Abdul is available for hire

Abdul Rehman Aftab

Verified Expert in Engineering

Full-stack and DevOps Developer

Location

Lahore, Punjab, Pakistan

Toptal Member Since

July 5, 2022

Abdul is a highly resourceful developer with more than seven years in the IT sector. He has hands-on experience with multinational clients on Microsoft platforms and web technologies, including Microsoft Azure, ASP.NET MVC, .NET Core, C#, HTML, CSS, JavaScript, jQuery, Angular, and more. Abdul is looking forward to contributing to new and challenging projects.

Full-stack Bootstrap 4 DevOps Engineer Web Development Secure Web Development SaaS Mobile App Development Windows .NET .NET Core C#SQL ASP.NET CSS Git

Portfolio

Bllix Inc

ASP.NET Core, React, Angular, .NET, SQL Server 2017, Google API, Bubble...

CANADIAN FOOD INNOVATION NETWORK

Microsoft Azure, Azure Cognitive Services, Microsoft Power BI, .NET, Azure...

Commonwealth Financial Network - Main

Azure, .NET, CI/CD Pipelines, C#, GitHub, Kubernetes, Azure DevOps, Java...

Experience

.NET - 8 years C# - 8 years Angular - 7 years Full-stack - 7 years Microsoft Azure - 6 years Software Architecture - 6 years Agile Software Development - 6 years Azure DevOps - 5 years

Availability

Part-time

Preferred Environment

Web Development, REST APIs, ASP.NET Core, Azure, DevOps, Virtual Machines, Cloud, .NET, Windows PowerShell, CI/CD Pipelines

The most amazing...

...thing I have worked on was setting up security on Microsoft Azure while integrating the application and its cloud resources with that security.

Work Experience

Full-stack Developer

2023 - 2023

Bllix Inc

Developed features in a cloud-based inventory system.
Tracked and fixed bugs in the app using Azure DevOps and Jira.
Worked on deployment pipelines and fixed CI/CD deployment process.

Technologies: ASP.NET Core, React, Angular, .NET, SQL Server 2017, Google API, Bubble, Full-stack Development, JSON Web Tokens (JWT), Windows, Microsoft Stack, Visual Studio Code (VS Code), DevOps Engineer

Azure Developer

2023 - 2023

CANADIAN FOOD INNOVATION NETWORK

Developed an app that leverages Azure Cognitive APIs and integrates it into Azure Maps.
Created a POC for integration between Azure Maps and Azure Cognitive APIs.
Worked with multiple filters from data coming from Azure Cognitive while also managing to display runtime results in Azure Maps.

Technologies: Microsoft Azure, Azure Cognitive Services, Microsoft Power BI, .NET, Azure, ASP.NET Web API, Maps, JSON, SQL Server 2017, Git, MVC Frameworks, .NET 6, Azure Blob Storage API, Cloud, Windows Server, Server Administration, API Integration, Facebook API, Google API, Full-stack Development, JSON Web Tokens (JWT), Windows, Automation Developer, Microsoft Stack, Telerik, Visual Studio Code (VS Code), Office 365 API, DevOps Engineer, MySQL

DevOps Engineer

2022 - 2023

Commonwealth Financial Network - Main

Helped software engineers implement DevOps, including close communication, strategy, and process improvement.
Provided CI/CD in configuration management and IaC: GitFlow, reusable code, and open-source contribution.
Designed and implemented the full automation for builds and releases using Azure YAML pipelines. Also, designed and implemented multi-stage deployments (sandbox, development, QA, UAT, and production).
Implemented CI/CD pipelines and flows and deployed apps to Azure using ARM templates.
Worked with data pipelines and deployed apps to Snowflake.
Worked on MuleSoft CI/CD pipelines and created fully automated flows for Anypoint platform deployments.
Implemented a parent-child POM concept on MuleSoft apps and integrated connected app deployments in CI/CD pipelines.

