Marketing Automation (SAAS) Development

We plan to develop a SAAS marketing automation web application and are looking for a developer that is very experienced with the Symfony framework and marketing automation or email marketing applications. The project approach is through cloning a marketing automation business application and convert it to a SAAS one. We are seeking a highly experienced developer/company with strong commitment. The developer should also have experience working with the APIs such as Paypal, Facebook, LinkedIn API, Salesforce, Dropbox, Onedrive, Google Drive etc. Please only bid the job if you have done similar type of projects with proven documentation or reference samples. We will need to leverage your experience to carry out the project, so please ensure you have enough expertise and sound experience in this area (mautic coding, marketing automation and email marketing software). Please add in 'I love coding!' as the first sentence in your application and answer the following questions when submitting a proposal or your bid: 1. What challenging part of this job are you most experienced in? 2. Why do you think you are a good fit for this particular SAAS project? and please indicate some required job skills you feel you are strongest at. 3. Which part of this project do you think will take the most time? 4. If you are shortlisted, are you willing to provide a detailed proposal (such as business process, high-level view of a program's structural design patterns)? 5. What past SAAS projects or jobs have you had that is most like this one and why? Extra services needed: Installation, Customization, 3rd party integration, Optimization, Security Expected Project timeline: 2 months