Sr Applications Developer

Sonepar USA; Broomfield (CO); Hybrid; USD 100,000 - 150,000; Full time

Benefits offered by this job

Healthcare plans

Dental & Vision

Paid time off

Parental leave

401(k) with company match

Professional development

Job summary

Sonepar USA is seeking a Senior .NET Application Developer to join our hybrid, Colorado-based technology team. The role focuses on designing, developing, and maintaining enterprise-scale software for critical operations across the organization.

You will work with cross-functional teams on front-end and back-end solutions, ensuring high performance, scalability, and secure architecture. A Bachelor's degree and 3–5 years of Full-Stack experience are expected.

Qualifications

• Bachelor's degree in Computer Science, IT, or related field.
• 3–5 years of experience as a Full-Stack Application Developer in a large organization.
• Experience designing, developing, and supporting .NET apps (ASP.NET, MVC), APIs, modern UI, and scalable web applications.

Responsibilities

• Participate in front-end and back-end development.
• Design, develop, and maintain end-to-end software solutions.
• Build scalable, secure, and high-performing web applications.
• Troubleshoot and resolve issues to ensure reliability.
• Collaborate with partners, product teams, and other developers on solutions.
• Contribute to enhancements, integrations, and continuous improvement.

Skills

Team collaboration

Problem solving

Education

Bachelor's degree in Computer Science or related field

Tools

ASP.NET MVC

C#

RESTful Web API

JavaScript

TypeScript

HTML/CSS

SQL Server

Visual Studio

XML/JSON

Job description

Sonepar Management Group (SMG) supports our Sonepar brands (i.e. operating companies) in the US through a shared services model. These services include, but are not limited to: human resources, finance, digital enterprise, supply chain, vendor relations, marketing, legal, and communications. The SMG teams enable our brands to do business in their local regions while taking advantage of the scale and collective resources of a global enterprise.
SMG fosters an inclusive and supportive culture. We offer leadership and development programs to help you reach your career goals. Our associates share in our collective achievements, and we firmly believe that Sonepar is "Powered by Difference." By driving technology and innovation, enabling paths to success, and caring about our people and their families, we have built a workplace where you can build a fulfilling career.

Sonepar is seeking a Senior .NET Application Developers to join our growing technology team. This is an exciting opportunity to work on innovative, enterprise-scale solutions, contribute to high-impact projects, and collaborate with cross-functional teams in a dynamic environment.

As a member of our development team, you will play a key role in designing, developing, and maintaining high-quality software applications that support business-critical operations across the organization.

Location:Broomfield, Colorado
Work Arrangement:Hybrid

Key Responsibilities

• Participate in both front-end and back-end application development.
• Design, develop, and maintain end-to-end software solutions.
• Build scalable, secure, and high-performing web applications.
• Troubleshoot, diagnose, and resolve application issues to ensure optimal performance and reliability.
• Collaborate with business partners, product teams, and fellow developers to deliver innovative technology solutions.
• Contribute to application enhancements, integrations, and continuous improvement initiatives.

Required Qualifications

Qualified candidates must:

• Hold a Bachelor's degree in Computer Science, Information Technology, or a related field.
• Possess a minimum of three-five (3-5) years of experience as a Full-Stack Application Developer within a large and complex organization.
• Demonstrate experience designing, developing, and supporting:
  • .NET applications utilizing ASP.NET and MVC frameworks
  • Application Programming Interfaces (APIs)
  • Modern, responsive web user interfaces
  • Highly scalable web-based applications and components
  • System integrations utilizing XML, JSON, and related technologies
  • Productivity and business applications leveraging web and mobile technologies

Technical Skills & Experience

Candidates should demonstrate strong proficiency in the following areas:

• Microsoft .NET Framework and ASP.NET MVC
• C# and Object-Oriented Design principles
• Visual Studio IDE
• Microsoft SQL Server and relational database technologies
• RESTful services and Web API development
• End-to-end web application development, from user interface through data access layers
• Rich web application UI development
• JavaScript, TypeScript, jQuery, JSON, HTML, and CSS
• Cross-browser application development and support
• Application architecture, design patterns, and scalable solution development

Work Authorization Requirement

Applicants must be legally authorized to work in the United States for Sonepar on a full-time basis. Sonepar does not provide employment visa sponsorship now or in the future for these positions.

Why Join Sonepar?

At Sonepar, you will have the opportunity to work with cutting-edge technologies, collaborate with talented professionals, and build solutions that drive innovation across one of the world's leading electrical distribution organizations. We are committed to fostering a culture of continuous learning, professional growth, and technical excellence.

#LI-CM1

What We Offer You

We offer great family-friendly benefits to full-time associates:

• Healthcare plans
• Dental & vision
• Paid time off
• Paid parental leave
• 401(k) retirement savings with company match
• Professional and personal development programs

• Opportunity to become a shareholder
• Employer-paid short- and long-term disability
• Employer-paid life insurance for spouse and dependents
• Robust wellness program
• Gym reimbursement
• Employee Assistance Program (EAP)

We're proud to be a military-friendly company, and our many employee resource groups (ERGs) help you make connections and feel supported.

Learn More About Us

Get to know us on LinkedIn, Facebook, Instagram and Youtube and learn how we're "Powering Progress for Future Generations."

Learn more about us and our Sonepar family of brands: us-en/about-us

Equal Employment Opportunity Statement

Sonepar is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to their race, color, creed, religion, national origin, citizenship status, ancestry, sex, age, physical or mental disability unrelated to ability, marital status, family responsibilities, pregnancy, genetic information, sexual orientation, order of protection status, protected veteran or military status, or an unfavorable discharge from military service, or any other categories protected by federal, state or local law.

Sonepar and our family of brands are committed to the full inclusion of all qualified individuals. In keeping with our commitment, we will take the steps to assure that people with disabilities are provided reasonable accommodations. Accordingly, if a reasonable accommodation is required to fully participate in the job application or interview process, to perform the essential functions of the position, and/or to receive all other benefits and privileges of employment, please call or email .