Senior .NET Full Stack Developer#26-88777

We are seeking an experienced Senior .NET Full Stack Developer for a 12-month contract role based in Livingston, New Jersey. You will join a development team focused on modernizing business-critical applications within a financial services environment. The position emphasizes backend development with a 75/25 split between backend and frontend work, and requires strong analytical and problem-solving skills to understand the business context behind the applications you develop.

Responsibilities

• Design, develop, enhance, and modernize enterprise applications using .NET Core, SQL, and React (Angular experience also considered).
• Allocate approximately 75% of development time to backend systems and 25% to frontend application development.
• Participate in modernization efforts involving existing applications, services, and business processes.
• Analyze business requirements and translate them into effective, maintainable technical solutions.
• Develop a strong understanding of the business processes and rules supported by the applications.
• Evaluate multiple potential approaches to development challenges and select solutions based on scalability, maintainability, performance, and business impact.
• Write efficient SQL queries and work extensively with relational databases and data-driven applications.
• Develop and enhance user-facing functionality using React.
• Review existing code and application architecture to identify opportunities for modernization and improvement.
• Troubleshoot complex application and data issues by identifying root causes rather than simply addressing symptoms.
• Collaborate closely with developers, QA resources, product stakeholders, and business partners.
• Participate in code reviews and technical discussions, clearly explaining development decisions and potential tradeoffs.
• Leverage modern development tools, including AI-assisted development, while maintaining ownership and understanding of the resulting code.

Qualifications

• Required
  • Strong professional development experience with .NET Core and C#.
  • In-depth SQL skills and experience working with relational databases, with demonstrated expertise in performance tuning and joins.
  • Experience developing modern web applications with React or Angular.
  • Strong backend application development experience, including business logic and data-intensive applications.
  • Demonstrated ability to analyze complex requirements and understand the business purpose behind application functionality.
  • Strong troubleshooting and root-cause analysis skills.
  • Ability to articulate why a particular technical approach was selected, what alternatives were considered, and the potential consequences of taking a different approach.
  • Experience working with existing or legacy applications and participating in application modernization initiatives.
  • Strong understanding of software development principles, application architecture, and maintainable coding practices.
  • Strong verbal and written communication skills with the ability to participate effectively in detailed technical discussions.
• Preferred
  • Experience within financial services, retirement services, benefits, payroll, investment, or other transaction-oriented environments.
  • Experience modernizing legacy enterprise applications into newer .NET and web-based architectures.
  • Experience working on systems involving complex business rules, calculations, financial transactions, or large datasets.
  • Familiarity with AI-assisted software development tools and practices.