Mohsin Rubel

Senior DevOps Engineer

Health Payment Systems, Inc. • Full time

Dec 2023 - Present • 2 yrs 9 mos

Lead Azure, VMware, and Windows/Linux platform engineering for a healthcare payments company. Design and manage secure Azure networking including virtual networks, private endpoints, Front Door, WAF, Application Gateway, and hybrid connectivity, alongside App Services, Functions, Key Vault, and Storage. Build Terraform infrastructure as code and CI/CD pipelines in Azure DevOps and Octopus Deploy, with PowerShell and Fortra Automate runbooks for provisioning, patching, and operational standardization. Own monthly patching, disaster recovery runbooks, and security hardening across 150+ Windows servers. Engineer observability using Azure Monitor, Log Analytics, Application Insights, SQL Monitor, and Zabbix. Also prototyped an internal LLM-powered knowledge agent using retrieval-augmented generation over approved runbooks and SOPs, secured with Key Vault and managed identities.

DevOps Architect

Corporate Travel Management • Full time

Dec 2020 - Nov 2023 • 2 yrs 11 mos

Architected secure, highly available Azure infrastructure and automated CI/CD delivery. Led cloud migration workstreams, configured global traffic distribution through Azure Front Door and Web Application Firewall, and maintained SLA and compliance adherence through structured incident and change management.

Systems Administrator

AmeriSave Mortgage Corporation • Full time

May 2017 - Nov 2020 • 3 yrs 6 mos

Administered Windows and Linux server environments across multiple Azure subscriptions, managing Active Directory Domain Services, identity and access controls, virtual machines, and Group Policy for segregated production and non-production environments. Automated routine system administration with PowerShell and Bash — provisioning, configuration, patching, environment validation, and reporting — standardizing tasks across infrastructure and application teams. Built reusable Terraform modules to provision VMs, Key Vault, Storage Accounts, App Services, and associated networking and security components. Managed Azure networking and remote access including hub-and-spoke topology, VPN gateways, DNS, private endpoints, Front Door, and Application Gateway/WAF. Supported containerized workloads on Kubernetes and OpenShift, managing namespaces, ingress, and role-based access control. Ran monitoring and alerting through Datadog, building dashboards and alerts that cut incident response time by approximately 30%. Partnered with identity, networking, cybersecurity, database, and operations teams on compliant infrastructure delivery.