Technologies: Azure, .NET, CI/CD Pipelines, C#, GitHub, Kubernetes, Azure DevOps, Java, MuleSoft, C#.NET, Continuous Integration (CI), Continuous Delivery (CD), YAML Pipelines, Windows PowerShell, Integration, G Suite, Google Workspace, TypeScript, Azure Active Directory B2C (ADB2C), Security, T-SQL (Transact-SQL), Python, DevOps, Data Centers, Virtual Machines, Azure IaaS, IIS SQL Server, Firewalls, JSON, SQL Server 2017, HTML5, Git, .NET 6, Microsoft Power Platform, Automation Scripting, Cloud, Windows Server, System Administration, Server Administration, Data Visualization, Microsoft 365, JSON Web Tokens (JWT), Windows, Automation Developer, Microsoft Stack, Microsoft Dynamics 365 for Finance and Operations, Visual Studio Code (VS Code), BI Reporting, Ansible, DevOps Engineer, MySQL

Principal Software Engineer

2019 - 2023

DatumSquare IT Services

Developed a feature for the app of a US insurance company that allows calling customers and conference calls.
Built an admin panel to enable the super administrator and other administrators to track different tenants, identify the users inside the tenant, and the apps assigned to tenants and individual users.
Tracked and fixed bugs and completed user stories using Jira and Azure Boards as the reporting tools.
Handled deployments to development and production and its post-deployment support.
Worked on setting up deployments and pipelines for different projects. Implemented fully automated pipeline workflows, from continuous integration to running tests and deploying to servers, making the process smooth, fast, and error-free.
Worked on SQL stored procedures in multiple projects and also worked on database normalization.
Worked on customizing SharePoint sites and pages using out-of-the-box features, SharePoint Designer, and custom code solutions.
Developed SharePoint workflows and integrated them with other business systems to automate processes and reduce manual effort.

Technologies: .NET, .NET Core, Microsoft Azure, Agile Software Development, Azure DevOps, Angular, Cloud Security, Deployment, Communication, C#, C#.NET, Azure App Service, Full-stack, Amazon Web Services (AWS), Twilio API, SMS, JavaScript, Salesforce API, ASP.NET, APIs, YouTube API, Secure Web Development, Web Development, Web Security, REST APIs, Bootstrap, jQuery, CSS, HTML, Azure, ASP, ASP.NET MVC, Visual Studio 2017, eCommerce, CI/CD Pipelines, Quality Assurance (QA), SQL, Microsoft SQL Server, SOAP, .NET 4, QA Automation, Messaging, Unit Testing, Integration Testing, HTTPS, GitHub, Razor, LINQ, MVC Razor, Azure Active Directory, Auth, Single Sign-on (SSO), Active Directory Federation, ASP.NET Core, Front-end Development, Microsoft, gRPC, Azure Cognitive Services, Microsoft Power BI, ASP.NET Web API, Maps, Windows PowerShell, Integration, SaaS, G Suite, Google Workspace, TypeScript, Blazor, CSS3, Data Processing, Azure Active Directory B2C (ADB2C), Windows Presentation Foundation (WPF), Security, T-SQL (Transact-SQL), SQL Stored Procedures, Normalization, ASP.NET Razor, DevOps, Data Centers, Virtual Machines, Azure IaaS, IIS SQL Server, Firewalls, Microsoft Dynamics 365, JSON, Payment APIs, React, SQL Server 2017, Bootstrap 4, HTML5, Front-end, Sass, Git, MVC Frameworks, .NET 6, Microsoft Dynamics CRM, SharePoint, Office 365, .NET MAUI, Google Cloud Platform (GCP), Automation Scripting, Azure Blob Storage API, Azure Event Hubs, Cloud, Windows Server, System Administration, Server Administration, Data Visualization, Microsoft 365, Marketing Automation, Marketing Strategy, Zapier, API Integration, ASP.NET Web Forms, Facebook API, Google API, Bubble, Instagram API, LinkedIn API, Facebook Ads, X++, Microsoft Power Automate, Full-stack Development, No-code, Low-code Development, JSON Web Tokens (JWT), Twilio, Stripe, Microsoft AI, Windows, Automation Developer, Robotic Process Automation (RPA), XAML, Microsoft Stack, Telerik, Mobile App Development, Xamarin.Forms, Android, iOS, Microsoft Dynamics 365 for Finance and Operations, Visual Studio Code (VS Code), Office 365 API, DevOps Engineer, MySQL

DevOps Engineer

2021 - 2022

TMG Consultants

Set up CI/CD pipelines for Azure app services and AWS Lambda functions. Created fully automated, end-to-end workflows for deployments.
Tracked and fixed issues with Azure or AWS infrastructure.
Configured and implemented database updates, migration, and security.
Implemented infrastructure security on Azure resources and worked on networking with private networks.
Worked on designing and developing custom SharePoint applications using SharePoint Framework (SPFx), including web parts, extensions, and application customizers.
Created SharePoint lists and libraries and customized their forms, views, and metadata to meet specific business requirements.
Integrated SharePoint with other Microsoft technologies such as Power BI, Power Apps, and Microsoft Teams to provide a seamless user experience and improve collaboration.

