Senior .NET Developer — Remote/Hybrid (Wisconsin)

IO Datasphere; Madison (WI); Hybrid; USD 90,000 - 130,000; Full time

Job summary

IO Datasphere in Madison, WI seeks a senior .NET developer to design, build, and maintain web applications using ASP.NET MVC and C#. You will work on front-end and back-end, APIs, and participate in code reviews while aligning with Agile processes.

Ideal candidates have 8+ years of .NET experience, strong SQL Server skills, and familiarity with Okta/Entra, GitHub, JIRA. This role offers hybrid work options within Wisconsin and opportunities to influence architecture.

Qualifications

• 8+ years' experience with .NET web applications and C#.
• Strong SQL Server experience including stored procedures and views.
• Experience with full SDLC, Agile practices and documentation.
• Familiarity with Okta/Entra, GitHub and JIRA.
• Knowledge of authentication/authorization techniques and design patterns.

Responsibilities

• Designs, develops, and implements web-based applications using .NET framework.
• Develop front-end and back-end web apps and web APIs.
• Follow Agile lifecycles, document, code, and test.
• Debug, research, and resolve technical issues.
• Collaborate with team on design and development of web apps.
• Contribute to code reviews, quality coding, and production support.

Skills

ASP.NET MVC

C#

Analytical thinking

Post-production support

Technical documentation

Design patterns

SDLC / PM principles

Authentication/Authorization

MS SQL Server

TDD experience

Unit & smoke tests

MS Access

Data modeling

GitHub & JIRA

Okta / Entra

Financial app development

Automated testing practices

Job description

IO Datasphere in Madison, WI seeks a senior .NET developer to design, build, and maintain web applications using ASP.NET MVC and C#. You will work on front-end and back-end, APIs, and participate in code reviews while aligning with Agile processes.

Ideal candidates have 8+ years of .NET experience, strong SQL Server skills, and familiarity with Okta/Entra, GitHub, JIRA. This role offers hybrid work options within Wisconsin and opportunities to influence architecture.