Hi Sir/Madam,
I have been working at SharePoint for 7 years. I have experience in SharePoint, Project, PowerApps, Flow, Teams, Planner, Outlook Addin, and PowerBI.
I worked with SharePoint On-premise( 2010, 2013, 2016, 2019) and Online. I developed many intranet, extranet and web site project using SharePoint. I developed the tools that help you to manage your internal processes like inventory management, document management, leave management, audit management, skill management, and meeting management, etc.
I can develop the event receivers, timer jobs, web parts, workflows(sp designer, ms flow, nintex ,and spark etc).
Please let me know what exactly do you want to do with this automation application. It is not true to give a proposal for this project before you can not explain the details.