Hi, nice to meet you!

Cristian Gutu

9+ years of experience on mobile

A self-taught, empathic, senior software engineer with over 9 years of commercial experience. Worked for fintech, e-learning, news, media and e-commerce companies across US, Europe and Asia. Possesses but not limited by competencies in React Native, React, JavaScript, TypeScript, GraphQL, Node.js, Objective-C, Swift, Java and Kotlin.

Shop Mobile Pro — Mobile Technical Lead, UI/UX Designer

June 2023 - January 2024
Contract - Shop Mobile Pro is a mobile store solution for Shopware stores.

Skills: iOS, Android, React Native, Figma, React.js, CI/CD, App Store Connect, Google Play

  • Developed a mobile shopping app for iOS and Android using React Native, TypeScript, Zustand, and other core libraries, seamlessly integrating with Shopware stores.
  • Ensured lightweight application by minimizing external library usage, resulting in 14.3 MB install size on iOS and 8.64 MB on Android; optimized performance for low-end devices like Samsung Galaxy A13.
  • Implemented CI/CD pipelines on CircleCI, leveraging Fastlane for iOS & Android to streamline deployment processes with parallel job execution strategies.
  • In addition to mobile development, I handled all the UI/UX work in Figma, built and released a landing page in React.js, and did some backend work for a custom email subscribe feature.
  • Established App Store & Google Play developer accounts, authored store listings, assets, and successfully launched both apps without issues on the first submission.
  • You can see the full list of features here and download the apps from here.

The Economist Group — Mobile engineer on iOS, Android and React Native

July 2022 - June 2023
Contract - The Economist is a well-known weekly publication covering global news, current affairs, business, finance, economics, science, technology, and culture.

Skills: iOS, Android, React Native, Swift, Kotlin, TypeScript, Jest, CircleCI

  • Built a background download feature, enabling offline access to weekly news editions in an audio format. Used native APIs from iOS and Android and exposed a simple interface to the React Native code base.
  • Created a React Native library for their consent management solution already present in their web app. Integrated the native libraries on iOS and Android and exposed them into React Native.
  • I resolved many native issues, addressed CI/CD challenges, enhanced build pipelines, orchestrated seamless migrations to newer versions of React Native, and resolved issues with Detox and Unit tests.
  • You can download The Economist app from here and the Espresso app from here.

DataCamp — React Native, Web, Node.js Developer

January 2022 - July 2022
Contract - DataCamp is an online learning platform that specializes in data science and analytics education.

Skills: React Native, TypeScript, Node.js, MongoDB, Express.js

  • Revamped and restructured key components of DataCamp’s iOS, Android, Web, and Backend applications.
  • Completed full migration of codebase from JavaScript to TypeScript within a tight 2-week timeframe.
  • Enhanced functionality by integrating new features into an established GraphQL API developed in Node.js using Express.js.
  • You can download the app from here.

AilyLabs — Mobile Squad Lead, React Native Developer, WatchOS Developer

February 2021 - January 2022
Contract - Aily Labs is a Munich-based startup aiming to provide AI-enterprise solutions to maximize productivity and efficiency.

Skills: Project Management, Technical Leadership, WatchOS, SwiftUI, React Native, TypeScript, SaaS

  • Built a next-gen, fully AI-powered solution to help big businesses understand & wisely use their data.
  • The end-client was Sanofi, one of the biggest pharmaceutical companies in the world, and we’re helping them to forecast and have the best possible business outcomes.
  • Led 2 mobile teams in the process of developing the mobile apps on iOS and Android using React Native.
  • Developed a standalone WatchOS app using SwiftUI with WatchKit and integrated it with the React Native iOS app.

IBM iX — React Native Developer, App Store & Google Play Manager

August 2020 - January 2021
Permanent - IBM iX, short for IBM Interactive Experience, is the digital agency and design consultancy arm of IBM.

Skills: React Native, iOS, Android, TypeScript, Jest, react-native-testing, App Store Connect, Google Play

  • Developed a car-companion app for a major Asian automotive company.
  • Orchestrated CI/CD pipelines, prepared store listings for App Store and Google Play.
  • Led the successful launch of iOS and Android apps in Italy.
  • Ensured high code quality by extensively unit testing business-logic code, achieving 90% code coverage.
  • You can download the apps for iOS from here and for Android here.

Cobalt Sign — Junior, Mid, Senior, Lead Mobile Developer

June 2014 - August 2020
Permanent - Cobalt Sign is a software development agency specialized on iOS and Android apps.

Skills: iOS, Android, React Native, JavaScript, TypeScript, Objective-C, Swift, Java, Kotlin, C#, Windows Phone, Technical Leadership, Project Management, Scrum Master, Delivery Manager, App Store Connect, Google Play, TizenOS

  • Developed Windows Phone apps in C# with .NET tools.
  • Utilized Objective-C, Java, Kotlin, Swift, and JavaScript/TypeScript for iOS, Android, React Native platforms showcasing adaptability across diverse mobile frameworks.
  • Managed end-to-end app projects for fintech and medical clients, involving requirement analysis, client engagement, CI/CD integrations, and Agile practices adherence.
  • Led the creation and evolution of ReadySetHoliday!, an internally developed product with 2 million+ downloads.
  • Did a lot of in-house technical talks about Java, Swift, Kotlin, JavaScript, React Native, Redux, and general iOS Android development tips.
  • Developed an analytics app for a prestigious hospital in Zürich using React Native.
  • Developed an investment and mobile banking app for a Zurich-based bank with advanced trading features tailored for different regions.

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