Senior .NET Full Stack Developer l No Sponsorship Available

Senior .NET Full Stack Developer
Job Details:
Compensation: $110,000 – $140,000
Work Environment: Hybrid (2 days in office)
Office Location: Oakbrook, IL
Benefits: Medical, Dental, Vision, 401(k), PTO

Senior .NET Full Stack Developer
Primary Responsibilities

• Design, develop, and maintain enterprise-grade web applications and APIs using .NET Core and C#, with a strong emphasis on clean, maintainable, and high-performance code.


• Write well-structured, testable, and documented .NET code following established development standards and design patterns.


• Build responsive, user-friendly, and accessible UI components using Angular, React, or Blazor, with a focus on usability and user experience.


• Develop, maintain, and optimize SQL Server databases, including complex queries, stored procedures, indexing strategies, and performance tuning.


• Ensure efficient and reliable data access layers between application services and SQL Server.


• Collaborate with business stakeholders to translate requirements into effective UI designs and functional application solutions.


• Develop and maintain Power BI dashboards and SSRS reports supporting operational and regulatory needs.


• Integrate internal applications with external systems, data providers, and regulatory platforms.


• Ensure application security, data integrity, and compliance with HIPAA, SOC 2, and industry best practices.


• Participate in code reviews, architectural discussions, and technical solution design.


• Support CI/CD pipelines and DevOps best practices using Azure DevOps.


• Mentor junior developers and promote best practices across the development team.

Senior .NET Full Stack Developer
Minimum Educational & Experiential Qualifications

• Bachelor’s degree in Computer Science, Information Systems, or a related field.


• 10+ years of professional experience in enterprise software development, preferably in regulated industries such as insurance or finance.


• Expert-level experience with .NET Core and C#, including API development and application architecture.


• Strong hands-on expertise with SQL Server, including performance tuning, query optimization, and database design.


• Proven experience developing modern front-end applications using Angular, React, or Blazor.


• Experience building and supporting Power BI dashboards and SSRS reports.


• Strong understanding of application security, data protection, and compliance requirements.


• Excellent analytical, problem-solving, and communication skills with the ability to work across technical and business teams.

Build a rewarding long-term career with us at CFS—when we knock, doors open.

Timing is everything. Whether you are aggressively in a job search or simply passive and looking for the ideal position, we would like to have the chance to share our opportunities with you. We specialize in placement of IT professionals. Please contact me for more information about this role as well as other opportunities.

#INJUN2026

#ZRCFSTECH

#LI-AC2

Click here to apply online