Full Stack .Net Developer

About the Role We're partnering with a mission-driven organization seeking an Experienced Full Stack .NET Developer to join a highly collaborative and experienced software development team. This opportunity is ideal for a hands-on developer who enjoys working across both modern web applications and desktop technologies while contributing to application modernization initiatives. You'll play a key role supporting business-critical applications, developing new solutions, and helping drive technology improvements across the organization. The team is looking for someone who can step in quickly, take ownership, and make an immediate impact. Responsibilities Design, develop, test, and support custom business applications Build scalable solutions using C#, .NET 8+, and Blazor Maintain and enhance existing WPF desktop applications Develop front-end and back-end functionality in a true full stack capacity Consume, build, and integrate RESTful APIs Participate in architecture discussions and contribute to software design decisions Utilize Azure DevOps throughout the development lifecycle Build and maintain automated testing solutions Troubleshoot production issues, defects, and performance concerns Participate in Agile ceremonies, code reviews, and sprint planning Create technical documentation and contribute to development best practices Support modernization and migration initiatives while maintaining existing systems Tools & Environment C# .NET 8+ Blazor WPF REST APIs HTML, CSS, JavaScript Azure DevOps Playwright FlaUI Selenium Agile / Scrum GitHub Copilot, Microsoft Copilot, ChatGPT, or similar AI development tools Top Skills Required 5+ years of enterprise-level C#/.NET Full Stack Development Strong hands-on experience with Blazor Experience developing and supporting WPF desktop applications Strong understanding of application architecture and design patterns Experience with Azure DevOps Automated testing experience using Playwright, FlaUI, Selenium, or similar frameworks Experience building and consuming RESTful APIs Ability to quickly become productive in an established development environment Workplace Perks 100% Remote (Colorado Residents Only) Work alongside a highly experienced development team Opportunity to contribute to meaningful technology initiatives Exposure to both modern and legacy application environments Collaborative culture with direct interaction across technical and business teams Streamlined 2-step interview process Mission-driven organization focused on creating a positive community impact We reserve the right to pay above or below the posted wage based on factors unrelated to sex, race, or any other protected classification. 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. This temporary role may be eligible for the following: Medical, dental & vision 401(k)/Roth Insurance (Basic/Supplemental Life & AD&D) Short and long-term disability Health & Dependent Care Spending Accounts (HSA & DCFSA) Transportation benefits Employee Assistance Program Time Off/Leave (PTO, Vacation or Sick Leave) Job Type & Location This is a Contract position based out of Denver, CO. Pay and Benefits The pay range for this position is $50.00 - $60.00/hr. Individual compensation offered for this position within this range will depend on many factors, including qualifications, skills, relevant experience, job knowledge, geographic location, internal equity, and other pertinent job-related factors. 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) Job Type & Location This is a Contract position based out of Denver, CO. Application Deadline This position is anticipated to close on Nov 5, 2026. Workplace Type This is a fully remote position. 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 Were 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. Were 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. Were strategic thinkers, hands-on collaborators, helping customers capitalize on change and master the momentum of technology. Were 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. San Francisco Fair Chance Ordinance: Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records. Massachusetts Lie Detector: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability. Use of Artificial Intelligence (AI): We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.