queues, callbacks, statuses, request idempotency).Generating and updating API clients based on OpenAPI contracts provided by the client; responding to contract version changes.Building and maintaining mocks of external systems for test environments.Implementing business process logic in a BPMN engine (handlers in C#, process variables, signals) and decision rule models.Configuring environments (installation parameters, Docker, CI/CD pipeline), participating in preparing releases and hotfixes.Analyzing defects from business tests and production based on logs, quick fixes, collaborating with client analysts and testers.Documenting solutions and transferring knowledge within the team.
Requirements
Minimum 3-4 years of experience in a similar positionVery good knowledge of C# and .NET (ASP.NET Core, .NET 8 or newer)Practical experience with SOAP / XML integrations, REST/OpenAI integrationsAsynchronous architecture - message queues (RabbitMQ or equivalent), request-callback pattern, idempotency, persistence of exchange stateGood knowledge of databasesMapping of domain modelsDocker and CI/CDGit in gitflow modelEnglish language proficiency for reading technical documentationCommunicative, open to collaboration with client-side personnelAbility to work independently
Good To Have
Experience in the financial/banking industry or in projects for these industries
We Offer
Attractive salaryPossibility of fully remote workReal opportunity for professional developmentPossibility to genuinely influence the shape of projects
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