Technologies: Azure DevOps, GitHub, GitHub Actions, Azure Virtual Networks, Azure SQL Databases, PostgreSQL, PgBouncer, Azure Application Insights, Azure Logic Apps, Azure Functions, AWS Lambda, Amazon S3 (AWS S3), Amazon Virtual Private Cloud (VPC), AWS IAM, AWS Elastic File System, AWS NAT Gateway, Azure App Service, Azure Virtual Machines, Azure Pipelines, Azure Boards, Docker, Azure Container Registry, Azure Key Vault, Microsoft Teams, Amazon Web Services (AWS), APIs, Secure Web Development, Web Security, REST APIs, Azure, CI/CD Pipelines, Quality Assurance (QA), HTTPS, Azure Active Directory, Auth, Microsoft Power Apps, SharePoint Online, SharePoint, SharePoint 365, Microsoft, Google Sheets, Azure Cognitive Services, Microsoft Power BI, Windows PowerShell, Integration, SaaS, G Suite, TypeScript, Blazor, Data Processing, Azure Active Directory B2C (ADB2C), Security, T-SQL (Transact-SQL), Normalization, ASP.NET Razor, Python, DevOps, Data Centers, Virtual Machines, Azure IaaS, IIS SQL Server, Firewalls, SharePoint UI, Microsoft Dynamics 365, JSON, SQL Server 2017, HTML5, Git, .NET 6, Microsoft Power Platform, Microsoft Dynamics CRM, Office 365, .NET MAUI, Automation Scripting, Azure Blob Storage API, Azure Event Hubs, Cloud, Windows Server, System Administration, Server Administration, Data Visualization, Microsoft 365, Marketing Automation, Marketing Strategy, Office Add-ins, Zapier, X++, Microsoft Power Automate, No-code, Low-code Development, JSON Web Tokens (JWT), Twilio, Microsoft AI, Windows, Automation Developer, Robotic Process Automation (RPA), Microsoft Stack, Telerik, Microsoft Dynamics 365 for Finance and Operations, Visual Studio Code (VS Code), BI Reporting, Ansible, Office 365 API, DevOps Engineer

Technical Consultant and Trainer

2016 - 2020

Microtechx

Supported different startups and independent software vendors (ISV) on technical issues and architecture.
Delivered industry-level training in the corporate and educational sectors.
Launched a student partner program in collaboration with educational institutes.
Helped achieve deployment automations on different projects and multiple servers. Reduced manpower and made the process error free, fast, and automated.
Helped and supported SQL structures, including stored procedures, functions, and normalizations.

Technologies: .NET, Microsoft Azure, Azure App Service, Full-stack, JavaScript, ASP.NET, APIs, Web Development, REST APIs, Bootstrap, jQuery, CSS, HTML, Azure, ASP, ASP.NET MVC, Visual Studio 2017, eCommerce, CI/CD Pipelines, Quality Assurance (QA), SQL, Microsoft SQL Server, Messaging, Unit Testing, GitHub, Razor, LINQ, MVC Razor, Azure Active Directory, Auth, Single Sign-on (SSO), ASP.NET Core, Front-end Development, Microsoft Power Apps, SharePoint Online, SharePoint, SharePoint 365, Microsoft, Google Sheets, Azure Cognitive Services, Microsoft Power BI, ASP.NET Web API, Maps, Windows PowerShell, Integration, SaaS, Google Workspace, TypeScript, Blazor, CSS3, Data Processing, Azure Active Directory B2C (ADB2C), Windows Presentation Foundation (WPF), Security, T-SQL (Transact-SQL), SQL Stored Procedures, Normalization, ASP.NET Razor, DevOps, Data Centers, Virtual Machines, Azure IaaS, IIS SQL Server, Firewalls, SharePoint UI, Microsoft Dynamics 365, JSON, Payment APIs, Angular, React, SQL Server 2017, Bootstrap 4, HTML5, Front-end, Sass, Git, MVC Frameworks, .NET 6, Microsoft Power Platform, Microsoft Dynamics CRM, Office 365, .NET MAUI, Google Cloud Platform (GCP), Automation Scripting, Azure Blob Storage API, Azure Event Hubs, Cloud, Windows Server, System Administration, Server Administration, Microsoft 365, Marketing Automation, Marketing Strategy, Office Add-ins, Zapier, API Integration, ASP.NET Web Forms, Facebook API, Google API, Instagram API, LinkedIn API, Facebook Ads, X++, Microsoft Power Automate, Full-stack Development, No-code, Low-code Development, JSON Web Tokens (JWT), Twilio, Stripe, Microsoft AI, Windows, Automation Developer, Robotic Process Automation (RPA), Xamarin, XAML, Microsoft Stack, Telerik, Mobile App Development, Xamarin.Forms, Android, iOS, Microsoft Dynamics 365 for Finance and Operations, Visual Studio Code (VS Code), BI Reporting, Ansible, Office 365 API, DevOps Engineer, MySQL

