ASAbout Amit
As an Expert Mobile Engineer with 12+ years of experience, I help companies build robust, scalable, and modern iOS and Android applications and SDKs. Whether it's architecting developer-friendly SDKs, migrating legacy codebases to SwiftUI, or accelerating mobile product delivery — I bring deep technical expertise with a focus on performance, maintainability, and user experience.
I’ve led critical projects at Storyblok, Zalando, Uber, and Lotto24, where I:
- Architected Swift-based and Kotlin-based SDKs used by 100+ client apps
- Migrated large UIKit codebases to SwiftUI and MVVM
- Built high-performance iOS and Android features serving millions of users
- Reduced integration time, tech debt, and app latency across teams
🔧 I typically handle:
- SDK & component architecture
- SwiftUI migrations and clean MVVM setups
- MVPs for startups or tooling for dev teams
- App audits, refactoring, and performance optimization
💡 What sets me apart:
- Strong product-thinking mindset
- Clean, testable code with CI/CD and async/await
- Excellent documentation and developer enablement
- Deep experience working in cross-functional, agile teams
I'm based in Hamburg, Germany, and open to both on-site collaboration and remote freelance engagements across the EU.
English
Native or bilingual
German
Basic
Bangla
Native or bilingual
Remote only
Primarily works remotely
Experience
- Storyblok GmbHSenior iOS EngineerJuly 2024 - Today (1 year and 11 months)
- Architected native iOS SDKs using Swift, SwiftUI, and Combine, used by 100+ client apps.
- Reduced SDK integration time by 60% through modular API design and optimized networking.
- Created 3 SwiftUI-based developer tools and 2 sample apps to support onboarding.
- Authored 100+ pages of SDK documentation, reducing developer queries by ~40%.
- Drove monthly SDK adoption growth by 20% via sample code repos.
- Lotto24 AGSenior iOS EngineerApril 2020 - June 2024 (4 years and 2 months)
- Led UIKit-to-SwiftUI migration across 80% of screens, improving UI test stability by 35%.
- Refactored legacy Objective-C code into Swift MVVM modules, reducing tech debt by 70%.
- Developed Lotto widgets used by 200K+ users weekly, increasing user engagement by 18%.
- Improved stability by increasing unit test coverage to 60% using XCTest.
- Implemented concurrency using Combine and async/await, reducing network latency by 30%.
- Zalando SESenior iOS EngineerAugust 2018 - March 2020 (1 year and 7 months)
- Built native Swift-based payment SDK powering ~3M transactions/month.
- Reduced checkout latency by 15% through optimized payment flow logic.
- Drove UI migration to native iOS components, increasing conversions by 20%.
- Delivered 5+ native UI components to replace web-based payment flows.
- Participated in 30+ Agile sprints, shipping features on a bi-weekly cadence.
Recommendations
Be the first to recommend Amit
Help this freelancer shine by sharing your experience working together.
These freelancer profiles also match your criteria
Agatha Frydrych
Backend Java Software Engineer
4.7
(3)
2
Baptiste Duhen
Fullstack developer
4.6
(4)
5
Amed Hamou
Senior Lead Developer
4
(2)
7
Audrey Champion
Web developer
4.3
(3)
4
Education
- Bachelor's DegreeBangladesh University of Engineering & Technology2011Computer Science & Engineering
- Master's DegreeUniversity of Texas at Arlington2016Advanced Computer Science