A large public-sector technology organization in New York State is seeking a System Integration Engineer – Level I to support application development, system integration, and ongoing optimization efforts. This role requires a strong full-stack developer with deep expertise in C# and .NET Core technologies. Understanding & Planning Engage with business and technical stakeholders to gather and analyze system and user requirements Provide recommendations to refine requirements and translate them into actionable development plans Participate in design discussions and code reviews to ensure best practices and coding standards are followed Engage with business and technical stakeholders to gather and analyze system and user requirements Provide recommendations to refine requirements and translate them into actionable development plans Participate in design discussions and code reviews to ensure best practices and coding standards are followed Development & Implementation Design, develop, and implement new features, business logic, and reusable components using C# and related technologies Build responsive, user-friendly front-end interfaces in compliance with established design standards Develop and maintain scalable and secure .NET Core Web APIs Write, optimize, and maintain database scripts to ensure efficient data access and integrity Design, develop, and implement new features, business logic, and reusable components using C# and related technologies Build responsive, user-friendly front-end interfaces in compliance with established design standards Develop and maintain scalable and secure .NET Core Web APIs Write, optimize, and maintain database scripts to ensure efficient data access and integrity Quality Assurance & Optimization Develop and maintain unit tests to ensure software reliability and code quality Identify, troubleshoot, and resolve application defects and performance issues Analyze system performance and implement enhancements to improve efficiency and scalability Develop and maintain unit tests to ensure software reliability and code quality Identify, troubleshoot, and resolve application defects and performance issues Analyze system performance and implement enhancements to improve efficiency and scalability Mentorship & Documentation Provide technical guidance and mentorship to junior developers Create and maintain technical documentation, including design documents, API specifications, and user guides Provide technical guidance and mentorship to junior developers Create and maintain technical documentation, including design documents, API specifications, and user guides Communication & Collaboration Communicate clearly and effectively with project managers, team members, and stakeholders Manage tasks independently while collaborating effectively within a team environment Communicate clearly and effectively with project managers, team members, and stakeholders Manage tasks independently while collaborating effectively within a team environment