Software Engineer Co-Op/Intern - Fall 2026

Paychex • Rochester, New York • Posted June 10, 2026

About the Role

Overview



Paychex is looking for a driven and curious Software Engineer Intern to join the team for the Fall 2026 semester. In this role, you’ll get hands-on experience building real-world applications using C# and React, while working alongside experienced engineers. This is a great opportunity to apply what you’ve learned in the classroom, grow your technical skills, and contribute to meaningful projects that support Paychex’s systems.

Responsibilities

  • Develop, test, deploy, maintain, and enhance software solutions in alignment with defined requirements
  • Create and execute automated and manual test scripts to ensure application quality and reliability
  • Implement well-scoped, routine code changes and enhancements with guidance as needed
  • Contribute to effort estimation for tasks and user stories based on b...