Software Engineer and Scrum Master

2017 - 2019

Click Chain Inc.

Developed a customer relationship management (CRM) system for health sector clients, ensuring compliance and managing fulfillment.
Tracked and fixed bugs with Jira and Azure DevOps—formerly Visual Studio Team Services.
Managed the team and solved roadblocks as the scrum master.

Technologies: C#, .NET, .NET Core, Angular, Microsoft Azure, Okta, SAML-auth, IdentityServer 3, C#.NET, Azure App Service, Full-stack, Amazon Web Services (AWS), Twilio API, SMS, JavaScript, ASP.NET, APIs, YouTube API, Secure Web Development, Web Development, Web Security, REST APIs, Bootstrap, jQuery, CSS, HTML, Azure, ASP, ASP.NET MVC, Visual Studio 2017, eCommerce, CI/CD Pipelines, Quality Assurance (QA), SQL, Microsoft SQL Server, SOAP, .NET 4, Messaging, Unit Testing, Integration Testing, HTTPS, GitHub, Razor, LINQ, MVC Razor, Azure Active Directory, Auth, Single Sign-on (SSO), Active Directory Federation, ASP.NET Core, Front-end Development, Microsoft, Google Sheets API, Google Sheets, gRPC, Azure Cognitive Services, ASP.NET Web API, Maps, SaaS, TypeScript, CSS3, Data Processing, Windows Presentation Foundation (WPF), T-SQL (Transact-SQL), SQL Stored Procedures, Normalization, ASP.NET Razor, DevOps, Virtual Machines, IIS SQL Server, Firewalls, JSON, Payment APIs, React, SQL Server 2017, Bootstrap 4, HTML5, Front-end, Sass, Git, MVC Frameworks, .NET 6, Office 365, .NET MAUI, Google Workspace, Google Cloud Platform (GCP), Microsoft Power Apps, Azure Event Hubs, Cloud, Windows Server, Server Administration, Office Add-ins, Zapier, API Integration, ASP.NET Web Forms, Facebook API, Google API, Instagram API, LinkedIn API, Facebook Ads, Full-stack Development, JSON Web Tokens (JWT), Twilio, Stripe, Microsoft AI, Windows, Automation Developer, XAML, Microsoft Stack, Telerik, Mobile App Development, Xamarin.Forms, Android, iOS, Visual Studio Code (VS Code), BI Reporting, Ansible, Office 365 API

Software Engineer and Team Lead

2017 - 2017

IT Waly

Developed eCommerce apps and connected two or more parties for product buying and selling.
Tracked and fixed bugs using Jira and Trello as reporting tools.
Managed the deployment of the apps in multiple environments.

