Lead Developer

Senior .NET Developer (Remote) Lead High-Impact, Large-Scale .NET Projects Using Modern Microsoft Technologies Step into a Senior-level role where your technical expertise directly shapes major enterprise applications used by thousands of end users. This is an opportunity to work on large-scale, mission-critical web systems built on the Microsoft stack, partnering closely with a Systems Architect to design and deliver modern, high-performance solutions. You'll be working with the latest tools - Visual Studio 2022, .NET 6+, Blazor, MVC, Entity Framework Core, SQL Server, and more - while helping modernize and enhance both internal and public-facing applications. If you enjoy solving complex architectural challenges, building clean and scalable code, and influencing technical direction, this role offers the autonomy and impact you're looking for. This is a fully remote position with long-term stability and the chance to work on highly visible, multi-year initiatives. What You'll Do • Serve as the Senior .NET developer on large enterprise development efforts. • Collaborate with a Systems Architect to design and build modern web-based applications. • Develop solutions using cutting-edge Microsoft technologies including .NET 6+, Blazor, MVC, EF Core, and SQL Server. • Build n-tier applications with strong object-oriented design principles. • Create intuitive, modern user interfaces using Blazor, Bootstrap, jQuery, AJAX, and JavaScript. • Work across the full SDLC: analysis, design, development, testing, documentation, and deployment. • Ensure code quality through best practices, static code analysis, and strong documentation. • Collaborate with cross-functional teams including infrastructure, networking, and operations. • Support both internal systems and public-facing applications. Required Qualifications • 12+ years of experience architecting, designing, and developing large-scale web applications using Microsoft technologies. • Deep expertise in .NET Framework 4.5+, .NET 6+, C#, VB.NET, ASP.NET, MVC, Blazor, and n-tier architecture. • Strong experience with SQL Server 2012+, including stored procedures, views, triggers, and performance optimization. • Proficiency in JavaScript, AJAX, HTML, jQuery, CSS, and responsive UI frameworks. • Experience with WCF, Web API, Windows Services, Web Services, and service-oriented architecture. • Strong understanding of OOP, OOA/OOD, and enterprise-level design patterns. • Experience with Entity Framework, EF Core, LINQ, ADO.NET, and SQL CE. • Familiarity with CheckMarx or similar static code analysis tools. • Ability to produce high-quality technical documentation. • Knowledge of ADFS, claims-based authentication, WS-Fed, and OIDC. • Experience collaborating with cross-sector technical teams. Preferred Qualifications • Experience with SQL Server 2022. • Exposure to Microsoft Dynamics. • Reporting experience using SSRS, Power BI, or Business Objects. • Experience with workflow tools or SharePoint integration. • Prior experience supporting government or public-sector IT environments. • Microsoft certifications are a plus. Experience Level Expert-level .NET developer with deep architectural and hands-on development experience. Job Type & Location This is a Contract position based out of Frankfort, KY. Pay And Benefits The pay range for this position is $50.00 - $53.00/hr. Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following: Medical, dental & vision Critical Illness, Accident, and Hospital 401(k) Retirement Plan - Pre-tax and Roth post-tax contributions available Life Insurance (Voluntary Life & AD&D for the employee and dependents) Short and long-term disability Health Spending Account (HSA) Transportation benefits Employee Assistance Program Time Off/Leave (PTO, Vacation or Sick Leave) Workplace Type This is a fully remote position. Application Deadline This position is anticipated to close on Jan 8, 2026. > About TEKsystems: We're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change. That's the power of true partnership. TEKsystems is an Allegis Group company. The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law. About TEKsystems And TEKsystems Global Services We're a leading provider of business and technology services. We accelerate business transformation for our customers. Our expertise in strategy, design, execution and operations unlocks business value through a range of solutions. We're a team of 80,000 strong, working with over 6,000 customers, including 80% of the Fortune 500 across North America, Europe and Asia, who partner with us for our scale, full-stack capabilities and speed. We're strategic thinkers, hands-on collaborators, helping customers capitalize on change and master the momentum of technology. We're building tomorrow by delivering business outcomes and making positive impacts in our global communities. TEKsystems and TEKsystems Global Services are Allegis Group companies. Learn more at TEKsystems.com. The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.