Available for new opportunities

Rajaas Tahir Cloud & AI Architect

I design systems — entire cloud platforms, not just resources. Security, resilience, cost, and performance, all as one connected architecture on Azure.

10+ Years Experience
26x Certified
70%+ Cloud Cost Reduction
153+ Projects
az-architect ~ cloud-platform
$ az architect profile
Name : Rajaas Tahir
Role : Cloud & AI Solution Architect
Base : Toronto, Canada
Stack : Azure · Terraform · Bicep · Azure DevOps · Docker
$ az architect areas --list
[architecture] Cloud-native design · Hub-Spoke VNet · Multi-tenancy
[security] Zero Trust · Entra ID B2C/B2B · ISO 27001/27018
[devops] CI/CD pipelines · IaC automation · Platform engineering
[finops] Cost optimization · Right-sizing · FinOps governance
[ai-infra] Azure OpenAI · RAG · AI Search · Document Intelligence
$ az certifications list --brief
26x verified across Microsoft Azure · IBM · Oracle
Top: Solutions Architect Expert · DevOps Engineer Expert · Admin Associate
→ credly.com/users/rajaastahir
$ az availability status
Status: Available · Open to consulting & the right full-time roles
Mode: Remote-first · Toronto, Canada
$
153+ Projects Completed
26x Certifications
70%+ Cloud Cost Reduction
10+ Years in Cloud
Rajaas Tahir
☁️
26x Certified Microsoft · IBM · Oracle

I design systems.
Not just resources.

10+ years in — from writing code through DevOps, into cloud architecture and now AI. I've built the kind of cross-cutting experience where I understand what happens at every layer when an architecture decision is made. I know what breaks downstream when you cut corners upstream.

I've re-architected platforms from single-tenant to multi-tenant, driven significant cloud cost reductions by questioning every architectural assumption, and built systems where security, performance, and cost are solved together — not traded against each other. Not by following a framework. By understanding what's actually happening inside the system.

Azure Architecture
Security & Zero Trust
DevOps & Platform Eng.
Azure OpenAI / AI Search
System Design & Trade-offs
Network Architecture
Data & Integration
Kubernetes & Containers
Hire Me LinkedIn Credentials

Labs, Videos & Blog

Hands-on labs on GitHub, tutorials on YouTube, and written blog posts — all in one place.

Azure Front Door Blog
Networking · Security

Azure Front Door: Global Load Balancing & WAF in One Service

A deep-dive into Azure Front Door — how it combines global HTTP load balancing, SSL offload, caching, and Web Application Firewall into a single managed service.

.NET in Docker Lab
DevOps · Containers

Run .NET 6 API in Docker — Build & Push to Docker Hub

Step-by-step lab: create a .NET 6 Web API, containerize it with Docker, build an image, and push it to Docker Hub registry.

Azure CI/CD for Angular Lab
DevOps · CI/CD

Azure CI/CD Pipelines for Angular UI

End-to-end lab creating Azure DevOps pipelines for an Angular-based UI — from build to multi-environment deployment with release gates.

ARM Templates Lab
IaC · Azure

Azure Resource Manager (ARM) Templates

Learn to create Azure Storage Accounts using ARM templates — declarative infrastructure as code for repeatable, consistent deployments.

Containerize Dev Environment Lab
DevOps · Containers

Containerize Your Dev Environment with VS Code

Eliminate "works on my machine" forever — use Docker and VS Code Dev Containers to create fully reproducible development environments.

Angular in Docker Video
DevOps · Containers

Angular App in Docker — Build Image & Push to Docker Hub

Full tutorial on containerizing an Angular web application, building a Docker image, and pushing it to Docker Hub for reusable deployment.

Azure Logic Apps Lab
Integration · Azure AD

Azure Logic Apps — Fetch Entra ID Users List

Use Azure Logic Apps to call Microsoft Graph API and retrieve Azure Active Directory user lists — a practical integration automation pattern.

Coming Soon

Azure Zero Trust Security in Practice

A detailed walkthrough of implementing Zero Trust principles across Azure — identity, network, and workload layers.

Architecture Projects

Real-world Azure architecture work — cost, security, DevOps, and system design at enterprise scale.

AI Architecture · RAG

Internal AI Knowledge Agent — Azure OpenAI + RAG

Designed and built a RAG-based internal knowledge agent using Azure OpenAI and Azure AI Search. Indexed a large codebase, database schemas, and technical documentation — enabling developers to query the entire system context in natural language. Integrated into debugging workflows, dramatically reducing time-to-resolution for complex issues.

Natural language queries across full codebase, schema, and docs · Integrated into developer workflows
Azure OpenAIAzure AI SearchRAG PatternVector EmbeddingsAzure FunctionsPython
AI Infrastructure · Governance

Azure AI Platform — Secure Infrastructure for LLM Applications

Architected the cloud infrastructure layer for production AI applications — private Azure OpenAI endpoints, APIM as AI Gateway for token throttling and logging, content filtering policies, managed identity auth, and a Hub-Spoke VNet topology with private DNS zones ensuring zero public AI exposure.

