Senior SharePoint Developer (M/F)

Arche Consulting Sp. z o.o.; Warszawa; On-site; PLN 180,000 - 320,000; Full time

Job summary

Arche Consulting Sp. z o.o. is seeking a skilled SharePoint developer to design, build and maintain enterprise SPFx applications in a dynamic team.

You will work with React, TypeScript and PnPjs, and you will create robust Web APIs using .NET/C#, IIS and SQL Server. You will lead development efforts, implement coding standards, and translate business needs into effective technical solutions while collaborating with analysts, testers and business owners to refine requirements and ensure quality

Qualifications

• Proven experience with SharePoint On-Premises (2019).
• Strong knowledge of SPFx, React, TypeScript and PnPjs.
• Experience with .NET/C#, Web APIs, IIS and SQL Server.
• Experience maintaining and enhancing existing applications with refactoring.
• Knowledge of REST APIs, authentication protocols (SAML) and identity management.
• Familiarity with Azure DevOps, Git, pipelines and Scrum.
• Ability to translate business needs into technical designs and estimates.
• Experience with documentation, testing and QA.
• Strong communication and cross-functional collaboration skills.

Responsibilities

• Design, develop and maintain enterprise SharePoint applications using SPFx, React, TypeScript and PnPjs.
• Develop custom Web APIs using .NET/C#, IIS and SQL Server.
• Lead development teams and establish coding standards and best practices.
• Translate business and technical requirements into effective software solutions.
• Review and refactor existing code and manage technical debt.
• Integrate applications with external systems, REST APIs and identity providers (SAML, Entra ID, EU Login).
• Optimize application performance, security and code quality.
• Collaborate with business owners, analysts and testers on requirements, backlog refinement and acceptance criteria.
• Contribute to testing, QA, deployment, release and change management.
• Prepare technical documentation, develop testing tools and provide second/third-line support.
• Support knowledge transfer and ensure smooth transition from the current contractor.

Skills

SPFx

React

TypeScript

PnPjs

REST APIs

SAML

Entra ID

EU Login

Software design

Code reviews

Tools

Azure DevOps

Git

Pipelines

Scrum

Job description

Our client is a global IT services and consulting company specializing in digital transformation, cloud, cybersecurity, and managed services for enterprise clients.

Responsibilities

design, develop and maintain enterprise SharePoint applications using SPFx, React, TypeScript and PnPjs,\

develop custom Web APIs using .NET/C#, IIS and SQL Server,

lead development teams and establish coding standards and best practices,

translate business and technical requirements into effective software solutions,

review and refactor existing code, manage technical debt and perform regression testing,

integrate applications with external systems, REST APIs and identity providers, including SAML, Microsoft Entra ID and EU Login,

optimize application performance, security and code quality,

collaborate with business owners, analysts and testers on requirements, backlog refinement, estimation and acceptance criteria,

contribute to testing, quality assurance, deployment, release and change management,

prepare technical documentation, develop testing tools and provide second- and third-line support,

support knowledge transfer and ensure a smooth transition from the current contractor.

Requirements

proven experience with SharePoint On-Premises (2019 / Subscription Edition),

strong knowledge of SPFx, React, TypeScript and PnPjs,

experience with .NET/C#, Web APIs, IIS and SQL Server,

experience maintaining and enhancing existing applications, including code reviews, refactoring and performance optimization,

knowledge of REST APIs, authentication protocols (SAML) and identity management solutions such as Microsoft Entra ID,

familiarity with Azure DevOps, Git, pull requests, Pipelines and Scrum,

ability to translate business needs into technical designs, estimate development effort and propose appropriate solutions,

experience in technical documentation, testing and software quality assurance,

strong communication skills and the ability to collaborate with business and technical teams,