Technologies: C#, .NET, JavaScript, C#.NET, Full-stack, Twilio API, SMS, ASP.NET, APIs, Google Sheets API, Web Development, REST APIs, Bootstrap, jQuery, CSS, HTML, ASP, ASP.NET MVC, Visual Studio 2017, eCommerce, SQL, Microsoft SQL Server, .NET 4, Unit Testing, Razor, LINQ, MVC Razor, Auth, ASP.NET Core, Front-end Development, Microsoft, Google Sheets, gRPC, ASP.NET Web API, SaaS, TypeScript, CSS3, Windows Presentation Foundation (WPF), T-SQL (Transact-SQL), SQL Stored Procedures, ASP.NET Razor, JSON, SQL Server 2017, Bootstrap 4, HTML5, Front-end, Sass, Git, MVC Frameworks, .NET 6, .NET MAUI, Google Workspace, Google Cloud Platform (GCP), Cloud, API Integration, ASP.NET Web Forms, Full-stack Development, JSON Web Tokens (JWT), Windows, XAML, Microsoft Stack, Mobile App Development, Xamarin.Forms, Android, iOS, Visual Studio Code (VS Code), C++, Office 365 API

Developer Experiences (DX) Intern

2015 - 2015

Microsoft

Provided support to several startups and ISVs in building the architecture and use of Microsoft products and services.
Organized different technical training, conferences, and workshops in multiple companies.
Worked alongside Microsoft employees, collaborating with startups for technical support.

Technologies: .NET, Microsoft Azure, C#.NET, Full-stack, ASP.NET, APIs, Web Development, REST APIs, Bootstrap, jQuery, CSS, HTML, ASP, ASP.NET MVC, Visual Studio 2017, eCommerce, Razor, LINQ, Microsoft, ASP.NET Web API, CSS3, Windows Presentation Foundation (WPF), SQL Stored Procedures, JSON, SQL Server 2017, Bootstrap 4, HTML5, Front-end, Git, MVC Frameworks, .NET 6, .NET MAUI, Automation Scripting, Cloud, API Integration, ASP.NET Web Forms, Windows, Xamarin, XAML, Microsoft Stack, Xamarin.Forms, Android, iOS, C++

Microsoft Student Partner

2013 - 2015

Microsoft

Held a student partner role at Microsoft, acting as a bridge between the industry and the academic sector.
Conducted numerous training on different Microsoft technologies.
Provided architecture guidance and support to final-year students in their projects.

Technologies: .NET, Microsoft Azure, Xamarin, Mobile Apps, Full-stack, REST APIs, CSS, HTML, eCommerce, Razor, LINQ, ASP.NET Core, Microsoft, Windows Presentation Foundation (WPF), JSON, Bootstrap 4, HTML5, Front-end, Git, MVC Frameworks, .NET 6, Automation Scripting, Windows, Microsoft Stack, C++

Technical Intern

2014 - 2014

Microsoft

Trained with Microsoft experts in different technologies.
Developed windows store and cross-platform apps on the Microsoft platform.
Followed the progress of training and building apps.
Worked on app deployments on the web and mobile platforms.

Technologies: .NET, Microsoft Azure, Windows Azure SDK, C#.NET, Microsoft, Windows Presentation Foundation (WPF), JSON, Git, MVC Frameworks, .NET 6, Microsoft Stack

Experience

CRM System for an Insurance Company

The client was an insurance services company that deals with life insurance quotes, term life insurance, and homeowners insurance. This company was established in 1985 to provide Americans with unbiased insurance rate comparisons. I was the full-stack developer who, alongside my team, built a CRM system for the company. I engaged directly with the client to add features, fix bugs, and enhance use cases and business scenarios.

SaaS Platform for Healthcare Clients

The product is a comprehensive digital member engagement software solution that provides customization and self-service capabilities to healthcare clients. It is a secure and user-friendly SaaS platform designed to optimize healthcare operations and member interactions driving powerful results and improved outcomes. This project considered health engagement, compliance and risk management, and critical business communications during its development. I worked as a full-stack developer on this SaaS-based product and worked in a team following scrum principles and pair programming.

Secure Private Cloud Solution

Helped develop a secure private cloud solution targeting legal and compliance-driven industries. This product is a state-of-the-art platform that delivers technology to users via the internet. I worked as a full-stack developer in a scrum team, following scrum practices and pair programming.

App for a Security Company

The client, a security company, needed an application to track their employees. With the app, they could get real-time data displayed on a map of all employees and see whether an employee, i.e., the guard, is on the site or when he checks in and checks out. They can also track all employees' history and verify where a specific employee was at a particular time. I worked as a full-stack developer on this product.

