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I am a Senior Native Mobile Developer with 9+ years of experience delivering production mobile apps for iOS and Android. I specialize in Swift, SwiftUI, UIKit, and Kotlin/Java, and I own the full delivery cycle from requirements through QA and App Store submission. I have shipped complex rebuilds when source access is limited, built multilingual and accessible products, and collaborated with product, design, backend, QA and compliance to deliver reliable customer-facing flows on tight timelines. I’ve independently delivered features and led teams in contract settings, driving maintainable architectures, reusable UI patterns, and robust release processes. I am passionate about crafting high-quality mobile experiences, ensuring accessibility, localization readiness, and scalable practices across the full mobile delivery lifecycle.…I am a Senior Native Mobile Developer with 9+ years of experience delivering production mobile apps for iOS and Android. I specialize in Swift, SwiftUI, UIKit, and Kotlin/Java, and I own the full delivery cycle from requirements through QA and App Store submission. I have shipped complex rebuilds when source access is limited, built multilingual and accessible products, and collaborated with product, design, backend, QA and compliance to deliver reliable customer-facing flows on tight timelines. I’ve independently delivered features and led teams in contract settings, driving maintainable architectures, reusable UI patterns, and robust release processes. I am passionate about crafting high-quality mobile experiences, ensuring accessibility, localization readiness, and scalable practices across the full mobile delivery lifecycle.

Alexander Karpenko

PRO

AI Developer, App Developer, Architect, +1

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I am a Senior Native Mobile Developer with 9+ years of experience delivering production mobile apps for iOS and Android. I specialize in Swift, SwiftUI, UIKit, and Kotlin/Java, and I own the full delivery cycle from requirements through QA and App Store submission. I have shipped complex rebuilds when source access is limited, built multilingual and accessible products, and collaborated with product, design, backend, QA and compliance to deliver reliable customer-facing flows on tight timelines. I’ve independently delivered features and led teams in contract settings, driving maintainable architectures, reusable UI patterns, and robust release processes. I am passionate about crafting high-quality mobile experiences, ensuring accessibility, localization readiness, and scalable practices across the full mobile delivery lifecycle.…I am a Senior Native Mobile Developer with 9+ years of experience delivering production mobile apps for iOS and Android. I specialize in Swift, SwiftUI, UIKit, and Kotlin/Java, and I own the full delivery cycle from requirements through QA and App Store submission. I have shipped complex rebuilds when source access is limited, built multilingual and accessible products, and collaborated with product, design, backend, QA and compliance to deliver reliable customer-facing flows on tight timelines. I’ve independently delivered features and led teams in contract settings, driving maintainable architectures, reusable UI patterns, and robust release processes. I am passionate about crafting high-quality mobile experiences, ensuring accessibility, localization readiness, and scalable practices across the full mobile delivery lifecycle.

Available to hire

Barcelona, Spain

I am a Senior Native Mobile Developer with 9+ years of experience delivering production mobile apps for iOS and Android. I specialize in Swift, SwiftUI, UIKit, and Kotlin/Java, and I own the full delivery cycle from requirements through QA and App Store submission. I have shipped complex rebuilds when source access is limited, built multilingual and accessible products, and collaborated with product, design, backend, QA and compliance to deliver reliable customer-facing flows on tight timelines.

I’ve independently delivered features and led teams in contract settings, driving maintainable architectures, reusable UI patterns, and robust release processes. I am passionate about crafting high-quality mobile experiences, ensuring accessibility, localization readiness, and scalable practices across the full mobile delivery lifecycle.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Language

English

Advanced

Work Experience

Senior iOS Developer at Freedom Finance Europe Ltd

May 1, 2024 - Present

Build and maintain production iOS features for banking transactions, card issuance, onboarding, authentication, KYC, and profile management. Deliver SwiftUI and UIKit features end-to-end, including UI architecture, state handling, networking, error handling, testing, and release readiness. Develop reusable modules and shared UI patterns that improve consistency and reduce delivery time across multiple product areas. Collaborate with product, design, backend, QA, and compliance stakeholders to deliver reliable customer-facing mobile flows.

Senior iOS Developer at Clinic to Cloud

January 1, 2023 - May 1, 2024

Sole iOS developer for reports, push notifications, scheduling, and profile features in a healthcare SaaS platform. Built and maintained production mobile features independently while supporting QA, publishing, and ongoing product improvements under contract-style delivery. Implemented user-facing workflows with accessibility, localization readiness, reliability, and clear navigation for clinical users. Contributed to native Android delivery, including SSO implementation for the Zedmed medical app and releases for clinic-facing mobile products.

Senior iOS Developer at InsideTracker

December 1, 2022 - December 1, 2023

Owned core iOS module for food recognition, meal journaling, personalized reports, and recommendations in a consumer wellness product. Built user-facing SwiftUI flows and ML-assisted mobile features with strong attention to responsiveness, UI detail, and maintainability. Used AVFoundation and CoreML in camera-based workflows and partnered with product, design, and data teams to shape reliable mobile experiences. Tuned performance and stability through profiling, testing, and careful iteration after release.

Senior iOS Developer at Mass General Brigham

March 1, 2022 - December 1, 2022

Built an iPad telehealth application for secure patient-doctor consultations with scheduling and Zoom-based video and voice calls. Implemented stable patient and clinician workflows in a privacy-sensitive healthcare environment. Collaborated with product, QA, and hospital IT stakeholders to deliver reliable software under strict quality expectations.

Senior iOS Developer at Kadence

December 1, 2021 - March 1, 2022

Contributed to redesign and optimization of a B2B workplace management mobile experience with focus on usability and maintainable implementation. Used SwiftUI and reactive patterns to support polished mobile workflows, clear navigation, and iterative product improvements. Worked closely with product and design teams to improve enterprise-oriented user journeys.

Team Lead at First Line Software

March 1, 2019 - March 1, 2022

Led a 12-person mobile team delivering large-scale consumer and enterprise applications. Contributed to Android development in Kotlin and Java, including enterprise scanning tools, barcode-scanner workflows, and operational mobile tools. Shipped catalogue, cart, ordering, and content-driven features while improving authentication, networking, performance, and release reliability. Supported fast-moving release delivery with ownership of implementation, QA feedback, app-store readiness, documentation, and maintainable handoff. Introduced automated testing, code review standards, CI/CD practices, and release processes that improved maintainability and delivery confidence.