Senior .NET Developer

Columbus, OH
Contracted
Experienced
Location: Columbus, OH
Position Type: Onsite
Contract Length: Long-term with annual extensions

Position Overview:
This role serves as the technical lead for application migration and modernization efforts, combining architectural decision-making with hands-on .NET development in a fast-paced, high-visibility environment. The position partners closely with IT leadership and cross-functional teams to assess existing systems, define scalable solutions, and deliver high-quality applications.

Required Qualifications:

  • 7+ years of professional experience in .NET application development
  • Demonstrated experience taking ownership of existing applications and codebases, including maintenance and enhancement
  • Deep expertise in C#, .NET, and Entity Framework for enterprise application development
  • Strong experience designing and building RESTful APIs and working with GraphQL
  • Advanced experience with SQL Server, including developing stored procedures and implementing indexing strategies
  • Proven experience utilizing GitHub Enterprise for source control and development workflows
  • Demonstrated experience leading development efforts and mentoring other developers
  • Strong written and verbal communication skills for technical and non-technical audiences

Highly Desired, not required:

  • Experience migrating or modernizing legacy MVC applications
  • Experience developing front-end solutions using React, Vite, and Node.js
  • Experience stabilizing and improving applications in active production environments
  • Experience working in public sector or other highly visible, high-impact environments
  • Experience supporting financial, tax, or property-related systems
Duties:
  • Review existing MVC-based applications to identify migration and modernization requirements
  • Define and recommend application architecture patterns and technical standards
  • Break down technical initiatives into milestones, deliverables, and actionable development tasks
  • Provide development estimates and support overall project planning efforts
  • Lead hands-on development of .NET applications and APIs (REST & GraphQL)
  • Design, develop, and optimize SQL Server stored procedures, indexes, and queries
  • Ensure best practices for Entity Framework Code First and data access patterns
  • Develop and enhance front-end components using React and PrimeReact
  • Collaborate with business analysts to translate functional requirements into technical designs
  • Partner with development teams, business analysts, and project management to define scope and sequencing
  • Mentor developers through code reviews, guidance, and troubleshooting support
  • Support development workflows and version control using GitHub Enterprise
  • Communicate progress, risks, and technical recommendations to leadership
  • Perform additional related duties as needed
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