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Rob Mulder - Freelance iOS Developer

Rob Mulder 

Freelance iOS Developer

With 10+ years of experience, I help organizations build native iOS apps that actually work. From concept to App Store, from MVP to enterprise scale.

Trusted by leading Dutch organizations including CoronaMelder (used by millions of Dutch citizens), NOS, Rabobank, the Dutch Parliament, the Ministry of Economic Affairs and Climate Policy, Radboudumc, national transport companies (HTM, RET, GVB, Connexxion), the Dutch Judiciary, SPAR University, Klippa, BONI, and WILDLANDS Adventure Zoo.

What I offer: An experienced developer who can work both independently and in teams, thinks along about the best solution, and builds apps with focus on both user experience and technical quality. Available immediately, flexible and reliable.

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What you get

A pragmatic approach where quality and deadlines go hand in hand. I build apps that are not only beautiful, but primarily work, scale, and remain maintainable.

  • Native iOS expertise: Swift, SwiftUI, UIKit, Combine – everything needed for modern iOS apps
  • Backend development: Python backends for complete app ecosystems (FastAPI, Django, Flask)
  • Full platform support: iOS, iPadOS, watchOS, tvOS, and CarPlay
  • Quality assured: Clean code, automated testing (unit, snapshot, UI), and accessibility from day one
  • Flexible deployment: Independently or in your team, on-site or remote, for short sprints or longer projects
  • Quick start: Experienced with various codebases and company cultures, productive quickly
  • Strategic thinking: Not just writing code, but also advising on architecture, UX, and technical decisions

Personal projects: changemonitor.io (website monitoring) and radiospotify.nl (Radio Spotify with playlists from popular Dutch radio stations) – from iOS app to Python backend.

Open source: Active contributions to various open source projects on GitHub, including bug fixes, feature additions, and documentation improvements in the iOS developer community.

Available immediately for new projects. Response within 24 hours.

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Personal

Based in Zwolle, Netherlands, working throughout the Netherlands (and remotely). Besides programming, I love challenges: I run Ultras, participate in Adventure Racing and Cross Triathlons, and enjoy hiking in the mountains.

This mindset carries over into my work: discipline, perseverance, and focus on the end goal. Reliable, proactive, and always available for my clients.