Position: .Net Lead
Location: Chicago, IL (Onsite) local only
Duration: Long-Term
Max Rate: $65/hr on C2C
Experience: 12+ Years
Visa: No-GC (If the candidate is on a GC, they must be willing to work on 1099/W2)
Recommended Job Title
Senior .NET Developer / Lead Application Developer
Role Summary
We are seeking an experienced .NET developer to lead the design, development, enhancement, and modernization of business-critical applications. The candidate will work closely with business stakeholders, technical teams, and support teams to deliver scalable, secure, and maintainable solutions across web applications, backend services, APIs, databases, and integration platforms.
Key Responsibilities
o Design, develop, test, deploy, and maintain enterprise applications using C#, ASP.NET, ASP.NET Core, MVC, Web API, and related Microsoft technologies.
o Modernize legacy .NET applications and services to improve performance, reliability, maintainability, and user experience.
o Build and consume RESTful APIs and web services to support integrations with internal and external systems.
o Develop responsive user interfaces using HTML5, CSS, Bootstrap, JavaScript, jQuery, Angular, and React where applicable.
o Create and optimize SQL queries, stored procedures, triggers, indexes, and database objects across SQL Server and other relational databases.
o Participate in requirements gathering, analysis, technical design, solution estimation, documentation, testing, and implementation activities.
o Support Agile delivery practices, including sprint planning, backlog refinement, code reviews, unit testing, and release coordination.
o Provide production support, troubleshoot application issues, analyze root causes, and implement corrective actions.
o Collaborate with business users, product owners, QA teams, infrastructure teams, and offshore/onshore development teams.
o Contribute to CI/CD pipelines, source control practices, build automation, and deployment processes using tools such as Azure DevOps, GitHub, and TFS.
Required Qualifications
o 10+ years of professional software development experience, preferably with significant hands-on experience in the Microsoft technology stack.
o Strong experience with C#, .NET Framework, ASP.NET, ASP.NET Core, MVC, Web API, ADO.NET, Entity Framework, WCF, and related technologies.
o Experience developing and supporting N-tier, client/server, web-based, and service-oriented applications.
o Strong database development skills with SQL Server, including query optimization, stored procedures, triggers, and performance tuning.
o Experience with front-end development using HTML5, CSS, Bootstrap, JavaScript, jQuery, Angular, React, JSON, and AJAX.
o Working knowledge of object-oriented programming principles, SOLID principles, design patterns, and clean coding practices.
o Experience with source control, DevOps, and delivery tools such as Azure DevOps, GitHub, TFS, Visual Studio, VS Code, Postman, and SoapUI.
o Ability to create technical design documents, use cases, test cases, deployment documentation, and user-facing documentation.
o Strong analytical, troubleshooting, communication, and stakeholder-management skills.
Preferred Qualifications
o Experience leading small development teams or coordinating work between onshore and offshore teams.
o Experience with application modernization, legacy system remediation, technical debt reduction, and platform upgrades.
o Experience integrating third-party services, AI-enabled services, transcript/document processing, or business workflow automation.
o Experience in manufacturing, automotive, legal technology, industrial, or enterprise business systems environments.
o Familiarity with Oracle, DB2, LiteDB, PostgreSQL, SharePoint, IIS, Windows Server, and cloud-oriented delivery practices.
Education and Certifications
o Bachelor’s degree in Computer Science, Information Technology, Engineering, or a related field preferred; equivalent professional experience may be considered.
o Advanced degree or formal computer applications education is a plus.
o Relevant Microsoft, .NET, cloud, DevOps, database, or application development certifications are preferred.
Technical Skill Areas
Category Representative Skills
Languages and Frameworks
C#, VB.NET, ASP.NET, ASP.NET Core, MVC, .NET Framework, LINQ, Entity Framework
APIs and Services REST, SOAP, Web API, WCF, backend services, third-party integrations
Front-End HTML5, CSS, Bootstrap, JavaScript, jQuery, Angular, React, AJAX, JSON
Databases SQL Server, Oracle, DB2, PostgreSQL, LiteDB, stored procedures, triggers, query optimization
DevOps and Tools Azure DevOps, GitHub, TFS, Visual Studio, VS Code, Postman, SoapUI, SSMS
Delivery Practices Agile, Waterfall, CI/CD, code reviews, testing, production support, technical documentation
Candidate Evaluation Criteria
o Demonstrated ability to deliver business-critical enhancements and modernization work across multiple applications.
o Depth of hands-on .NET development experience across backend, frontend, database, and integration layers.
o Ability to understand business requirements and convert them into scalable technical solutions.
o Experience improving system performance, reliability, maintainability, and customer experience.
o Strong communication skills and ability to work effectively with technical teams, business stakeholders, and support organizations.
o Readiness to provide technical leadership, mentor developers, and contribute to best practices.
Suggested Interview Focus Areas
o Application modernization approach for legacy .NET systems.
o Designing and securing RESTful APIs and service integrations.
o SQL query tuning, stored procedure development, and database troubleshooting.
o Front-end experience with Angular, React, JavaScript, and responsive UI frameworks.
o Handling production incidents, root-cause analysis, and support handoffs.
o Experience with Agile teams, code reviews, CI/CD pipelines, and release management
Contact Information
Email: saiteja@vrntech.us
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