Open to AI, cloud security & architecture leadership roles

Prateek Chauhan

Lead Architect

Senior enterprise, cloud and AI architect with 20+ years in technology architecture and operations — designing secure, resilient Agentic AI, RAG and Azure solutions for regulated enterprise environments.

Agentic AIRAGGenAI Security Microsoft AzureKubernetesTerraform / IaC DevSecOpsDisaster Recovery IAM / PAMEntra IDKey Vault & Secrets
20+
Years in Technology
10+
Years Enterprise Cloud
14+
Years at AT&T
6
AT&T Awards
15+
Certifications

Translating requirements into supportable solutions

I'm a senior enterprise, cloud and AI architect with 20+ years in technology architecture and operations, including 10+ years in enterprise cloud architecture and recent leadership in Agentic AI, RAG and AI-driven automation.

I have a strong hands-on architecture background in Microsoft Azure security controls, identity, networking, monitoring, DevOps/CI-CD, Kubernetes, Infrastructure as Code, disaster recovery and enterprise governance.

I specialise in translating architecture and operational requirements into secure, resilient and supportable solutions — and in coordinating technical teams and stakeholders to deliver them.

As a cyber security engineer, my focus is cloud, identity and secrets security: Entra ID, Azure Key Vault, service principals, managed identities, network security controls and Microsoft Sentinel — backed by long experience in security guidelines, patching, incident/change management, audit support, root-cause analysis and disaster recovery. I bring transferable knowledge for enterprise IAM/PAM and secrets-management environments: least privilege, just-in-time access, workload identity, credential protection, access governance, secret rotation and secure automation, with conceptual knowledge of platforms such as Delinea Secret Server and HashiCorp Vault.

What motivates me

Cloud SecurityAI SecuritySecurity-by-Design GovernanceRegulated Environments

Working style

  • Architecture tracks with cross-discipline teams
  • Documentation that meets enterprise & regulatory standards
  • Human-in-the-loop, safety-first AI
  • Knowledge sharing — Microsoft Certified Trainer; built Azure training paths and led AI sessions across AT&T

Architecture that is secure, resilient & intelligent

From storage and Unix foundations to enterprise cloud and Agentic AI — end-to-end architecture across the full technology stack.

Agentic AI & RAG

AI-driven automation for complex enterprise operational processes.

  • LangGraph-based agent engines
  • RAG apps with UI, APIs, safety gates & knowledge sources
  • GenAI security architecture
  • Data curation for model fine-tuning

Azure Cloud & Security

Enterprise Azure environments built with security-by-design.

  • Identity, networking, NSGs & Key Vault
  • Monitor, Sentinel & governance
  • CI/CD, Terraform, ARM & GitHub
  • Kubernetes & container registries

Resilience & Migration

Keeping critical services running through change.

  • Data-center migration
  • Disaster recovery & replication
  • Backup, clustering & cache-mirroring
  • Regulatory compliance & documentation

Identity, Privileged Access & Secrets Security

Cloud, identity & secrets security engineering

Protecting the identities, credentials and secrets that cloud and AI workloads depend on — with least privilege, auditability and secure automation built in.

Microsoft identity & access

Entra ID / Azure AD access controls: RBAC, least privilege and PIM concepts such as time-bound/JIT activation, approvals, MFA, access reviews and auditability.

Azure Key Vault

Protected storage and controlled retrieval of application secrets, keys and certificates, including access control, monitoring and rotation approaches.

Workload identities

Service principals and managed identities as non-human identities — limiting permissions and reducing reliance on long-lived embedded credentials.

PAM & secrets principles

Centralised credential vaulting, privileged-account lifecycle, rotation, approvals, audit trails, separation of duties, and static vs. dynamically issued credentials. Conceptual knowledge of enterprise PAM/secrets platforms such as Delinea Secret Server and HashiCorp Vault.

AI-agent access

Security-by-design for scoped agent permissions, API and knowledge-source access, credential protection and auditability in AI-enabled workflows.

Security operations

Linux/Unix security, patching, hardening guidelines, incident/change management, root-cause analysis, audit support and disaster recovery.

Featured project · AT&T

Azure Cloud Migration & Landing Zone Architecture

Designed the Azure Landing Zone for migrating AT&T on-premises workloads: a hub-and-spoke network with Azure Firewall, Bastion, AKS and VM spokes, governed by Azure Policy and protected by Defender for Cloud and Sentinel. Fully provisioned with Terraform through Azure DevOps pipelines that use passwordless Workload Identity Federation, Key Vault, SonarQube and secret detection.

