Freelance SharePoint Online Developer (React & SPFx)

PwC Polska; Warszawa; Remote; PLN 120,000 - 210,000; Full time

Job summary

PwC Polska is seeking a DevOps Engineer (freelance) to work on SharePoint Online and Microsoft 365 solutions for a public sector client. You will build SPFx components with React and JavaScript, integrate via REST API, Graph API and PnP, and participate in the full software development lifecycle with documentation and quality deliverables.

Strong English, SPFx/React experience, C#/.NET and SQL know-how are required; prior work with European institutions or public sector is a plus.

Qualifications

• Experience delivering software solutions across at least one complete development lifecycle.
• Practical experience with SPFx and React development.
• Strong knowledge of JavaScript and modern client-side development practices.
• Experience with SharePoint REST API, Microsoft Graph API and PnP.
• Experience developing solutions using C#, .NET Framework and SQL.
• Knowledge of SharePoint components such as Web Parts, Event Receivers and Timer Jobs.
• Experience building SharePoint Online solutions integrated with Power Platform.
• Understanding of software architecture concepts and at least one application layer (UI, business logic or data layer).
• Ability to read and understand UML diagrams.
• Experience creating technical documentation.
• Familiarity with secure coding practices and OWASP principles.
• Awareness of security risks including XSS and SQL Injection.
• Strong analytical and problem-solving skills.
• Very good communication skills in English.
• Previous experience with European Institutions/public sector is a plus.
• Willingness to engage as a freelancer under a B2B contract.

Responsibilities

• Developing and maintaining solutions based on SharePoint Online and Microsoft 365 technologies.
• Building custom components using SharePoint Framework (SPFx), React and JavaScript.
• Integrating solutions using SharePoint REST API, Microsoft Graph API and PnP.
• Participating in the full software development lifecycle from requirements through deployment.
• Creating technical documentation and ensuring high-quality deliverables.
• Optimizing applications from performance, security and quality perspectives.
• Providing 2nd and 3rd line support for implemented solutions.
• Collaborating with business and technical stakeholders to design and deliver effective solutions.
• Identifying technical improvements and proposing innovative approaches to business challenges.

Skills

SharePoint

SPFx

React

JavaScript

SharePoint REST API

Microsoft Graph API

PnP

C#

.NET Framework

SQL

Power Platform

UML diagrams

OWASP

English

Tools

SharePoint REST API

Microsoft Graph API

PnP

Job description

PwC Polska is seeking a DevOps Engineer (freelance) to work on SharePoint Online and Microsoft 365 solutions for a public sector client. You will build SPFx components with React and JavaScript, integrate via REST API, Graph API and PnP, and participate in the full software development lifecycle with documentation and quality deliverables.

Strong English, SPFx/React experience, C#/.NET and SQL know-how are required; prior work with European institutions or public sector is a plus.