Senior Dotnet Developer

Job Title: Senior .NET Application Developer

Location: Lansing, MI, 48909 (Hybrid)

Duration: 6+ months contract

Job Responsibilities:

Application and Solution Development: Design, develop, and maintain complex enterprise applications using ASP.NET MVC 5 (Windows), C#, .NET Framework 4.8, SOAP

and REST APIs, and modern web technologies. Maintain older ASP.NET (Web Forms) applications, Microsoft RDLC and Crystal Reports.

Full Stack Development including Frontend Development and maintenance: HTML5, CSS3, JavaScript including ECMAScript 5/6, asynchronous operations and adherence to

WCAG 2.1 and modern web development standards.

Database Development and Modeling: Create and maintain database schemas, stored procedures, and data access layers. Implement business rules, validation, and data integrity controls across Oracle 19c or similar relational systems.

Solution Lifecycle Management: Participate in all phases of the application lifecycle, from requirements gathering and design to development, testing, deployment, and maintenance.

Utilize source control and follow best practices for deploying solutions across development, testing, and production environments.

Support and Troubleshooting: Providing technical support to users (both business and technical), troubleshooting with apps, databases, resolve performance problems, and address security concerns.

Collaboration and Communication: Work directly with business stakeholders, communicate effectively with technical teams, and assist end-users. Demonstrates strong

customer service awareness and orientation.

Ongoing Support: Provide ongoing support for client users by maintaining and enhancing existing .NET applications. Demonstrate flexibility to support multiple legacy

applications and shift between systems as project needs evolve

Required Qualifications:

8+ years of extensive .NET Development experience: Proven experience designing and building complex applications using C#, ASP.NET Web Forms/MVC (Framework 4.8) and

ASP.NET MVC 5 (Windows) ASP.NET (Web Forms, common architectural patterns, and API design.

6+ years of Database Engineering Expertise experience: Experience modeling relational databases, creating schemas, and optimizing queries. Able to manage roles, security, and data quality in an enterprise Oracle 19c environment. Strong Oracle SQL and PL/SQL using Toad/OSD

6+ years of Frontend Development experience: Demonstrated background in HTML5, CSS3, JavaScript including ECMAScript 5/6, asynchronous operations and adherence to

WCAG 2.1 and modern web development standards.

4+ years of Backend Services and Integrations experience: Strong understanding of web service design, authentication and authorization mechanisms including authentication flows (OAuth2/OIDC), secure API integration, and robust error handling patterns.

Troubleshooting and problem-solving; including the ability to diagnose and resolve complex technical issues utilizing strong analytical and problem-solving skills.

Strong written and verbal communication; discussing application errors with users and other technical staff, describing technology to diverse user groups, preparing

documentation.

Preferred Qualifications

Experience creating custom .NET libraries, reusable components, integration connectors, or using PowerShell for automation tasks.

Experience with ASP.NET Core, understanding of reusable components, dependency injection, and modern frontend technologies like Blazor.

Top Skills & Years of Experience:

8+ years of extensive .NET Development experience: Proven experience designing and building complex applications using C#, ASP.NET Web Forms/MVC (Framework 4.8) and ASP.NET MVC 5 (Windows) ASP.NET (Web Forms, common architectural patterns, and API design.

6+ years of Database Engineering Expertise experience: Experience modeling relational databases, creating schemas, and optimizing queries. Able to manage roles, security, and data quality in an enterprise Oracle 19c environment. Strong Oracle SQL and PL/SQL using Toad/OSD

6+ years of Frontend Development experience: Demonstrated background in HTML5, CSS3, JavaScript including ECMAScript 5/6, asynchronous operations and adherence to WCAG 2.1 and modern web development standards.

4+ years of Backend Services and Integrations experience: Strong understanding of web service design, authentication and authorization mechanisms including authentication flows (OAuth2/OIDC), secure API integration, and robust error handling patterns.