Landing ZoneHub-and-SpokeTerraformAzure DevOpsWorkload Identity FederationAzure PolicyDefender for CloudSentinel
View case study

Enterprise AI Automation Platform

A unified AI platform I designed for network engineering teams: one secure entry point, three purpose-built AI workspaces covering the full network lifecycle — plan, configure, operate.

Platform Shell

Product landing page, SSO login, and an Enterprise AI Hub dashboard that routes users to colour-coded workspaces with a consistent design system.

HomeSSO LoginAI HubWorkspace

Ask Planner

For network planners & process owners
Concept design

AI-assisted process and network planning — turns documents and requirements into standards-based workflow models that planners validate before use.

95% accuracy60% fasterBPMN 2.0
Design targets
  • BPMN 2.0 workflow generation
  • Network planning automation
  • Document ingestion
  • Human-in-the-loop validation
BPMNRAGProcess Automation

Ask Ops

For network operations & support teams
Concept design

An AIOps copilot for operations — monitors in real time, explains root causes and drives automated remediation through runbooks.

90% faster MTTR24/7 monitoringAuto-remediation
Design targets
  • Real-time monitoring
  • AI root-cause analysis
  • Automated incident remediation
  • Operations runbook automation
AIOpsAgentic AIRunbooks

Career journey

Two decades progressing from systems administration to leading AI architecture at AT&T.

Lead Architect

Jan 2024 – Sep 2026
AT&T · Czechia

Designed and deployed AI-driven automation solutions and Agentic AI architectures for complex enterprise and telecommunications operational processes. Contributed to GenAI Security and Agentic AI Architecture, including RAG application design with UI, APIs, safety gates, LangGraph-based agent engines and knowledge sources. Led data curation for AI model fine-tuning and developed scalable Python automation. Designed an AI-powered solution for 5G network provisioning, improving process efficiency, delivery speed and customer service. Supported Azure deployment pipeline work involving cloud infrastructure, CI/CD practices and monitoring, and collaborated across teams to align architecture with business and operational requirements.

AT&T Connection AwardJun 2026
Recognised company-wide for SPOJIT application UX design and for delivering AI sessions across AT&T, driving collaboration and knowledge sharing.
Agentic AILangGraphRAGGenAI SecurityPython5G

Principal Engineer – Azure

Dec 2023 – Oct 2025
AT&T · Czechia

Designed and implemented an Azure deployment pipeline to automate secure, reliable and scalable infrastructure and service delivery. Developed CI/CD pipelines, applied enterprise best practices and integrated monitoring for ongoing performance optimization. Worked within enterprise Azure architecture and delivery, applying enterprise standards and documentation practices for reliable, supportable and compliance-conscious solutions.

AzureCI/CDMonitoringAutomation

Senior Architect – Enterprise Cloud

Jul 2021 – Dec 2023
AT&T · Czechia

Architected Azure environments covering VMs, Storage, Data Lake Gen2, Load Balancer, VNets, NSGs, Azure AD, App Services, SQL, Cosmos DB, Data Factory and Synapse. Designed DevOps capabilities including CI/CD, ARM, Key Vault, migration, Monitor, Sentinel, Recovery Services Vaults, Kubernetes, Container Registries, Terraform and GitHub. Led architecture tracks and designed data-center migration and disaster-recovery solutions with emphasis on resilience. Also used Azure DevOps and Azure Migrate, and designed storage/backup architectures across EMC, HDS, HP, IBM and NetApp, including replication, clustering and performance/capacity planning.

AT&T Connection AwardSep 2021
For designing the Microsoft Azure training path for CELL, publishing it through PLE and leading the first sessions.
Azure ADSentinelTerraformKubernetesSynapseDRAzure DevOpsAzure Migrate

Architect – Enterprise Cloud

Dec 2016 – Jul 2021
AT&T · Brno, Czechia

Designed enterprise storage and cloud architectures and provided guidance for OpenStack and AT&T cloud environments. Led project tracks and coordinated specialists from multiple disciplines. Architected migration, disaster recovery, storage replication, backup, clustering and cache-mirroring solutions. Designed SAN and storage-system solutions across Azure and AT&T/OpenStack IaaS, supported Azure infrastructure and CI/CD (VNets, NSGs, Azure AD, Azure DevOps, ARM templates, Terraform, monitoring and migration services), and delivered operational guidance.

