Multi Tenancy Java - Spring Boot and Angular based Product Development Consultant

Hi looking for Full stack java developer who must have SAAS based multi tenant product development experience with below features - 1. Multi tenancy architecture with single application instance with individual databases for each tenant (customer) 2. Dynamic workflow management (BPMN) among multiple modules 3. Multiple package creation as per different workflow 4. Patch Management 5. Dynamic form generation to add/edit form fields like in ERP's like ZOHO 6. Package upgradation without data loss. 7. Project should be planned and develop in way that most of customisation can be handled through configurations and ERP settings and through database. 8. Form fields should be dynamic not designed static – We can add fields, remove fields, rename fields Ex – Field Label (Name), Type – Text, Drop Down, Single Select, Multi Select, Radio Button, Calendar etc Data Type – Integer, Varchar, Float etc. Validation – Mandatory, Email validation, Phone no validation etc. 9. Each customer will have separate database (DB1, DB2, DB3 etc) while application front end instance will common and accessible as per package and sub user grants/roles 10. Patch Management will be required for regular updations and features release and should be applicable to related package/module. 11. Intelligent Notifications and Alerts settings required – Email/Push Notification/Whats app 12. Overall architecture should be simple and easy to manage in future with requirement of less resources. Experience in ERP consulting/development is preferred.