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Fullstack Developer - .NET, React (Integrations)
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Offer summary

(Summary generated by AI based on the full job description)

The project involves system integration and ERP implementation support using C#/.NET Framework 4.8, Azure Integration Services, React, and Microsoft SQL Server. Responsibilities include backend development in a Microsoft environment and managing both on-premises and cloud workloads. Frontend work with ASP.NET and React is a smaller part of the scope. The team works in a Scandinavian culture offering health and sports benefits.

newyou can start ASAP

Fullstack Developer - .NET, React (Integrations)

Company: B3 CONSULTING POLAND sp. z o.o.

from: 15 June 2026
to: 15 July 2026
salary not specifiedB2B contract (full-time)
Salary details
basic salary
Offer parameters
level:mid • senior
working mode:remote
Warszawa, Śródmieście
Warszawa, ŚródmieścieAleje Jerozolimskie 44View on map

Requirements

Expected technologies

C#
.NET
Windows Server
React
Microsoft SQL Server

Optional technologies

ASP.NET

Our requirements

  • C# / .NET - backend development, including .NET Framework 4.8 for on-prem components running on Windows Server
  • React - frontend development
  • Azure - cloud development and Azure Integration Services
  • Experience with system integrations (ERP or enterprise system integrations)
  • Microsoft SQL Server (MSSQL) and on-prem Windows Server experience
  • English - fluent
  • Ability to work in Poland (citizenship, residence permit, visa, etc.)

Optional

  • ASP.NET - web interface / web application (only if required)
  • Familiarity with ERP systems and their integration patterns

Your responsibilities

System integration in a Microsoft environment - backend development in C#/.NET, working with Azure Integration Services, handling both on-prem components (.NET Framework 4.8, Windows Server) and cloud workloads on Azure
ERP implementation support - integrating the client's existing systems with a new ERP platform, and managing how the ERP integration impacts other integrations already in place across the organisation
Application development and maintenance in the Microsoft stack - working with Microsoft SQL Server, ASP.NET (if a web interface is required), and React (frontend, a smaller part of the scope)

About the project

Looking for your next challenge as a Fullstack Developer (.NET, React)? We may have the right opportunity for you.

Division of working time

  • 70%
    backend
  • 30%
    frontend

This is how we organize our work

This is how we work

in houseyou focus on a single project at a timeyou have influence on the technological solutions appliedscrumkanban
Company

Development opportunities we offer

  • substantive support from technological leaders

What we offer

  • Pracę w skandynawskiej kulturze opartej o logikę i dialog.
  • Benefity w obszarze zdrowia i sportu dopasowane do potrzeb.
  • Speed Coaching, krótkie sesje, które dają nowe perspektywy i rozwiązania.
  • Treningi sportowe, wewnętrzna drużyna, wspólne zawody.
  • Imprezy integracyjne i spotkania rozwojowe.

Benefits

  • sharing the costs of sports activities
  • private medical care
  • sharing the costs of foreign language classes
  • sharing the costs of professional training & courses
  • flexible working time
  • integration events
  • corporate sports team
  • corporate library
  • video games at work
  • coffee / tea
  • leisure zone
  • christmas gifts
  • birthday celebration
  • employee referral program
  • charity initiatives

B3 CONSULTING POLAND sp. z o.o.

Jesteśmy częścią międzynarodowej organizacji notowanej na NASDAQ w Sztokholmie, działającej w 11 krajach. W Polsce mamy pełną autonomię. Sami wybieramy technologie, procesy i sposób pracy, zachowując najwyższe standardy.
Realizujemy różnorodne projekty IT w Polsce i globalnie, w wielu obszarach i technologiach, co pozwala rozwijać kompetencje i zdobywać doświadczenie dopasowane do Twoich ambicji.
Naszą współpracę opieramy na filozofii CARE. Rozumiemy ją jako odpowiedzialny dobór projektów, transparentną współpracę oraz długofalowe podejście do rozwoju.
Fullstack Developer - .NET, React (Integrations)
I apply to:
B3 CONSULTING POLAND sp. z o.o.
Warszawa, Śródmieście
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