Senior .NET Developer

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 systemsDuties:

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