Can you describe a challenging software development project you recently completed and the results?

"The most challenging software project I've worked on recently involved an application to allow the company's personnel to self-manage their HR benefits. The challenge was that end-users had to have secure access to their own information without the HR staff intervening. This required me to implement several security features, including user authentication, password protection, and the ability for users to access the company's database behind its firewall via VPNs. Recognizing that I did not have recent experience in these technologies, I refreshed my skills by taking a short online course and collaborated with some of the other developers on our team on the project. Together we developed the software on schedule and under budget. I learned to recognize my shortcomings and bring in additional resources when needed."