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Senior Software Engineer

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Gdańsk

Wrocław

Poznań

Szczecin

2 days ago

In short

Senior Software Engineer (Backend First Full Stack) in Gdańsk. Develop APIs, business logic, integrations, data access on Azure. Tech: .

NET 9, C# 13, React 18, TS, SQL Server, MongoDB, Redis, Azure. Hybrid work.

Keywords

.NET C# React TypeScript SQL Server Azure APIs MongoDB Redis

AI-written summary based on the listing content.

We are looking for a Senior Software Engineer with a strong back-end-first full stack profile to join an Azure-hosted platform.

Your main focus will be backend development – APIs, business logic, integrations, data access and asynchronous processing – with the opportunity to contribute to the React / TypeScript frontend when needed.

You will work with .

NET 9, C# 13, React 18, TypeScript, SQL Server, MongoDB, Redis, Azure Storage Queues, SignalR and Ocelot.

Requirements:

Strong production experience with .

NET / C#Experience with SQL Server or a similar relational database

Hands-on experience with APIs, integrations and asynchronous processing
Experience with Azure
Ability to contribute across backend and React / Type
Script
Experience owning features from design through production
Strong communication and collaboration skillsNice to have: MongoDB, Redis, SignalR, Ocelot, regulated/finance/tax environments, or mentoring experience.

Tax technology experience is not required – you should be comfortable learning complex business rules and turning them into reliable software.