Confidential

Job Overview
We are seeking an experienced Full Stack Software Developer to build and maintain applications that integrate with our ERP system (built in C# using the .NET framework), connects to a SQL database, and supports interaction with Excel spreadsheets (Excel API). The ideal candidate is proficient across the tech stack and capable of building secure, scalable, and user-friendly internal tools that improve business workflows.

Knowledge of AI development tools a must!

Responsibilities

· Design and develop a web application to support internal operations and reporting

· Interface with our ERP system built in C# / .NET, using APIs or shared data layers

· Develop backend services that read/write from a SQL Server database

· Implement features for importing/exporting and syncing Excel files

· Build responsive and intuitive user interfaces using modern frontend technologies

· Ensure security, performance, and data accuracy across the application

· Document the architecture, interfaces, and functionality for internal use

· Work closely with business users to understand requirements and iterate accordingly

Requirements

· 5+ years of full stack web development experience

· Proficient in C# and the .NET Framework (.NET 6 or later preferred)

· Strong knowledge of SQL and relational database design (SQL Server preferred)

· Frontend experience with JavaScript, HTML, CSS, and frameworks such as React, Vue, or Angular

· Experience working with Excel files (e.g., importing/exporting XLSX, using libraries or interop tools)

· Familiarity with secure API design and data integration practices

· Strong problem-solving, documentation, and communication skills

Preferred Qualifications

· Experience integrating with or extending ERP systems in .NET environments

· Familiarity with Excel automation (e.g., VBA, macros, or C# Excel libraries like EPPlus or ClosedXML)

· Background in business systems for manufacturing, logistics, or finance

· Understanding of secure deployment and internal hosting infrastructure

Job Type: Full-time

Pay: $120,000.00 - $150,000.00 per year

Benefits:

• 401(k)
• 401(k) matching
• Dental insurance
• Flexible schedule
• Health insurance
• Paid time off
• Professional development assistance
• Vision insurance
• Work from home

Location:

• Downers Grove, IL 60515 (Required)

Work Location: In person