Senior iOS Engineer for teams that need reliable delivery
I help startups and businesses ship iOS Apps and features, modernize legacy codebases, and improve performance & stability with clean PRs, clear communication, and maintainable architecture.
✅ Native iOS (Swift) ✅ Modern Apple frameworks ✅ Performance & stability ✅ App Store-ready
Services
Senior iOS Software Engineer (Contracting)
Plug into your team and ship features steadily.
Feature implementation end-to-end (UI → logic → edge cases)
Works within your workflow (tickets, reviews, release cadence)
Clear weekly progress updates + proactive risk flags
Codebase Modernization & Refactor Sprint
Reduce complexity while keeping delivery moving.
Refactor high-friction areas to improve maintainability
Pragmatic improvements to architecture and structure
Documentation + handoff so your team can continue easily
Performance & Stability Sprint
Make the app smoother and more reliable.
Investigate crashes, memory leaks, and slow screens
Improve performance and reduce “mystery issues”
Practical testing where it matters + release support
Book a 30-min intro call
Tell me what you’re building, and I’ll suggest the fastest, lowest-risk next steps.
On the call we’ll cover:
Goals & constraints (timeline, team, stack)
What’s slowing delivery (bugs, performance, architecture, process)
A concrete plan (next steps + whether I’m a fit)
No sales pitch. If I’m not the right person, I’ll tell you quickly
Pick a time below
Timezone: CET (Netherlands)
You’ll receive a calendar invite immediately
About me
Hi! My name is Mostafa Elshazly. I am a senior iOS Software Engineer, I have been building iOS apps for clients since 2017 and I work as a contractor with teams from all over the world.
I help teams ship features steadily, modernize legacy code, and improve performance & stability without slowing down delivery. I integrate quickly into existing workflows (tickets, PR reviews, releases) and focus on work that reduces risk and saves future engineering time. Based in the Netherlands (CET), available for remote work
Working with me gets you:
Weekly progress updates with clear scope and risk flags
Pragmatic refactors that improve velocity
Performance: slow screens, leaks, startup time, scrolling hangs
Stability: crash investigation, monitoring and prevention
Testing strategy aligned to risk areas + CI-friendly PRs
Documentation and handoff so your team can keep moving
If you’re looking for senior iOS support, either contracting or a focused sprint, book a quick intro call and I’ll suggest the fastest path forward.
Reviews
“Well what can I say other than Mostafa was a god send. I posted my project not realizing how much work was actually involved to get it accepted to the app store. There was a lot of stuff I didn’t know and Mostafa was unbelievably patient with me, he went above and beyond in walking me through everything step by step. I had a few mistakes which were correctly quickly. I honestly couldn’t of asked for better service, I will definitely be using Mostafa for future work 10/10.”
“Very diligent individual and focuses on the client needs and satisfaction. I like how he asks questions to understand the needs and delivered the product. he keeps a cool mind and completes the task. I will definitely work with Mostafa again.”
“Delivered the project lightning fast without any issues. Very satisfactory”
“Very fast and reliable, thank you”
“He is A+++ in iOS App development. More work on the way, so this should explain”
“Awesome I recommend him 100% will give him other project he is expert in his job”
“Mostafa is very professional and very easy to work with. I will hire him for my new project for sure.”
Contact
Interested in working together? Fill out some info and I’ll be in touch shortly. I can’t wait to hear from you!