Senior SharePoint Engineer - SPFx/.NET, On-Prem, Warsaw

Inuits; Kraków; On-site; PLN 180,000 - 280,000; Full time

Job summary

Inuits in Warsaw is seeking two Senior SharePoint Developers to advance enterprise SharePoint on-premises applications for a European public institution. You will work with SPFx, React/TypeScript, PnPjs, and .NET Web APIs within a Scrum team hosted in Azure DevOps.

Required: 6+ years IT experience, strong SharePoint on-premises background, English at least B2, and availability to start mid-November 2026. EU citizenship is a plus.

Qualifications

• 6+ years IT experience, including at least 3 years as a Software Developer.
• Proven experience developing enterprise applications on SharePoint on-premises (2019 / Subscription Edition) with SPFx, React/TypeScript and PnPjs.
• Strong experience with .NET/C# Web APIs, IIS and SQL Server.
• Experience with Azure DevOps (Boards, Repos, Pipelines).
• Experience integrating applications with identity providers and external systems (SAML, Entra ID, REST APIs).
• Knowledge of UML and design of data, business logic and UI layers.
• At least one full solution lifecycle in a Scrum environment; ability to lead technical work.

Responsibilities

• Develop and maintain SharePoint on-premises solutions using SPFx, React, TypeScript and PnPjs.
• Build and maintain custom Web APIs in .NET/C# hosted on IIS, with SQL Server.
• Take over existing third-party codebase through code review, refactoring and regression testing.
• Integrate applications with identity and external systems (EU Login, SAML, Entra ID, REST APIs).
• Guide technical work within the team, including code reviews and development standards.
• Produce technical documentation and manage configuration and releases.
• Act as 2nd and 3rd line support.

Skills

SharePoint on-premises

SPFx

React

TypeScript

PnPjs

.NET/C# Web APIs

IIS

SQL Server

Azure DevOps

REST APIs

SAML

Entra ID

UML

Scrum

English (B2)

Education

Bachelor's degree (or 3 years of higher education)

Tools

Azure DevOps

IIS

SQL Server

SPFx

Job description

Inuits in Warsaw is seeking two Senior SharePoint Developers to advance enterprise SharePoint on-premises applications for a European public institution. You will work with SPFx, React/TypeScript, PnPjs, and .NET Web APIs within a Scrum team hosted in Azure DevOps.

Required: 6+ years IT experience, strong SharePoint on-premises background, English at least B2, and availability to start mid-November 2026. EU citizenship is a plus.