Skills

Languages

C#, C#.NET, JavaScript, TypeScript, SQL, CSS, HTML, CSS3, ASP.NET Razor, HTML5, T-SQL (Transact-SQL), XAML, SAML, Java, Python, Sass, X++, C++

Frameworks

.NET, .NET Core, Angular, ASP.NET, Bootstrap, ASP, ASP.NET MVC, .NET 4, Razor, MVC Razor, ASP.NET Core, ASP.NET Web API, Windows PowerShell, Windows Presentation Foundation (WPF), ASP.NET Web Forms, JSON Web Tokens (JWT), gRPC, Blazor, IdentityServer 3

Libraries/APIs

Twilio API, REST APIs, jQuery, LINQ, Auth, Office 365 API, Azure API Management, Salesforce API, YouTube API, Google Sheets API, Azure Cognitive Services, React, Azure Blob Storage API, Facebook API, Google API, Instagram API, LinkedIn API, Stripe

Tools

Azure App Service, Azure Logic Apps, Azure DevOps Services, Azure Key Vault, Visual Studio, GitHub, Microsoft Teams, Microsoft Power Apps, Google Sheets, Azure Active Directory B2C (ADB2C), Git, Microsoft Dynamics CRM, Zapier, Azure Application Insights, Azure Virtual Network Gateway, Microsoft Power BI, G Suite, Bubble, Microsoft AI, Microsoft Dynamics 365 for Finance and Operations, Ansible, PgBouncer, Amazon Virtual Private Cloud (VPC), AWS IAM, Windows Azure SDK, Five9, Microsoft Team Foundation Server, Microsoft Graph

Paradigms

Azure DevOps, Agile Software Development, DevOps, Unit Testing, Low-code Development, Continuous Integration (CI), Continuous Delivery (CD)

Platforms

Azure, Azure Functions, Windows, Visual Studio Code (VS Code), Xamarin, Visual Studio 2017, SharePoint, Microsoft, Windows Server, Twilio, Azure PaaS, Amazon Web Services (AWS), SharePoint 365, Azure IaaS, Google Cloud Platform (GCP), Azure Event Hubs, Telerik, Android, iOS, AWS Lambda, Docker, Kubernetes, MuleSoft

Storage

Azure SQL, JSON, SQL Server 2017, Azure Cosmos DB, Azure Blobs, Azure Queue, Azure Active Directory, Databases, Amazon S3 (AWS S3), Microsoft SQL Server, SQL Stored Procedures, Data Centers, IIS SQL Server, MySQL, AWS Elastic File System, MongoDB, Azure SQL Databases, PostgreSQL, Azure Tables

Other

Microsoft Azure, Training, IT Consulting, Workshops, Software Architecture, Deployment, Communication, Office 365, Full-stack, APIs, Secure Web Development, Web Development, CI/CD Pipelines, Front-end Development, SaaS, Google Workspace, Virtual Machines, Bootstrap 4, MVC Frameworks, .NET 6, Cloud, Server Administration, Microsoft 365, API Integration, Microsoft Power Automate, Full-stack Development, Microsoft Stack, Mobile App Development, DevOps Engineer, Azure Virtual Machines, Azure Service Bus, IT Project Management, Cloud Security, SMS, Web Security, eCommerce, Quality Assurance (QA), SOAP, Messaging, HTTPS, Single Sign-on (SSO), Active Directory Federation, SharePoint Online, Maps, Integration, Data Processing, Firewalls, SharePoint UI, Microsoft Dynamics 365, Payment APIs, Front-end, Microsoft Power Platform, .NET MAUI, Automation Scripting, System Administration, Data Visualization, Marketing Automation, Marketing Strategy, Facebook Ads, No-code, Automation Developer, Robotic Process Automation (RPA), Xamarin.Forms, BI Reporting, Azure Virtual Networks, GitHub Actions, AWS NAT Gateway, Azure Pipelines, Azure Boards, Azure Container Registry, Okta, SAML-auth, Mobile Apps, Visual Studio Team Services (VSTS), QA Automation, Integration Testing, YAML Pipelines, Normalization, Office Add-ins

Industry Expertise

Security

Education

2011 - 2012

Intermediate Studies in Computer Science

Punjab College Bahawalpur - Bahawalpur, Pakistan

Certifications

AUGUST 2021 - AUGUST 2024

Microsoft Azure Developer Associate

Microsoft

AUGUST 2021 - AUGUST 2024

Microsoft Certified Trainer

Microsoft