Senior .NET Engineer - Enterprise Web Apps & APIs

Selby Jennings; Chicago (IL); On-site; USD 120,000 - 160,000; Full time

Job summary

Selby Jennings is assisting an investment manager in Chicago to hire a Senior Software Engineer. The role focuses on designing, building, and sustaining enterprise web applications on the Microsoft .NET stack, with emphasis on scalable, secure, and high-performance systems.

Responsibilities include creating RESTful APIs, database design and optimization, and applying architecture principles to deliver reliable platforms.

Qualifications

• BS/MS in Computer Science or related field.
• 6–8 years of professional software development experience in enterprise web applications.
• Strong background in Microsoft .NET ecosystem, including .NET Core / ASP.NET Core development.
• Experience designing, developing, and consuming RESTful Web APIs using ASP.NET Core.
• Strong relational database design skills, including stored procedures/triggers, query optimization, and performance tuning.
• Solid understanding of architecture principles for building robust, scalable, secure, and maintainable enterprise applications.
• Experience integrating common UI and productivity component libraries into enterprise applications.
• Experience developing data-intensive applications, dashboards, reporting solutions, and workflow-based systems.
• Proven ability to support and maintain business-critical applications.

Responsibilities

• Design, develop, and maintain enterprise web-based applications using the .NET stack.
• Apply architecture principles to deliver scalable, reliable, user-focused solutions.
• Build and consume RESTful Web APIs for integrated business applications.
• Perform relational database design, development, and optimization for high performance.
• Enhance core technology platforms through innovative development.
• Ensure strong technical design, performance, maintenance, and security across applications.

Education

B.S. / M.S. in Computer Science

Job description

Selby Jennings is assisting an investment manager in Chicago to hire a Senior Software Engineer. The role focuses on designing, building, and sustaining enterprise web applications on the Microsoft .NET stack, with emphasis on scalable, secure, and high-performance systems.

Responsibilities include creating RESTful APIs, database design and optimization, and applying architecture principles to deliver reliable platforms.