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About the Company

 QT9 Software builds the quality and operations platform purpose-built for regulated manufacturers. Our QMS is trusted by 1,200+ companies across medical devices, pharmaceuticals, aerospace, food & beverage, and other regulated industries to manage compliance, documentation, and audit readiness. Our ERP brings those same companies a fully integrated operations platform — inventory, production, purchasing, and traceability — built to work natively with the quality system, not alongside it as an afterthought.

We are the only platform that gives a regulated manufacturer a complete, pre-validated quality and operations solution without the enterprise price tag or the 18-month implementation. Our customers don't just use us — they rely on us when the auditor walks in the door.

Advantages of working at QT9 Software

• Strong culture where people are our most valuable asset.
• Prime location near Chicago Premium Outlets.
• Modern industrial warehouse built in 2019 with 24 ft. ceilings.
• Cool amenities from Golf Simulator, Sport Court and Arcade games.
• Growing team with a small company feel.
• Provide you with the support you need to succeed in your role.
• Competitive compensation package with great benefits.

Job Description

QT9 Software is seeking an experienced .NET Developer for our QMS team. In this role, you will design, develop, and maintain complex .NET applications. Working closely with project managers and senior developers, you will deliver high-quality software solutions that meet business requirements.

To be considered, candidates must have .NET experience and a strong background in C#, ASP.NET MVC/Web Forms, Web API, and SQL Server. This position is full-time and onsite in Aurora, IL. We will be relocating to Batavia, IL early 2027.

Job Responsibilities 

• Design, develop, and maintain .NET applications using C#, ASP.NET MVC/Web Forms, Web API, and SQL Server
• Collaborate with project managers and senior developers to understand project requirements and priorities
• Write clean, maintainable code following best practices and coding standards
• Perform unit testing and debugging to ensure software quality and reliability

• Bachelor’s degree in computer science, Engineering, or related field.
• 1+ years of professional development experience.
• Proficiency in C#, ASP.NET MVC/WEB FORMS, and SQL Server.
• Strong understanding of object-oriented programming principles.
• Excellent problem-solving and analytical skills.
• Ability to work effectively in a fast-paced environment.

At QT9 Software, we build cloud-based SaaS and on-premise QMS and ERP solutions that help companies in regulated industries simplify compliance, improve quality, and operate more efficiently. Our platform replaces spreadsheets and disconnected systems with a single, scalable platform used by 1,200+ organizations worldwide.

Founded in 2005, we have grown from a startup into a globally trusted software company while maintaining a collaborative, product focused culture. We design intuitive, configurable solutions that teams can implement quickly and adopt at scale.

At QT9, your work has real impact. You will be trusted to own your work. Your ideas will be heard, and your contributions will directly shape the platform and customer experience. Whether you are building features, supporting customers, or improving internal processes, you will see the results of your work in real time.

We are a growing, engaged team that values collaboration, accountability, and continuous improvement. Our environment is team oriented, where people take pride in their work and hold a high standard for performance.

Headquartered in Aurora, Illinois (moving to downtown Batavia in 2027), QT9 offers the opportunity to grow your career while making a tangible difference.