Lead/Senior SharePoint Developer

We are seeking a Lead/Senior SharePoint Developer with 6+ years of professional experience across both SharePoint 2019 (on-premises) and SharePoint Online (SPO) to drive the technical architecture, backend integration, migration, and deployment of our customized "Connect 22" intranet portal. In this role, you must bring a proven track record of successfully executing end-to-end intranet migration projects from legacy environments to modern SharePoint Online. Using SharePoint Online as a headless CMS, you will analyze our current environment to design the optimal cloud backend structure (SPO Lists, Libraries, and Sites) to support our custom React layouts. You will be responsible for wrapping custom React UI components into deployable SPFx Web Parts (v1.19+) and establishing secure, read-only integrations with our active enterprise core platforms (such as ERP and K2 systems) .Additionally, you will build an in-webpart content management system (CRUD) using sliding Fluent UI panels, execute the end-to-end migration of legacy content (such as news, corporate stories, documents, and lists), and modernize legacy SharePoint workflows into modern, cloud-native Power Automate flows. Key Responsibilities Migration Strategy & Execution: Act as the technical lead for migrating the legacy SharePoint 2019 environment to SharePoint Online. Plan, structure, and execute the migration of historical intranet content, including news archives, corporate stories, documents, lists, web applications , site collections and permissions, ensuring all legacy data maps correctly to the new modern designs. Environment Analysis & Architecture: Audit the existing SharePoint 2019 environment to assess data structures, page layouts, workflows, and permissions. Define and implement the optimal modern site structure, site collections, and metadata taxonomy in SharePoint Online. Read-Only System Integration (ERP & K2): Establish secure, read-only connections to active enterprise platforms, including ERP suites and K2 environments [1]. Fetch data via standard REST APIs, JSON endpoints, or secure database views to display live operational data inside SPFx custom components. Hybrid Security Implementation: Ensure all data-fetching integrations are completely secure and comply with corporate security standards. Workflow Modernization (SPO 2010 to Power Automate): Analyze existing legacy SharePoint 2019 workflows (including 2010 engine workflows), dissect their business logic, and completely re-engineer and migrate them into secure, efficient Power Automate cloud flows. SPFx Web Part Architecture: Wrap modular React functional components into production-ready modern SPFx Web Parts (v1.19+) deployed to the SharePoint Online App Catalog. Headless SharePoint & APIs: Design SharePoint Online list schemas, custom columns, and document libraries. Write efficient data-fetching classes using PnP JS (@pnp/sp) and Microsoft Graph APIs. In-WebPart Content Editing (CRUD): Build secure, slide-out administration drawers (Fluent UI Panels) that permit authorized business users to add, edit, and delete list items (news, events, links) and upload media without interacting with the SharePoint Online backend lists. Complex Data Transformation: Design the recursion and hierarchical JSON data parsing necessary to turn flat SharePoint Online list data into interactive components like organizational charts. Requirements 6+ years of core, hands-on experience in SharePoint 2019 (on-premises) and modern SharePoint Online (SPO) / SPFx (v1.16+) development. Proven track record of leading and executing complex SharePoint migration projects from on-premises (SharePoint 2019/2016) to SharePoint Online. Expert-level experience rebuilding legacy SharePoint Workflows in Power Automate, utilizing cloud flows, automated/scheduled triggers, custom connectors, and approval loops. Proven experience fetching and consuming data from external REST APIs, JSON services, or direct SQL databases to display inside SPFx web parts. Strong understanding of standard API security, including token authentication (Bearer/OAuth 2.0), API Key management, and secure web service integrations [1]. Expert-level proficiency in React, TypeScript, and React Hooks. In-depth expertise in PnP JS (@pnp/sp) and PnP SPFx React Controls (such as FilePickers, PeoplePickers, and RichText editors) within SharePoint Online. Proven experience debugging custom code inside native mobile WebView containers (specifically the SharePoint Mobile App). Show more Show less