Roberto Seidenberg
Freelancer (iOS Developer) at Flag
Berlin Metropolitan Area Germany
Summary
👤
Senior🎓
Top SchoolRoberto Seidenberg is a Berlin-based iOS and macOS freelancer with 13 years of experience delivering production apps for clients across retail, advertising, and loyalty programs. Since 2009 he has operated independently, contributing to projects at companies like PAYBACK, Zalando, Trademob and APPSfactory, and has been working with Flag since 2016. He combines hands-on Swift/Objective-C implementation with practical product experience, frequently joining teams to ship user-facing features on short timelines. Roberto’s long freelance track record implies strong skills in integrating with diverse codebases and stakeholder workflows, and his public portfolio demonstrates a commitment to maintainable, client-focused delivery. With an engineering background from University of Applied Sciences Berlin, he blends formal training with real-world app development. Outside contract work he maintains an online project showcase, signaling ongoing experimentation and care for craft.
13 years of coding experience
4 years of employment as a software developer
Dipl.Ing., Dipl.Ing. at University of Applied Sciences Berlin
German, English
Github Skills (10)
proxy-server8
proxyman7
ios6
proxy6
macos5
swift5
uikit4
webserver4
http4
android4
Programming languages (1)
Github contributions (5)
robertoseidenberg/RCCPeakableImageView
Feb 2014 - Apr 2015
Contributions:14 commits, 2 pushes, 1 comment in 1 year 2 months
robertoseidenberg/busydays.github.io
Oct 2019 - Aug 2022
Contributions:42 pushes, 1 branch in 2 years 10 months
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