# Samiur Rahman — Cloud Engineer > Cloud DevOps Engineer at LEO Pharma, formerly Senior Cloud Network Engineer at Microsoft. Enterprise Azure platform engineering, identity, networking, and production AI on Azure AI Foundry. Canonical URL: https://samiur.com/ Markdown alternate of the homepage (see [llms.txt](https://samiur.com/llms.txt)). ## About **Samiur Rahman** is a Cloud Engineer focused on Microsoft technologies, with a background in cloud network engineering. He works across the architecture, governance, identity, and reliability of enterprise-scale Azure environments, including the platform engineering behind production AI workloads. He is currently a Cloud DevOps Engineer at **LEO Pharma**, one of the senior engineers responsible for the company’s Azure platform: 200+ subscriptions and a 15,000-user tenant, governed end to end with Terraform. The role covers platform architecture (App Services, high-performance VMs, network gateways), enterprise identity on Microsoft Entra ID, CI/CD in Azure DevOps, and reliability engineering for the production fleet. He is also responsible for the lifecycle of the company’s generative AI models in Azure AI Foundry — principally Anthropic Claude and OpenAI GPT — together with the secure AI gateways that connect Foundry to internal systems. He acts as the senior escalation point for incidents across the Microsoft ecosystem, leads resolution of critical network incidents, and advises Cyber Security leadership on Azure and Intune. In 2025 he delivered around DKK 570,000 (€76,000) in annualised savings through cloud FinOps. He is part of a cross-disciplinary team of cloud, data engineering, data science, and AI, reporting to the Head of AI & Cloud Data Services in Copenhagen. He was previously a Senior Cloud Network Engineer at **Microsoft** (Azure CSS), handling incidents of global criticality daily with a constant caseload of 20 to 30 cases under strict SLAs. The work meant resolving networking problems that customers’ own engineers could not, across ExpressRoute, private peering, DNS, AKS, and most of the Azure networking stack. Customers included Fortune 50 enterprises and government organisations such as the Government of the United Kingdom, the British Transport Police, and the Government of South Australia. Earlier roles were held at **BNP Paribas** in Kraków and **Honeywell** in Katowice. He holds 36+ certifications from Microsoft, Cisco, and Palo Alto Networks. Samiur is also a trainee pilot, having completed the EASA Private Pilot Licence ground school at ATO Avioner in Warsaw with a rating of 94%. He is currently in the practical phase of the course. ### At a glance - 200+ Azure subscriptions - 15,000 managed users - DKK 570K · €76K annualised savings (2025) - 36 professional certifications ## Career ### Cloud DevOps Engineer — LEO Pharma **April 2025 — present** One of the senior engineers responsible for LEO Pharma’s Azure platform: 200+ subscriptions and a 15,000-user tenant, governed end to end with Terraform. Architects and delivers platform services across App Services, high-performance VMs, network gateways, and traffic security controls. Engineers tenant-wide identity on Microsoft Entra ID — SSO (OAuth 2.0 / OIDC) for Azure applications and Snowflake, app registrations, service principals, conditional access, and Terraform-codified access packages — and maintains the platform’s CI/CD pipelines and Terraform workflows in Azure DevOps. Owns the generative AI models hosted in Azure AI Foundry across their full lifecycle, from provisioning through retirement, and engineered the AI gateways that enable internal systems to consume Foundry models securely. Leads reliability engineering for the 40+ VM production fleet: zone-redundant deployments, SLO/SLI tracking, blameless postmortems, runbooks, and observability through Azure Monitor and Application Insights. Acts as the senior escalation point for incidents across the Microsoft ecosystem, leads resolution of critical network incidents, and advises Cyber Security leadership on Azure and Intune. Cloud FinOps across the estate delivered approximately DKK 570,000 (€76,000) in annualised savings in 2025. ### Senior Cloud Network Engineer — Microsoft **March 2024 — March 2025** Azure Customer Service & Support (CSS), Global Azure Core Network team. Managed incidents of global criticality daily, sustaining a constant caseload of 20 to 30 cases under stringent SLAs. Resolved networking problems beyond the reach of customers’ own engineering teams across nearly the full breadth of Azure networking: VNet peering, ExpressRoute and private peering, DNS, VPN and gateways, load balancing, firewalls, AKS/ACI networking, and cross-tenant connectivity. Delivered root-cause analysis for complex multi-region failures and advised customer cloud and infrastructure teams on Azure network architecture, Kubernetes networking, and security best practices. Supported Fortune 50 enterprises and government organisations, including the Government of the United Kingdom, the British Transport Police, and the Government of South Australia. ### IT Specialist (L2) — BNP Paribas **August 2023 — March 2024 · Kraków** L2 escalation engineer: identity administration in Microsoft Entra, system upgrades, and network triage in a regulated financial-services environment. ### Senior CX Specialist — Honeywell **January 2023 — August 2023 · Katowice** Honeywell UK B2B operations: customer escalations on CRM and ERP platforms. ## Education - BSc in Computer Science — IT Security, WSB University, Poland - BSc in Transport — Aviation, Silesian University of Technology, Poland - EASA Private Pilot Licence — Ground School (94%), ATO Avioner, Warsaw, Poland (completed 2023; practical training ongoing) - US High School Diploma, United States Department of Education ## Certifications Thirty-six professional certifications in cloud, security, networking, and compliance (Microsoft, Cisco, Palo Alto Networks, and others). The interactive list is on the homepage Certifications section. ## Contact For enquiries regarding Azure platform engineering, identity, site reliability, or cloud networking: - LinkedIn: https://www.linkedin.com/in/samiur-rahman-aviation/ - GitHub: https://github.com/samiurrahman-mahin - Website: https://samiur.com/