Jobs · Engineering · Illinois

Senior .NET Full Stack Developer

CFS · Villa Park, IL · 2 wk ago
Engineering$110k–$140k/yrFull-time

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.

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.

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