Senior Full Stack Web Developer Jobs in South Dakota

Industry: Telecommunications Software & Technology

We are seeking an experienced Full Stack Web Developer to join a collaborative software development team focused on enhancing customer engagement, eCommerce, online payments, and self-service experiences for telecommunications providers nationwide. This role will play a key part in developing and maintaining customer-facing web applications that directly impact how users interact with billing, payment processing, and digital account management platforms.

As part of an Agile development team, you will work closely with software architects, product leaders, QA professionals, and project managers to design, build, and deliver scalable web solutions. The ideal candidate brings strong experience within the Microsoft ecosystem and is passionate about leveraging modern technologies, including AI-assisted development tools, to improve software quality and development efficiency.

This position provides the opportunity to contribute to high-visibility digital transformation initiatives while working with modern technologies such as ASP.NET, Blazor, Azure DevOps, SQL Server, and cloud-based development practices.

• Develop new features and enhancements across multiple web-based software products.
• Design, develop, test, and deploy scalable web applications following established software architecture standards.
• Build and enhance backend APIs and application integrations.
• Collaborate with cross-functional teams including product, QA, and business stakeholders to deliver high-quality software solutions.
• Create customer-facing functionality that improves eCommerce, billing, online payments, and self-service experiences.
• Write and maintain unit and integration tests to ensure application reliability and performance.
• Troubleshoot and resolve application issues across development, testing, and production environments.
• Participate in Agile ceremonies and contribute to continuous improvement initiatives.
• Utilize AI-assisted development tools to increase productivity, improve code quality, and streamline testing and documentation processes.
• Support technical documentation and ensure solutions align with business and technical requirements.

• 5+ years of experience as a Full Stack Developer.
• Strong experience with ASP.NET and the .NET Framework.
• Experience building and consuming RESTful APIs.
• Proficiency with SQL Server and relational database development.
• Experience developing modern web applications within the Microsoft technology stack.
• Understanding of software design principles, testing methodologies, and Agile development practices.
• Interest in or experience utilizing AI technologies and AI-assisted development tools.

• Experience with Blazor or Blazor WebAssembly.
• Experience with Azure DevOps and CI/CD pipelines.
• Experience with Git source control.
• Experience supporting eCommerce, payment processing, or customer self-service applications.

In this role, you will help drive key digital initiatives focused on:

• Enhancing online payment and billing experiences for customers.
• Improving the organization's eCommerce platform and digital customer journey.
• Expanding self-service capabilities used by telecommunications customers nationwide.
• Supporting modernization efforts across customer-facing web applications.
• Advancing the adoption of AI-assisted development practices to improve efficiency and software quality.

You will join an established development team consisting of experienced web developers, dedicated QA resources, and technical leadership committed to collaboration, innovation, and continuous improvement. The team operates within an Agile environment where developers have the opportunity to influence technical direction, contribute ideas, and make a measurable impact on products used by customers across the country.

Work Arrangement: On-site (Mitchell, SD)

Employment Type: Permanent / Direct Hire

This is a Permanent position based out of Mitchell, SD.

The pay range for this position is $80000.00 - $120000.00/yr.

• Highly competitive wages • Generous Paid time off • 10 paid holidays • 401(k) matching • Company paid family Blue Cross Blue Shield health insurance plan • Company contributions to an HSA plan • Company paid employee Dental Insurance • Company paid employee Vision Insurance • Company paid Life Insurance • Company paid Short- & Long-Term Disability Insurance

This is a fully onsite position in Mitchell,SD.

This position is anticipated to close on Aug 14, 2026.

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.

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.

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.