Freelancer profile translated to English.

Description

I help companies develop high-quality native iOS apps, modernize existing apps, and quickly solve technical problems.

Senior iOS Engineer with over 10 years of experience in Swift, SwiftUI, and UIKit – for large-scale consumer apps as well as enterprise projects. Worked for IBM, eBay Kleinanzeigen, Siemens, and EDEKA, among others.

What sets me apart: I deliver maintainable, well-structured code, quickly get up to speed with existing codebases, and take responsibility from architecture to release.

Typical projects I undertake:

Development of new iOS apps (Swift, SwiftUI)
Modernization & refactoring of existing apps, UIKit→SwiftUI migration
App architecture & technical conception (MVVM, modular, Clean Architecture)
Auth & security flows in sensitive environments (e.g., ePA/Healthcare)
CI/CD setup with Fastlane, performance & code audits

Furthermore, I am developing my own full-stack product with NestJS, Next.js/React, and AI pipelines – relevant for projects that combine mobile with backend and AI integration.

Industry field of expertise

Languages

German
Native or bilingual
English
Fluent
Russian
Native or bilingual

Workplace preferences

Remote only

Primarily works remotely

IBM Deutschland GmbH
Senior iOS Developer
HEALTH AND WELLNESS
October 2023 - Today (2 years and 10 months)
Nürnberg, Germany
Electronic Patient Record (ePA)

Development of security-critical authentication components for the electronic patient record – one of Germany's central digital health infrastructures with the highest demands on data protection and security (BSI, gematik).

Implementation of the integration of sectoral identity providers (sek-IDP)
Implementation of security-relevant authentication and session flows
Stabilization of complex login and reauthentication processes that were previously error-prone
Development of modern UI components with SwiftUI
Integration of Kotlin Multiplatform modules (KMP) for cross-platform logic
Development within a scalable enterprise architecture in a large, regulated project environment
SwiftUI Swift MVVM KMP iOS
Kleinanzeigen GmbH
Senior iOS Developer
E-COMMERCE
April 2022 - July 2023 (1 year and 4 months)
Berlin, Germany
Classifieds App (formerly eBay Kleinanzeigen)

Further development and UI modernization of one of Germany's largest consumer apps with millions of users – in the context of rebranding after the spin-off from eBay.

Introduction and integration of a scalable design system across the app
Gradual migration and modernization of existing UI components
Development of new features in a large-scale, high-traffic platform
Improvement of maintainability and consistency of the UI architecture
Collaboration with product, design, and engineering teams in an agile environment
Design System SwiftUI iOS Development App Development MVVM
LiveEO GmbH
Senior iOS Developer
TECH
January 2022 - September 2022 (8 months)
Berlin, Germany
Geospatial Data Management Platform

Conception and independent development of an iOS MVP application for visualizing satellite-based geodata – from idea to deployable app for infrastructure and industrial customers.

Development of a mobile platform for displaying geospatial data from satellite analyses
Integration of Mapbox with custom tiling and zoom-dependent data visualization
Optimization of map performance for large geodata sets
Implementation of offline storage and selective data download for field use
Building a high-performance, scalable MVP architecture
iOS Development SwiftUI Mapbox Geographic Information Systems (GIS) MVP