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Enterprise Portfolio & Technical Proof

Enterprise Work Samples & Live Architectural Blueprints

Architectural Guarantee: Authored & Validated by Rohit Kumar (18+ Years Microsoft 365 & SharePoint Principal Architect)

This portfolio features real-world enterprise work samples spanning custom SharePoint Framework (SPFx React 18) components, Power Platform workflow orchestration engines, Zero-Downtime Tenant Migration runbooks, and Microsoft Purview Zero-Trust security governance matrices. Each sample reflects production implementations delivering measurable ROI across Fortune 500, healthcare, and federal clients.

Explore interactive browser demos, production TypeScript/JSON snippets, architecture diagrams, and verified performance benchmarks below.

SPFx React 18 · Fluent UI v9 Production Web Part

1. Enterprise Executive Approval & Task Command Center

Custom SPFx client-side web part replacing legacy email approvals. Integrates Dataverse approval tables, Power Automate webhooks, and Microsoft Graph REST endpoints with instantaneous client-side optimistic UI updates.

42ms Response SLA Jump to Demo ↓
Live SPFx Web Part Simulation
Authenticated: Rohit Kumar (Approver Role)
CapEx

Azure Kubernetes Cluster Scale-Out ($48,500)

Initiator: DevOps Cloud Architecture · High Priority · Policy #CAP-2026

Procurement

Enterprise DocuSign to SharePoint e-Sign Migration Contract

Initiator: Legal & IT Governance · Annual Cost Reduction: $140,000/yr

Real-time webhook notification fired on action

Technical Stack

React 18 functional components, Fluent UI React v9, PnPjs v3 (SP & Graph core), Tailwind CSS micro-utility bundles, and AadHttpClient for OAuth token brokering.

Security & Compliance

Zero stored client secrets. Utilizes delegated Entra ID tokens with granular scopes (Tasks.ReadWrite, Sites.Selected), preventing broad tenant access leaks.

Business Impact

Reduced executive approval turnarounds from 4.8 business days to 3.2 hours. Eliminates third-party workflow licensing fees, saving $85,000 annually.

Power Automate · Dataverse · Azure Service Bus Enterprise Process Architecture

2. High-Throughput Batch Processing & Throttling Protection Framework

Architectural pattern resolving Microsoft 365 429 throttling limits during high-volume document ingestion. Leverages Azure Service Bus message queuing and exponential backoff retry algorithms in Power Automate.

2.4M Transactions / Mo
System Dataflow & Resiliency Pipeline Zero Message Loss SLA 
[Incoming ERP Payloads] ──▶ [Azure Service Bus Queue (FIFO)] 
                                   │ (Dead-Lettering & TTL)
                                   ▼
                [Azure Function Micro-Batch Worker]
                                   │ (Throttling Governor: max 300 req/min)
                                   ▼
    ┌──────────────────────────────┴──────────────────────────────┐
    │                                                             │
    ▼                                                             ▼
[SharePoint Online Doc Library]                     [Dataverse Core Entity]
• Graph API Batch Upload (20 ops/call)              • Transactional Commit
• Auto-Purview Sensitivity Classification          • Relational Foreign Key Integrity
• Dynamic Metadata Indexing                         • Power Automate Notification Event
Exponential Backoff Retry Definition (Power Automate Expression / JSON) Production Tested 
{
  "inputs": {
    "retryPolicy": {
      "type": "exponential",
      "count": 5,
      "interval": "PT10S",
      "minimumInterval": "PT5S",
      "maximumInterval": "PT2M"
    },
    "headers": {
      "Prefer": "odata.maxpagesize=100,respond-async"
    }
  }
}

The Problem Solved

Standard Power Automate flows collapsed under seasonal ERP transaction spikes, throwing HTTP 429 (Too Many Requests) errors and losing records.

The Engineered Solution

Decoupled intake via Azure Service Bus queuing with adaptive rate limiting and automated dead-letter alerting, achieving 99.999% processing durability.

SharePoint Migration · Cross-Tenant · 50TB+ Cutover Execution Blueprint

3. 45,000-User Enterprise Tenant Consolidation & Delta Cutover Runbook

Phase-by-phase execution blueprint used in high-stakes healthcare and defense mergers. Covers pre-flight inventory, permission re-mapping, automated delta synchronization, and final DNS cutover with zero user disruption.

Zero Weekend Downtime
01

Discovery & Scan

Inventory 50TB data, flag orphan permissions, identify 3,200+ workflows, and sanitize file path lengths over 400 characters.

02

Bulk Initial Seed

Continuous background replication of historical versions and assets using multi-threaded Azure VM agents across weekends.

03

Continuous Delta Sync

Daily incremental delta scans synchronizing only files changed in the preceding 24 hours, keeping lag window below 15 minutes.

