Open to opportunities

Cristian Petra

@cristianpetra

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Senior mobile developer specializing in iOS and cross-platform apps with strong architecture focus.

Germany

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What I'm looking for

I seek roles leading mobile development or teams, focusing on clean architecture, performance optimization, CI/CD, and delivering user-centered apps in collaborative Agile environments.

I am a Senior Mobile Developer with extensive experience designing, developing, and delivering high-quality iOS and cross-platform applications using Swift, SwiftUI, React Native, and Objective-C.

I have led teams, architected scalable solutions, and improved app performance through code optimization and modular design while applying patterns like MVVM, Clean Architecture, and MVVM-C.

My background includes end-to-end product work and freelance engagements where I implemented features, refactored large codebases, and ensured quality via unit and snapshot testing, CI/CD, and app distribution tooling.

I am collaborative, quality-driven, and continuously integrate modern mobile trends and DevOps practices to deliver reliable, user-focused apps with measurable client satisfaction.

Experience

Work history, roles, and key accomplishments

Senior Mobile Developer

Qlaunch GmbH

Jan 2024 - Oct 2025 (1 year 9 months)

Contributed to architecture and delivered scalable iOS solutions, improved app performance through optimizations, and led an iOS team to complete projects on schedule while ensuring client satisfaction.

Swift SwiftUI Objective C MVVM React Native CI CD Fastlane GitHub Actions

Freelance Mobile Developer

Pabau Ltd

Jan 2023 - Jan 2024 (1 year)

Collaborated with the in-house team to enhance and maintain Pabau’s iOS app, implementing features and UI improvements in Objective-C and performing performance optimizations and refactors.

Objective C Swift Refactoring Performance Optimization Unit Testing App Store Connect TestFlight Git

iOS Team Leader

Herewith GmbH

Sep 2021 - Jan 2023 (1 year 4 months)

Led and managed a remote iOS team, designed scalable secure architectures, enforced coding standards through code reviews, and drove continuous improvement in development practices.

IOS Architectures Swift MVVM Code Review Team Leadership Unit Testing Continuous Improvement Agile

Senior iOS Developer

Myosotis GmbH

Sep 2018 - Apr 2020 (1 year 7 months)

Implemented features using MVVM-C to ensure modularity and testability, built reusable Swift components, and delivered maintainable code aligned with modern iOS standards.

Swift MVVM SwiftUI Unit Testing XCTest CI CD App Store Connect

Freelance Senior iOS Developer

Popmetrics LLC

Jul 2017 - Aug 2018 (1 year 1 month)

Contributed to development of a robust iOS app using Swift, creating modular components to improve reusability and delivering clean, maintainable code.

Swift XCode Unit Testing Git

Mobile Developer

iRonin

Jul 2014 - Aug 2017 (3 years 1 month)

Developed cross-platform mobile apps, provided accurate estimates, participated in daily Scrum, and delivered regular progress updates across multiple projects.