I enjoy being challenged and engaging with projects that require me to work outside my comfort and knowledge set, as continuing to learn new languages and development techniques are important to me and the success of your organization.
Your listed requirements closely match my background and skills. A few I would like to highlight that would enable me to contribute to your bottom line are
Highly skilled in designing, testing, and developing software
Thorough understanding of data structures and algorithms
Knowledgeable of back-end development best practices
Hands-on software troubleshooting experience
Proven track record of proper documentation for future maintenance and upgrades