Sr. .NET Developer

Must Have: + 5+ years of .NET CORE 3.1 or higher (6.0 preferred) and C# experience. + 5+ years of experience developing with REST web service interfaces or Web APIs. + 5+ years of experience with SQL including writing and maintaining complex Select/Insert/Update statements. + 3+ years of experience with developing code to allow users to upload documents from a website. + 5+ years of experience with Agile / SCRUM processes and working in Sprint Development team. + 5+ years of experience working with GIT code repository software. + 5+ years of experience developing unit and regression tests. + HTML5, CSS3, JavaScript, jQuery + 3 Nice to Have: + 5+ years of experience developing secure websites using industry best practices (such as preventing cross site scripting or SQL injection attacks and coding logging into software functionality). + 3+ years of experience working with Azure DevOps / TFS using boards and code repository. + Familiarity with SendGrid + Familiarity with Web Content Accessibility Guidelines (WCAG) + Familiarity with identity provider (IdP) integration using OpenID Connect (OIDC) or SAML + Experience working with Azure DevOps, Jira, or equivalent for SDLC management. Job Type & Location This is a Contract position based out of Lansing, MI. Pay and Benefits The pay range for this position is $50.00 - $60.00/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 hybrid position in Lansing,MI. Application Deadline This position is anticipated to close on Nov 21, 2025. h4> 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.