As a seasoned Senior Software Engineer with over six years of experience, I am confident that I possess the necessary skills and expertise to successfully fix your Payment Asynchronous Notification issue. I have thorough knowledge in both Node.js and Vue.js, which makes me highly qualified to resolve complex problems in an effective and efficient manner.
With my extensive background in building websites from scratch and hosting them, I understand the critical role that impeccable payment processing plays for businesses. Every single step matters, from the initial API authentication to granting user-access only to relevant resources. Rest assured, I will leave no stone unturned in ensuring a seamless payment process for your platform.
In addition to my proficiency in Stripe, Paypal, Instamojo, Payumoney and Facebook APIs., my remarkable array of core competencies including HTML, CSS, JavaScript, Python, PHP, SQL among others further substantiate my potential to fix your urgent requirements. Trust me with this task and experience timely completion combined with long-lasting relationship.