REQT: Direct Client: Senior .NET Developer @ Lansing, MI

Senior .NET Developer
Lansing, MI – Hybrid
12-Month Contract (Possible Extension)

Interview Process: MS Teams Video Interview
Hybrid: Resource must work onsite two days per week. Local candidates preferred; non-local candidates must be willing to relocate from Day 1.

Position Overview

We are seeking a Senior .NET Developer to support enterprise-level application development initiatives within a State Government agency. This role involves designing, developing, enhancing, and maintaining mission-critical applications that support public-facing and internal systems. The ideal candidate will be responsible for building secure, scalable, and high-performing web applications using modern Microsoft technologies while adhering to government security and compliance standards. The selected resource will collaborate closely with business analysts, database administrators, architects, and project managers to translate functional requirements into technical solutions. This role requires strong experience in API development, database optimization, cloud integration, and application lifecycle management. The candidate must demonstrate the ability to work in structured environments with formal documentation, change management, and release governance processes.

Key Responsibilities

• Design, develop, and maintain enterprise-grade web applications using C#, ASP.NET Core, and .NET Framework technologies.
• Develop RESTful APIs and integrate external and internal systems while ensuring secure authentication and authorization mechanisms.
• Write, optimize, and maintain complex SQL queries, stored procedures, and database objects within SQL Server environments.
• Participate in application architecture discussions and contribute to the design of scalable, modular, and reusable components.
• Implement CI/CD pipelines using Azure DevOps to automate build, testing, and deployment processes.
• Perform code reviews and enforce coding standards, security best practices, and performance optimization techniques.
• Troubleshoot production issues, perform root cause analysis, and implement corrective solutions.
• Collaborate with business stakeholders to clarify technical requirements and translate them into technical design documents.
• Support application testing activities including unit testing, integration testing, and deployment validation.
• Document technical specifications, application workflows, and system configurations for long-term maintenance.
• Ensure compliance with state security policies, audit requirements, and data protection standards.
• Participate in sprint planning, backlog grooming, and retrospective meetings within Agile frameworks.

Required Qualifications

• Bachelor’s degree in Computer Science, Information Systems, or related technical discipline.
• 5+ years of hands-on experience developing applications using C#, ASP.NET Core, and .NET Framework.
• Demonstrated experience building and consuming RESTful APIs and integrating third-party services.
• 5+ years of experience writing complex SQL queries, optimizing stored procedures, and tuning database performance in SQL Server.
• Experience implementing secure authentication mechanisms such as OAuth2, JWT, or Azure AD integration.
• Hands-on experience configuring and deploying applications within IIS and Windows Server environments.
• Experience working within Agile or hybrid Agile/Waterfall project environments.
• Proven ability to produce technical documentation including design documents and system diagrams.
• Experience using Git for source control and Azure DevOps for release management.
• Ability to independently analyze requirements and deliver complete, tested solutions within deadlines.

Preferred Qualifications

• Experience deploying and managing applications in Microsoft Azure cloud environments.
• Experience designing microservices-based architectures and containerized applications.
• Prior experience supporting State Government or Public Sector projects.
• Familiarity with Power Platform integrations and SharePoint-based workflows.
• Experience implementing logging, monitoring, and telemetry solutions for enterprise applications.
• Knowledge of OWASP security principles and secure coding standards.
• Experience supporting large-scale modernization or legacy system migration projects.

Behavioral & Professional Expectations

• Demonstrate the ability to clearly communicate technical concepts to both technical and non-technical stakeholders.
• Proactively identify performance bottlenecks and propose measurable improvements to system efficiency.
• Manage multiple work assignments while meeting established deadlines and quality standards.
• Collaborate effectively within cross-functional teams including architects, analysts, and QA testers.
• Exhibit accountability by taking ownership of assigned modules from development through production deployment.
• Adapt quickly to evolving project priorities and regulatory changes within government environments.
• Maintain professionalism in client-facing meetings and status reporting sessions.
• Demonstrate strong analytical thinking and attention to detail when resolving defects and system issues.