About Me


Image of Sebastian

Freelancing Software Developer (mainly iOS) with 10+ years experience in mobile iOS development and 20+ years experience in server-site software development, operations, systems architect and technical project management.

Profound knowledge in development, conception, architecture and going-live with mobile iOS App.

I have known information technology project business for many years as an IT consultant, system analyst, mobile app creator and Java expert. I have been responsibly involved in the development of innovative IT solutions of well-known companies. My experience ranges from conception and implementation as far as support and tuning of intensively visited internet applications. Besides software development, my main focuses are communication and coordination among customers, development team, hosting companies and other technical associates. Due to my work experience I had an excellent knowledge of CoreMedia's Content Management System (until 2015). Since 2009 I mainly develop iOS Apps, but I am always looking left and right.

I have worked for startups as well as for corporations. I have experienced agile transitions in companies multiple times. Since 2013 most of my projects follow the Scrum project management method (some followed Kanban).

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Selection of own Apps


Some Stats


42

Participation in App Development

17

Own Published Apps

Years of iOS Experience

24

Years of Experience

Experience


  • Jan 2024
    -
    today

    Finance

    Operations

    Operation of Java based Finance Plattform

  • Feb 2023
    -
    Dec 2023

    Fintech

    iOS Developer

    New App: Swift, UIKit, SwiftUI, KMP

  • Oct 2022
    -
    Jan 2023

    Media

    iOS Developer

    Enhancements of Audio Player for three Radio Apps

  • Nov 2021
    -
    Sep 2022

    Fintech

    iOS Developer

    New App: Swift, KMP

  • Oct 2020
    -
    Oct 2021

    Finance

    Operations

    Operation of Java based Finance Plattform

  •  
    Jan 2021

    Children Sleep Trainer

    Release of App

    App for younger children without an understanding of time. See App Store for more information.

  • Jan 2020
    -
    Oct 2020

    STARTUP: RIDE POOLING

    Backend Developer

    Ongoing Java Backend Development and new Micro Services: Spring

  • Sep 2019
    -
    Dec 2019

    STARTUP: RIDE POOLING

    iOS Developer

    Enhancements of Ride Pooling App (initially written by me end of 2014): Swift

  • May 2019
    -
    AUG 2019

    Media

    Server-side Swift (Vapor)

    New server: Usage of some AWS services

  •  
    ...

    Further Projects

    On Request

    Visit the Apple App Store for a full list of my own published apps.

  •  
    Feb 2009

    Das CoreMedia CMS (book)

    Author

  •  
    2005

     

    Start of Self Employment

Education


  • 1994
    -
    1997

    Berufsakademie Berlin

    Diplom-Ingenieur
    für technische Informatik (BA)

    Graduated Engineer
    for technical Computer Engineering
    University: dual study with Alcatel SEL AG

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