Drawing from my successful 5+ year career, I can confidently say that I am adept in finessing Apple's authentication services into your Ionic and Angular app, facilitating smoother user experiences and enhancing security. My thorough knowledge of iOS native development using Swift and Objective-C aligns seamlessly with the vital improvements you seek. Likewise, my familiarity with other frameworks like Ionic enables streamlined integration to deliver the results you need in an efficient manner.
On the rare chance that further backend work is required, worry not, for I have dexterity in languages like Node.js and PHP among others. The fusion of tech-savvy expertise across diverse domains is what sets me apart from my counterparts. I'm resolute about delivering tailored solutions promptly, without compromising on quality.
In terms of budget, while your offering sits at $70, given the scale and complexity of your project that involves authentication upgrades along with acknowledgement from Facebook, a slightly revised budget could well justify satisfactory results. Allow me this opportunity to apply my expertise and take this urgent project off your hands, ensuring a high caliber end product that emphasizes both technological standards and financial prudence. Contact me now to get started!