Junior SharePoint Developer — SPFx, React & .NET

SEIDOR; Województwo mazowieckie; On-site; PLN 60,000 - 85,000; Full time

Job summary

SEIDOR in Warsaw is seeking a Junior Software Developer-Sharepoint to join a team delivering SharePoint-based solutions. You will contribute to the full development lifecycle, implement secure client-side components, and collaborate on requirements analysis, testing and deployment within a dynamic environment.

Ideal candidates have hands-on experience with SPFx, React, JavaScript, and SharePoint data access via PnP and REST APIs, plus a background in C#/.NET and SQL.

Qualifications

• Minimum 2 years of IT-relevant professional experience.
• Minimum 1 year of relevant project experience / similar role.
• Experience with SharePoint Framework (SPFx), React and JavaScript.
• Experience consuming SharePoint data through PnP, SharePoint REST API and Microsoft Graph API.
• Experience developing secure client-side components.
• Experience with server-side development using C#, .NET Framework and SQL, including Web Parts, Event Receivers and Timer Jobs.
• Knowledge and practical application of OWASP / secure coding principles, including prevention of XSS and SQL injection.
• Experience developing SharePoint Online solutions using Power Platform.
• At least one complete solution lifecycle completed.
• Proficiency in at least one of: data layer, business logic layer or UI layer.
• Ability to read UML, follow development/quality standards and document technical solutions effectively.

Responsibilities

• Develop software components and contribute throughout the development lifecycle.
• Participate in requirements analysis, testing, QA, change management and deployment.
• Prototype and propose technical solutions for business and technical needs.
• Optimize software performance, security and quality.
• Produce clear technical documentation.
• Provide 2nd and 3rd line support.
• Perform software testing.

Skills

SPFx

React

JavaScript

PnP

SharePoint REST API

Microsoft Graph API

Secure coding

C#

.NET Framework

SQL

OWASP

Power Platform

Lifecycle

UML

Tools

None

Job description

SEIDOR in Warsaw is seeking a Junior Software Developer-Sharepoint to join a team delivering SharePoint-based solutions. You will contribute to the full development lifecycle, implement secure client-side components, and collaborate on requirements analysis, testing and deployment within a dynamic environment.

Ideal candidates have hands-on experience with SPFx, React, JavaScript, and SharePoint data access via PnP and REST APIs, plus a background in C#/.NET and SQL.