Software Engineer (.NET) - US

About mSupply™

mSupply is a North American distributor of OEM repair parts and equipment serving the appliance, HVAC and plumbing industries. Headquartered in St. Louis, the company combines industry expertise with a broad product selection and a national distribution network.

With 2,000 employees across the United States and Canada, mSupply delivers speed and reliability at scale, with a vast product inventory and same-day shipping. Its family of brands is focused on making sure customers always get the Right Products. Right Now.™

For more information, visit mSupply.com.

Job Summary

The Software Engineer designs, builds, tests, and supports mSupply's warehouse management applications, with a primary focus on C#/.NET backend services (Marci Web Service and Marci Dashboard). The role also contributes to the native Android (Kotlin) Marci app used on Zebra rugged devices by warehouse associates and operations teams across our distribution centers. You will work in an Agile Scrum team with product owners, QA, and senior engineers. The backend currently runs on .NET Framework, and the team is planning a migration to .NET 8, so you will help maintain the current platform and prepare it for modernization. This is a fully remote position based in the United States.

Job Duties & Responsibilities

• Build and maintain backend Web APIs and services using C#, ASP.NET Web API, and Entity Framework on .NET Framework, and contribute to the planned migration to .NET 8
• Own defined modules of Warehouse Web Service and Dashboard (ASP.NET MVC), from design through production support
• Design and optimize SQL Server schemas, stored procedures, and queries that support warehouse workloads (receiving, put-away, picking, cycle counts)
• Build and support integrations with ERP and third-party systems
• Develop, test, and maintain features in the native Android Marci app using Kotlin and Jetpack libraries, including barcode scanner and rugged device integration
• Deploy, monitor, and troubleshoot .NET services hosted in Microsoft Azure (App Service, Storage, Application Insights)
• Build and maintain CI/CD pipelines in Azure DevOps for .NET services and Android (Gradle) builds
• Write clean, well-tested, and well-documented code that follows .NET, Kotlin, and Android best practices
• Participate in Scrum ceremonies, code reviews, and technical design discussions
• Investigate and resolve defects, crashes, and performance issues across mobile and backend tiers
• Support warehouse rollouts and production issues in partnership with operations teams
• Continuously learn new technologies, tools, and patterns to improve individual and team effectiveness

Qualifications (Required)

• Bachelor's degree in Computer Science, Software Engineering, or a related technical field, or equivalent professional experience
• 3+ years of professional C# development experience, including ASP.NET Web API and Entity Framework on .NET Framework
• Strong SQL Server skills: schema design, stored procedures, and query tuning
• Experience consuming and building REST APIs, including authentication and error handling
• Familiarity with Git, pull-request-based workflows, and CI/CD concepts (Azure DevOps preferred)
• Working knowledge of software engineering fundamentals: OOP, SOLID principles, and unit testing (xUnit, NUnit, or similar)
• Working knowledge of Android development in Kotlin, or the ability to ramp up quickly (Java experience counts)
• Written and verbal communication skills suited to a distributed, remote team

Qualifications (Preferred)

• Experience with .NET Core or .NET 8 and with migrating applications off .NET Framework
• Experience with ASP.NET MVC
• Android Jetpack (ViewModel, Flow, Navigation, Room, WorkManager), Hilt/Dagger, and Jetpack Compose
• Zebra device experience (TC72, TC73, TC701) and scanner integration (DataWedge or EMDK)
• Experience deploying Android apps through MDM (SureMDM or similar)
• Azure Functions, Key Vault, and Azure SQL
• Warehouse management, ERP, or supply chain systems experience
• Hands-on experience with AI-assisted development tools (Claude Code, GitHub Copilot, Cursor) to speed delivery, improve code quality, and automate routine engineering tasks

Physical Demands & Work Environment

• Primarily sedentary work, requiring extended periods of sitting while working at a computer
• Ability to communicate effectively in person, via phone, and through virtual collaboration tools
• Occasional standing, walking, and movement during meetings, site visits, or travel
• Ability to lift and carry light materials (up to 15 lbs) occasionally, such as a laptop or presentation materials
• Ability to travel periodically for business needs, including visiting distribution centers, suppliers, stores, or industry events
• Office environment includes standard business equipment such as computers, phones, and conferencing tools

What We Offer : We prioritize your well-being from day one with a comprehensive benefits package that includes:

• Medical, dental, vision, and prescription coverage effective immediately
• 401(k) plan with company contributions
• Life insurance and short- and long-term disability coverage
• HSA/FSA options and an Employee Assistance Program (EAP)
• Paid time off, including vacation, holidays, and personal days
• Weekly pay, employee discounts, and more

Equal Employment Opportunity & Pre-Employment Requirements

mSupply is an Equal Opportunity Employer. We make employment decisions without regard to sex, age, race, color, creed, religion, national origin, citizenship or immigration status, sexual orientation, gender identity or expression, disability, genetic information, marital status, veteran or military status, or any other status protected by applicable federal, state, or local law. #mSupply We are committed to providing reasonable accommodations for qualified individuals with disabilities and to applicants with sincerely held religious beliefs, in accordance with applicable law. To request a reasonable accommodation, please contact careers@msupply.com. Final offers of employment may be contingent upon completion of job-related pre-employment checks and screenings permitted by law for the position. For roles that require operation of a company vehicle, a Motor Vehicle Record (MVR) check may also be conducted to determine insurability. This employer participates in E-Verify to confirm employment eligibility in the United States.

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