Freelance iOS & macOS developer
Get your iOS and Mac app built right.
Available now
Helping startups and teams turn iOS & Mac ideas into production-ready releases.
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Services
Hands-on Apple platform development plus strategic consulting to keep your team moving fast and shipping with confidence.
Development
iPhone & iPad apps
Native Swift and SwiftUI development for iPhone, iPad, and Apple Watch experiences.
Mac apps
Beautifully crafted Mac apps for a fully native platform experience.
Remote worldwide
Remote worldwide, with flexibility for short on-site assignments.
Consulting
Code & architecture reviews
Identify hidden bugs, technical debt, and opportunities to improve quality.
Team bootstrapping
Set up lean, efficient development teams with healthy engineering practices.
Process automation
Streamline build, release, and QA workflows so teams stay focused on shipping.
Coaching & mentoring
Upskill individuals and teams on Swift, architecture, testing, and best practices.
Monetization strategies
Navigate subscriptions, in-app purchases, and compliance with App Store rules.
Team augmentation
I can jump in to solve critical issues, unblock launches, and guide architectural decisions.
Nice to meet you, I'm Martin
A freelance engineer with a knack for great user experiences.
I have worked for many different organizations, from small startups to large industrial players. Projects include medical applications, e-commerce, mobile games, utility apps, and e-mobility.
Originally from Graz, Austria, I lived in Berlin for eight years and moved to Florence in 2022. I enjoy collaborating in teams but also have experience leading projects as a solo developer.
Besides working for my consulting clients, I also have my own apps on the App Store. Check out my whole app portfolio at bluebanana-software.com
Core skills
Additional skills
Alexander Kuhn
Director Engineering at Bosch eBike | Digital Business
"I had the honor that I was able to work with Martin on different projects in the last 4.5 years. Martin has an incredible positive impact on app development projects and the involved people. Without any doubts he has a great excellence in iOS development and is able to drive complex topics also in big-scale projects. Beside that, Martin is an excellent communicator and a good mediator / guide to do the right decisions. Martin has great confidence in dealing with tech people, UX people and business stakeholders. For example in a phase where had to work on multiple complex topics at the same time he was one of the key drivers to succeed by connecting dots and help to establish confidence. I was always able to rely on Martin's capabilities and can highly recommend him."
Ideation and development of native iOS and Mac products
I support you where you need momentum most: bringing new ideas to life or strengthening an existing team.
For Greenfield Projects
MVPs and prototypes
Have an idea for a native iOS or Mac product? I help you shape the scope, validate the core flow, and build a solid MVP ready for real users.
For Existing Teams
Strong team addition
Need senior Apple platform expertise inside your team? I join your workflow, ship production-ready features, and raise quality without slowing delivery.
How I work
Clear communication, focused execution, and dependable delivery at every stage.
Scope & strategy
Define goals, risks, and milestones so everyone stays aligned.
Build & iterate
Ship features in tight loops with quality, performance, and UX in mind.
Launch & support
Provide release guidance, monitoring, and ongoing improvements.
Ready to talk?
Whether you're validating a new idea or scaling an existing product, I help you ship native iOS and Mac features with clarity and confidence.
Book a free callSelected experience
A snapshot of recent collaborations across mobility, commerce, and productivity. Full career history available below.
Robert Bosch GmbH
Embedded in a cross-functional team I've worked on anti-theft and safety features of the Flow iOS app (for Bosch smart eBike systems), specifically electronic eBike lock, theft alert and theft tracking. I have also worked on the lower level bike communication layer (abstraction on top of BLE Bluetooth connections). My work touched many areas of the project, from low level data flow, to highly customized user interface components and feature flows. I was involved in the conception, architectural decisions and implementation of new product features and collaborated with stakeholders, designers and other developers.
OpenEmail
I built MVPs of the OpenEmail client apps for iOS and macOS.
Parfümerie Douglas GmbH
I have developed new key experiences for the Douglas shopping app.
Deutsche Bahn
I built an internal SDK prototype for interactive transit network maps.
Clue
As a senior developer and tech lead for the iOS team I was responsible for planning and implementing new features, improving the architecture, processes, and code quality. I've also acted as a mentor for junior team members.
Thalia Bücher GmbH
Senior iOS developer for the Thalia retail app.
FAQ
What kind of projects do you take on?
Greenfield iOS and Mac apps, MVPs, and product prototypes. I also join existing teams to ship features and guide architecture.
Can you build for iPad, Apple Watch, Apple TV, or Vision Pro?
Yes. I build native apps for iOS, iPadOS, macOS, watchOS, and tvOS, and can support visionOS depending on the project.
Are you using coding agents like Codex or Claude Code / Do you do agentic engineering?
Absolutely, if the client requests it. It can be a huge productivity boost. Even when I'm not manually typing code, there is still always the human element that has full control over the final outcome, architecture and user experience.
Can you build for Android too? Do you use cross-platform frameworks like Flutter or React Native?
No, I specialize in native Apple platform technology. If you need Android support, I can recommend trusted developers from my network.
What does a typical engagement look like?
We start with a short call to align on scope and goals, then agree on terms. Once the project kicks off, I work in focused iterations with a shared ticketing system.
How quickly can you start?
Availability depends on current workload. After a quick call, I can confirm timelines and the earliest start date.
Do you work with design teams or handle UX?
I collaborate with in-house designers or help refine UX and flows when needed, following platform best practices. If you need a dedicated UI/UX designer, I can recommend trusted people from my network.
Do you work with AI or coding agents like ChatGPT or Claude?
It depends on project goals and quality standards. I use coding agents to speed up repetitive tasks, but I stay hands-on and review all code.