Claus Ruete, Full-Stack Developer Developer in Los Angeles, CA, United States
Claus Ruete

Full-Stack Developer Developer in Los Angeles, CA, United States

Member since November 9, 2016
Claus is a highly skilled and experienced software engineer who is mainly dedicated to writing clean code at every hierarchy layer. Claus prefers to use modern functional programming patterns in his projects, which focus on code reusability and maintainability.
Claus is now available for hire


  • Matco Enterprises
    Amazon Web Services (AWS), TypeScript, Node.js
  • Hapag-Lloyd
    Microservices, Full-Stack Developer, Redux, React, Node.js, TypeScript...
  • OkCupid
    In-app Purchases, iOS, Objective-C, Swift



Los Angeles, CA, United States



Preferred Environment

Git, Xcode, iOS, MacOS

The most amazing...

...time saver I've built is Panorama Screenshots – an app that quickly stitches multiple screenshots of scrolling content together into one very long screenshot.


  • Back-end Developer

    2020 - 2021
    Matco Enterprises
    • Developed a brand new application for large-scale data transfer in the medical field using Node.js and TypeScript.
    • Held responsibility for choosing tech stack, oversaw the whole development lifecycle from first lines of code to deployment to AWS.
    • Ensured safe and secure handling and transfer of patient data.
    Technologies: Amazon Web Services (AWS), TypeScript, Node.js
  • Back-end Developer

    2020 - 2020
    • Developed a Node.js back end for the organization of logistics in the field of international goods shipping.
    • Upgraded an existing JavaScript codebase to TypeScript.
    • Upgraded a Node.js back end from a single instance to auto-scaling with multiple instances.
    • Set up a new PostgreSQL database with indices, stored procedures, and partitioning.
    • Performed maintenance work on a cluster of microservices for goods fulfillment.
    Technologies: Microservices, Full-Stack Developer, Redux, React, Node.js, TypeScript, JavaScript
  • iOS Developer

    2019 - 2020
    • Collaborated with a team of developers to improve and built new features for a dating application.
    • Refreshed the user interface and marketing of in-app purchases.
    • Incorporated analytics and A/B testing to continuously improve the user experience.
    Technologies: In-app Purchases, iOS, Objective-C, Swift
  • iOS Developer

    2018 - 2020
    • Developed a brand-new iOS application for navigation of grocery delivery drivers.
    • Enabled the expansion of a diverse fleet of fully autonomous, partially autonomous, and manual vehicles.
    • Built features for tracking driver locations, notifications about assigned deliveries, routing, grocery pickup/dropoff, and more.
    Technologies: Push Notifications, Location Services, Google Maps SDK, iOS, Swift
  • Full-stack Developer

    2019 - 2019
    • Worked on an application allowing users to access local business offers and coupons.
    • Built B2B features for a business panel to access and analyze user data using a Node.js back end and Angular front end.
    • Implemented geofencing to track interactions between the end customers and local businesses.
    Technologies: APIs, Angular, Node.js, Location Services, JavaScript, iOS, Swift
  • iOS Developer

    2019 - 2019
    Graffunder Holdings LLC
    • Extended an iOS app used for in-flight navigation by pilots.
    • Built new UI features and refined the user interface.
    • Developed features to replay, upload, and download flight data.
    Technologies: PostGIS, Location Services, iOS, Swift
  • iOS Developer

    2017 - 2017
    • Translated Android framework functionality to iOS to enable cross-platform availability of advertising features.
    • Implemented access to advanced proprietary advertisement filling technology from the iOS platform.
    • Added high-performance caching to improve networking performance in geographic areas with lower-speed network access.
    Technologies: Advertising, iOS, Objective-C
  • iOS Developer

    2017 - 2017
    • Developed a brand new app for customer relations management.
    • Built custom charts, graphs and plots for user data.
    • Oversaw whole progress of app development from initial sketches to release-ready application.
    Technologies: Core Graphics, iOS, Swift
  • iOS Developer

    2017 - 2017
    Position Technologies, Inc.
    • Took over full responsibility for iOS app for data entry and B2B data management in the field of map data distribution for physical business locations.
    • Got the app ready for release and to be used by customers/business partners.
    • Enabled the extension of a successful business venture from only large B2B clients to also include small businesses.
    Technologies: UI Design, iOS, Objective-C, Swift
  • Researcher for Artificial Intelligence and Computer Vision

    2013 - 2016
    • Wrote algorithms for advanced image processing and feature detection.
    • Evaluated behavioral patterns and participated in risk analysis for self-driving cars.
    • Ran simulations to test various scenarios where software is used to control driver assistance systems or fully self-driving cars.
    Technologies: C++, C
  • iOS Developer

    2012 - 2016
    Freelance Work
    • Deployed applications to the App Store.
    • Supported users and evaluated feedback.
    • Updated and permanently improved apps over long periods of time.
    • Developed general-purpose and specific frameworks to share reusable components between apps.
    • Handled migration from Swift 1 to Swift 2 and from Swift 2 to Swift 3.
    Technologies: Objective-C, Swift, Xcode
  • iOS Developer

    2014 - 2015
    • Built the initial version of the iOS app from the ground up.
    • Incorporated the company's corporate design into the app.
    • Implemented simple user authorization while keeping all features usable by non-authorized users.
    • Coordinated communication between the retail, marketing, and software development teams.
    • Refactored the back end to enhance performance and improve security.
    Technologies: MongoDB, Node.js, Objective-C, Xcode


  • Languages

    TypeScript, Objective-C, Python, HTML, CSS, Swift, JavaScript
  • Libraries/APIs

    Node.js, React
  • Tools

  • Paradigms

    Functional Programming, Microservices
  • Platforms

    Amazon Web Services (AWS), iOS
  • Storage

    MySQL, PostgreSQL, MongoDB, PostGIS
  • Industry Expertise

    Web Development
  • Other

    AWS, Architecture, Leadership, Full-Stack Developer, APIs, Full-stack, Software Development
  • Frameworks



  • Bachelor of Science in Computer Science
    2013 - 2016
    Goethe-Universität - Frankfurt, Germany

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