SystemDomain, a leading provider of information technology consulting Services firm based in Chicago is looking for IT Professionals. Our high-performance consultants offer technological expertise, strategic insights, and knowledge of their industry experience. Established in 1999, we partner with our customers to build stronger innovative business solutions and to solve their most important and complex business challenges. For more information about SystemDomain, please visit
Job Title: Senior .NET Application Architect / Lead Developer
Location: Columbus, OH (Onsite)
Duration: 4 Months
Employment Type: Full Time
Position Overview
We are seeking a Senior .NET Application Architect / Lead Developer to provide technical leadership for application migration and modernization initiatives following a recent enterprise system implementation. This is a hands-on, delivery-focused role that blends architectural leadership with active development responsibilities in a fast-paced, high-visibility environment.
The selected candidate will work closely with IT leadership to assess existing MVC-based applications, define future-state architecture, and lead development efforts to ensure stable, scalable, and secure solutions.
Key Responsibilities
- Review and assess existing MVC-based applications to identify modernization and migration needs
- Define and recommend application architecture patterns and technical standards
- Decompose technical initiatives into milestones, deliverables, and development tasks
- Provide development estimates to support project planning and delivery
- Lead hands-on development of .NET applications and RESTful APIs
- Design, develop, and optimize SQL Server stored procedures, indexes, and queries
- Apply best practices for Entity Framework and data access patterns
- Collaborate with business analysts to translate functional requirements into technical designs
- Partner with project management to define scope, sequencing, and delivery timelines
- Mentor developers through code reviews and technical guidance
- Support source control and development workflows using GitHub Enterprise
- Communicate technical progress, risks, and recommendations to technical leadership
- Perform additional related duties as assigned
Required Qualifications
- 8+ years of professional .NET application development experience
- Strong expertise in C#, .NET, MVC, and Entity Framework
- Proven experience owning and enhancing large, existing codebases
- Advanced experience designing and developing RESTful APIs; exposure to GraphQL
- Advanced SQL Server skills, including stored procedures, indexing, and performance tuning
- Hands-on experience using GitHub for source control and collaboration
- Demonstrated ability to lead development efforts and mentor technical teams
- Strong written and verbal communication skills
Preferred Qualifications
- Experience modernizing or migrating legacy MVC applications
- Experience with React, Vite, and Node.js
- Experience supporting applications in active production environments
- Experience working in public-sector or highly visible enterprise environments
- Experience supporting financial, tax, or property-related systems
Contact : , peeyush at systemdomaininc dot com
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Equal Opportunity Employer: Race, Color, Religion, Sex, Sexual Orientation, Gender Identity, National Origin, Age, Genetic Information, Disability, Protected Veteran Status, or any other legally protected group status.
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