TEKsystems · 1 day ago
Lead Developer
United States
Contract
Remote
Senior Level, Lead/Staff
$50/hr - $53/hr
12+ years expTEKsystems is a leading provider of business and technology services, and they are seeking a Senior .NET Developer to lead high-impact, large-scale .NET projects. This role involves collaborating with a Systems Architect to design and deliver modern web-based applications using cutting-edge Microsoft technologies.
Information Technology
Responsibilities
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
Qualification
Required
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
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
Benefits
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)
Company
TEKsystems
At TEKsystems, they understand people. Every year they deploy over 80,000 IT professionals at 6,000 client sites across North America,
10001+ employees
H1B Sponsorship
TEKsystems has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (46)
2024 (52)
2023 (33)
2022 (22)
2021 (36)
2020 (53)
Funding
Current Stage
Late StageLeadership Team
Ryan Skains
Vice President, TEKsystems Global Services
Recent News
2025-11-19
2025-10-29
Company data provided by crunchbase