JOBSEARCHER

Full Stack Software Engineer (.NET/C#)

SundayyDenver, COL5 SeniorSeptember 1st, 2026
About The CompanyJ. J. Keller & Associates, Inc. is a leading provider of safety, compliance, and regulatory solutions dedicated to creating safer and more respectful workplaces across North America. Celebrating over 70 years of service, the company has established a strong reputation for delivering innovative products and services that help organizations meet their safety obligations and foster a culture of safety. As a family-owned business, J. J. Keller prides itself on its commitment to quality, integrity, and continuous improvement, making it a trusted partner for businesses of all sizes. The company offers a comprehensive benefits package, a collaborative work environment, and a focus on employee development, making it an excellent place for technology professionals to grow their careers.About The RoleWe are seeking a Full-Stack Software Engineer with expertise in .NET/C# and modern web technologies to join our dynamic development team. In this role, you will be instrumental in designing, developing, testing, and supporting customer-facing web applications that are critical to our business operations. You will work across the full technology stack, utilizing tools such as React, ASP.NET MVC, RESTful APIs, and SQL Server. The ideal candidate is a collaborative problem-solver who enjoys tackling complex technical challenges and leveraging AI-assisted development tools like GitHub Copilot to enhance productivity, code quality, and innovation. You will participate in the entire Software Development Life Cycle (SDLC), from requirements gathering to deployment and support, while leading small to mid-sized projects and promoting best practices in secure coding and application performance. This role offers the opportunity to contribute to a forward-thinking organization that values continuous learning, technical excellence, and impactful solutions.QualificationsAssociate's degree in Computer Science, Information Technology, or a related field; Bachelor's degree preferred3+ years of experience in software or web development, including analysis, design, coding, and testingProficiency in object-oriented programming principles and practicesStrong understanding of SQL Server development and database structuresHands-on experience building full-stack web applications using Modern Web Technologies and .NET/C#Experience developing and consuming RESTful APIs and integrating frontend applications with backend servicesFamiliarity with AI-assisted development tools such as GitHub Copilot or similar platformsKnowledge of secure full-stack development practices, including authentication, authorization, input validation, and data securityUnderstanding of SDLC processes and best practicesAbility to evaluate, test, and refine AI-generated code to ensure quality and complianceExcellent problem-solving skills and ability to work effectively in a team environmentResponsibilitiesDevelop and maintain scalable, secure, and high-performance full-stack web applications using Modern Web Technologies, ASP.NET MVC, .NET/C#, REST APIs, and SQL ServerCreate and support complex backend services, business logic, system integrations, and APIs with a focus on security and efficiencyUtilize AI-assisted development tools throughout the SDLC to support requirements analysis, solution design, coding, testing, and documentationReview and validate AI-generated code to ensure it meets quality, security, and organizational standardsIdentify opportunities to leverage AI and automation to improve developer productivity, testing coverage, and software deliveryPerform programming tasks related to new development or maintenance of existing applications and websitesAnalyze user needs and assess the impact of technical changes on other system componentsPromote best practices in secure coding, including OWASP security principles, to mitigate common vulnerabilitiesMaintain accurate and comprehensive technical documentation for all development activitiesProvide technical support and troubleshooting assistance to support staff and end-usersLead small to mid-sized development projects, coordinating with cross-functional teams and stakeholdersCollaborate with Website and Database Administrators to optimize server configurations, database integrity, and deployment processesStay current with emerging technologies and trends relevant to full-stack development and AI integrationBenefitsMedical, Dental, and Vision Insurance401(k) Retirement Plan with Profit SharingPaid Time Off and HolidaysProfessional Development OpportunitiesWork from Home/Remote Work OptionsCollaborative and Inclusive Work EnvironmentRecognition Programs and Employee Wellness InitiativesEqual OpportunityJ. J. Keller & Associates, Inc. is an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, disability, or any other protected status in accordance with applicable laws and regulations.