iOS Developer with 11+ years building native applications — spanning fintech, banking, security and consumer products.
Practical experience with Swift, UIKit, SwiftUI, Core Data and Swift Concurrency, with a track record on high-stakes, regulated applications — contactless payment systems, mobile banking platforms and secure credential management tools. Comfortable in cross-functional, distributed teams and outsourced, client-facing setups across Germany, the Netherlands and the UK.
Mobile Application Developer
Devtech · outsourced, client: Pango · Novi Sad
Part of the iOS team working across a VPN SDK, VPN client apps, and a password manager product. Maintained C++ SDK compatibility with recent Xcode versions and developed AutoFill extensions for secure credential input.
Career break & relocation
USA → Gothenburg, Sweden
Planned break following a client team restructuring, then relocated from Serbia to Sweden. Now settled and available to start immediately.
Mobile Application Developer
Telego · freelance · Belgrade
Built and maintained a music streaming app for a well-known Serbian record label, and a white-label iOS application for fitness coaches. Maintained several published apps, including AntenaM and Novi Magazin, with in-app purchases and custom UI animations.
Mobile Application Developer
Quantox (formerly Crowded Room Studio) · Novi Sad
Contributed to a consent management framework for LiveRamp (Netherlands) with an over-the-air configurable UI. Delivered a long-term engagement for Berens Mosiek Siemes (Germany): a contactless payment app and an iPad banking-workspace app. Wrote unit and UI tests, and took part in code reviews.
Mobile Application Developer
Vega IT · Novi Sad
Part of the iOS team for a UK-based health service application. Set up and maintained CI/CD pipelines (Bitrise) for multiple white-label variants, and maintained a portfolio of mobile banking apps built on the iBanking platform.
Mobile Application Developer
Execom · Novi Sad
Developed a white-label iOS app for car wash payment services, integrating third-party payment APIs including Stripe and AllSecure.
iOS Developer (Junior)
NS Web Development · Novi Sad
Developed native iOS applications using Swift and Objective-C. Built a Core Data-backed local storage layer for medical device data (ECG, blood pressure) with server-side sync, and contributed to a BLE SDK connecting to health monitors.
Let's talk.
marko.stajic@gmail.com