vtiger php developer expert required for integrating external systems

We search for a vtiger expert developer who can consult on automation tasks (workflows) along being able to do clean programming like: - adding additional buttons for triggering new functionality (beside of workflows) - implementing new functionality like calling external rest endpoints to provide data from CRM - implementing new functionality like calling external rest endpoints and fetching data for the CRM (e.g. creating contacts, companies, leads, ...) - of course you are not a hacker which changes original vtiger code , but a clean coder and you will deliver your changes as clean extensions/plugins so it is done cleanly by extensions you/your team has at least 3 years FULL-TIME development experience in vtiger? you/your team has helped at least 25 clients to automate and to organize their processes in vtiger? you/your team has developed also a bunch of plugins/extensions for vtiger? Means you are also a developer? sounds you are a good fit! We search you for a hourly based consultancy. Means we need to understand vtiger properly to finally decide what we will develop on custom extension or what we need to buy in form of extensions. requirements - what vtiger versions need to be supported? ...- support required for vtiger 7.x (we are on 7.4 but needs to run on any 7.x version) We have also technical background, so we can clearly tell you what we need and you help us to decide in what direction to go with your experiences. What we do not need: - a junior - an unexperienced vtiger user (see above requirements) - an unexperienced vtiger admin (see above requirements regarding automation/processes) - an unexperienced vtiger developer (see above requirements) How to work together? we will have a call/chat and a writer/word document there the queries will be placed. After our side is done, we will share you the doc for review and for clearances. Also you can place your answers there, so we are able to understand vtiger better and to decide based on your recommendations. What is our budget? we do not disclose our budget nor planned hourly rate. Offer us your best bid. The given budget of this project is a placeholder, so bid your best bid Ensure your bid is a reasonable bid and not a interest catcher bid, we do not like to play bidding games Communication: Do not wait for our availability here. Just answer, just ask or just reply.