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Senior iOS developer with 12+ years of experience and 50+ consumer, fintech, sports, and wellness apps shipped across iOS and multiple platforms. I’ve led end-to-end development, performance monitoring, ad integrations, publishing workflows, and large-scale product delivery for millions of daily active users.…

Mateo Kozomara

App Developer, Programmer, Front-End Developer, +5

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Senior iOS developer with 12+ years of experience and 50+ consumer, fintech, sports, and wellness apps shipped across iOS and multiple platforms. I’ve led end-to-end development, performance monitoring, ad integrations, publishing workflows, and large-scale product delivery for millions of daily active users.…

Available to hire

Senior iOS developer with 12+ years of experience and 50+ consumer, fintech, sports, and wellness apps shipped across iOS and multiple platforms. I’ve led end-to-end development, performance monitoring, ad integrations, publishing workflows, and large-scale product delivery for millions of daily active users.

Skills

Experience Level

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

App iOS Engineer at Appicore, Slovakia

January 1, 2026 - Present

Building and maintaining native iOS apps for clients across fintech and sports. Key project includes Peňaženka (Prima Bank) and DEL Hockey (official app for Deutsche Eishockey Liga).

Senior iOS Engineer at Appcore

January 1, 2026 - Present

Continued development of native iOS projects in a remote CA-based team environment; contributed to multi-platform feature development and publishing processes.

Senior iOS Developer at Solvesall, Slovenia

January 1, 2024 - January 1, 2026

Contributed to building and maintaining native iOS applications for clients in fintech and sports, including Peňaženka for Prima Bank and DEL Hockey for Deutsche Eishockey Liga.

Senior iOS Engineer at Solvesall

January 1, 2024 - January 1, 2026

Built and maintained BLE-connected companion apps for hardware manufacturers, including Adria, Bockmann, Concorde, Caratec, Omnipemf and IVRA electronics. Core work focused on BLE communication, device pairing flows, real-time data sync between hardware and app, and control interfaces for motorhome and caravan systems.

Senior iOS Developer at Gamelo E Montreal, Canada

January 1, 2022 - January 1, 2024

Contributed to SongPop post-acquisition development at Gamelo. Maintained and scaled the app within Gamelo’s infrastructure, handling ongoing feature development, performance, and publishing across all platforms.

App iOS Engineer at FreshPlanet | The Sandbox

January 1, 2016 - January 1, 2022

Led frontend iOS development for SongPop and managed the complete development lifecycle. Responsible for performance monitoring, ad integration, and publishing to multiple platforms (iOS, Android, Amazon, Windows, macOS).

Senior Software Engineer at FreshPlanet

January 1, 2016 - January 1, 2022

Remote with US-based team. Lead frontend developer on SongPop—the world's most popular music trivia game—serving millions of daily active users. Responsible for the complete development cycle, maintenance, performance monitoring, ad integration, and publishing to iOS, Android, Amazon, Windows, and macOS.

Freelancer at Upwork

January 1, 2014 - January 1, 2016

Primarily focused on native iOS development using Swift and Objective-C. In this period I developed several apps, including Built4Tennis for Jez Green, Babymou and MyShamrock dating apps, and Joolz jewellery marketplace.