Full Stack .NET/React Developer

Sphere, Powered By TrustCommerce (Santa Ana, California), an established company, is looking to immediately hire a “Web Developer” for full-time, in-house employment.  Sphere develops and maintains technology-oriented, merchant service solutions in the payment card industry.

About the Company

Sphere, Powered by TrustCommerce, is a leading provider of end-to-end integrated payments, security software, payments gateway and merchant acquiring products and services. Sphere serves a variety of companies from large, complex enterprises to small local businesses across a range of end-markets, including healthcare, restaurant, retail, parking, education, transportation, and insurance. We offer a dynamic, fast-paced environment where we are dedicated to helping our employees succeed, as well as offer a generous benefits package including a no-waiting-period health insurance program.

Position Summary

We are looking for a highly organized and enthusiastic Web Developer who is excited to build new product using the latest web, security and server technologies. We want someone with consumer experience where real customers and internal/external users used the products you developed, and those products then scaled up in terms of volume of transactions, interactions, features, etc.  You will be expected to work with others and to deliver all projects on schedule, on budget, and to specification.  Above all, this role will contribute to and extend the TrustCommerce technology reputation for excellence.


  • Design and develop a rich user interface for our mission-critical high-availability application using ASP.NET, React and modern JavaScript libraries.
  • Design and develop a data schema focused APIs for relational and non-relational databases using C#, Web API and .Net Core.
  • Participate in user experience requirements and design, architecture initiatives and code reviews with a major focus on ease of use, visual appeal, re-usability, security, and performance. Examples include: user interface architectures (MVC, MVVM, etc.), API integration patterns (REST, GraphQL, etc.), and authentication and authorization technologies (OAuth2, OpenID, SSO etc.).


  • Bachelor’s degree in computer science or equivalent experience.
  • 5+ years of experience as C# and ASP.NET developer. Excellent Web development with .NET Core skills are required.
  • Experience in UI/UX design. Strong front-end skills with JavaScript, React, HTML, CSS and utilizing modern frameworks.
  • Experience building database-driven applications (schema design and relational modeling). Must be proficient with SQL queries and stored procedures.
  • Experience with role and rule based security and authentication tools (Okta or Azure AD apps) and best-practices.
  • Version control expertise with Git.
  • Experience building reusable components and responsive applications.
  • Excellent problem-solving and debugging skills.
  • Experience with Test Driven Development.
  • Passionate and driven to create an amazing customer experience.
  • Nice to have development experience in Microsoft Azure.
  • Mobile, IOS or Android experience is plus.

Candidate Must:

  • Must have great communication skills.
  • Exemplify Integrity, Professionalism, and Excellence
  • Be Dedicated, Reliable, Details Oriented, and Solutions Oriented
  • Be a Self-Reliant, Self-Starting, Go-Getter
  • Thrive in Fast-Paced, Dynamic, Team Environments

Location: Santa Ana, CA

Note: Successful applicants must submit to a pre-employment background check and drug screen