ASÜber 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.
Englisch
Muttersprachlich oder zweisprachig
Deutsch
Grundkenntnisse
Bengalisch
Muttersprachlich oder zweisprachig
Nur remote
Führt Projekte hauptsächlich remote aus
Projekt- und Berufserfahrung
- Storyblok GmbHSenior iOS EngineerJuli 2024 - Heute (1 Jahr und 11 Monate)
- 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 - Juni 2024 (4 Jahre und 2 Monate)
- 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 - März 2020 (1 Jahr und 7 Monate)
- 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.
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Ausbildung und Abschlüsse
- Bachelor's DegreeBangladesh University of Engineering & Technology2011Computer Science & Engineering
- Master's DegreeUniversity of Texas at Arlington2016Advanced Computer Science