Senior .NET Backend Engineer — APIs & SQL (Onsite)

Creative Financial Staffing, LLC; Okemos (MI); On-site; USD 59,236 - 79,900; Full time

Job summary

Creative Financial Staffing, LLC is seeking a Software Engineer in the East Lansing area to join our on-site team. The role focuses on enhancing existing systems and building new features across our product suite, with an emphasis on API-driven, backend development in a SQL-based environment.

You will design, develop, and maintain scalable applications using C# and .NET, write complex SQL, and contribute to API gateway initiatives while collaborating with cross-functional teams to deliver

Qualifications

• 5+ years of professional software development experience.
• Strong experience with C# and .NET frameworks.
• Deep SQL experience, including complex queries, joins, and stored procedures.
• Experience building and consuming RESTful APIs.
• Backend development focused on performance and scalability.
• Experience using GitHub and AI-powered development assistants (e.g., Claude, GitHub Copilot).

Responsibilities

• Design, develop, and maintain scalable applications using C# and .NET technologies.
• Enhance and support existing systems through ongoing updates, bug fixes, and performance improvements.
• Build and implement new features aligned with product roadmap and business needs.
• Develop and manage RESTful APIs and contribute to API gateway architecture initiatives.
• Collaborate on integrating multiple products into a unified ecosystem.
• Write and optimize complex SQL queries, stored procedures, and database designs.
• Participate in system architecture discussions to improve reliability and scalability.
• Work closely with cross-functional teams to gather requirements and deliver high-quality solutions.
• Leverage modern development tools, including AI-assisted coding technologies, to improve productivity and code quality.

Skills

C# & .NET

SQL

RESTful APIs

Performance optimization

GitHub

AI-assisted coding

Tools

Entity Framework

React

CI/CD

IaC tools

GitHub

Job description

Creative Financial Staffing, LLC is seeking a Software Engineer in the East Lansing area to join our on-site team. The role focuses on enhancing existing systems and building new features across our product suite, with an emphasis on API-driven, backend development in a SQL-based environment.

You will design, develop, and maintain scalable applications using C# and .NET, write complex SQL, and contribute to API gateway initiatives while collaborating with cross-functional teams to deliver