Zero public AI endpoint exposure · Full audit trail on all LLM calls · Responsible AI controls enforced at gateway
Azure OpenAIAPI ManagementPrivate EndpointsManaged IdentityContent FilteringBicep
AI · Search & Data

Semantic Search Platform — Azure AI Search + OpenAI Embeddings

Replaced keyword-based search on a large document corpus with a semantic search platform built on Azure AI Search with OpenAI ada-002 embeddings. Implemented hybrid search (keyword + vector), semantic re-ranking, and a custom relevance scoring layer. Reduced zero-result searches significantly and improved user-reported relevance scores.

Azure AI SearchOpenAI EmbeddingsHybrid SearchSemantic RankingPythonAzure Functions
Architecture · System Design

Single-Tenant → Multi-Tenant Platform Re-Architecture

Re-architected a fully siloed single-tenant platform into a shared multi-tenant architecture. Azure Front Door as the ingress layer with WAF and path-based routing rules. Custom claims enrichment via Function Apps for tenant context. All backend resources behind private endpoints with per-tenant RBAC. Client onboarding reduced to a single configuration step — zero infrastructure provisioning per client.

~80% infrastructure reduction · Significant cost savings · Linear scaling eliminated
Azure Front DoorMulti-TenancyCustom ClaimsPrivate EndpointsEntra ID B2CSystem Design
Cost Optimization · FinOps

Enterprise Cloud Cost Engineering — 70%+ Spend Reduction

Systematic FinOps engineering across a large Azure estate — right-sizing compute and storage, eliminating idle resources, switching to Reserved Instances for stable workloads, and fixing root-cause architectural inefficiencies (over-provisioned Function App triggers, redundant data movement). All without degrading SLA or performance.

70%+ cloud spend reduction · Delivered without any performance regression
Azure Cost ManagementAzure AdvisorReserved InstancesRight-sizingArchitecture ReviewFinOps
Security & Identity

Zero Trust Identity Architecture — Entra ID B2C/B2B

Designed a complete enterprise identity layer — Entra ID B2C/B2B, custom RBAC roles, custom claims enrichment via Azure Functions, and token validation (JWT, SAML, OpenID Connect, OAuth 2.0). Balanced strict access control with developer and end-user experience. All authentication flows behind private endpoints with Zero Trust network segmentation.

Entra ID B2C/B2BCustom RBACJWT / SAMLOAuth 2.0Zero TrustPrivate Endpoints
Security · Compliance

Defense-in-Depth Security & ISO 27001/27018 Compliance

Architected layered security across all environments: Hub-Spoke VNet topology, NSGs and ASGs, private endpoints for all PaaS services, Key Vault for secrets, Microsoft Defender for Cloud, and Azure Firewall. Authored all compliance documentation, control evidence, and risk registers required for ISO 27001/27018 external audits — passed multiple consecutive annual audits.

Hub-Spoke VNetNSGs / ASGsKey VaultDefender for CloudISO 27001/27018Azure Firewall
DevOps · Platform Engineering

CI/CD Consolidation — Dozens of Pipelines into One Reusable Template

Consolidated a sprawling set of client-specific Azure DevOps pipelines (thousands of lines of YAML) into a single parameterized reusable template. Automated the majority of manual operational tasks: environment onboarding, user provisioning, app deployments, test pipelines, DB schema migration, and artifact promotion. Self-hosted agents on AKS for cost and control.

80%+ manual operational tasks automated · Onboarding new clients reduced to minutes
Azure DevOpsYAML TemplatesVariable GroupsSelf-hosted AgentsPlaywrightSeleniumAKS
Containers · Kubernetes

AKS Production Platform — 99%+ Uptime Across Environments

Designed and operated AKS clusters across multiple isolated production environments. Configured HPA, KEDA event-driven scaling, PodDisruptionBudgets, rolling deployments, and resource quotas. Integrated automated Playwright/Selenium test gates into CI/CD — no deployment without green tests.

AKSKEDAHelmHPADockerTerraformGitOps
Data Engineering · Performance

Search Index Pipeline — From Days to Minutes

Replaced a brute-force full-reindex batch job with an ADF-orchestrated incremental sync pipeline using watermark-based change detection, bulk indexing tuning, and Synapse Analytics pre-aggregation. Turned a multi-day maintenance window into an on-demand, near-real-time operation — making frequent refreshes practical for the first time.

Indexing time reduced by 99%+ · On-demand refreshes now practical · Cluster right-sized and cost reduced
ElasticsearchAzure Data FactorySynapse AnalyticsCDC / WatermarkingBulk Indexing
Coming Soon

AI-Powered Document Intelligence Pipeline

End-to-end document processing pipeline using Azure Document Intelligence for extraction, Azure OpenAI for classification and summarisation, and Azure AI Search for retrieval — with a full audit trail and human-in-the-loop review workflow.

Follow progress

26x Certified

Microsoft, IBM, and Oracle certifications across architecture, security, DevOps, data, and AI.

All 26 certifications are verified and publicly available on Credly — Microsoft Azure, IBM, and Oracle credentials.

Verify All 26 Credentials on Credly

Let's Build Something

Open to architecture consulting, collaboration, and the right full-time opportunities.

Get In Touch

Whether you want to discuss an architecture problem, collaborate on content, or explore working together — I'd love to hear from you.

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Location Toronto, Ontario, Canada