[Date]

[Manager's Name]
[Manager's Title]
[Company Name]
[Company Address]

Dear [Manager's Name],

I am writing to submit my formal resignation from the role of [Your Job Title], with a notice period of 15 days. My final day at [Company Name] will be [Your Last Day].

I am incredibly grateful for the [Number] years I have spent with the company. The experience has been invaluable, and I am proud of the contributions I've made to projects such as [Mention a specific project or achievement]. I especially value the guidance and mentorship you have provided.

During my final 15 days, my priority will be to ensure a seamless handover. My plan is to finalize all my current projects, create detailed documentation for my successor, and provide training to the relevant team members to ensure continuity.

Thank you once again for a rewarding experience. I have no doubt that [Company Name] will continue to thrive, and I look forward to watching its future success.

Best regards,
[Your Signature]
[Your Name],
[Additional Credentials if applicable]