M365 Software Developer

ARSIEM Corporation

Quality Assurance Analyst at ARSIEM supporting federal Microsoft 365 Contractor Support Services program. Ensuring quality control, performance monitoring, and documentation compliance in a remote working environment.

Posted 6/16/2026full-timeRemote • 🇺🇸 United StatesMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

ASP.NETAzureCloudEntity FrameworkJavaScript.NET

About the role

Key responsibilities & impact

Develop, maintain, troubleshoot, and enhance Microsoft 365 and Power Platform solutions.
Support application development using Power Apps, Power Automate, Power BI, Dataverse, and related Power Platform components.
Develop and maintain .NET-based solutions using C#, ASP.NET MVC, Entity Framework, JavaScript, HTML, and CSS.
Create and maintain PowerShell scripts to support M365 administration, OneDrive features, SharePoint functionality, automation, and operational needs.
Customize SharePoint lists and integrate disparate systems using Power Apps and related tools.
Support configuration and maintenance of Power Platform environments, pipelines, and tenant-level settings.
Troubleshoot user issues related to Copilot, Power BI, Power Apps, Power Automate, SharePoint Online, OneDrive for Business, Teams, and related services.
Assist with monitoring Dataverse environments, optimizing data models, monitoring resource utilization, and resolving performance issues.
Support Proofs of Concept, pilot testing, reference materials, FAQs, knowledge articles, and training content.
Contribute to bi-weekly and monthly status reporting.

Requirements

What you’ll need

Minimum 5 years of experience supporting Microsoft 365 cloud-based services in a large corporate or government environment.
Strong .NET development skills, including C#, ASP.NET MVC, Entity Framework, JavaScript, HTML, and CSS.
Experience with Microsoft Power Platform, including Power Apps, Power Automate, Power BI, and Dataverse.
Experience with SharePoint Online development and administration.
Experience developing Power Apps models and customizing SharePoint lists.
Proficiency creating PowerShell scripts.
Knowledge of Exchange, Intune, Azure AD, Azure, Teams, OneDrive, and related M365 services.
Ability to troubleshoot technical issues across the M365 platform and AvePoint Online Services.
Strong written and oral communication skills.
Ability to complete IRS MBI/security onboarding and required IRS security training.

Benefits

Comp & perks

For an overview of ARSIEM benefits, please visit https://www.arsiem.com/careers/

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

.NETC#ASP.NET MVCEntity FrameworkJavaScriptHTMLCSSPower AppsPower AutomatePower BI

Soft Skills

troubleshootingcommunication

Certifications

IRS MBI/security onboardingIRS security training