AT&T Connection AwardMay 2021
For Azure certification and training leadership, including organisational and ERG-sponsored sessions and seminars.
OpenStackStorage ArchitectureReplicationClusteringAzure IaaSSAN Design

Consultant – IT Operations / Storage Hosting Systems

Jul 2012 – Dec 2016
AT&T · Brno, Czechia

Managed enterprise SAN environments across EMC, HDS, HP and NetApp platforms, including replication, performance analysis and capacity management. Provided end-to-end outage support, managed Cisco SAN switch installations/upgrades and mentored new team members. Worked with Brocade and Cisco SAN switches, storage allocation and replication technologies including SRDF and ShadowImage, as part of problem-resolution, performance, replication and documentation teams.

Making a Difference AwardMay 2016
Designed and delivered an integrated roadmap to optimise operational investment and efficiency, including reclaim automation.
Star Performance AwardOct 2015
Established a new Tier 2/Tier 3 storage team in Bangalore and delivered a month of technical training across Cisco, HDS, EMC and HP.
Star Performance AwardAug 2014
Handled a data-centre power-failure storage outage and supported recovery until services were fully restored.
SANEMCHDSNetAppCisco MDSBrocadeSRDFShadowImage

IT Specialist L2 / Senior Unix & Storage Administrator

Jun 2009 – Jul 2012
IBM · Brno, Czechia

Administered AIX, HP-UX and Red Hat Linux environments with security guidelines, patching, health checks, change and incident management. Managed SAN zoning and LUN operations in SLA-driven environments. Supported audits, prepared RCAs and coordinated teams and customers. Also handled port reservation, Windows server antivirus management, documentation and technical training.

AIXHP-UXRHELSAN ZoningITIL

Unix Administrator / Technical Focal Point

Feb 2007 – May 2009
Natek S.R.O. · South Moravia, Czechia

Supported Unix/Linux systems, security guidelines, patches, health checks, incident/change management and Windows Server antivirus; coordinated a team of six and prepared root-cause analyses.

System Administrator

Jul 2006 – Dec 2006
Tribal Fusion R&D Pvt. Ltd. · Noida, India

Managed Linux and Windows Server 2003 environments, routers, switches and firewall infrastructure; troubleshot performance/connectivity and supported a California–Noida VPN link.

Technical Territory Manager / Technical Trainer

Jul 2005 – Jun 2006
IIHT Ltd · Northern India

Delivered technical audits, quality assurance, seminars and workshops; supported Windows Server and Red Hat Linux setup across 26 training centres. Training areas: MCSE, CCNA and RHCE.

Unix Administrator / Server Specialist / Technical Trainer

Feb 2004 – Jun 2005
Koenig Solutions Pvt. Ltd. · India

Built and troubleshot Windows Server 2003 and Red Hat Enterprise Linux environments; server support and technical training in MCSE, RHCE and CCNA.

Software Consultant

Jan 2000 – Sep 2003
Electronics Corporation of India Ltd. · Greater Delhi Area

Supported LAN setup and maintenance across Microsoft BackOffice Server and Linux; managed software installation/configuration and router troubleshooting.

Skills & technologies

AI & GenAI

Agentic AIRAGLangGraphGenAI SecuritySafety GatesFine-tuning Data CurationPython AutomationRAG ControlsAPI & Knowledge-source AccessThreat ModellingSecurity Documentation

Microsoft Azure

Azure AD / EntraVNets & NSGsKey VaultMonitorSentinelApp ServicesSQL & Cosmos DBData FactorySynapseData Lake Gen2Recovery ServicesAzure MigrateHybrid InfrastructureVMware

DevOps & IaC

CI/CDTerraformARM TemplatesGitHubKubernetesContainer RegistriesOpenStackAzure DevOpsDeployment Monitoring

Storage & Resilience

EMCHDSHPNetAppCisco SANReplicationDisaster RecoveryBackup & ClusteringDC MigrationIBM StorageBrocadeSRDFShadowImage

Unix & Linux

AIXHP-UXRed Hat LinuxPatching & HardeningIncident & Change MgmtRCA

Leadership & Governance

Architecture TracksStakeholder CoordinationEnterprise StandardsRegulatory ComplianceAuditsMentoringTechnical Training (MCT)Technical Risk Management