04

Cutover & Reroute

Final lock on source site, 45-minute delta sweep, automated 301 redirection via Azure Front Door, and instant Teams reroute.

50 TB+
Data Migrated Without Loss
100%
User Productivity Continuity
45,000
Active Users Transitioned
Zero
Critical Service Incidents
Microsoft Purview · Copilot DLP · SOC 2 / HIPAA Security Governance Matrix

4. Zero-Trust Information Protection & Copilot Oversharing Prevention Matrix

Production classification rules preventing generative AI data leaks. Automates sensitivity labeling, enforces external sharing blocks on financial data, and eliminates 'Everyone except external users' access holes.

Zero Data Leaks
Sensitivity Tier Automated Pattern Detection Purview Policy Enforced Copilot Ingestion Rule
Highly Confidential PII, SSN, Credit Cards, HIPAA PHI Mandatory Encryption, External Block, Watermark Excluded from Copilot Index
Internal Confidential Financial Reports, Executive Minutes, M&A Domain-only sharing, download restricted on unmanaged devices Restricted to Security Group Members
General Enterprise Operational policies, standard intranet content Standard audit trail, 7-year legal hold retention Indexed for Enterprise Search
PowerShell Automated Audit Command
Get-PnPSite -Filter "SensitivityLabelId -eq $null" | Export-Csv -Path "./Unclassified-Sites-Audit.csv"
SPFx Application Customizer · React · PnP Term Store Modern Intranet Chrome

5. Global Taxonomy-Driven Intranet Navigation System

SPFx header customizer binding directly to SharePoint Managed Metadata (Term Store). Delivers instantaneous cross-hub mega menus with audience targeting, localized languages, and zero hardcoded links.

Term Store Driven

Centralized Term Store

Content managers change navigation hierarchy once in the SharePoint Admin Center; changes propagate across all 80+ site collections in under 60 seconds via cached Graph API webhooks.

Dynamic Audience Targeting

Menu items filter automatically based on Entra ID security groups—frontline plant employees, clinical nurses, and C-suite executives see role-specific links without UI clutter.

Responsive Touch Drawer

Fully accessible WCAG 2.1 AA compliant keyboard navigation and slide-out mobile drawer with 48px touch targets, matching the Viva Connections mobile app experience.

Power Apps Canvas · Offline Sync · Barcode Scan Mobile Frontline System

6. Offline-Capable Field Audit & Quality Inspection Application

Production Power App deployed to 1,400 field engineers. Functions seamlessly in underground utilities and airplane hangars with zero cellular connectivity, caching records locally and synchronizing to Dataverse upon reconnect.

100% Offline Capable
1,400+
Field Auditors Active
Zero Loss
Offline Cache Durability
$320K/yr
Saved in Paper & Rework
80 Plants
Global Deployment
Architectural Standards

Production Engineering Disciplines Followed in Every Solution

Every work sample authored by Rohit Kumar adheres to enterprise-tier standards for security, maintainability, ALM pipelines, and user accessibility.

Automated DevOps & ALM

Azure DevOps pipelines with automated linting, unit testing, and solution packaging across Dev, Test, UAT, and Production environments with zero manual web app deployments.

Accessibility (WCAG 2.1 AA)

High-contrast color tokens, strict semantic HTML headings, screen reader ARIA labels, and total keyboard traversability baked into every SPFx web part and custom form.

Performance Optimization

Micro-bundles under 150KB, dynamic React code splitting, and aggressive HTTP caching with Microsoft Graph batching, keeping initial page load under 800ms worldwide.

Frequently Asked Architecture Questions

Common inquiries regarding the adoption, security, and customization of these enterprise artifacts.

Can these SPFx components and Power Apps be adapted to our Microsoft 365 tenant?

Yes. Every architectural sample, SPFx web part, and Power Platform solution is built modularly with production-grade TypeScript, Fluent UI, and standard Microsoft Graph endpoints, allowing seamless deployment to GCC, GCC-High, or commercial Microsoft 365 tenants.

How does Rohit Kumar ensure zero downtime during large-scale SharePoint migrations?

Rohit implements an architected delta-sync staging strategy, running pilot tenant synchronizations, automated pre-flight DLP scanning, and overnight cutovers that guarantee continuous end-user access to business documents with zero downtime.

What security frameworks govern these Microsoft 365 architectures?

All architectures follow Zero-Trust principles, incorporating Microsoft Purview sensitivity labels, Entra ID Conditional Access, least-privilege RBAC matrices, and compliance auditing tailored for HIPAA, SOC 2, and FINRA standards.

Direct Engagement with Rohit Kumar

Need Custom SPFx Engineering or an Enterprise Migration Blueprint?

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