Automate SaaS Onboarding & Accounting Modules

My inventory management SaaS already works well once a user is inside, but everything around it still relies on manual steps. I need a developer who can remove every bit of human intervention from the subscription flow and add a few accounting-focused upgrades at the same time... (Budget: $30 - $250 USD, Jobs: Accounting, API Development, Automation, HTML, Laravel, MySQL, PHP, RESTful, RESTful API, Software Architecture)