Identity & Access Security

IAMRBACLeast PrivilegePAM ConceptsJIT AccessPIMMFAAccess ReviewsService PrincipalsManaged IdentitiesWorkload Identity

Secrets Management

Azure Key VaultSecret Storage & RetrievalCredential LifecycleRotationKey / Certificate ProtectionApprovals & Audit TrailsStatic vs Dynamic SecretsDelinea Secret Server (conceptual)HashiCorp Vault (conceptual)

Security Operations

Microsoft SentinelNetwork Security GroupsLinux/Unix SecurityPatchingHardeningIncident & Change MgmtRoot-cause AnalysisAudit SupportDisaster Recovery

Education, certifications & awards

Education

MSc, Computer Science

MDU — Maharshi Dayanand University2000 – 2002

Advanced Diploma, IT

IGNOU2000 – 2001

BSc, Health Education

Delhi University1997 – 2000

Certifications

Azure AI Fundamentals

Microsoft · AI-900Issued Jun 2021

Cybersecurity Architect Expert

MicrosoftIssued Sep 2023

Microsoft Certified Trainer

Microsoft · MCT2020 – 2023

Languages

Hindi

Native / Bilingual

English

Full Professional

Czech

Elementary

German

Elementary

All certifications

Expert

Cybersecurity Architect Expert

Microsoft CertifiedIssued Sep 2023
Expert

Azure Solutions Architect Expert

Microsoft CertifiedIssued Dec 2019
Expert

DevOps Engineer Expert

Microsoft CertifiedIssued Aug 2020
Associate

Azure Security Engineer Associate

Microsoft CertifiedIssued Apr 2021
Associate

Information Protection Administrator Associate

Microsoft CertifiedIssued Sep 2021
Associate

Azure Administrator Associate

Microsoft CertifiedIssued Aug 2020
Fundamentals

Security, Compliance & Identity Fundamentals

Microsoft CertifiedIssued Sep 2021
Fundamentals

Azure AI Fundamentals

Microsoft CertifiedIssued Jun 2021
Fundamentals

Azure Data Fundamentals

Microsoft CertifiedIssued Dec 2020
Fundamentals

Azure Fundamentals

MicrosoftIssued Aug 2019
Trainer

Microsoft Certified Trainer (MCT)

2020–21 · 2021–22 · 2022–23Issued Oct 2020, Oct 2021, Oct 2022
Exams

AZ-300 · AZ-301 · AZ-400

Azure Architect Technologies & Design; DevOps SolutionsOct 2019 · Dec 2019 · Aug 2020
Industry

CCNA

Cisco
Industry

RHCE

Red Hat Enterprise Linux 4
Industry

MCSE 2003

Microsoft
Industry

ITIL Certified V3

ITIL
Industry

VMware VCP 5.0

VMware

Recognition & Impact — 6 AT&T awards across 4 consecutive roles

Recognised repeatedly over 12 years at AT&T, from storage operations to cloud and AI architecture — for outage recovery, building teams, driving operational efficiency, and sharing Azure and AI knowledge across the company.

AT&T · Jun 2026 · as Lead Architect

Connection Award

For contributions to SPOJIT application UX design and delivering AI-related sessions across AT&T, with positive impact through collaboration and knowledge sharing.

AT&T · Sep 2021 · as Senior Architect

Connection Award

For developing the Microsoft Azure training path for CELL, making it available through PLE, and leading the initial sessions.

AT&T · May 2021 · as Architect – Enterprise Cloud

Connection Award

For self-development, Azure certification and training leadership, including organisational and ERG-sponsored training sessions and seminars.

AT&T · May 2016 · as Consultant – IT Ops

Making a Difference Award

For developing and delivering an integrated roadmap to optimise operational investment and efficiency, including reclaim automation.

AT&T · Oct 2015 · as Consultant – IT Ops

Star Performance Award

For establishing a new Tier 2/Tier 3 storage team in Bangalore and delivering a month of technical training across Cisco, HDS, EMC and HP.

AT&T · Aug 2014 · as Consultant – IT Ops

Star Performance Award

For handling a data-centre power-failure storage outage and supporting recovery until services were restored.

Let's connect

Interested in AI architecture, cloud security or enterprise transformation? I'm always happy to talk.