Jira programme modify

Dear Sir / Madam We are the AvenDATA GmbH, a Berlin-Centered Specialist and market leader in legally compliant archiving of legacy systems. We have provided our complex archiving solutions to more than 2500 companies worldwide. We need a JIRA Expert who will be able to help us with the following requirement: we are looking for a company who can help us to modify the "Jira programme" we need to modify all processes input mask. we are using it since 10 years. Will be extremely grateful if you could please let us know how soon you can help us with our requirements, the time estimation and the cost estimation required to complete the same. Requesting you to kindly share the cost estimates on per hour basis. Would highly appreciate a prompt response from your end for the same. Thank you,