Objective-C: Optimize App UI for iPhone X, Bug Fixes, and Future Updates

Remote, freelance opportunity for now.

Responsibilities:
• Add in-app onboarding
• Bug fixes: app crashes if doing anything on Connect screen before all contacts loaded; button doesn't work unless clicked several times or quitting app; screen UI moves down everytime user hits cancel button
• App currently is in fixed iPhone 4s/SE/5/6/7 ration on iPhone X. Need to move buttons etc to fit iPhone X ratio. Future UI opportunities.

Requirements:
• Obj-C proficiency (able to fix bugs and implement new features in little time). App is hard-coded and not in Xibs or storyboards.
• Engineer's LinkedIn URL.
• Knowledge in best practices and clean code.
• Responsiveness.
• English proficiency, listens, and zero arguing--we do not have time or energy to repeat things 5+ times and message back and forth.

Please send hourly rate (within female-led, bootstrapped startup expectations) and engineer's LinkedIn (portfolio or engineering experience listed must be verifiable). Assignment Agreement/NDA required. If you don't hear back about your proposal, please do NOT follow-up, thanks.